TSUMX Mutual Fund

NAV$15.53

AUM$106M

TER0.70%

Holdings232

See how much of TSUMX you already own

Just $25 once·$99/mo·Download sample

X-ray my portfolio free

TSUMX Mutual Fund

NAV$15.53

Thornburg Summit Fund Class I

AUM$106M

TER0.70%

Holdings232

See how much of TSUMX you already own

Just $25 once·$99/mo·Download sample

X-ray my portfolio free

Overview Performance Chart Dividends Top Holdings All Holdings Sectors Geography Similar Compare Overlap

Showing top 50 of 230 holdings · as of Aug 31, 2026

TSUMX holdings, by weight
#	Ticker	Name	Weight	Cumulative	Shares	Mkt value	Sector	Industry
1	—	Thornburg Capital Management Fund	6.01%	6.0%	756,563	$7.57M	-	-
2	—	Samsung Electronics (Equity)	3.29%	9.3%	21,805	$4.14M	-	-
3	—	Tsmc	3.24%	12.5%	53,792	$4.08M	-	-
4	LMN	Lumine Group IncInfo Tech · IT Services	2.63%	15.2%	186,662	$3.32M	Info Tech	IT Services
5	ZEG	Zegona Communications Plc	2.61%	17.8%	149,975	$3.29M	-	-
6	—	Colliers International Group, Inc.Real Estate · Real Estate Management	2.48%	20.3%	31,078	$3.12M	Real Estate	Real Estate Management
7	AMZN	Amazon.com IncConsumer Disc. · Internet	2.17%	22.4%	10,535	$2.74M	Consumer Disc.	Internet
8	Debt	Us Treasury N/B	2.11%	24.5%	2,780,000	$2.65M	-	-
9	C	Citigroup Inc.Financials · Banks	1.83%	26.4%	17,537	$2.31M	Financials	Banks
10	ROKOB	Roko Ab	1.75%	28.1%	11,195	$2.21M	-	-
11	GOOGL	Alphabet IncComm. Services · Interactive Media	1.73%	29.8%	6,433	$2.18M	Comm. Services	Interactive Media
12	ORAN	Orange Sa (France)	1.70%	31.5%	119,713	$2.14M	-	-
13	SHEL	Shell PlcEnergy · Oil & Gas	1.64%	33.2%	45,162	$2.06M	Energy	Oil & Gas
14	SLB	Schlumberger Nv.Energy · Energy Equipment	1.54%	34.7%	32,297	$1.94M	Energy	Energy Equipment
15	Debt	United States Department Of The Treasury	1.51%	36.2%	2,049,000	$1.90M	-	-
16	—	Liberty Oilfield Services, Inc.Energy · Energy Equipment	1.49%	37.7%	95,260	$1.88M	Energy	Energy Equipment
17	CSU	Constellation Software Inc/CanadaInfo Tech · Software	1.44%	39.2%	803	$1.82M	Info Tech	Software
18	MDT	Medtronic Plc Ordinary SharesHealth Care · Healthcare Equip.	1.39%	40.6%	19,357	$1.75M	Health Care	Healthcare Equip.
19	NVDA	Nvidia CorpInfo Tech · Semiconductors	1.38%	41.9%	7,843	$1.73M	Info Tech	Semiconductors
20	META	Meta Platforms IncComm. Services · Interactive Media	1.38%	43.3%	3,031	$1.73M	Comm. Services	Interactive Media
21	RO	Roche Holding Ag	1.34%	44.7%	3,859	$1.68M	-	-
22	Debt	Treasury BondFinancials · Diversified Financial Services	1.32%	46.0%	2,445,000	$1.66M	Financials	Diversified Financial Services
23	BNPP	Bnp Paribas	1.32%	47.3%	13,866	$1.66M	-	-
24	V	Visa Inc Class AInfo Tech · IT Services	1.26%	48.6%	4,166	$1.58M	Info Tech	IT Services
25	Debt	United States Treasury Strip Coupon	1.21%	49.8%	3,900,000	$1.52M	-	-
26	MSFT	Microsoft CorpInfo Tech · Software	1.17%	50.9%	2,909	$1.48M	Info Tech	Software
