TSUMX

Thornburg Summit Fund

Morningstar Rating • Info

Overall Morningstar Rating among 401 Global Moderate Allocation funds, based on risk-adjusted returns for class I shares, using a weighted average of the funds three-, five-, and ten-year ratings: respectively, 5 stars, 4 stars and star among 401, 388 and 324 funds, as of 31 Aug 2026.

As of 31 Aug 2026

Fund Assets

$125.1 M

As of 31 Aug 2026

NAV

$15.58

As of 23 Sep 2026

Change

$-0.08

As of 23 Sep 2026

YTD NAV Performance

9.40%

As of 23 Sep 2026

Asset Category:

Multi-Asset

Fund Benchmark:

Multi-Asset - Summit Fund Blended Index

Portfolio Managers

Neal BasuMullick, CFA

Portfolio Manager and Managing Director

Lon Erickson, CFA

Portfolio Manager and Managing Director

Overview Performance Fund Facts Characteristics Portfolio Portfolio Managers Literature

Overview

Why Invest in This Fund?

Global, diversified multi-asset strategy that seeks to grow assets over time through a mix of capital appreciation and current income that is intended to exceed the rate of inflation.
Proven bottom-up fundamental research process that drives dynamic asset allocation and security selection to optimize equity, fixed income and commodity exposure and alpha generation across different market environments.
Real return philosophy that seeks to outperform the benchmark and deliver a real return exceeding the rate of inflation through market cycles and with lower volatility.

Investment Objective

The fund’s goal is to provide investors with capital appreciation and current income that is intended to exceed the rate of inflation.

Investment Approach

The fund applies a dynamic asset allocation, bottom-up fundamental research, macroeconomic perspective and factor insights to construct a global, multi-asset portfolio designed to deliver attractive real returns across various market environments.

Returns

(As of 30 Jun 2026)

YTD

Inception

Total Return (%)

7.11

18.62

14.72

8.55

12.39

Multi-Asset - Summit Fund Blended Index (%)

6.66

14.07

13.04

5.95

8.24

Morningstar Category Avg. (%)

8.07

16.58

12.95

6.47

—

Morningstar Quartile

—

Morningstar Quartile # of Funds

—

409

402

389

—

YTD

Inception

Total Return (%)

11.37

17.73

15.99

8.92

12.68

Multi-Asset - Summit Fund Blended Index (%)

8.38

13.32

13.57

5.81

8.27

Morningstar Category Avg. (%)

10.16

15.66

13.49

6.52

—

Morningstar Quartile

—

Morningstar Quartile # of Funds

—

408

401

388

—

YTD

Inception

Total Return (%)

7.11

18.62

50.98

50.74

135.48

Multi-Asset - Summit Fund Blended Index (%)

6.66

14.07

44.45

33.49

78.64

YTD

Inception

Total Return (%)

11.37

17.73

56.05

53.30

144.85

Multi-Asset - Summit Fund Blended Index (%)

8.38

13.32

46.49

32.60

81.52

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025

Total Return (%)

—

27.78

14.64

-9.78

12.86

11.41

20.53

Multi-Asset - Summit Fund Blended Index (%)

—

14.05

8.78

-17.33

15.43

9.49

16.60

Periods less than one year are not annualized.

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.

Source: Confluence

Morningstar quartile ranking for Global Moderate Allocation category is based on total returns before sales charges.

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

Share class inception dates: A shares, 26 Jan 2022; I shares, 1 Mar 2019.

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

Thornburg Summit Fund's Blended Index is composed of 60% MSCI ACWI Net Total Return USD Index and 40% Bloomberg Global-Aggregate Total Return Index Value Unhedged USD, rebalanced monthly.

Fund Fees

(As of 1 Feb 2026)

Gross Expense Ratio (%)

1.21

Net Expense Ratio (%)

0.70

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.

