Share Class

AVERAGE ANNUAL TOTAL RETURNS

YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
A Shares (TIBAX)
Without sales charge11.06%14.77%4.30%7.19%4.34%9.62%
With sales charge6.06%9.58%2.70%6.20%3.87%9.28%
Benchmark
Blended Index14.29%16.95%6.79%9.21%4.39%7.75%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
C Shares (TIBCX)
Without sales charge10.47%13.98%3.57%6.43%3.64%8.95%
With sales charge9.47%12.98%3.57%6.43%3.64%8.95%
Benchmark
Blended Index14.29%16.95%6.79%9.21%4.39%7.75%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
I Shares (TIBIX)11.40%15.16%4.64%7.54%4.69%10.02%
Benchmark
Blended Index14.29%16.95%6.79%9.21%4.39%7.75%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
R3 Shares (TIBRX)10.84%14.49%3.99%6.86%4.07%9.37%
Benchmark
Blended Index14.29%16.95%6.79%9.21%4.39%7.75%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
R4 Shares (TIBGX)10.91%14.51%4.07%6.98%4.17%9.51%
Benchmark
Blended Index14.29%16.95%6.79%9.21%4.39%7.75%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
R5 Shares (TIBMX)11.24%14.97%4.49%7.39%4.58%9.95%
Benchmark
Blended Index14.29%16.95%6.79%9.21%4.39%7.75%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
R6 Shares (TIBOX)11.17%14.92%4.57%7.50%4.66%10.00%
Benchmark
Blended Index14.29%16.95%6.79%9.21%4.39%7.75%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
A Shares (TIBAX)
Without sales charge11.07%13.01%4.34%7.28%4.80%9.68%
With sales charge6.07%7.94%2.75%6.29%4.32%9.34%
Benchmark
Blended Index12.68%13.40%6.54%8.80%4.50%7.69%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
C Shares (TIBCX)
Without sales charge10.50%12.19%3.60%6.52%4.08%9.01%
With sales charge9.50%11.19%3.60%6.52%4.08%9.01%
Benchmark
Blended Index12.68%13.40%6.54%8.80%4.50%7.69%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
I Shares (TIBIX)11.33%13.30%4.67%7.63%5.14%10.08%
Benchmark
Blended Index12.68%13.40%6.54%8.80%4.50%7.69%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
R3 Shares (TIBRX)10.83%12.63%4.02%6.95%4.51%9.42%
Benchmark
Blended Index12.68%13.40%6.54%8.80%4.50%7.69%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
R4 Shares (TIBGX)10.89%12.72%4.10%7.06%4.62%9.57%
Benchmark
Blended Index12.68%13.40%6.54%8.80%4.50%7.69%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
R5 Shares (TIBMX)11.23%13.22%4.54%7.50%5.03%10.01%
Benchmark
Blended Index12.68%13.40%6.54%8.80%4.50%7.69%
YTD 1-YR 3-YR 5-YR 10-YR INCEPTION*
R6 Shares (TIBOX)11.14%13.15%4.61%7.60%5.11%10.05%
Benchmark
Blended Index12.68%13.40%6.54%8.80%4.50%7.69%

Returns for less than one year are not annualized.
*Inception date for Class A Shares 12/24/2002.

Returns for less than one year are not annualized.
*Inception date for Class C Shares 12/24/2002.

Returns for less than one year are not annualized.
*Since 12/24/2002. Prior to inception of class I (11/3/2003), the performance includes actual returns of class A shares adjusted for class I expenses.

Returns for less than one year are not annualized.
*Since 12/24/2002. Prior to inception of class R3 (2/1/2005), the performance includes actual returns of class A shares adjusted for class R3 expenses.

Returns for less than one year are not annualized.
*Since 12/24/2002. Prior to inception of class R4 (2/1/2008), the performance includes actual returns of class A shares adjusted for class R4 expenses.

Returns for less than one year are not annualized.
*Since 12/24/2002. Prior to inception of class R5 (2/1/2007), the performance includes actual returns of class A shares adjusted for class R5 expenses.

Returns for less than one year are not annualized.
*Since 12/24/2002. Prior to inception of class R6 (4/10/2017), the performance includes actual returns of class A shares adjusted for class R6 expenses.

Performance data shown represents past performance and is no guarantee of future results. Investment return and principal value will fluctuate so shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than quoted.

The maximum sales charge for the Fund’s A shares is 4.50%.

C shares include a 1% contingent deferred sales charge (CDSC) for the first year only.

There is no up-front sales charge for class I shares.

There is no up-front sales charge for class R shares.

FUND OPERATING EXPENSES — Class A Shares

Gross Annual Operating Expenses (as reported in the most recent Prospectus)1.39%
Actual Annual Operating Expenses (fiscal year to date, as of 9/30/2017)1.19%

Expense Ratios – Expressed as a percentage of total fund assets and include management fees and operating costs. Expense ratios fluctuate over time and the expense ratio in the prospectus may differ from the actual expense ratio. The fund's total return includes the deduction of expenses.

For more detailed information on fund expenses, please see the fund's prospectus.

