XOOMAR

TScan Therapeutics (TCRX)

TScan Therapeutics on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq.

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2.3M

Short interest

settlement 2026-10-15

3.4

Days to cover

+0.1 days vs prior

66.2%

Short share of volume

2026-11-02

35,120

Fails to deliver

settlement 2026-10-14

Wed 11 Nov

Next earnings

estimated date

$0

Insider flow, 90 days

0 buys, 0 sells

As of 2026-11-02.

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 TCRX is 2,277,116 shares, down 3,047 shares over the last month. Over the last 48 readings it ranged from 708,200 shares (30 June 2026) to 2,566,263 shares (30 January 2026). At the reported average volume of 669K shares a day that is 3.4 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-10-152,277,116-8.4%669,3593.40
2026-09-302,486,277+9.0%764,4303.25
2026-09-152,280,163+30.3%1,966,1551.16
2026-08-311,749,828+9.3%250,9976.97
2026-08-141,601,066+2.7%377,8944.24
2026-07-311,558,905+12.6%560,6852.78
2026-07-151,384,530+95.5%1,160,8181.19
2026-06-30708,200-7.1%782,9251.00
2026-06-15762,526-18.4%392,3901.94
2026-05-29934,310+6.6%457,5922.04
2026-05-15876,559+0.7%840,6061.04
2026-04-30870,161-7.7%1,098,6311.00
2026-04-15942,877-50.0%1,566,6201.00
2026-03-311,885,270-0.4%500,4003.77
2026-03-131,892,903-1.9%702,7202.69
2026-02-271,930,510-3.7%428,1504.51
2026-02-132,003,903-21.9%460,8874.35
2026-01-302,566,263+8.7%485,0945.29
2026-01-152,360,339+13.6%555,9244.25
2025-12-312,077,294-18.2%625,4723.32
2025-12-152,539,912+8.7%775,7293.27
2025-11-282,335,680+19.8%850,6782.75
2025-11-141,949,768+11.9%1,348,0691.45
2025-10-311,742,176+4.0%569,4613.06
2025-10-151,675,616+6.9%959,8071.75
2025-09-301,567,792-9.0%277,3615.65
2025-09-151,722,543+0.7%238,6067.22
2025-08-291,711,155-7.7%201,8928.48
2025-08-151,853,155+7.9%229,3118.08
2025-07-311,717,845-6.3%303,4865.66
2025-07-151,833,410-7.3%327,4315.60
2025-06-301,978,866-12.8%928,7142.13
2025-06-132,268,054+12.6%401,9775.64
2025-05-302,014,752-12.5%1,264,0021.59
2025-05-152,303,027+28.4%258,9868.89
2025-04-301,793,660-1.3%519,0463.46
2025-04-151,816,555-10.3%472,3483.85
2025-03-312,025,238+6.6%580,8343.49
2025-03-141,900,134-14.6%321,7175.91
2025-02-282,225,112+11.1%625,0503.56
2025-02-142,002,749+10.1%252,5837.93
2025-01-311,818,854-9.0%204,7048.89
2025-01-151,998,350-20.7%389,2985.13
2024-12-312,519,323+7.3%687,5623.66
2024-12-132,346,815+1.3%665,9223.52
2024-11-292,317,690+0.9%170,07013.63
2024-11-152,295,860+6.1%339,8866.75
2024-10-312,164,450-3.5%156,95513.79