Hypothetical Growth of $10,000

(As of 31 Aug 2026)

(Hypothetical Growth of $10,000 vs Multi-Asset - Summit Fund Blended Index)

Categories,I Shares,Multi-Asset - Summit Fund Blended Index                        
2025-08-31,10000,10000
2025-09-30,10181,10244
2025-10-31,10361,10371
2025-11-30,10433,10380
2025-12-31,10571,10456
2026-01-31,11007,10681
2026-02-28,11239,10811
2026-03-31,10746,10212
2026-04-30,11318,10886
2026-05-31,11582,11238
2026-06-30,11322,11152
2026-07-31,11507,11133
2026-08-31,11773,11332

Categories,I Shares,Multi-Asset - Summit Fund Blended Index                        
2023-08-31,10000,10000
2023-09-30,9685,9635
2023-10-31,9488,9415
2023-11-30,10062,10127
2023-12-31,10434,10587
2024-01-31,10554,10565
2024-02-29,10727,10784
2024-03-31,10995,11011
2024-04-30,10761,10682
2024-05-31,11082,10998
2024-06-30,11345,11152
2024-07-31,11441,11383
2024-08-31,11633,11664
2024-09-30,11841,11906
2024-10-31,11586,11586
2024-11-30,11775,11862
2024-12-31,11625,11592
2025-01-31,11959,11851
2025-02-28,11959,11876
2025-03-31,11698,11624
2025-04-30,11762,11826
2025-05-31,12197,12217
2025-06-30,12652,12639
2025-07-31,12871,12666
2025-08-31,13255,12927
2025-09-30,13495,13242
2025-10-31,13733,13407
2025-11-30,13829,13418
2025-12-31,14011,13516
2026-01-31,14589,13807
2026-02-28,14898,13975
2026-03-31,14244,13201
2026-04-30,15002,14073
2026-05-31,15352,14528
2026-06-30,15008,14417
2026-07-31,15252,14392
2026-08-31,15605,14649

Categories,I Shares,Multi-Asset - Summit Fund Blended Index                        
2021-08-31,10000,10000
2021-09-30,9747,9681
2021-10-31,10007,9968
2021-11-30,9806,9812
2021-12-31,10067,10042
2022-01-31,9890,9664
2022-02-28,9745,9469
2022-03-31,9773,9476
2022-04-30,9320,8813
2022-05-31,9425,8829
2022-06-30,8844,8269
2022-07-31,9202,8686
2022-08-31,9007,8357
2022-09-30,8445,7705
2022-10-31,8675,7963
2022-11-30,9240,8484
2022-12-31,9082,8302
2023-01-31,9544,8768
2023-02-28,9289,8500
2023-03-31,9492,8765
2023-04-30,9625,8856
2023-05-31,9542,8730
2023-06-30,9765,9034
2023-07-31,9958,9257
2023-08-31,9824,9052
2023-09-30,9514,8721
2023-10-31,9321,8522
2023-11-30,9885,9166
2023-12-31,10250,9583
2024-01-31,10369,9563
2024-02-29,10538,9762
2024-03-31,10802,9967
2024-04-30,10572,9669
2024-05-31,10887,9955
2024-06-30,11145,10094
2024-07-31,11240,10303
2024-08-31,11429,10558
2024-09-30,11632,10777
2024-10-31,11382,10487
2024-11-30,11568,10737
2024-12-31,11420,10492
2025-01-31,11749,10727
2025-02-28,11749,10750
2025-03-31,11493,10522
2025-04-30,11555,10704
2025-05-31,11983,11058
2025-06-30,12429,11440
2025-07-31,12645,11465
2025-08-31,13022,11701
2025-09-30,13257,11986
2025-10-31,13492,12135
2025-11-30,13586,12145
2025-12-31,13765,12234
2026-01-31,14333,12498
2026-02-28,14636,12650
2026-03-31,13993,11949
2026-04-30,14738,12738
2026-05-31,15081,13150
2026-06-30,14744,13049
2026-07-31,14984,13027
2026-08-31,15330,13260