FUND OPERATING EXPENSES — Class C Shares

Gross Annual Operating Expenses (as reported in the most recent Prospectus)2.14%
Net Annual Operating Expenses (as reported in the most recent Prospectus)2.11%
Actual Annual Operating Expenses (fiscal year to date, as of 9/30/2017)1.90%

Thornburg Investment Management and/or Thornburg Securities Corporation have contractually agreed to waive fees and reimburse expenses incurred by the Fund through at least April 10, 2018, so that actual Class C expenses do not exceed 1.90%, not including the effects of Acquired Fund Fees and Expenses.

The "Actual Annualized Operating Expenses" for each class of shares of the Fund represents the operating expenses of each such class as of the date shown above, including the effect of any fee waivers and expense reimbursements which are applicable to that class, but not including the effects of Acquired Fund Fees and Expenses. For a discussion of Acquired Fund Fees and Expense, see the Fund's current prospectus.

Expense Ratios – Expressed as a percentage of total fund assets and include management fees and operating costs. Expense ratios fluctuate over time and the expense ratio in the prospectus may differ from the actual expense ratio. The fund's total return includes the deduction of expenses.

For more detailed information on fund expenses, please see the fund's prospectus.

FUND OPERATING EXPENSES — Class I Shares

Gross Annual Operating Expenses (as reported in the most recent Prospectus)1.07%
Actual Annual Operating Expenses (fiscal year to date, as of 9/30/2017)0.86%

Expense Ratios – Expressed as a percentage of total fund assets and include management fees and operating costs. Expense ratios fluctuate over time and the expense ratio in the prospectus may differ from the actual expense ratio. The fund's total return includes the deduction of expenses.

For more detailed information on fund expenses, please see the fund's prospectus.

FUND OPERATING EXPENSES — Class R3 Shares

Gross Annual Operating Expenses (as reported in the most recent Prospectus)1.80%
Net Annual Operating Expenses (as reported in the most recent Prospectus)1.71%
Actual Annual Operating Expenses (fiscal year to date, as of 9/30/2017)1.47%

Thornburg Investment Management and/or Thornburg Securities Corporation have contractually agreed to waive fees and reimburse expenses incurred by the Fund through at least April 10, 2018, so that actual Class R3 expenses do not exceed 1.50%, not including the effects of Acquired Fund Fees and Expenses.

The "Actual Annualized Operating Expenses" for each class of shares of the Fund represents the operating expenses of each such class as of the date shown above, including the effect of any fee waivers and expense reimbursements which are applicable to that class, but not including the effects of Acquired Fund Fees and Expenses. For a discussion of Acquired Fund Fees and Expense, see the Fund's current prospectus.

Expense Ratios – Expressed as a percentage of total fund assets and include management fees and operating costs. Expense ratios fluctuate over time and the expense ratio in the prospectus may differ from the actual expense ratio. The fund's total return includes the deduction of expenses.

For more detailed information on fund expenses, please see the fund's prospectus.

FUND OPERATING EXPENSES — Class R4 Shares

Gross Annual Operating Expenses (as reported in the most recent Prospectus)1.69%
Net Annual Operating Expenses (as reported in the most recent Prospectus)1.61%
Actual Annual Operating Expenses (fiscal year to date, as of 9/30/2017)1.40%

Thornburg Investment Management and/or Thornburg Securities Corporation have contractually agreed to waive fees and reimburse expenses incurred by the Fund through at least April 10, 2018, so that actual Class R4 expenses do not exceed 1.40%, not including the effects of Acquired Fund Fees and Expenses.

The "Actual Annualized Operating Expenses" for each class of shares of the Fund represents the operating expenses of each such class as of the date shown above, including the effect of any fee waivers and expense reimbursements which are applicable to that class, but not including the effects of Acquired Fund Fees and Expenses. For a discussion of Acquired Fund Fees and Expense, see the Fund's current prospectus.

Expense Ratios – Expressed as a percentage of total fund assets and include management fees and operating costs. Expense ratios fluctuate over time and the expense ratio in the prospectus may differ from the actual expense ratio. The fund's total return includes the deduction of expenses.

For more detailed information on fund expenses, please see the fund's prospectus.

FUND OPERATING EXPENSES — Class R5 Shares

Gross Annual Operating Expenses (as reported in the most recent Prospectus)1.28%
Net Annual Operating Expenses (as reported in the most recent Prospectus)1.20%
Actual Annual Operating Expenses (fiscal year to date, as of 9/30/2017)0.99%

Thornburg Investment Management and/or Thornburg Securities Corporation have contractually agreed to waive fees and reimburse expenses incurred by the Fund through at least April 10, 2018, so that actual Class R5 expenses do not exceed 0.99%, not including the effects of Acquired Fund Fees and Expenses.

The "Actual Annualized Operating Expenses" for each class of shares of the Fund represents the operating expenses of each such class as of the date shown above, including the effect of any fee waivers and expense reimbursements which are applicable to that class, but not including the effects of Acquired Fund Fees and Expenses. For a discussion of Acquired Fund Fees and Expense, see the Fund's current prospectus.

Expense Ratios – Expressed as a percentage of total fund assets and include management fees and operating costs. Expense ratios fluctuate over time and the expense ratio in the prospectus may differ from the actual expense ratio. The fund's total return includes the deduction of expenses.

For more detailed information on fund expenses, please see the fund's prospectus.

