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Sixth Street Specialty Lending (TSLX)

Sixth Street Specialty Lending on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on NYSE.

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3.9M

Short interest

settlement 2026-10-15

7.2

Days to cover

-2.2 days vs prior

54.2%

Short share of volume

2026-11-03

6,624

Fails to deliver

settlement 2026-10-14

Thu 11 Feb

Next earnings

estimated date

$0

Insider flow, 90 days

0 buys, 0 sells

As of 2026-11-03.

Short interest

FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSON

As of 15 October 2026, short interest in TSLX is 3,867,534 shares, down 1,157,948 shares over the last month. Over the last 48 readings it ranged from 727,990 shares (31 October 2024) to 8,266,031 shares (15 April 2026). At the reported average volume of 539K shares a day that is 7.2 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-10-153,867,534-12.4%538,9377.18
2026-09-304,416,619-12.1%472,3399.35
2026-09-155,025,482-3.1%366,78513.70
2026-08-315,185,788-1.5%415,54412.48
2026-08-145,263,064-16.1%533,0529.87
2026-07-316,275,265-6.3%447,64814.02
2026-07-156,694,373-7.2%569,86911.75
2026-06-307,210,878-1.5%915,1657.88
2026-06-157,321,791-4.0%707,80710.34
2026-05-297,628,031-1.9%576,12113.24
2026-05-157,772,079-4.7%1,020,8957.61
2026-04-308,154,514-1.4%577,85014.11
2026-04-158,266,031+0.7%609,68013.56
2026-03-318,210,869-0.3%974,0938.43
2026-03-138,236,876+25.9%1,676,7364.91
2026-02-276,540,916+37.6%1,796,4213.64
2026-02-134,751,785+38.8%1,122,1794.23
2026-01-303,422,833-0.9%372,1319.20
2026-01-153,453,867+12.2%371,5689.30
2025-12-313,077,564+6.9%488,2286.30
2025-12-152,879,168+1.0%463,8236.21
2025-11-282,851,929-4.0%414,6276.88
2025-11-142,970,349+7.0%556,8805.33
2025-10-312,776,884+16.5%505,1815.50
2025-10-152,383,652-8.8%719,1813.31
2025-09-302,615,215-12.9%504,3275.19
2025-09-153,001,025+4.2%340,3768.82
2025-08-292,879,650+10.2%372,2727.74
2025-08-152,614,263-1.8%398,3096.56
2025-07-312,661,176-7.3%440,2366.04
2025-07-152,871,417+3.4%495,9955.79
2025-06-302,777,879-23.7%762,4293.64
2025-06-133,638,594-3.2%366,7779.92
2025-05-303,757,921+58.2%487,3047.71
2025-05-152,375,628+26.0%489,8924.85
2025-04-301,884,906+33.0%400,3424.71
2025-04-151,416,999-14.3%802,3671.77
2025-03-311,653,522-3.3%388,5714.26
2025-03-141,709,944+27.5%512,9373.33
2025-02-281,341,399+17.5%649,1192.07
2025-02-141,141,673+7.7%334,5323.41
2025-01-311,060,031+5.7%273,8423.87
2025-01-151,003,072+6.4%281,2583.57
2024-12-31942,720+5.5%318,3552.96
2024-12-13893,884+5.3%291,5533.07
2024-11-29848,648-3.9%276,9403.06
2024-11-15883,044+21.3%476,6671.85
2024-10-31727,990+0.0%255,1372.85

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 3 November 2026, the short share of TSLX volume is 54.2%, up 19.2 points over the last five sessions. Over the last 30 readings it ranged from 19.8% (28 October 2026) to 70.6% (1 October 2026). The latest reading is 5.8 points above the 30-session average of 48.3%, on 208K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-11-03113K208K54.2%2,200
2026-11-02179K449K39.9%5
2026-10-30132K251K52.3%477
2026-10-29155K298K52.0%0
2026-10-2848K241K19.8%3,951
2026-10-2752K149K34.9%3
2026-10-2694K252K37.3%223
2026-10-2361K158K38.5%130
2026-10-2262K213K29.1%1,250
2026-10-2185K146K58.3%0
2026-10-2070K193K36.2%1,200
2026-10-19107K236K45.2%0
2026-10-16136K463K29.4%15,175
2026-10-1566K157K42.0%0
2026-10-14128K268K47.7%0
2026-10-13150K284K52.9%3,909
2026-10-1285K195K43.8%113
2026-10-0993K397K23.5%822
2026-10-08134K216K62.0%2,947
2026-10-0775K221K33.8%526
2026-10-06131K246K53.1%1,516
2026-10-05106K247K42.8%3,363
2026-10-02191K274K69.5%430
2026-10-01242K343K70.6%2
2026-09-30134K197K68.1%1,042
2026-09-29149K251K59.4%1,400
2026-09-2871K110K64.9%0
2026-09-2597K143K67.4%8,538
2026-09-24134K202K66.4%3,027
2026-09-23127K231K55.1%1,500