Categories,I Shares,Multi-Asset - Summit Fund Blended Index                        
2019-03-01,10000,10000
2019-03-31,10190,10108
2019-04-30,10390,10301
2019-05-31,10200,9990
2019-06-30,10461,10471
2019-07-31,10391,10478
2019-08-31,10511,10414
2019-09-30,10545,10503
2019-10-31,10606,10704
2019-11-30,10715,10828
2019-12-31,10976,11082
2020-01-31,10976,11065
2020-02-29,10630,10559
2020-03-31,9958,9609
2020-04-30,10737,10302
2020-05-31,11302,10589
2020-06-30,11660,10829
2020-07-31,12071,11311
2020-08-31,12635,11720
2020-09-30,12491,11476
2020-10-31,12286,11313
2020-11-30,13180,12232
2020-12-31,14025,12638
2021-01-31,13885,12559
2021-02-28,14843,12647
2021-03-31,14781,12753
2021-04-30,15316,13152
2021-05-31,15524,13324
2021-06-30,15622,13382
2021-07-31,15710,13509
2021-08-31,15972,13689
2021-09-30,15568,13253
2021-10-31,15983,13646
2021-11-30,15662,13433
2021-12-31,16078,13748
2022-01-31,15796,13230
2022-02-28,15565,12962
2022-03-31,15609,12972
2022-04-30,14886,12065
2022-05-31,15054,12087
2022-06-30,14126,11320
2022-07-31,14698,11891
2022-08-31,14386,11441
2022-09-30,13489,10548
2022-10-31,13855,10901
2022-11-30,14758,11614
2022-12-31,14506,11365
2023-01-31,15244,12003
2023-02-28,14836,11637
2023-03-31,15161,11999
2023-04-30,15373,12124
2023-05-31,15241,11951
2023-06-30,15597,12367
2023-07-31,15906,12673
2023-08-31,15691,12391
2023-09-30,15196,11939
2023-10-31,14887,11666
2023-11-30,15788,12548
2023-12-31,16371,13118
2024-01-31,16561,13092
2024-02-29,16831,13363
2024-03-31,17253,13644
2024-04-30,16886,13236
2024-05-31,17389,13628
2024-06-30,17801,13818
2024-07-31,17952,14105
2024-08-31,18254,14453
2024-09-30,18579,14753
2024-10-31,18179,14356
2024-11-30,18476,14698
2024-12-31,18240,14363
2025-01-31,18765,14685
2025-02-28,18765,14716
2025-03-31,18356,14403
2025-04-30,18456,14653
2025-05-31,19139,15138
2025-06-30,19852,15661
2025-07-31,20196,15695
2025-08-31,20798,16018
2025-09-30,21174,16409
2025-10-31,21549,16612
2025-11-30,21699,16626
2025-12-31,21985,16748
2026-01-31,22892,17109
2026-02-28,23376,17317
2026-03-31,22350,16358
2026-04-30,23539,17438
2026-05-31,24088,18001
2026-06-30,23548,17864
2026-07-31,23932,17834
2026-08-31,24485,18152

The Hypothetical Growth graph compares a hypothetical 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.

Distributions

            Categories,Total ($)
            2019-03-31,0
2019-06-30,0.05120
2019-09-30,0.02375
2019-11-14,0.04852
2019-12-31,0.06778
2020-03-31,0.06534
2020-06-30,0
2020-09-30,0
2020-11-19,0.58471
2020-12-31,0.01594
2021-03-31,0.20265
2021-06-30,0
2021-09-30,0
2021-11-18,2.16796
2021-12-31,0.03483
2022-03-31,0.06401
2022-06-30,0.07110
2022-09-30,0.07327
2022-12-31,0.07852
2023-03-31,0.05540
2023-06-30,0.15036
2023-09-30,0.03206
2023-12-31,0.06310
2024-03-31,0.07121
2024-06-30,0.11328
2024-09-30,0.07709
2024-11-21,0.29065
2024-12-31,0.07222
2025-03-31,0.04250
2025-06-30,0.10861
2025-09-30,0.07240
2025-11-20,0.55237
2025-12-31,0.12817
2026-03-31,0.12260
2026-06-30,0.11677
2026-09-30,0.07791