FUND OPERATING EXPENSES — Class R6 Shares

Gross Annual Operating Expenses (as reported in the most recent Prospectus)1.06%
Net Annual Operating Expenses (as reported in the most recent Prospectus)1.01%
Actual Annual Operating Expenses (fiscal year to date, as of 9/30/2017)0.80%

Thornburg Investment Management and/or Thornburg Securities Corporation have contractually agreed to waive fees and reimburse expenses incurred by the Fund through at least April 10, 2018, so that actual Class R6 expenses do not exceed 0.80%, not including the effects of Acquired Fund Fees and Expenses.

The "Actual Annualized Operating Expenses" for each class of shares of the Fund represents the operating expenses of each such class as of the date shown above, including the effect of any fee waivers and expense reimbursements which are applicable to that class, but not including the effects of Acquired Fund Fees and Expenses. For a discussion of Acquired Fund Fees and Expense, see the Fund's current prospectus.

Expense Ratios – Expressed as a percentage of total fund assets and include management fees and operating costs. Expense ratios fluctuate over time and the expense ratio in the prospectus may differ from the actual expense ratio. The fund's total return includes the deduction of expenses.

For more detailed information on fund expenses, please see the fund's prospectus.

MORNINGSTAR RATING

Overall Morningstar Rating among 393 World Allocation funds, based on risk-adjusted returns for class A shares, using a weighted average of the fund's three-, five- and ten-year ratings: respectively, 3 stars, 3 stars and 3 stars among 393, 337 and 164 funds, as of 10/31/2017.

Additional Rating and Ranking Information

To determine a fund's Morningstar Rating™, funds and other managed products with at least a three-year history are ranked in their categories by their Morningstar Risk-Adjusted Return scores. The top 10% receive 5 stars; the next 22.5%, 4 stars; the middle 35%, 3 stars; the next 22.5%, 2 stars; and the bottom 10% receive 1 star. The Risk-Adjusted Return accounts for variation in a managed product's monthly excess performance (excluding sales charges), placing more emphasis on downward variations and rewarding consistent performance. Other share classes may have different performance characteristics. © 2017 Morningstar, Inc. All Rights Reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. Past performance is no guarantee of future results.

MORNINGSTAR RATING

Overall Morningstar Rating among 393 World Allocation funds, based on risk-adjusted returns for class C shares, using a weighted average of the fund's three-, five- and ten-year ratings: respectively, 2 stars, 3 stars and 3 stars among 393, 337 and 164 funds, as of 10/31/2017.

Additional Rating and Ranking Information

To determine a fund's Morningstar Rating™, funds and other managed products with at least a three-year history are ranked in their categories by their Morningstar Risk-Adjusted Return scores. The top 10% receive 5 stars; the next 22.5%, 4 stars; the middle 35%, 3 stars; the next 22.5%, 2 stars; and the bottom 10% receive 1 star. The Risk-Adjusted Return accounts for variation in a managed product's monthly excess performance (excluding sales charges), placing more emphasis on downward variations and rewarding consistent performance. Other share classes may have different performance characteristics. © 2017 Morningstar, Inc. All Rights Reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. Past performance is no guarantee of future results.

MORNINGSTAR RATING

Overall Morningstar Rating among 393 World Allocation funds, based on risk-adjusted returns for class I shares, using a weighted average of the fund's three-, five- and ten-year ratings: respectively, 3 stars, 4 stars and 3 stars among 393, 337 and 164 funds, as of 10/31/2017.

Additional Rating and Ranking Information

To determine a fund's Morningstar Rating™, funds and other managed products with at least a three-year history are ranked in their categories by their Morningstar Risk-Adjusted Return scores. The top 10% receive 5 stars; the next 22.5%, 4 stars; the middle 35%, 3 stars; the next 22.5%, 2 stars; and the bottom 10% receive 1 star. The Risk-Adjusted Return accounts for variation in a managed product's monthly excess performance (excluding sales charges), placing more emphasis on downward variations and rewarding consistent performance. Other share classes may have different performance characteristics. © 2017 Morningstar, Inc. All Rights Reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. Past performance is no guarantee of future results.

MORNINGSTAR RATING

Overall Morningstar Rating among 393 World Allocation funds, based on risk-adjusted returns for class R3 shares, using a weighted average of the fund's three-, five- and ten-year ratings: respectively, 3 stars, 3 stars and 3 stars among 393, 337 and 164 funds, as of 10/31/2017.

Additional Rating and Ranking Information

To determine a fund's Morningstar Rating™, funds and other managed products with at least a three-year history are ranked in their categories by their Morningstar Risk-Adjusted Return scores. The top 10% receive 5 stars; the next 22.5%, 4 stars; the middle 35%, 3 stars; the next 22.5%, 2 stars; and the bottom 10% receive 1 star. The Risk-Adjusted Return accounts for variation in a managed product's monthly excess performance (excluding sales charges), placing more emphasis on downward variations and rewarding consistent performance. Other share classes may have different performance characteristics. © 2017 Morningstar, Inc. All Rights Reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. Past performance is no guarantee of future results.

MORNINGSTAR RATING

Overall Morningstar Rating among 393 World Allocation funds, based on risk-adjusted returns for class R4 shares, using a weighted average of the fund's three-, five- and ten-year ratings: respectively, 3 stars, 3 stars and 3 stars among 393, 337 and 164 funds, as of 10/31/2017.

