TSUMX Mutual Fund

NAV$15.99

AUM$110M

TER0.70%

Holdings211

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TSUMX Mutual Fund

NAV$15.99

Thornburg Summit Fund Class I

AUM$110M

TER0.70%

Holdings211

See how much of TSUMX you already own

Just $25 once·$69/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 200 holdings · as of Mar 31, 2026

TSUMX holdings, by weight
#	Ticker	Name	Weight	Cumulative	Shares	Mkt value	Share chg	Sector	Industry
1	ZEG	Zegona Communications Plc	3.72%	3.7%	178,678	$3.93M	-	-	-
2	—	Samsung Electronics (Equity)	3.19%	6.9%	28,829	$3.37M	-	-	-
3	—	Tsmc	2.94%	9.8%	53,792	$3.11M	-	-	-
4	Debt	Us Treasury N/B 11/35 4	2.59%	12.4%	-	$2.74M	-	-	-
5	ORAN	Orange S.A.	2.32%	14.8%	119,713	$2.45M	-	-	-
6	C	Citigroup Inc.Financials · Banks	2.13%	16.9%	19,869	$2.25M	-	Financials	Banks
7	AMZN	Amazon.com Inc	2.12%	19.0%	10,748	$2.24M	-	-	-
8	SHEL	Shell PlcEnergy · Oil & Gas	1.94%	21.0%	43,754	$2.05M	+1.5K	Energy	Oil & Gas
9	—	Colliers International Group, Inc.Real Estate · Real Estate Management	1.89%	22.8%	18,651	$1.99M	+11.2K	Real Estate	Real Estate Management
10	—	Alphabet IncComm. Services · Interactive Media	1.79%	24.6%	6,581	$1.89M	-	Comm. Services	Interactive Media
11	—	Roche Holding Ag	1.70%	26.3%	4,494	$1.79M	-	-	-
12	META	Meta Platforms, Inc.Comm. Services · Interactive Media	1.64%	28.0%	3,031	$1.73M	-	Comm. Services	Interactive Media
13	—	Liberty Oilfield Services, Inc.Energy · Energy Equipment	1.64%	29.6%	60,352	$1.74M	-	Energy	Energy Equipment
14	Debt	U.s. Treasury BondFinancials · Diversified Financial Services	1.63%	31.2%	-	$1.73M	-	Financials	Diversified Financial Services
15	SLB	Schlumberger Nv.Energy · Energy Equipment	1.61%	32.9%	33,154	$1.70M	-2.3K	Energy	Energy Equipment
16	T	AT&T Inc.Comm. Services · Diversified Telecom	1.50%	34.4%	54,682	$1.59M	-	Comm. Services	Diversified Telecom
17	Debt	United States Treasury Strip Coupon	1.49%	35.8%	-	$1.57M	-	-	-
18	NVDA	Nvidia Corp.Info Tech · Semiconductors	1.42%	37.3%	8,627	$1.50M	-	Info Tech	Semiconductors
19	BNPP	Bnp Paribas	1.37%	38.6%	15,194	$1.45M	-	-	-
20	MDT	Medtronic Plc Ordinary SharesHealth Care · Healthcare Equip.	1.35%	40.0%	16,516	$1.43M	+4.7K	Health Care	Healthcare Equip.
21	CSU	Constellation Software Inc/CanadaInfo Tech · Software	1.29%	41.3%	776	$1.36M	+366	Info Tech	Software
22	—	Canadian Pac Kans City Ltd NpvIndustrials · Road & Rail	1.26%	42.5%	16,986	$1.34M	-	Industrials	Road & Rail
23	—	Thornburg Capital Management Fund	1.26%	43.8%	133,077	$1.33M	-	-	-
24	—	AstraZeneca PLC	1.25%	45.0%	6,780	$1.33M	-	-	-
25	ROKOB	Roko Ab	1.25%	46.3%	8,117	$1.32M	-	-	-
26	V	Visa Inc Class AInfo Tech · IT Services	1.19%	47.5%	4,166	$1.26M	-	Info Tech	IT Services
27	LMN	Lumine Group IncInfo Tech · IT Services	1.19%	48.7%	78,906	$1.26M	+39.1K	Info Tech	IT Services
28	AVGO	Broadcom IncInfo Tech · Semiconductors	1.14%	49.8%	3,894	$1.21M	-	Info Tech	Semiconductors
29	CME	Cme Group, Cl AFinancials · Capital Markets	1.14%	50.9%	4,088	$1.21M	-	Financials	Capital Markets
30	FP	Total Se	1.05%	52.0%	12,107	$1.11M	-	-	-
31	MA	Mastercard IncFinancials · Capital Markets	1.05%	53.0%	2,211	$1.10M	-	Financials	Capital Markets
32	MSFT	Microsoft CorpInfo Tech · Software	1.02%	54.1%	2,909	$1.08M	-	Info Tech	Software
33	Debt	Us Treasury N/BFinancials · Banks	1.02%	55.1%	-	$1.08M	-	Financials	Banks
34	—	Tenaris Sa Sponsored Adr (1 Ads : 2 Ordinary)Materials · Metals & Mining	0.92%	56.0%	16,792	$977.0K	-	Materials	Metals & Mining
35	—	Schwab Strategic TFinancials · Capital Markets	0.92%	56.9%	10,362	$973.8K	-	Financials	Capital Markets
36	Debt	Treasury (Cpi) Note 1.88% Jan 15, 2036	0.91%	57.8%	-	$963.2K	-	-	-
37	GLEN	Glencore PlcMaterials · Metals & Mining	0.90%	58.7%	125,911	$953.6K	-23.5K	Materials	Metals & Mining
38	—	Open Text CorpInfo Tech · Software	0.90%	59.6%	42,633	$950.1K	+2.3K	Info Tech	Software
39	—	Galaxy Entertainment Group Limited Shs	0.88%	60.5%	205,000	$926.6K	-	-	-
40	LHX	L3Harris Technologies Inc.Industrials · Aerospace & Defense	0.77%	61.3%	2,371	$818.4K	-	Industrials	Aerospace & Defense
41	—	Freddie Mac Pool	0.77%	62.1%	-	$810.5K	-	-	-
42	MELI	Mercadolibre IncInfo Tech · IT Services	0.73%	62.8%	445	$769.4K	-	Info Tech	IT Services
43	—	Round One Corp	0.71%	63.5%	143,400	$754.1K	-	-	-
44	—	Shopify Inc.Info Tech · Software	0.68%	64.2%	6,024	$714.6K	-310	Info Tech	Software
45	ZTS	Zoetis Inc, Class AHealth Care · Pharmaceuticals	0.65%	64.8%	5,816	$687.5K	-	Health Care	Pharmaceuticals
46	—	Icon Plc -	0.63%	65.5%	6,010	$665.1K	-	-	-
47	BLDR	Builders Firstsource IncIndustrials · Building Products	0.62%	66.1%	7,947	$654.3K	-	Industrials	Building Products
48	—	ASML Holding NVInfo Tech · Semiconductors	0.61%	66.7%	485	$644.9K	-	Info Tech	Semiconductors
49	—	Itochu Corp	0.60%	67.3%	50,000	$636.0K	-	-	-
50	MRK	Merck & Company IncHealth Care · Pharmaceuticals	0.60%	67.9%	5,273	$634.3K	-	Health Care	Pharmaceuticals
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TSUMX Mutual Fund All Holdings

TSUMX holdings total 211 positions. The top 10 holdings account for 24.6% of the fund, led by Zegona Communications Plc at 3.7%, Samsung Electronics (Equity) at 3.2%, Tsmc at 2.9%.

TSUMX portfolio concentration is well-diversified, with the top 10 representing 24.6% of total assets. The largest sector exposure is Financials at 15.5%.

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