Security Snapshot

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

CUSIP: 83012A109

13F Institutional Holders and Ownership History from Q2 2020 to Q2 2026

Latest Period

Q1 2026

Institutions Reporting

258

Shares (Excl. Options)

51,993,240

Price

$18.38

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Security type / class
Equity / common stock
Symbol
TSLX on NYSE
All holders as of 31 Mar 2026
Q1 2026
Total 13F shares
51,993,240
Latest holder snapshot 5 signals
Total 13F value
$954,806,562
Portfolio coverage rank
0%
Share change
+1,676,427
Value change
+$19,206,862
Number of holders
258
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
94,754,549
SEC-reported price per share
$17.17
Insider filing price
$17.17
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors

Key facts

  • TSLX - Sixth Street Specialty Lending, Inc. - common stock is tracked under CUSIP 83012A109.
  • 258 institutions reported positions in Q1 2026.
  • 1 significant owner is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 258 to 15 between Q1 2026 and Q2 2026.
  • SEC-reported value moved from $954,806,562 to $17,684,110.

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 258 institutions filings for Q1 2026.

Open SEC evidence

Security key

83012A109

Latest holder period

Q1 2026

13F holders

258

13D/G owners

1

CIK / CUSIP context first

Open Q1 2026 holders TSLX full holder history Sixth Street Specialty Lending, Inc. SEC filings Sixth Street Specialty Lending, Inc. company facts Sixth Street Specialty Lending, Inc. insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
1
Security
TSLX
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
STRS OHIO 5.1% $82,973,716 4,832,482 STRS OHIO 06 May 2026

As of 31 Mar 2026, 258 institutional investors reported holding 51,993,240 shares of Sixth Street Specialty Lending, Inc. - common stock (TSLX). This represents 55% of the company’s total 94,754,549 outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
37%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
STRS OHIO 4.6% 4,347,710 +102% 0.32% $79,910,918
Sixth Street Partners Management Company, L.P. 2.9% 2,714,226 0% 7% $49,887,474
Sound Income Strategies, LLC 2.7% 2,571,052 +2.4% 2.2% $46,561,752
Progeny 3, Inc. 2.6% 2,476,398 0% 2.4% $45,516,195
OMERS ADMINISTRATION Corp 2.1% 1,961,813 +318% 0.23% $36,058,123
UBS Group AG 2% 1,858,267 +15% 0.01% $34,154,947
VAN ECK ASSOCIATES CORP 1.9% 1,846,810 -21% 0.03% $33,944,000
Allen Investment Management, LLC 1.5% 1,395,961 -11% 0.32% $25,657,763
ARES MANAGEMENT LLC 1.4% 1,354,779 0% 1.6% $24,900,838
WELLS FARGO & COMPANY/MN 1.4% 1,338,623 +5.3% 0% $24,603,887
MORGAN STANLEY 1.4% 1,327,615 -44% 0% $24,401,567
Cerity Partners LLC 1.2% 1,135,996 +195% 0.03% $20,879,599
Callodine Capital Management, LP 1.2% 1,129,520 +2.5% 1.5% $20,760,578
Muzinich & Co., Inc. 1.1% 1,046,996 +5.4% 6.7% $19,243,804
RAYMOND JAMES FINANCIAL INC 0.97% 918,576 +2.5% 0.01% $16,883,438
LSV ASSET MANAGEMENT 0.83% 789,112 -0.27% 0.03% $14,504,000
Advisors Capital Management, LLC 0.83% 785,485 +2.3% 0.17% $14,437,217
Sumitomo Mitsui Trust Group, Inc. 0.81% 770,173 +3.9% 0.01% $14,155,780
STIFEL FINANCIAL CORP 0.79% 750,754 +20% 0.01% $13,798,884
BANK OF AMERICA CORP /DE/ 0.78% 735,726 -2.2% 0% $13,522,648
Legal & General Group Plc 0.77% 732,648 +10% 0% $13,473,397
TECTONIC ADVISORS LLC 0.77% 728,099 +18% 0.71% $13,382,451
LPL Financial LLC 0.71% 672,738 -3% 0% $12,364,928
SCS Capital Management LLC 0.7% 666,377 +2.5% 0.13% $12,248,013
JPMORGAN CHASE & CO 0.68% 641,445 -31% 0% $11,488,279

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
25
Latest
Q1 2026
Rows shown
1-25 of 25
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q2 1,029,790 $17,684,110 +$545,356 $17.17 15
2026 Q1 51,993,240 $954,806,562 +$19,206,862 $18.38 258
2025 Q4 50,333,115 $1,145,203,809 +$67,933,148 $21.72 258
2025 Q3 48,553,154 $1,174,654,487 -$5,264,110 $22.86 243
2025 Q2 48,778,754 $1,161,571,925 +$29,108,108 $23.81 241
2025 Q1 47,608,532 $1,065,386,349 +$55,235,914 $22.38 233
2024 Q4 45,158,134 $961,884,080 +$17,897,505 $21.30 220
2024 Q3 43,980,378 $903,037,680 +$1,420,918 $20.53 198
2024 Q2 44,980,422 $960,373,810 +$33,033,755 $21.35 222
2024 Q1 43,597,642 $934,302,029 +$57,010,703 $21.43 217
2023 Q4 41,099,304 $887,776,921 +$21,139,742 $21.60 220
2023 Q3 39,380,464 $804,773,517 +$45,308,690 $20.44 203
2023 Q2 37,644,601 $703,608,276 +$69,053,199 $18.69 200
2023 Q1 33,874,930 $619,754,974 -$39,816,290 $18.30 192
2022 Q4 36,046,461 $641,646,665 -$8,457,717 $17.80 190
2022 Q3 36,672,777 $600,721,810 +$19,733,190 $16.34 171
2022 Q2 35,384,480 $654,539,779 -$7,124,632 $18.50 178
2022 Q1 35,516,375 $827,149,945 -$22,120,308 $23.29 169
2021 Q4 36,555,154 $855,043,078 -$14,023,799 $23.39 165
2021 Q3 36,500,539 $810,750,438 +$2,224,021 $22.21 154
2021 Q2 36,401,067 $807,833,999 +$6,427,386 $22.19 154
2021 Q1 36,018,205 $757,985,350 -$16,881,742 $21.03 155
2020 Q4 36,614,389 $759,751,277 -$28,368,264 $20.75 143
2020 Q3 38,270,351 $658,584,716 +$17,045,035 $17.21 130
2020 Q2 37,406,831 $616,767,988 +$616,767,972 $16.49 128
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