Additional Rating and Ranking Information

To determine a fund's Morningstar Rating™, funds and other managed products with at least a three-year history are ranked in their categories by their Morningstar Risk-Adjusted Return scores. The top 10% receive 5 stars; the next 22.5%, 4 stars; the middle 35%, 3 stars; the next 22.5%, 2 stars; and the bottom 10% receive 1 star. The Risk-Adjusted Return accounts for variation in a managed product's monthly excess performance (excluding sales charges), placing more emphasis on downward variations and rewarding consistent performance. Other share classes may have different performance characteristics. © 2017 Morningstar, Inc. All Rights Reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. Past performance is no guarantee of future results.

MORNINGSTAR RATING

Overall Morningstar Rating among 393 World Allocation funds, based on risk-adjusted returns for class R5 shares, using a weighted average of the fund's three-, five- and ten-year ratings: respectively, 3 stars, 4 stars and 3 stars among 393, 337 and 164 funds, as of 10/31/2017.

Additional Rating and Ranking Information

To determine a fund's Morningstar Rating™, funds and other managed products with at least a three-year history are ranked in their categories by their Morningstar Risk-Adjusted Return scores. The top 10% receive 5 stars; the next 22.5%, 4 stars; the middle 35%, 3 stars; the next 22.5%, 2 stars; and the bottom 10% receive 1 star. The Risk-Adjusted Return accounts for variation in a managed product's monthly excess performance (excluding sales charges), placing more emphasis on downward variations and rewarding consistent performance. Other share classes may have different performance characteristics. © 2017 Morningstar, Inc. All Rights Reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. Past performance is no guarantee of future results.

MORNINGSTAR RATING

Overall Morningstar Rating among 393 World Allocation funds, based on risk-adjusted returns for class R6 shares, using a weighted average of the fund's three-, five- and ten-year ratings: respectively, 3 stars, 3 stars and 3 stars among 393, 337 and 164 funds, as of 10/31/2017.

Additional Rating and Ranking Information

To determine a fund's Morningstar Rating™, funds and other managed products with at least a three-year history are ranked in their categories by their Morningstar Risk-Adjusted Return scores. The top 10% receive 5 stars; the next 22.5%, 4 stars; the middle 35%, 3 stars; the next 22.5%, 2 stars; and the bottom 10% receive 1 star. The Risk-Adjusted Return accounts for variation in a managed product's monthly excess performance (excluding sales charges), placing more emphasis on downward variations and rewarding consistent performance. Other share classes may have different performance characteristics. © 2017 Morningstar, Inc. All Rights Reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. Past performance is no guarantee of future results.

30-day Yields With Sales Charge as of 9/30/2017 — Class A Shares

SEC Yield2.84%

30-day Yields With Sales Charge as of 9/30/2017 — Class C Shares

SEC Yield2.28%
Without the fee waivers and expense reimbursements described above the SEC yield would have been 2.26%.

30-day Yields With Sales Charge as of 9/30/2017 — Class I Shares

SEC Yield3.30%

30-day Yields With Sales Charge as of 9/30/2017 — Class R3 Shares

SEC Yield3.07%
Without the fee waivers and expense reimbursements described above the SEC yield would have been 2.93%.

30-day Yields With Sales Charge as of 9/30/2017 — Class R4 Shares

SEC Yield2.78%
Without the fee waivers and expense reimbursements described above the SEC yield would have been 2.59%.

30-day Yields With Sales Charge as of 9/30/2017 — Class R5 Shares

SEC Yield3.18%
Without the fee waivers and expense reimbursements described above the SEC yield would have been 3.00%.

30-day Yields With Sales Charge as of 9/30/2017 — Class R6 Shares

SEC Yield3.37%
Without the fee waivers and expense reimbursements described above the SEC yield would have been 2.85%.

Dividends and Capital Gains — Class A Shares

Dividend (paid Sep 22, 2017)$0.26000
Capital Gains (2017)None Paid

Dividends and Capital Gains — Class C Shares

Dividend (paid Sep 22, 2017)$0.22225
Capital Gains (2017)None Paid

Dividends and Capital Gains — Class I Shares

Dividend (paid Sep 22, 2017)$0.27894
Capital Gains (2017)None Paid

Dividends and Capital Gains — Class R3 Shares

Dividend (paid Sep 22, 2017)$0.24341
Capital Gains (2017)None Paid

Dividends and Capital Gains — Class R4 Shares

Dividend (paid Sep 22, 2017)$0.24924
Capital Gains (2017)None Paid

Dividends and Capital Gains — Class R5 Shares

Dividend (paid Sep 22, 2017)$0.27209
Capital Gains (2017)None Paid

Dividends and Capital Gains — Class R6 Shares

Dividend (paid Sep 22, 2017)$0.29198
Capital Gains (2017)None Paid

Dividend History  — class A shares

Q1Q2Q3Q4ANNUAL
TOTAL
2017
(payable date)
$0.17000
(3/24/2017)
$0.20000
(6/23/2017)
$0.26000
(9/22/2017)
$0.63000
 
2016
(payable date)
$0.17000
(3/24/2016)
$0.18500
(6/24/2016)
$0.19500
(9/26/2016)
$0.21500
(12/23/2016)
$0.76500
 
2015
(payable date)
$0.16500
(3/25/2015)
$0.20000
(6/24/2015)
$0.20000
(9/24/2015)
$0.25250
(12/24/2015)
$0.81750
 