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 14 October 2026, the fails-to-deliver balance in TSLX is 6,624 shares, down 18,679 shares over the last settlement date. Over the last 30 readings it ranged from 11 shares (31 August 2026) to 63,586 shares (15 September 2026).

SettlementShares failedPriceValue
2026-10-146,624$17.12$113K
2026-10-0925,303$17.57$445K
2026-10-06298$17.59$5K
2026-10-0513,187$18.01$237K
2026-10-01250$18.02$5K
2026-09-3013,868$18.34$254K
2026-09-294,729$18.11$86K
2026-09-255,264$18.15$96K
2026-09-2411,592$18.25$212K
2026-09-236,253$18.35$115K
2026-09-227,428$18.04$134K
2026-09-2113,440$17.90$241K
2026-09-187,359$18.19$134K
2026-09-177,935$17.96$143K
2026-09-1648,899$17.86$873K
2026-09-1563,586$18.25$1.2M
2026-09-149,420$17.89$169K
2026-09-11172$17.78$3K
2026-09-104,044$17.85$72K
2026-09-092,950$18.04$53K
2026-09-085,296$18.38$97K
2026-09-043,430$18.31$63K
2026-09-0322$18.20$400
2026-09-023,879$18.45$72K
2026-09-0121,174$18.86$399K
2026-08-3111$18.74$206
2026-08-286,756$18.75$127K
2026-08-264,998$18.98$95K
2026-08-241,401$18.79$26K
2026-08-2125,783$18.77$484K

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for TSLX in the last 90 days. The most recent filings are listed below. Latest filing: Stanley Robert J. (CEO) on 2026-05-28.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-05-28Stanley Robert J.CEOOther transaction20Kprice not stated in the filingnot stated24K
2026-05-11Bruck Ross AnthonyVice PresidentBuy8K$17.76$142K18K
2026-03-10Waxman AlanVice PresidentBuy45K$18.47$831K545K
2026-03-09Waxman AlanVice PresidentBuy200K$18.18$3.6M500K
2026-03-06Waxman AlanVice PresidentBuy200K$18.42$3.7M300K
2026-03-06Covington P EmeryDirectorBuy8K$18.35$138K15K
2026-03-05Waxman AlanVice PresidentBuy100K$18.46$1.8M100K
2026-03-02Peck JoshuaVice PresidentBuy3K$17.59$50K3K
2026-03-02Stiepleman DavidVice PresidentBuy20K$17.65$357K26K
2026-02-27Pluss StevenVice PresidentBuy15K$17.72$266K52K
2026-02-26Graf MichaelSee RemarksBuy1K$18.26$18K7K
2025-11-18Stanley Robert J.Co-CEOBuy10K$20.85$209K25K
2024-11-20Graf MichaelSee RemarksBuy1K$20.53$21K6K
2024-08-07Graf MichaelSee RemarksBuy500$20.45$10K5K
2024-08-05Slotkin Judy SDirectorBuy7K$19.90$140K19K
2024-05-21Covington P EmeryDirectorBuy8K$21.50$161K8K
2023-03-13Doddy HurleyDirectorBuy3K$17.51$51K15K
2023-03-10Graf MichaelSee Remarks (1)Buy2K$17.55$26K4K
2023-03-09Graf MichaelSee Remarks (1)Buy2K$18.55$37K2K
2022-08-18Brett AntonChief Compliance OfficerBuy500$19.25$10K500
2022-08-08Pluss StevenVice PresidentBuy10K$19.04$190K37K
2022-08-05Simmonds IanChief Financial OfficerBuy500$18.89$9K5K
2022-05-24Gordon JenniferVice PresidentBuy3K$19.91$50K3K
2022-05-09Simmonds IanChief Financial OfficerBuy500$20.99$10K4K
2022-03-08Slotkin Judy SDirectorBuy850$23.13$20K8K
2022-03-07HIGGINBOTHAM RICHARD ADirectorBuy2K$22.82$46K4K
2021-05-11HIGGINBOTHAM RICHARD ADirectorBuy5K$21.88$109K5K
2021-03-09Easterly JoshuaChief Executive OfficerBuy8K$21.55$180K19K
2021-02-26Easterly JoshuaChief Executive OfficerBuy686$21.34$15K10K
2021-02-25Ross JohnDirectorBuy4K$21.72$87K35K
2021-02-23Ross JohnDirectorBuy1K$21.38$21K31K
2020-08-25Doddy HurleyDirectorBuy2K$17.81$27K4K
2020-08-11Slotkin Judy SDirectorBuy8K$18.46$138K8K
2020-08-10Ross JohnDirectorBuy3K$18.60$61K30K
2020-07-29Doddy HurleyDirectorBuy2K$17.05$34K2K
2020-04-23Doddy HurleyDirectorBuy500$15.00$8K9K
2020-03-12Burke Kenneth JosephChief Compliance OfficerBuy1K$17.31$17K3K
2020-03-12Pluss StevenVice PresidentBuy15K$17.37$261K27K
2020-03-12Doddy HurleyDirectorBuy250$16.13$4K8K
2020-03-11Ross JohnDirectorBuy1K$19.22$22K27K
2020-03-10Ross JohnDirectorBuy3K$19.57$56K26K
2020-03-02Stanley Robert J.PresidentBuy11K$21.53$237K15K