            Payable Date,Total ($),Income ($),ST Cap Gains ($),LT Cap Gains ($)
2019-03-31,0,0,0,0
2019-06-21,0.05120,0.05120,0,0
2019-09-20,0.02375,0.02375,0,0
2019-11-14,0.04852,0,0.04852,0.00000
2019-12-20,0.06778,0.06778,0,0
2020-03-19,0.06534,0.06534,0,0
2020-06-30,0,0,0,0
2020-09-30,0,0,0,0
2020-11-19,0.58471,0,0.47739,0.10732
2020-12-17,0.01594,0.01594,0,0
2021-03-18,0.20265,0.20265,0,0
2021-06-30,0,0,0,0
2021-09-30,0,0,0,0
2021-11-18,2.16796,0,1.77863,0.38933
2021-12-16,0.03483,0.03483,0,0
2022-03-17,0.06401,0.06401,0,0
2022-06-16,0.07110,0.07110,0,0
2022-09-15,0.07327,0.07327,0,0
2022-12-15,0.07852,0.07852,0,0
2023-03-16,0.05540,0.05540,0,0
2023-06-15,0.15036,0.15036,0,0
2023-09-14,0.03206,0.03206,0,0
2023-12-14,0.06310,0.06310,0,0
2024-03-14,0.07121,0.07121,0,0
2024-06-20,0.11328,0.11328,0,0
2024-09-19,0.07709,0.07709,0,0
2024-11-21,0.29065,0,0.02494,0.26571
2024-12-19,0.07222,0.07222,0,0
2025-03-20,0.04250,0.04250,0,0
2025-06-17,0.10861,0.10861,0,0
2025-09-18,0.07240,0.07240,0,0
2025-11-20,0.55237,0,0.09408,0.45829
2025-12-18,0.12817,0.12817,0,0
2026-03-19,0.12260,0.12260,0,0
2026-06-17,0.11677,0.11677,0,0
2026-09-17,0.07791,0.07791,0,0

Distributions

(As of 17 Sep 2026)

Payable Date

Total

Income

ST Cap Gains

LT Cap Gains

31 Mar 2019

—

21 Jun 2019

$0.05120

—

20 Sep 2019

$0.02375

—

14 Nov 2019

$0.04852

—

$0.04852

$0.00000

20 Dec 2019

$0.06778

—

19 Mar 2020

$0.06534

—

30 Jun 2020

—

30 Sep 2020

—

19 Nov 2020

$0.58471

—

$0.47739

$0.10732

17 Dec 2020

$0.01594

—

18 Mar 2021

$0.20265

—

30 Jun 2021

—

30 Sep 2021

—

18 Nov 2021

$2.16796

—

$1.77863

$0.38933

16 Dec 2021

$0.03483

—

17 Mar 2022

$0.06401

—

16 Jun 2022

$0.07110

—

15 Sep 2022

$0.07327

—

15 Dec 2022

$0.07852

—

16 Mar 2023

$0.05540

—

15 Jun 2023

$0.15036

—

14 Sep 2023

$0.03206

—

14 Dec 2023

$0.06310

—

14 Mar 2024

$0.07121

—

20 Jun 2024

$0.11328

—

19 Sep 2024

$0.07709

—

21 Nov 2024

$0.29065

—

$0.02494

$0.26571

19 Dec 2024

$0.07222

—

20 Mar 2025

$0.04250

—

17 Jun 2025

$0.10861

—

18 Sep 2025

$0.07240

—

20 Nov 2025

$0.55237

—

$0.09408

$0.45829

18 Dec 2025

$0.12817

—

19 Mar 2026

$0.12260

—

17 Jun 2026

$0.11677

—

17 Sep 2026

$0.07791

—

Fund Facts

(As of 31 Aug 2026)

Net Fund Assets

$125.1 M

Benchmark

Multi-Asset - Summit Fund Blended Index

Morningstar Category

Global Moderate Allocation

Fund Symbol

TSUMX

Share Class

Share Class Inception Date

1 Mar 2019

Distribution Frequency

Quarterly

Characteristics

Portfolio

(As of 31 Aug 2026)

Portfolio

Benchmark

Number of Holdings

225

—

Weighted Average Market Cap

$758.3 B

$1,075.6 B

Median Market Cap

$131.5 B

$19.3 B

Annual Portfolio Turnover

33%

—

Price to Earnings - Forward 1YR

14.8x

18.2x

Price to Earnings - Trailing 12 Months

25.8x

25.2x

Price to Cash Flow

10.8x

15.5x

Price to Book Value

3.2x

3.8x

Portfolio

Benchmark

Active Share

79.1%

—

Effective Duration

5.5 Yrs

6.1 Yrs

Average Effective Maturity

7.4 Yrs

8.0 Yrs

Weighted Average Coupon

3.8%

3.1%

Yield to Worst

6.2%

4.1%

30-Day SEC Yield (Subsidized)

1.85%

—

30-Day SEC Yield (Unsubsidized)

1.42%

—

Annual Portfolio Turnover reflects data as of the Fund’s fiscal year end (9/30).