2014
(payable date)
$0.22500
(3/25/2014)
$0.24000
(6/24/2014)
$0.27000
(9/24/2014)
$0.26000
(12/24/2014)
$0.99500
 
2013
(payable date)
$0.21500
(3/22/2013)
$0.25250
(6/24/2013)
$0.24999
(9/24/2013)
$0.24500
(12/24/2013)
$0.96249
 
2012
(payable date)
$0.21500
(3/26/2012)
$0.26000
(6/25/2012)
$0.28500
(9/24/2012)
$0.36000
(12/24/2012)
$1.12000
 
2011
(payable date)
$0.21000
(3/25/2011)
$0.26000
(6/24/2011)
$0.32000
(9/26/2011)
$0.37500
(12/23/2011)
$1.16500
 
2010
(payable date)
$0.19800
(3/26/2010)
$0.25000
(6/25/2010)
$0.32000
(9/24/2010)
$0.36000
(12/27/2010)
$1.12800
 
2009
(payable date)
$0.18000
(3/26/2009)
$0.24200
(6/26/2009)
$0.28000
(9/25/2009)
$0.34500
(12/24/2009)
$1.04700
 
2008
(payable date)
$0.17900
(3/26/2008)
$0.21750
(6/26/2008)
$0.26000
(9/26/2008)
$0.36800
(12/26/2008)
$1.02450
 
2007
(payable date)
$0.14200
(3/26/2007)
$0.18500
(6/26/2007)
$0.21500
(9/26/2007)
$0.36800
(12/26/2007)
$0.91000
 
2006
(payable date)
$0.12500
(3/31/2006)
$0.16000
(6/28/2006)
$0.19200
(9/27/2006)
$0.33000
(12/26/2006)
$0.80700
 
2005
(payable date)
$0.11000
(3/31/2005)
$0.13600
(6/30/2005)
$0.17400
(9/30/2005)
$0.29000
(12/31/2005)
$0.71000
 
2004
(payable date)
$0.10200
(3/31/2004)
$0.12500
(6/30/2004)
$0.15000
(9/30/2004)
$0.21800
(12/31/2004)
$0.59500
 
2003
(payable date)
$0.09200
(3/31/2003)
$0.11200
(6/30/2003)
$0.12400
(9/30/2003)
$0.17500
(12/31/2003)
$0.50300
 
Show All Years

Dividend History  — class C shares

Q1Q2Q3Q4ANNUAL
TOTAL
2017
(payable date)
$0.13647
(3/24/2017)
$0.16250
(6/23/2017)
$0.22225
(9/22/2017)
$0.52122
 
2016
(payable date)
$0.13946
(3/24/2016)
$0.15061
(6/24/2016)
$0.15901
(9/26/2016)
$0.18046
(12/23/2016)
$0.62955
 
2015
(payable date)
$0.12890
(3/25/2015)
$0.15973
(6/24/2015)
$0.16298
(9/24/2015)
$0.21759
(12/24/2015)
$0.66920
 
2014
(payable date)
$0.18957
(3/25/2014)
$0.20036
(6/24/2014)
$0.23195
(9/24/2014)
$0.22172
(12/24/2014)
$0.84360
 
2013
(payable date)
$0.18229
(3/22/2013)
$0.21561
(6/24/2013)
$0.21477
(9/24/2013)
$0.20739
(12/24/2013)
$0.82005
 
2012
(payable date)
$0.18446
(3/26/2012)
$0.22875
(6/25/2012)
$0.25327
(9/24/2012)
$0.32694
(12/24/2012)
$0.99342
 
2011
(payable date)
$0.17718
(3/25/2011)
$0.22540
(6/24/2011)
$0.28921
(9/26/2011)
$0.34532
(12/23/2011)
$1.03711
 
2010
(payable date)
$0.16906
(3/26/2010)
$0.22063
(6/25/2010)
$0.29281
(9/24/2010)
$0.33014
(12/27/2010)
$1.01264
 
2009
(payable date)
$0.16407
(3/26/2009)
$0.22087
(6/26/2009)
$0.25368
(9/25/2009)
$0.31774
(12/24/2009)
$0.95636
 
2008
(payable date)
$0.14461
(3/26/2008)
$0.18460
(6/26/2008)
$0.23070
(9/26/2008)
$0.34814
(12/26/2008)
$0.90805
 
2007
(payable date)
$0.11190
(3/26/2007)
$0.15105
(6/26/2007)
$0.18076
(9/26/2007)
$0.32985
(12/26/2007)
$0.77356
 
2006
(payable date)
$0.10230
(3/31/2006)
$0.13527
(6/28/2006)
$0.16530
(9/27/2006)
$0.30160
(12/26/2006)
$0.70447
 
2005
(payable date)
$0.09110
(3/31/2005)
$0.11690
(6/30/2005)
$0.15620
(9/30/2005)
$0.26841
(12/31/2005)
$0.63261
 
2004
(payable date)
$0.08400
(3/31/2004)
$0.10900
(6/30/2004)
$0.13600
(9/30/2004)
$0.20240
(12/31/2004)
$0.53140
 
2003
(payable date)
$0.08300
(3/31/2003)
$0.09500
(6/30/2003)
$0.10400
(9/30/2003)
$0.15900
(12/31/2003)
$0.44100
 