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 2 November 2026, the short share of TCRX volume is 66.2%, up 25.0 points over the last five sessions. Over the last 30 readings it ranged from 17.6% (25 September 2026) to 75.6% (6 October 2026). The latest reading is 16.3 points above the 30-session average of 49.9%, on 294K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-11-02194K294K66.2%3,693
2026-10-3042K138K30.7%2
2026-10-2923K37K62.8%2,800
2026-10-2878K174K44.8%0
2026-10-2787K222K39.0%22,000
2026-10-26111K268K41.3%20,992
2026-10-2366K130K50.7%0
2026-10-2299K152K64.8%0
2026-10-21301K443K67.8%0
2026-10-20203K302K67.3%0
2026-10-19149K249K59.9%0
2026-10-16169K334K50.5%0
2026-10-15236K559K42.3%0
2026-10-14142K306K46.6%22,874
2026-10-13130K255K50.9%2,729
2026-10-1267K242K27.8%0
2026-10-09257K515K50.0%25,733
2026-10-08416K897K46.4%52,261
2026-10-07116K369K31.6%33,514
2026-10-06257K340K75.6%62,925
2026-10-05332K463K71.7%29,259
2026-10-0252K84K61.9%0
2026-10-01198K464K42.7%500
2026-09-30164K327K50.3%0
2026-09-29144K371K38.8%0
2026-09-2890K238K37.7%0
2026-09-2543K246K17.6%0
2026-09-24218K364K59.8%0
2026-09-23227K674K33.7%0
2026-09-22466K703K66.3%150

Fails to deliver

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

As of 14 October 2026, the fails-to-deliver balance in TCRX is 35,120 shares, down 3,366 shares over the last settlement date. Over the last 30 readings it ranged from 21 shares (9 October 2026) to 78,382 shares (4 May 2026).

SettlementShares failedPriceValue
2026-10-1435,120$0.22$8K
2026-10-1338,486$0.24$9K
2026-10-0921$0.23$5
2026-09-252,286$0.35$800
2026-09-189,387$0.33$3K
2026-09-174,108$0.33$1K
2026-09-167,015$0.32$2K
2026-09-104,663$0.33$2K
2026-09-0810,536$0.39$4K
2026-09-0310,491$0.38$4K
2026-08-3114,974$0.75$11K
2026-08-288,544$0.75$6K
2026-08-274,177$0.78$3K
2026-08-266,173$0.79$5K
2026-08-079,241$0.76$7K
2026-07-1716,834$0.90$15K
2026-07-1620,595$0.92$19K
2026-07-099,702$1.26$12K
2026-07-0217,762$1.07$19K
2026-06-0414,982$0.97$15K
2026-05-0478,382$1.22$96K
2026-04-24281$1.20$337
2026-04-1527,618$1.06$29K
2026-04-101,096$1.06$1K
2026-04-021,301$1.03$1K
2026-03-255,430$1.03$6K
2026-03-13963$1.13$1K
2026-02-207,105$1.02$7K
2026-02-0514,829$0.96$14K
2026-01-30540$1.04$562