27	T	AT&T Inc.Comm. Services · Diversified Telecom	1.12%	52.1%	54,682	$1.42M	Comm. Services	Diversified Telecom
28	AVGO	Broadcom IncInfo Tech · Semiconductors	1.11%	53.2%	3,760	$1.39M	Info Tech	Semiconductors
29	MA	Mastercard IncFinancials · Capital Markets	1.04%	54.2%	2,211	$1.30M	Financials	Capital Markets
30	CME	Cme Group Inc.Financials · Capital Markets	0.98%	55.2%	4,318	$1.23M	Financials	Capital Markets
31	—	Round One Corp	0.96%	56.1%	143,400	$1.21M	-	-
32	—	Canadian Pac Kans City Ltd NpvIndustrials · Road & Rail	0.93%	57.1%	12,589	$1.17M	Industrials	Road & Rail
33	—	Schwab Strategic TFinancials · Capital Markets	0.90%	58.0%	10,362	$1.14M	Financials	Capital Markets
34	—	AstraZeneca PLC	0.87%	58.8%	6,780	$1.09M	-	-
35	—	Open Text CorpInfo Tech · Software	0.85%	59.7%	42,633	$1.06M	Info Tech	Software
36	—	Total Fina Elf Holdings Usa, Inc.	0.84%	60.5%	12,107	$1.06M	-	-
37	GLEN	Glencore PlcMaterials · Metals & Mining	0.80%	61.3%	125,911	$1.00M	Materials	Metals & Mining
38	CCCS	Ccc Intelligent Solutions HoldInfo Tech · Software	0.79%	62.1%	133,190	$993.6K	Info Tech	Software
39	—	Keyence Corp Jpy50	0.72%	62.8%	1,719	$900.2K	-	-
40	—	Shopify IncInfo Tech · Software	0.71%	63.6%	6,024	$887.8K	Info Tech	Software
41	—	Icon Plc -	0.71%	64.3%	5,397	$890.5K	-	-
42	—	Galaxy Entertainment Group Limited Shs	0.71%	65.0%	205,000	$893.4K	-	-
43	MELI	Mercadolibre IncInfo Tech · IT Services	0.68%	65.7%	445	$861.6K	Info Tech	IT Services
44	—	Tenaris S.A.Materials · Metals & Mining	0.63%	66.3%	14,109	$788.3K	Materials	Metals & Mining
45	TEP	Tele Performance Se	0.62%	66.9%	9,684	$784.0K	-	-
46	MRK	Merck & Company IncHealth Care · Pharmaceuticals	0.62%	67.5%	5,273	$779.1K	Health Care	Pharmaceuticals
47	—	Freddie Mac Pool	0.60%	68.1%	924,309	$760.4K	-	-
48	NOW	Servicenow, Inc.Info Tech · Software	0.57%	68.7%	4,835	$715.5K	Info Tech	Software
49	—	ASML Holding NVInfo Tech · Semiconductors	0.56%	69.3%	418	$704.9K	Info Tech	Semiconductors
50	Debt	Us Treasury N/B 2033-11-15Financials · Banks	0.52%	69.8%	665,000	$659.9K	Financials	Banks
More holdings · Pro

Not reported for this fund: share changes.

FundXLS Pro

See the other 180 holdings of TSUMX

X-ray every fund you own at once, ETFs and mutual funds that hold stocks directly, and see how much of your money lands on the same stocks twice.

Unlock FundXLS Pro$45/quarter Pro · Cancel anytime

TSUMX Mutual Fund All Holdings

TSUMX holdings total 232 positions. The top 10 holdings account for 28.1% of the fund, led by Thornburg Capital Management Fund at 6.0%, Samsung Electronics (Equity) at 3.3%, Tsmc at 3.2%.

TSUMX portfolio concentration is well-diversified, with the top 10 representing 28.1% of total assets. The largest sector exposure is Financials at 15.1%.

TSUMX sectors provide a detailed breakdown. TSUMX overlap shows how holdings compare to other funds in your portfolio.