Show All Years

Dividend History  — class I shares

Q1Q2Q3Q4ANNUAL
TOTAL
2017
(payable date)
$0.18636
(3/24/2017)
$0.21816
(6/23/2017)
$0.27894
(9/22/2017)
$0.68346
 
2016
(payable date)
$0.18533
(3/24/2016)
$0.20181
(6/24/2016)
$0.21226
(9/26/2016)
$0.23274
(12/23/2016)
$0.83213
 
2015
(payable date)
$0.18176
(3/25/2015)
$0.21845
(6/24/2015)
$0.21839
(9/24/2015)
$0.27008
(12/24/2015)
$0.88868
 
2014
(payable date)
$0.24253
(3/25/2014)
$0.25914
(6/24/2014)
$0.28921
(9/24/2014)
$0.27963
(12/24/2014)
$1.07052
 
2013
(payable date)
$0.23086
(3/22/2013)
$0.27152
(6/24/2013)
$0.26844
(9/24/2013)
$0.26418
(12/24/2013)
$1.03500
 
2012
(payable date)
$0.23093
(3/26/2012)
$0.27509
(6/25/2012)
$0.30097
(9/24/2012)
$0.37770
(12/24/2012)
$1.18469
 
2011
(payable date)
$0.22726
(3/25/2011)
$0.27880
(6/24/2011)
$0.33844
(9/26/2011)
$0.39262
(12/23/2011)
$1.23712
 
2010
(payable date)
$0.21267
(3/26/2010)
$0.26686
(6/25/2010)
$0.33574
(9/24/2010)
$0.37783
(12/27/2010)
$1.19310
 
2009
(payable date)
$0.19159
(3/26/2009)
$0.25623
(6/26/2009)
$0.29438
(9/25/2009)
$0.36189
(12/24/2009)
$1.10409
 
2008
(payable date)
$0.19754
(3/26/2008)
$0.23790
(6/26/2008)
$0.27987
(9/26/2008)
$0.38343
(12/26/2008)
$1.09874
 
2007
(payable date)
$0.16190
(3/26/2007)
$0.20630
(6/26/2007)
$0.23570
(9/26/2007)
$0.39029
(12/26/2007)
$0.99419
 
2006
(payable date)
$0.14446
(3/31/2006)
$0.17964
(6/28/2006)
$0.21220
(9/27/2006)
$0.35020
(12/26/2006)
$0.88650
 
2005
(payable date)
$0.11589
(3/31/2005)
$0.14193
(6/30/2005)
$0.18030
(9/30/2005)
$0.29711
(12/31/2005)
$0.73523
 
2004
(payable date)
$0.11700
(3/31/2004)
$0.13600
(6/30/2004)
$0.16000
(9/30/2004)
$0.22700
(12/31/2004)
$0.64000
 
2003
(payable date)
$0.14500
(12/31/2003)
$0.14500
 
Show All Years

Dividend History  — class R3 shares

Q1Q2Q3Q4ANNUAL
TOTAL
2017
(payable date)
$0.15516
(3/24/2017)
$0.18311
(6/23/2017)
$0.24341
(9/22/2017)
$0.58168
 
2016
(payable date)
$0.15683
(3/24/2016)
$0.16977
(6/24/2016)
$0.17891
(9/26/2016)
$0.20005
(12/23/2016)
$0.70555
 
2015
(payable date)
$0.14849
(3/25/2015)
$0.18155
(6/24/2015)
$0.18392
(9/24/2015)
$0.23710
(12/24/2015)
$0.75106
 
2014
(payable date)
$0.20981
(3/25/2014)
$0.22188
(6/24/2014)
$0.25402
(9/24/2014)
$0.24300
(12/24/2014)
$0.92872
 
2013
(payable date)
$0.20028
(3/22/2013)
$0.23607
(6/24/2013)
$0.23506
(9/24/2013)
$0.22932
(12/24/2013)
$0.90073
 
2012
(payable date)
$0.20226
(3/26/2012)
$0.24667
(6/25/2012)
$0.27166
(9/24/2012)
$0.34561
(12/24/2012)
$1.06620
 
2011
(payable date)
$0.19536
(3/25/2011)
$0.24497
(6/24/2011)
$0.30778
(9/26/2011)
$0.36229
(12/23/2011)
$1.11040
 
2010
(payable date)
$0.18613
(3/26/2010)
$0.23836
(6/25/2010)
$0.31035
(9/24/2010)
$0.34746
(12/27/2010)
$1.08230
 
2009
(payable date)
$0.17498
(3/26/2009)
$0.23535
(6/26/2009)
$0.26980
(9/25/2009)
$0.33458
(12/24/2009)
$1.01471
 
2008
(payable date)
$0.16445
(3/26/2008)
$0.20520
(6/26/2008)
$0.24943
(9/26/2008)
$0.36142
(12/26/2008)
$0.98050
 
2007
(payable date)
$0.13231
(3/26/2007)
$0.17337
(6/26/2007)
$0.20372
(9/26/2007)
$0.35230
(12/26/2007)
$0.86170
 
2006
(payable date)
$0.12017
(3/31/2006)
$0.15397
(6/28/2006)
$0.18500
(9/27/2006)
$0.32050
(12/26/2006)
$0.77964
 