Risk & Return Profile

(As of 31 Aug 2026)

Annualized Alpha (%)

3.94

3.76

Beta

0.85

0.83

R-Squared (%)

88.30

93.26

Standard Deviation (%)

8.36

9.88

Sharpe Ratio

1.32

0.51

Information Ratio

0.70

0.94

Tracking Error (%)

3.18

3.19

Up Capture (%)

100.91

97.38

Down Capture (%)

77.33

76.16

Past performance does not guarantee future results.

Risk & Return Profile metrics are based on the I share class.

Portfolio

Top Holdings

(As of 31 Aug 2026)

Name

Ticker/Symbol

Sector

Weight %

Samsung Electronics Co. Ltd.

005930

Information Technology

3.3

Taiwan Semiconductor Manufacturing Co. Ltd.

2330

Information Technology

3.3

Lumine Group, Inc.

LMN

Information Technology

2.7

Zegona Communications plc

ZEG

Communication Services

2.6

Colliers International Group, Inc.

CIGI

Real Estate

2.5

Amazon.com, Inc.

AMZN

Consumer Discretionary

2.2

Citigroup, Inc.

Financials

1.8

Roko AB

ROKOB

Financials

1.8

Alphabet, Inc.

GOOGL

Communication Services

1.7

Orange S.A.

ORA

Communication Services

1.7

Name

Ticker/Symbol

Sector

Weight %

United States Treasury Note/Bond

91282CPZ8

Treasury Domestic

2.1

United States Treasury Note/Bond

912810UR7

Treasury Domestic

1.5

United States Treasury Note/Bond

912810RY6

Treasury Domestic

1.3

United States Treasury Strip Coupon

912834NF1

Treasury Domestic

1.2

Freddie Mac Pool

3132E0T85

Mortgage Passthrough

0.6

United States Treasury Note/Bond

91282CJJ1

Treasury Domestic

0.5

United States Treasury Strip Principal

912803HS5

Treasury Domestic

0.5

Fannie Mae Pool

31418F2K2

Mortgage Passthrough

0.5

United States Treasury Inflation Indexed Bonds

91282CPU9

Treasury Domestic

0.5

Fannie Mae Pool

31418EAN0

Mortgage Passthrough

0.4

Download Holdings

Portfolio holdings are subject to change daily.

Exposure Breakdown

(As of 31 Aug 2026)

Sector Allocation

Fund (%)

Benchmark (%)

Fund

Benchmark

10%

20%

30%

40%

Information Technology

31.4

31.2

Financials

16.1

16.9

Communication Services

14.1

7.7

Energy

10.2

4.0

Health Care

9.9

8.5

Consumer Discretionary

7.9

8.7

Industrials

5.0

10.6

Real Estate

4.1

1.6

Materials

1.3

3.8

Consumer Staples

0.0

4.7

Utilities

0.0

2.3

Unassigned

0.0

—

Sector Allocation

Fund (%)

Information Technology

31.4

Financials

16.1

Communication Services

14.1

Energy

10.2

Health Care

9.9

Consumer Discretionary

7.9

Industrials

5.0

Real Estate

4.1

Materials

1.3

Consumer Staples

0.0

Utilities

0.0

Unassigned

0.0

Top 10 Industries

Fund (%)

Benchmark (%)

