Sixth Street Specialty Lending, Inc. (TSLX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

94,208,287Shares Outstanding

6,101,066Shares held by institutions

$115,188,126Value of institutional holdings

51.48%Institutional ownership %

10.14%Shares Changed QoQ

241No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

A total of 241 institutions have reported a stake in Sixth Street Specialty Lending, Inc. (NYSE:TSLX) as of December 2025, according to recent 13F filings with the SEC.

The percentage of Sixth Street Specialty Lending owned by institutions changed from 51.8% in September 2025 to 51.5% in December 2025, marking a slight down trend.
On a quarter-over-quarter basis, institutional holdings shifted by 10.14%, with a year-over-year an increase of 9.05% in the count of filers.
Of these 241 institutional investors, 130 increased their holdings in Sixth Street Specialty Lending, while 61 of them reduced positions, and 50 investors maintained their exposure.
This class of investors increased its holdings in Sixth Street Specialty Lending to 48.50Mn shares for the 13F-cycle ending December 2025, up by 4.47Mn shares quarter on quarter, and up 3.33Mn shares year over year.
Sixth Street Partners Management Company, L.P.'s holding of 2.71Mn shares as of December 31, 2025 makes it the primary institutional investor in Sixth Street Specialty Lending, owning 2.88% of the stock.
Among the most significant buyers of Sixth Street Specialty Lending during December 2025 were BANK OF MONTREAL /CAN/ (1.85Mn), MORGAN STANLEY (386.59K), GOLDMAN SACHS GROUP INC (319.67K), Altshuler Shaham Ltd (301.46K), UBS Group AG (299.56K).
Leading sellers of Sixth Street Specialty Lending stock in December 2025 included TWO SIGMA ADVISERS, LP (262.99K), VAN ECK ASSOCIATES CORP (187.14K), LSV ASSET MANAGEMENT (181.50K), TWO SIGMA INVESTMENTS, LP (176.84K), ROYAL BANK OF CANADA (130.56K).
The top 10 institutional holders of Sixth Street Specialty Lending for the quarter ending December 2025 included Sixth Street Partners Management Company, L.P. (2.71Mn), Sound Income Strategies, LLC (2.51Mn), Progeny 3, Inc. (2.48Mn), MORGAN STANLEY (2.39Mn), VAN ECK ASSOCIATES CORP (2.34Mn), BANK OF MONTREAL /CAN/ (2.28Mn), STRS OHIO (2.15Mn), UBS Group AG (1.62Mn), Allen Investment Management, LLC (1.56Mn), ARES MANAGEMENT LLC (1.35Mn).

241 Institutional Holders

6,101,066 Total Shares Held

Rows:

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Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Sixth Street Partners Management Company, L.P.	31 Dec, 2025	2,714,226	0	0.00%	$58,952,989.00
Sound Income Strategies, LLC	31 Dec, 2025	2,511,115	108,708	4.52%	$55,997,871.00
Progeny 3, Inc.	31 Dec, 2025	2,476,398	0	0.00%	$53,787,365.00
MORGAN STANLEY	31 Dec, 2025	2,390,628	386,591	19.29%	$51,924,458.00
VAN ECK ASSOCIATES CORP	31 Dec, 2025	2,342,047	-187,140	-7.40%	$50,870.00
BANK OF MONTREAL /CAN/	31 Dec, 2025	2,284,920	1,845,088	419.50%	$49,628,462.00
STRS OHIO	31 Dec, 2025	2,154,159	49,986	2.38%	$46,788,333.00
UBS Group AG	31 Dec, 2025	1,616,161	299,564	22.75%	$35,103,017.00
Allen Investment Management, LLC	31 Dec, 2025	1,560,247	1,580	0.10%	$33,888,565.00
ARES MANAGEMENT LLC	31 Dec, 2025	1,354,779	-40,000	-2.87%	$29,425,800.00
WELLS FARGO & COMPANY/MN	31 Dec, 2025	1,270,816	45,870	3.74%	$27,602,133.00
Callodine Capital Management, LP	31 Dec, 2025	1,101,992	230,559	26.46%	$23,935,266.00
Muzinich & Co., Inc.	31 Dec, 2025	992,898	245,940	32.93%	$21,565,765.00
JPMORGAN CHASE & CO	31 Dec, 2025	934,233	-59,502	-5.99%	$20,291,541.00
BlackRock, Inc.	31 Dec, 2025	808,428	-3,002	-0.37%	$17,559,053.00
LSV ASSET MANAGEMENT	31 Dec, 2025	791,212	-181,500	-18.66%	$17,185.00
Advisors Capital Management, LLC	31 Dec, 2025	767,489	20,763	2.78%	$16,669,882.00
BANK OF AMERICA CORP /DE/	31 Dec, 2025	752,631	60,344	8.72%	$16,347,136.00
Sumitomo Mitsui Trust Group, Inc.	31 Dec, 2025	741,125	78,229	11.80%	$16,097,235.00
LPL Financial LLC	31 Dec, 2025	693,805	31,892	4.82%	$15,069,450.00

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