2005
(payable date)
$0.03800
(3/31/2005)
$0.13400
(6/30/2005)
$0.17300
(9/30/2005)
$0.28600
(12/31/2005)
$0.63100
 
Show All Years

Dividend History  — class R4 shares

Q1Q2Q3Q4ANNUAL
TOTAL
2017
(payable date)
$0.16018
(3/24/2017)
$0.18879
(6/23/2017)
$0.24924
(9/22/2017)
$0.59821
 
2016
(payable date)
$0.16168
(3/24/2016)
$0.17492
(6/24/2016)
$0.18453
(9/26/2016)
$0.20666
(12/23/2016)
$0.72779
 
2015
(payable date)
$0.15564
(3/25/2015)
$0.18803
(6/24/2015)
$0.18989
(9/24/2015)
$0.24239
(12/24/2015)
$0.77595
 
2014
(payable date)
$0.21814
(3/25/2014)
$0.22947
(6/24/2014)
$0.26185
(9/24/2014)
$0.25084
(12/24/2014)
$0.96030
 
2013
(payable date)
$0.20643
(3/22/2013)
$0.24235
(6/24/2013)
$0.24101
(9/24/2013)
$0.23768
(12/24/2013)
$0.92747
 
2012
(payable date)
$0.20653
(3/26/2012)
$0.25164
(6/25/2012)
$0.27684
(9/24/2012)
$0.35323
(12/24/2012)
$1.08824
 
2011
(payable date)
$0.20032
(3/25/2011)
$0.25062
(6/24/2011)
$0.31416
(9/26/2011)
$0.36797
(12/23/2011)
$1.13307
 
2010
(payable date)
$0.19067
(3/26/2010)
$0.24320
(6/25/2010)
$0.31534
(9/24/2010)
$0.35276
(12/27/2010)
$1.10197
 
2009
(payable date)
$0.17889
(3/26/2009)
$0.24019
(6/26/2009)
$0.27521
(9/25/2009)
$0.33959
(12/24/2009)
$1.03388
 
2008
(payable date)
$0.06801
(3/26/2008)
$0.22020
(6/26/2008)
$0.25534
(9/26/2008)
$0.36674
(12/26/2008)
$0.91029
 
Show All Years

Dividend History  — class R5 shares

Q1Q2Q3Q4ANNUAL
TOTAL
2017
(payable date)
$0.18041
(3/24/2017)
$0.21109
(6/23/2017)
$0.27209
(9/22/2017)
$0.66358
 
2016
(payable date)
$0.18014
(3/24/2016)
$0.19546
(6/24/2016)
$0.20549
(9/26/2016)
$0.22665
(12/23/2016)
$0.80774
 
2015
(payable date)
$0.17557
(3/25/2015)
$0.21084
(6/24/2015)
$0.21200
(9/24/2015)
$0.26368
(12/24/2015)
$0.86210
 
2014
(payable date)
$0.23491
(3/25/2014)
$0.25090
(6/24/2014)
$0.28415
(9/24/2014)
$0.27265
(12/24/2014)
$1.04262
 
2013
(payable date)
$0.22434
(3/22/2013)
$0.26391
(6/24/2013)
$0.26261
(9/24/2013)
$0.25587
(12/24/2013)
$1.00673
 
2012
(payable date)
$0.22540
(3/26/2012)
$0.27131
(6/25/2012)
$0.29708
(9/24/2012)
$0.37187
(12/24/2012)
$1.16566
 
2011
(payable date)
$0.22009
(3/25/2011)
$0.27163
(6/24/2011)
$0.33391
(9/26/2011)
$0.38647
(12/23/2011)
$1.21210
 
2010
(payable date)
$0.20924
(3/26/2010)
$0.26274
(6/25/2010)
$0.34316
(9/24/2010)
$0.37393
(12/27/2010)
$1.18907
 
2009
(payable date)
$0.19153
(3/26/2009)
$0.25563
(6/26/2009)
$0.29244
(9/25/2009)
$0.35856
(12/24/2009)
$1.09816
 
2008
(payable date)
$0.19164
(3/26/2008)
$0.23370
(6/26/2008)
$0.27591
(9/26/2008)
$0.38166
(12/26/2008)
$1.08291
 
2007
(payable date)
$0.10998
(3/26/2007)
$0.20409
(6/26/2007)
$0.23354
(9/26/2007)
$0.38442
(12/26/2007)
$0.93203
 
Show All Years

Dividend History  — class R6 shares

Q1Q2Q3Q4ANNUAL
TOTAL
2017
(payable date)
$0.22121
(6/23/2017)
$0.29198
(9/22/2017)
$0.51319
 
Show All Years

HYPOTHETICAL GROWTH OF $10,000 as of 10/31/2017(Thornburg Investment Income Builder Fund vs. Blended Index)

  • A shares with sales charge$37,447
  • Blended Index$30,298
The Hypothetical Growth of $10,000 graph compares a hypothetical $10,000 investment in the Fund to the performance of the Index for the stated time period. Returns reflect reinvestment of dividends and capital gains, if any, as well as all fees and expenses.

HYPOTHETICAL GROWTH OF $10,000 as of 10/31/2017(Thornburg Investment Income Builder Fund vs. Blended Index)

  • C shares$35,787
  • Blended Index$30,298
The Hypothetical Growth of $10,000 graph compares a hypothetical $10,000 investment in the Fund to the performance of the Index for the stated time period. Returns reflect reinvestment of dividends and capital gains, if any, as well as all fees and expenses.

