Security key
83012A109
Sixth Street Specialty Lending, Inc. - common stock (TSLX)
CUSIP: 83012A109
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / common stock
- Total 13F shares
- 52,019,001
- Total 13F value
- $955,280,051
- Share change
- +1,702,188
- Put/Call ratio
- 79%
- SEC-reported price per share
- $18.38
- Number of holders
- 259
- Value change
- +$19,680,351
- Number of buys
- 131
- Number of sells
- 110
- Shares outstanding
- 94,754,549
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
259
Top holders
10
TSLX full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2026
Sixth Street Specialty Lending, Inc. SEC filings
Sixth Street Specialty Lending, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 83012A109
Recent filing periods:
Ownership snapshot
Top reported holders of TSLX - Sixth Street Specialty Lending, Inc. - common stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Alan Waxman
Disclosed value leader
Alan Waxman
Comparable rows
0/15
Latest evidence
09 Mar 2026
3/4/5
13F
Highest disclosed value: $64,677,181
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
Alan Waxman has the largest disclosed position value at $64.68M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Alan Waxman's linked filing trail.
Disclosed position value
Top 5
Alan Waxman
$64.68M
Sixth Street Partners Management ...
$58.95M
Sound Income Strategies, LLC
$56M
Progeny 3, Inc.
$53.79M
MORGAN STANLEY
$51.92M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Alan Waxman |
3/4/5
Vice President
|
—
denominator unverified
|
$64,677,181
3,259,266 shares
|
+$9,997,150 | 09 Mar 2026 |
| Sixth Street Partners Management Company, L.P. |
13F
Company
|
—
denominator unverified
|
$58,952,989
2,714,226 shares
|
— | 31 Dec 2025 |
| Sound Income Strategies, LLC |
13F
Company
|
—
denominator unverified
|
$55,997,871
2,511,115 shares
|
— | 31 Dec 2025 |
| Progeny 3, Inc. |
13F
Company
|
—
denominator unverified
|
$53,787,365
2,476,398 shares
|
— | 31 Dec 2025 |
| MORGAN STANLEY |
13F
Company
|
—
denominator unverified
|
$51,924,458
2,390,628 shares
|
— | 31 Dec 2025 |
| VAN ECK ASSOCIATES CORP |
13F
Company
|
—
denominator unverified
|
$50,870,000
2,342,047 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
259
Shares
52,019,001
Rows available
259
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q1 2026 Across Filers
Q1 2026 holders
259
Q1 2026 holders
259
Holder diff
0
| Investor | Q1 2026 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend