Thornburg Summit Fund

SYMBOL: TSUMX

Morningstar Rating • Info

Overall Morningstar Rating among 404 Allocation--30% to 50% Equity funds, based on risk-adjusted returns for class I shares, using a weighted average of the funds three- and five-year ratings: respectively, 5 stars and 5 stars among 404 and 387 funds, as of 30 Sep 2025.

As of 30 Sep 2025

Fund Assets

$97.2 M

As of 31 Aug 2025

NAV

$14.74

As of 13 Oct 2025

Change

$0.13

As of 13 Oct 2025

YTD NAV Performance

16.48%

As of 13 Oct 2025

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 Sep 2025)

YTD

Inception

Total Return (%)

16.09

13.97

16.22

11.13

12.07

Multi-Asset - Summit Fund Blended Index (%)

14.24

11.22

15.87

7.41

7.81

Morningstar Category Avg. (%)

7.79

11.28

8.12

—

Morningstar Quartile

—

Morningstar Quartile # of Funds

—

409

404

387

—

YTD

Inception

Total Return (%)

16.09

13.97

16.22

11.13

12.07

Multi-Asset - Summit Fund Blended Index (%)

14.24

11.22

15.87

7.41

7.81

Morningstar Category Avg. (%)

10.74

9.76

10.4

7.27

—

Morningstar Quartile

—

Morningstar Quartile # of Funds

—

409

404

387

—

YTD

Inception

Total Return (%)

16.09

13.97

56.98

69.52

111.74

Multi-Asset - Summit Fund Blended Index (%)

14.24

11.22

55.56

42.98

64.09

YTD

Inception

Total Return (%)

16.09

13.97

56.98

69.52

111.74

Multi-Asset - Summit Fund Blended Index (%)

14.24

11.22

55.56

42.98

64.09

2020

2021

2022

2023

2024

Total Return (%)

27.78

14.64

-9.78

12.86

11.41

Multi-Asset - Summit Fund Blended Index (%)

14.05

8.78

-17.33

15.43

9.49

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 Allocation--30% to 50% Equity 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 2025)

Gross Expense Ratio (%)

1.17

Net Expense Ratio (%)

0.71

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

            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

Hypothetical Growth of $10,000

(As of 30 Sep 2025)

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

                        Categories,I Shares,Multi-Asset - Summit Fund Blended Index
                        2024-09-30,10000,10000
2024-10-31,9785,9731
2024-11-30,9945,9963
2024-12-31,9818,9736
2025-01-31,10100,9954
2025-02-28,10100,9975
2025-03-31,9880,9763
2025-04-30,9934,9933
2025-05-31,10301,10261
2025-06-30,10685,10615
2025-07-31,10870,10639
2025-08-31,11195,10858
2025-09-30,11397,11122

                        Categories,I Shares,Multi-Asset - Summit Fund Blended Index
                        2022-09-30,10000,10000
2022-10-31,10272,10335
2022-11-30,10941,11010
2022-12-31,10755,10774
2023-01-31,11302,11379
2023-02-28,10999,11032
2023-03-31,11240,11375
2023-04-30,11397,11494
2023-05-31,11299,11330
2023-06-30,11563,11724
2023-07-31,11792,12014
2023-08-31,11633,11747
2023-09-30,11266,11318
2023-10-31,11037,11060
2023-11-30,11705,11896
2023-12-31,12137,12436
2024-01-31,12278,12411
2024-02-29,12478,12669
2024-03-31,12791,12935
2024-04-30,12518,12548
2024-05-31,12891,12920
2024-06-30,13197,13100
2024-07-31,13309,13372
2024-08-31,13533,13702
2024-09-30,13774,13986
2024-10-31,13477,13610
2024-11-30,13698,13934
2024-12-31,13523,13617
2025-01-31,13912,13922
2025-02-28,13912,13951
2025-03-31,13609,13655
2025-04-30,13682,13892
2025-05-31,14189,14351
2025-06-30,14717,14847
2025-07-31,14973,14879
2025-08-31,15419,15186
2025-09-30,15698,15556

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

            Ex-Date, Payable Date,Total ($),Income ($),ST Cap Gains ($),LT Cap Gains ($)
2019-03-31,1553990400,0,0,0,0
2019-06-21,1561852800,0.05120,0.05120,0,0
2019-09-20,1569801600,0.02375,0.02375,0,0
2019-11-14,1573689600,0.04852,0,0.04852,0.00000
2019-12-20,1577750400,0.06778,0.06778,0,0
2020-03-19,1585612800,0.06534,0.06534,0,0
2020-06-30,1593475200,0,0,0,0
2020-09-30,1601424000,0,0,0,0
2020-11-19,1605744000,0.58471,0,0.47739,0.10732
2020-12-17,1609372800,0.01594,0.01594,0,0
2021-03-18,1617148800,0.20265,0.20265,0,0
2021-06-30,1625011200,0,0,0,0
2021-09-30,1632960000,0,0,0,0
2021-11-18,1637193600,2.16796,0,1.77863,0.38933
2021-12-16,1640908800,0.03483,0.03483,0,0
2022-03-17,1648684800,0.06401,0.06401,0,0
2022-06-16,1656547200,0.07110,0.07110,0,0
2022-09-15,1664496000,0.07327,0.07327,0,0
2022-12-15,1672444800,0.07852,0.07852,0,0
2023-03-16,1680220800,0.05540,0.05540,0,0
2023-06-15,1688083200,0.15036,0.15036,0,0
2023-09-14,1696032000,0.03206,0.03206,0,0
2023-12-14,1703980800,0.06310,0.06310,0,0
2024-03-14,1711843200,0.07121,0.07121,0,0
2024-06-20,1719705600,0.11328,0.11328,0,0
2024-09-19,1727654400,0.07709,0.07709,0,0
2024-11-21,1732147200,0.29065,0,0.02494,0.26571
2024-12-19,1735603200,0.07222,0.07222,0,0
2025-03-20,1743379200,0.04250,0.04250,0,0
2025-06-17,1751241600,0.10861,0.10861,0,0
2025-09-18,1759190400,0.07240,0.07240,0,0