HYPOTHETICAL GROWTH OF $10,000 as of 10/31/2017(Thornburg Investment Income Builder Fund vs. Blended Index)

  • I shares$41,341
  • Blended Index$30,298
The Hypothetical Growth of $10,000 graph compares a hypothetical $10,000 investment in the Fund to the performance of the Index for the stated time period. Returns reflect reinvestment of dividends and capital gains, if any, as well as all fees and expenses.

Prior to inception of this share class, performance is calculated from actual returns of the class A shares adjusted for the expenses of the newer share class.

HYPOTHETICAL GROWTH OF $10,000 as of 10/31/2017(Thornburg Investment Income Builder Fund vs. Blended Index)

  • R3 shares$37,845
  • Blended Index$30,298
The Hypothetical Growth of $10,000 graph compares a hypothetical $10,000 investment in the Fund to the performance of the Index for the stated time period. Returns reflect reinvestment of dividends and capital gains, if any, as well as all fees and expenses.

Prior to inception of this share class, performance is calculated from actual returns of the class A shares adjusted for the expenses of the newer share class.

HYPOTHETICAL GROWTH OF $10,000 as of 10/31/2017(Thornburg Investment Income Builder Fund vs. Blended Index)

  • R4 shares$38,586
  • Blended Index$30,298
The Hypothetical Growth of $10,000 graph compares a hypothetical $10,000 investment in the Fund to the performance of the Index for the stated time period. Returns reflect reinvestment of dividends and capital gains, if any, as well as all fees and expenses.

Prior to inception of this share class, performance is calculated from actual returns of the class A shares adjusted for the expenses of the newer share class.

HYPOTHETICAL GROWTH OF $10,000 as of 10/31/2017(Thornburg Investment Income Builder Fund vs. Blended Index)

  • R5 shares$40,973
  • Blended Index$30,298
The Hypothetical Growth of $10,000 graph compares a hypothetical $10,000 investment in the Fund to the performance of the Index for the stated time period. Returns reflect reinvestment of dividends and capital gains, if any, as well as all fees and expenses.

Prior to inception of this share class, performance is calculated from actual returns of the class A shares adjusted for the expenses of the newer share class.

HYPOTHETICAL GROWTH OF $10,000 as of 10/31/2017(Thornburg Investment Income Builder Fund vs. Blended Index)

  • R6 shares$41,207
  • Blended Index$30,298
The Hypothetical Growth of $10,000 graph compares a hypothetical $10,000 investment in the Fund to the performance of the Index for the stated time period. Returns reflect reinvestment of dividends and capital gains, if any, as well as all fees and expenses.

Prior to inception of this share class, performance is calculated from actual returns of the class A shares adjusted for the expenses of the newer share class.

Important Information
Before investing, carefully consider the Fund’s investment goals, risks, charges, and expenses. For a prospectus or summary prospectus containing this and other information, contact your financial advisor or visit our literature center. Read them carefully before investing.

Investments carry risks, including possible loss of principal. Additional risks may be associated with investments outside the United States, especially in emerging markets, including currency fluctuations, illiquidity, volatility, and political and economic risks. Investments in small- and mid-capitalization companies may increase the risk of greater price fluctuations. Portfolios investing in bonds have the same interest rate, inflation, and credit risks that are associated with the underlying bonds. The value of bonds will fluctuate relative to changes in interest rates, decreasing when interest rates rise. Investments in the Fund are not FDIC insured, nor are they bank deposits or guaranteed by a bank or any other entity.

The performance of any index is not indicative of the performance of any particular investment. Unless otherwise noted, index returns reflect the reinvestment of income dividends and capital gains, if any, but do not reflect fees, brokerage commissions or other expenses of investing. Investors may not make direct investments into any index.

Thornburg Investment Income Builder Fund's Blended Index is composed of 25% Bloomberg Barclays U.S. Aggregate Bond Index and 75% MSCI World Index, rebalanced monthly.

Diversification does not assure or guarantee better performance and cannot eliminate the risk of investment losses.

Dividends are not guaranteed.

A bond credit rating assesses the financial ability of a debt issuer to make timely payments of principal and interest. Ratings of AAA (the highest), AA, A, and BBB are investment-grade quality. Ratings of BB, B, CCC, CC, C and D (the lowest) are considered below investment grade, speculative grade, or junk bonds.

Credit quality ratings for Thornburg Investment Income Builder used ratings from Moody’s Investors Service. Where Moody’s ratings are not available, we have used S&P Global Ratings. Where neither rating is available, we have used ratings from other nationally recognized statistical rating organizations (NRSROs).

Class R shares are limited to retirement platforms only.

Class I shares may not be available to all investors. Minimum investments for the I share class may be higher than those for other classes.

There is no guarantee that the Fund will meet its investment objectives.

Please see our glossary for a definition of terms.

Thornburg mutual funds are distributed by Thornburg Securities Corporation.

Thornburg Investment Management, Inc. mutual funds are sold through investment professionals including investment advisors, brokerage firms, bank trust departments, trust companies and certain other financial intermediaries. Thornburg Securities Corporation (TSC) does not act as broker of record for investors.