Sixth Street Specialty Lending, Inc.
US ˙ NYSE ˙ US83012A1097

SecurityTSLX / Sixth Street Specialty Lending, Inc.
InstitutionPARK CIRCLE Co
Latest Disclosed Ownership40,145 shares
Latest Disclosed Value $ 737,865
PARK CIRCLE Co ownership in TSLX / Sixth Street Specialty Lending, Inc.

On May 14, 2026 - PARK CIRCLE Co filed a 13F-HR form disclosing ownership of 40,145 shares of Sixth Street Specialty Lending, Inc. (US:TSLX) valued at $737,865 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 40,145 shares of Sixth Street Specialty Lending, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $709,362 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 40,145 0 0.00 738 -15.38 0.6834
2026-02-13 2025-12-31 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 40,145 0 0.00 872 -5.02 0.7542
2025-11-07 2025-09-30 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 40,145 -21,855 -35.25 918 -37.87 0.7690
2025-07-23 2025-06-30 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 62,000 0 0.00 1,476 6.42 1.2523
2025-05-09 2025-03-31 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 62,000 0 0.00 1,388 5.08 1.2196
2025-02-13 2024-12-31 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 62,000 0 0.00 1,321 3.77 1.1769
2024-11-08 2024-09-30 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 62,000 0 0.00 1,273 -3.85 1.1160
2024-08-02 2024-06-30 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 62,000 0 0.00 1,324 -0.38 1.2647
2024-05-10 2024-03-31 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 62,000 0 0.00 1,329 -0.82 1.2171
2024-02-15 2023-12-31 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 62,000 0 0.00 1,339 5.68 1.2026
2023-11-07 2023-09-30 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 62,000 0 0.00 1,267 9.41 1.1877
2023-08-11 2023-06-30 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 62,000 0 0.00 1,159 2.12 1.0853
2023-05-10 2023-03-31 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 62,000 27,000 77.14 1,135 82.02 1.0955
2023-02-13 2022-12-31 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 35,000 0 0.00 623 8.92 0.5852
2022-11-08 2022-09-30 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 35,000 0 0.00 572 -11.73 0.5885
2022-08-05 2022-06-30 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 35,000 0 0.00 648 -20.49 0.5319
2022-05-11 2022-03-31 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 35,000 0 0.00 815 -0.49 0.6773
2022-02-11 2021-12-31 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 35,000 25,000 250.00 819 268.92 0.6461
2021-11-12 2021-09-30 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 10,000 0 0.00 222 0.00 0.1685
2021-08-10 2021-06-30 13F SIXTH STREET SPECIALITY LENDN COM 83012A109 10,000 10,000 222 0.1674
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.