Fund

Benchmark

10%

15%

20%

Software & Services

13.7

7.4

Semiconductors & Semiconductor Equipment

11.0

15.0

Energy

10.2

4.0

Financial Services

10.0

5.8

Telecommunication Services

9.0

1.5

Pharmaceuticals, Biotechnology & Life Sciences

7.6

6.1

Technology Hardware & Equipment

6.6

8.9

Banks

6.0

8.3

Consumer Discretionary Distribution & Retail

5.2

4.3

Media & Entertainment

5.1

6.2

Top 10 Industries

Fund (%)

Software & Services

13.7

Semiconductors & Semiconductor Equipment

11.0

Energy

10.2

Financial Services

10.0

Telecommunication Services

9.0

Pharmaceuticals, Biotechnology & Life Sciences

7.6

Technology Hardware & Equipment

6.6

Banks

6.0

Consumer Discretionary Distribution & Retail

5.2

Media & Entertainment

5.1

Top 10 Countries

Fund (%)

Benchmark (%)

Region

Portfolio

Benchmark

10%

20%

30%

40%

50%

60%

United States

59.1

54.5

North America

Canada

9.3

3.3

North America

United Kingdom

4.7

3.6

France

4.5

3.3

Europe ex UK

Korea, Republic of (South Korea)

3.3

2.0

Asia Pacific ex Japan

Taiwan

3.3

2.0

Asia Pacific ex Japan

Japan

2.2

6.2

Japan

Sweden

1.8

0.7

Europe ex UK

Switzerland

1.3

1.4

Europe ex UK

Hong Kong

0.7

0.3

Asia Pacific ex Japan

Top 10 Countries

Fund (%)

United States

59.1

Canada

9.3

United Kingdom

4.7

France

4.5

Korea, Republic of (South Korea)

3.3

Taiwan

3.3

Japan

2.2

Sweden

1.8

Switzerland

1.3

Hong Kong

0.7

Composition

Fund (%)

Benchmark (%)

Fund

Benchmark

10%

20%

30%

40%

50%

60%

70%

Equity

60.9

60.0

Fixed Income

33.6

40.0

Cash & Equivalents

5.5

—

Composition

Fund (%)

Equity

60.9

Fixed Income

33.6

Cash & Equivalents

5.5

Capitalization

Fund (%)

Benchmark (%)

Fund

Benchmark

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Large Cap (> $12 B)

75.3

97.5

Mid Cap ($2.5 to $12 B)

23.1

2.5

Small Cap (< $2.5 B)

1.6

0.0

Unassigned

0.0

—

Capitalization

Fund (%)

Large Cap (> $12 B)

75.3

Mid Cap ($2.5 to $12 B)

23.1

Small Cap (< $2.5 B)

1.6

Unassigned

0.0

Credit Quality

Fund (%)

Benchmark (%)

Fund

Benchmark

10%

20%

30%

40%

50%

U.S. Government

41.6

28.8

AAA

20.8

12.5

6.4

12.2

7.7

32.5

BBB

9.5

13.7

7.5

0.3

1.2

0.0

CCC

0.1

—

0.4

—

Not Rated

4.8

0.0

Credit Quality

Fund (%)

U.S. Government

41.6

AAA

20.8

6.4

7.7

BBB

9.5

7.5

1.2

CCC

0.1

0.4

Not Rated

4.8

Maturity

Fund (%)

Benchmark (%)

Fund

Benchmark

10%

20%

30%

40%

Year 1

20.5

1.0

Year 2

9.7

13.1

Year 3

7.0

11.4

Year 4

6.6

9.9

Year 5

8.0

10.4

Year 6

2.2

6.9

Year 7

4.6

7.4

Year 8

2.8

6.6

Year 9

1.5

7.6

Year 10+

37.1

25.7

Maturity

Fund (%)

Year 1

20.5

Year 2

9.7

Year 3

7.0

Year 4

6.6

Year 5

8.0

Year 6

2.2

Year 7

4.6

Year 8

2.8

Year 9

1.5

Year 10+

37.1

Sector, Industry, and Market Capitalization are based on the portfolio's equity holdings. Credit Quality and Maturity are based on the portfolio’s fixed income holdings. Geography and Asset Class are based on the full portfolio.

Weights are percentages of the total portfolio unless otherwise noted.

May not add up to 100% due to rounding.