Distributions

(As of 18 Sep 2025)

Ex-Date

Payable Date

Total ($)

Income ($)

ST Cap Gains ($)

LT Cap Gains ($)

31 Mar 2019

—

21 Jun 2019

30 Jun 2019

0.05120

—

20 Sep 2019

30 Sep 2019

0.02375

—

14 Nov 2019

0.04852

—

0.04852

0.00000

20 Dec 2019

31 Dec 2019

0.06778

—

19 Mar 2020

31 Mar 2020

0.06534

—

30 Jun 2020

—

30 Sep 2020

—

19 Nov 2020

0.58471

—

0.47739

0.10732

17 Dec 2020

31 Dec 2020

0.01594

—

18 Mar 2021

31 Mar 2021

0.20265

—

30 Jun 2021

—

30 Sep 2021

—

18 Nov 2021

2.16796

—

1.77863

0.38933

16 Dec 2021

31 Dec 2021

0.03483

—

17 Mar 2022

31 Mar 2022

0.06401

—

16 Jun 2022

30 Jun 2022

0.07110

—

15 Sep 2022

30 Sep 2022

0.07327

—

15 Dec 2022

31 Dec 2022

0.07852

—

16 Mar 2023

31 Mar 2023

0.05540

—

15 Jun 2023

30 Jun 2023

0.15036

—

14 Sep 2023

30 Sep 2023

0.03206

—

14 Dec 2023

31 Dec 2023

0.06310

—

14 Mar 2024

31 Mar 2024

0.07121

—

20 Jun 2024

30 Jun 2024

0.11328

—

19 Sep 2024

30 Sep 2024

0.07709

—

21 Nov 2024

0.29065

—

0.02494

0.26571

19 Dec 2024

31 Dec 2024

0.07222

—

20 Mar 2025

31 Mar 2025

0.04250

—

17 Jun 2025

30 Jun 2025

0.10861

—

18 Sep 2025

30 Sep 2025

0.07240

—

Fund Facts

(As of 31 Aug 2025)

Net Fund Assets

$97.2 M

Benchmark

Multi-Asset - Summit Fund Blended Index

Morningstar Category

Allocation--30% to 50% Equity

Fund Symbol

TSUMX

Share Class

Share Class Inception Date

1 Mar 2019

Distribution Frequency

Quarterly

30-Day SEC Yield (Subsidized)

2.05%

30-Day SEC Yield (Unsubsidized)

1.38%

Characteristics

Portfolio

(As of 31 Aug 2025)

Portfolio

Benchmark

Number of Holdings

187

—

Weighted Average Market Cap

$691.9 B

$830.6 B

Median Market Cap

$140.8 B

$16.8 B

Annual Portfolio Turnover

67%

—

Price to Earnings - Forward 1YR

18.7x

20.5x

Price to Earnings - Trailing 12 Months

20.1x

23.3x

Price to Cash Flow

9.6x

13.9x

Portfolio

Benchmark

Price to Book Value

2.7x

3.4x

Historical 3YR Sales Growth

18.0%

16.9%

Active Share

77.0%

—

Effective Duration

5.5 Yrs

6.4 Yrs

Average Effective Maturity

6.9 Yrs

8.2 Yrs

Weighted Average Coupon

3.8%

2.9%

Yield to Worst

5.8%

3.5%

Risk & Return Profile

(As of 31 Aug 2025)

Annualized Alpha (%)

2.91

4.79

Beta

0.84

0.85

R-Squared (%)

94.74

86.83

Standard Deviation (%)

9.40

10.36

Sharpe Ratio

0.87

0.72

Information Ratio

0.44

0.98

Up Capture (%)

92.13

102.64

Down Capture (%)

74.94

75.87

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 2025)

Name

Ticker/Symbol

Sector

Weight %

Zegona Communications plc

ZEG

Communication Services

3.4

Amazon.com, Inc.

AMZN

Consumer Discretionary

2.6

Meta Platforms, Inc.

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…

Learn More

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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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

Evaluating the Impact of Active Management, International Investing, and Dividends

Active Management, International Investing, and Dividends

Investor Viewpoint: Corporate Earnings and Tariff Impacts

Retirement Resources: Building a Cash Flow Reserve Ladder

Thornburg Investment Insights: Corporate Earnings and Tariff Impacts

FOMC Update: Rates Lowered for the First Time Since 2024

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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

Evaluating the Impact of Active Management, International Investing, and Dividends

Active Management, International Investing, and Dividends

Investor Viewpoint: Corporate Earnings and Tariff Impacts

Retirement Resources: Building a Cash Flow Reserve Ladder

Thornburg Investment Insights: Corporate Earnings and Tariff Impacts

FOMC Update: Rates Lowered for the First Time Since 2024