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for TCRX in the last 90 days. The most recent filings are listed below. Latest filing: ZDRAVESKI ZORAN (See Remarks) on 2026-10-01.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-10-01ZDRAVESKI ZORANSee RemarksGrant300K$0.00$0305K
2026-10-01MacBeath GavinChief Executive OfficerGrant1.0M$0.00$01.0M
2025-12-23Lynx1 Capital Management LP10% ownerBuy6K$0.90$6K8.0M
2025-12-22Lynx1 Capital Management LP10% ownerBuy76K$0.90$68K8.0M
2025-12-19Lynx1 Capital Management LP10% ownerBuy80K$0.90$72K7.9M
2025-05-20Lynx1 Capital Management LPTenPercentOwnerBuy1.2M$1.20$1.4M7.9M
2025-05-19Lynx1 Capital Management LPTenPercentOwnerBuy1.4M$1.20$1.7M6.7M
2024-12-13Nichols WestonTenPercentOwnerBuy100K$2.90$290K5.4M
2024-12-12Nichols WestonTenPercentOwnerBuy32K$3.01$96K5.3M
2024-11-15Nichols WestonTenPercentOwnerBuy947$4.34$4K5.2M
2024-09-23Klencke BarbaraDirectorBuy5K$5.29$26K45K
2024-08-26Klencke BarbaraDirectorBuy5K$5.53$28K40K
2024-08-23ZDRAVESKI ZORANSee RemarksExercise or conversion55K$4.85$266K67K
2024-08-23ZDRAVESKI ZORANSee RemarksExercise or conversion25K$3.27$82K92K
2024-08-23ZDRAVESKI ZORANSee RemarksExercise or conversion13K$1.81$24K105K
2024-08-23ZDRAVESKI ZORANSee RemarksExercise or conversion64K$2.49$160K169K
2024-08-23ZDRAVESKI ZORANSee RemarksSell165K$5.78$952K5K
2024-08-23Klencke BarbaraDirectorBuy5K$5.69$28K35K
2023-12-19BARBERICH TIMOTHY JDirectorBuy317$4.97$2K67K
2023-12-18BARBERICH TIMOTHY JDirectorBuy29K$4.89$141K67K
2023-12-14Klencke BarbaraDirectorBuy5K$5.08$25K30K
2023-06-02BARBERICH TIMOTHY JDirectorBuy38K$2.63$100K38K
2023-05-31Lynx1 Capital Management LPTenPercentOwnerSell15K$2.52$38K5.2M
2023-05-31Lynx1 Capital Management LPTenPercentOwnerSell10K$2.51$25K5.2M
2023-05-31Lynx1 Capital Management LPTenPercentOwnerSell400$2.51$1K5.2M
2022-12-28Silver Brian M.Chief Financial OfficerBuy3K$1.56$5K33K
2022-12-27Silver Brian M.Chief Financial OfficerBuy3K$1.50$4K30K
2022-05-18SOUTHWELL DAVID PChief Executive OfficerBuy10K$3.55$36K172K
2022-05-18SOUTHWELL DAVID PChief Executive OfficerBuy15K$3.62$54K162K
2022-05-11667, L.P.Director,TenPercentOwnerBuy3K$1.99$6K256K
2022-05-11667, L.P.Director,TenPercentOwnerBuy23K$1.99$46K2.5M
2022-05-10667, L.P.Director,TenPercentOwnerBuy102K$1.93$197K1.7M
2022-05-10667, L.P.Director,TenPercentOwnerBuy41K$1.70$69K145K
2022-05-10667, L.P.Director,TenPercentOwnerBuy758K$1.95$1.5M2.5M
2022-05-10667, L.P.Director,TenPercentOwnerBuy95K$1.95$185K253K
2022-05-10667, L.P.Director,TenPercentOwnerBuy13K$1.93$25K158K
2022-05-10667, L.P.Director,TenPercentOwnerBuy325K$1.70$553K1.6M
2022-03-24Silver Brian M.Chief Financial OfficerBuy15K$3.40$51K27K
2021-12-23SOUTHWELL DAVID PChief Executive OfficerExercise or conversion49K$1.97$96K147K
2021-09-23ZDRAVESKI ZORANChief Legal OfficerBuy5K$7.48$35K5K
2021-09-21MacBeath GavinChief Scientific OfficerBuy57$6.19$35350K
2021-09-21Silver Brian M.Chief Financial OfficerBuy5K$6.32$32K12K
2021-09-20MacBeath GavinChief Scientific OfficerBuy5K$6.22$31K50K
2021-09-09Silver Brian M.Chief Financial OfficerBuy6K$8.48$50K7K
2021-09-08SOUTHWELL DAVID PChief Executive OfficerBuy11K$8.73$96K98K
2021-08-27Desmarais WilliamChief Business OfficerBuy3K$9.08$23K3K
2021-07-20Silver Brian M.Chief Financial OfficerBuy1K$15.00$15K1K
2021-07-20BARBERICH TIMOTHY JDirectorConversion33Kprice not stated in the filingnot stated33K
2021-07-20667, L.P.DirectorBuy1.3M$15.00$19.8M1.3M
2021-07-20667, L.P.DirectorBuy105K$15.00$1.6M105K
2021-07-20Westphal Christoph HTenPercentOwnerBuy133K$15.00$2.0M1.3M
2021-07-20Westphal Christoph HTenPercentOwnerConversion1.1Mprice not stated in the filingnot stated1.1M

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

11 holders report 5% or more of TCRX in their latest filing, all on Schedule 13G (passive). The largest reported stake is Weston Nichols at 13.1% of the class (20,519,148 shares), filed 2026-08-14 for an event on 2026-06-30.