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

1 holder reports 5% or more of TSLX in its latest filing, on Schedule 13G (passive). The holder is STRS OHIO at 6.3% of the class (0 shares), filed 2026-08-14 for an event on 2026-06-30.

FiledFormHolderSharesOf classEvent
2026-08-1413G/Ano. 1STRS OHIOemployee benefit plan06.3%2026-06-30

13F holders

Tracked managers holding TSLX at their latest 13F. JSON

3 of the 30 tracked managers held TSLX at their latest 13F, $3.5M in total at quarter-end prices. Two Sigma Investments is the largest at $1.9M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 2 cut.

FundQuarterSharesValueOf portfolioChange in shares
Two Sigma Investments2026-06-30113K$1.9M0.00%-300K
D. E. Shaw & Co.2026-06-3069K$1.2M0.00%-117K
Citadel Advisors2026-06-3024K$406K0.00%+2K

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

What this page is

Sixth Street Specialty Lending in the regulatory record

Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.

Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.

This page follows Sixth Street Specialty Lending (TSLX), SEC CIK 1508655, listed on NYSE. The cross-market tables live on the short interest and insider transactions hubs.

Source and updates

Short interest
FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-03.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-14.JSON and CSV
Large holders
SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-14.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Earnings dates
SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-11-03.JSON and CSV
Insider trades
SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-05-28.JSON and CSV
Company record
EDGAR filing index for CIK 1508655Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
10 requests a minute without a key, 30 with a free key from a free account.

How to read it

  • Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
  • Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
  • Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Other company pages

Datasets

Frequently Asked Questions

How much of TSLX is sold short?
3,867,534 shares were held short at the 2026-10-15 settlement, 7.2 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is TSLX's daily short volume?
On 2026-11-03, 112,661 of the 207,988 TSLX shares reported to FINRA were sold short, 54.2% of the day's reported volume. Short volume is a flow for one day, not a position.
Does TSLX have fails to deliver?
The SEC's latest file shows 6,624 TSLX shares failed to deliver at settlement 2026-10-14. Fails are reported per settlement date and published twice a month with a lag.
Are TSLX insiders buying or selling?
No open-market insider trades were reported for TSLX in the last 90 days. The most recent filings are listed below. Latest filing: Stanley Robert J. (CEO) on 2026-05-28.
Who owns 5% or more of TSLX?
1 holder reports 5% or more of TSLX in its latest filing, on Schedule 13G (passive). The holder is STRS OHIO at 6.3% of the class (0 shares), filed 2026-08-14 for an event on 2026-06-30.
Which tracked 13F managers own TSLX?
3 of the 30 tracked 13F managers held TSLX shares at their latest filing, $3.5M in all. The largest: Two Sigma Investments (113K shares, $1.9M), D. E. Shaw & Co. (69K shares, $1.2M), Ken Griffin's Citadel Advisors (24K shares, $406K).

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.