Cash and Equivalents includes cash, short-term securities, other assets less liabilities, accruals, derivatives and forwards. It may also include investments in money market or similar funds managed by Thornburg that are not offered to the public.

Holdings with the Geography breakdown are classified by country of risk as determined by MSCI and Bloomberg.

Portfolio Managers

Neal BasuMullick, CFA

Portfolio Manager and Managing Director

Neal BasuMullick is a portfolio manager at Thornburg Investment Management. He joined the firm in 2020 as an equity research analyst, was promoted to senior equity analyst then associate portfolio manager in 2022 and to portfolio manager in 2024. Prior to joining Thornburg, Neal worked in equity research at Columbia Threadneedle Investments where he covered the business services and consumer…

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Lon Erickson, CFA

Portfolio Manager and Managing Director

Lon Erickson is a portfolio manager for Thornburg Investment Management. He joined Thornburg in 2008 and was named a managing director and was promoted to portfolio manager in 2010. Prior to joining Thornburg Investment Management, Lon spent almost 11 years as an analyst for State Farm Insurance in the equity and corporate bond departments. Lon earned a bachelor’s degree in…

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Literature

Fact Sheet

Commentary

Summary Prospectus

Annual Financial Statements

Semi-Annual Financial Statements

Prospectus

Statement of Additional Information (SAI)

Annual TSR

Semi-Annual TSR

Important Information

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.

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.

This communication is not authorized for distribution to prospective investors in the Fund unless preceded or accompanied by an effective prospectus.

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

Thornburg mutual funds are distributed by Thornburg Securities LLC.

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 LLC (TSL) does not act as broker of record for investors.

Please see our glossary for a definition of terms.

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.

Portfolio attributes and holdings can and do vary. Weights are percent of total portfolio, unless otherwise noted.

Short Sale Risk – A short sale involves the sale by the Fund of a security that the Fund has borrowed, but does not own, in anticipation of purchasing that same security at a lower price in the future in order to close the short position. If the value of the borrowed security increases between the date the Fund enters into the short sale and the date that the Fund buys that security to cover its short position, the Fund may experience a loss.

Derivatives Risk – The Fund’s investments in futures, interest rate swaps, and credit default swaps involve the risks associated with the securities or other assets underlying those derivatives, including the risk of changes in the value of the underlying assets between the date that the Fund enters into the derivatives transaction and the date that the Fund closes out that transaction. The Fund’s investments in futures, interest rate swaps, and credit default swaps also involve the risk that the other party to the transaction will be unable or unwilling to perform its obligations to the Fund, that the Fund will be unable to sell or close its positions in such derivatives or will be delayed in doing so, and that the Fund will have difﬁculty valuing such derivatives.

Commodities-Related Investment Risk – Investments that expose the Fund to the commodities market, such as commodity-linked derivatives instruments or exchange traded funds or other investment vehicles that invest in commodities, may subject the Fund to greater volatility than investments in other securities. The value of a commodity-related investment may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, risks affecting derivatives when used to obtain commodities exposure, or factors affecting a particular industry or commodity.

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TSUMX

Thornburg Summit Fund

Portfolio Managers

Overview

Why Invest in This Fund?

Investment Objective

Investment Approach

Related Content

Performance

Returns

Fund Fees

Hypothetical Growth of $10,000

Distributions

Fund Facts

Characteristics

Portfolio

Risk & Return Profile

Portfolio

Top Holdings

Exposure Breakdown

Portfolio Managers

Neal BasuMullick, CFA

Lon Erickson, CFA

Literature

Important Information

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Create an account to save this article or product.

TSUMX

Thornburg Summit Fund

Portfolio Managers

Overview

Why Invest in This Fund?

Investment Objective

Investment Approach

Related Content

Performance

Returns

Fund Fees

Hypothetical Growth of $10,000

Distributions

Fund Facts

Characteristics

Portfolio

Risk & Return Profile

Portfolio

Top Holdings

Exposure Breakdown

Portfolio Managers

Neal BasuMullick, CFA

Lon Erickson, CFA

Literature

Important Information

More Insights

Quality Without Dogma: Why Valuation Still Matters

Signal Over Noise: A Conversation on Global Markets

Hyperscalers at the Inflection