FiledFormHolderSharesOf classEvent
2026-09-2513GReadout Capital, LPinvestment adviser, partnership3.5M5.4%2026-09-21
2026-09-2513GReadout Capital GP, LLCparent holding company3.5M5.4%2026-09-21
2026-09-2513GMatthew Smithparent holding company, individual3.5M5.4%2026-09-21
2026-08-1413G/Ano. 4LAMPERT MARK Nindividual6.4M10.0%2026-06-30
2026-08-1413G/Ano. 4BVF PARTNERS L P/ILinvestment adviser, partnership6.4M10.0%2026-06-30
2026-08-1413G/Ano. 4BVF INC/ILcorporation6.4M10.0%2026-06-30
2026-08-1413G/Ano. 4BVF GP HOLDINGS LLCother entity6.3M9.8%2026-06-30
2026-08-1413G/Ano. 4BVF I GP LLCother entity3.6M5.7%2026-06-30
2026-08-1413G/Ano. 4BIOTECHNOLOGY VALUE FUND L Ppartnership3.6M5.7%2026-06-30
2026-08-1413G/Ano. 4BVF II GP LLCother entity2.7M4.2%2026-06-30
2026-08-1413G/Ano. 4BIOTECHNOLOGY VALUE FUND II LPpartnership2.7M4.2%2026-06-30
2026-08-1413G/Ano. 4BVF Partners OS Ltd.corporation83K0.1%2026-06-30
2026-08-1413G/Ano. 4Biotechnology Value Trading Fund OS LPpartnership83K0.1%2026-06-30
2026-08-1413G/Ano. 3Weston Nicholsindividual20.5M13.1%2026-06-30
2026-08-1413G/Ano. 3Lynx1 Capital Management LPpartnership20.5M13.1%2026-06-30

13F holders

Tracked managers holding TCRX at their latest 13F. JSON

5 of the 30 tracked managers held TCRX at their latest 13F, $5.9M 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 3 added shares and 2 cut.

FundQuarterSharesValueOf portfolioChange in shares
Two Sigma Investments2026-06-301.9M$1.9M0.00%+741K
Renaissance Technologies2026-06-301.3M$1.3M0.00%-38K
Millennium Management2026-06-301.2M$1.1M0.00%-297K
Citadel Advisors2026-06-301.0M$989K0.00%+691K
D. E. Shaw & Co.2026-06-30548K$537K0.00%+229K

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

TScan Therapeutics 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 TScan Therapeutics (TCRX), SEC CIK 1783328, listed on Nasdaq. 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 2026-11-02.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 2026-09-25.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 2026-08-12.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 2026-10-01.JSON and CSV
Company record
EDGAR filing index for CIK 1783328Ticker, 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.

Datasets

Frequently Asked Questions

How much of TCRX is sold short?
2,277,116 shares were held short at the 2026-10-15 settlement, 3.4 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 TCRX's daily short volume?
On 2026-11-02, 194,373 of the 293,558 TCRX shares reported to FINRA were sold short, 66.2% of the day's reported volume. Short volume is a flow for one day, not a position.
Does TCRX have fails to deliver?
The SEC's latest file shows 35,120 TCRX shares failed to deliver at settlement 2026-10-14. Fails are reported per settlement date and published twice a month with a lag.
Are TCRX insiders buying or selling?
No open-market insider trades were reported for TCRX in the last 90 days. The most recent filings are listed below. Latest filing: ZDRAVESKI ZORAN (See Remarks) on 2026-10-01.
Who owns 5% or more of TCRX?
11 holders report 5% or more of TCRX in their latest filing, all on Schedule 13G (passive). The largest reported stake is Weston Nichols at 13.1% of the class (20,519,148 shares), filed 2026-08-14 for an event on 2026-06-30.
Which tracked 13F managers own TCRX?
5 of the 30 tracked 13F managers held TCRX shares at their latest filing, $5.9M in all. The largest: Two Sigma Investments (1.9M shares, $1.9M), Renaissance Technologies (1.3M shares, $1.3M), Izzy Englander's Millennium Management (1.2M shares, $1.1M), Ken Griffin's Citadel Advisors (1.0M shares, $989K), D. E. Shaw & Co. (548K shares, $537K).

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