Marker Therapeutics (MRKR)
Marker Therapeutics on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq.
109K
Short interest
settlement 2026-10-15
1.1
Days to cover
-1.4 days vs prior
29.4%
Short share of volume
2026-11-02
4,997
Fails to deliver
settlement 2026-10-14
Fri 13 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. JSONAs of 15 October 2026, short interest in MRKR is 109,110 shares, down 117,510 shares over the last month. Over the last 48 readings it ranged from 50,092 shares (29 November 2024) to 1,249,095 shares (29 August 2025). The latest reading sits at the bottom of that range. At the reported average volume of 97K shares a day that is 1.1 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 109,110 | -35.4% | 97,400 | 1.12 |
| 2026-09-30 | 168,895 | -25.5% | 66,665 | 2.53 |
| 2026-09-15 | 226,620 | +62.8% | 67,897 | 3.34 |
| 2026-08-31 | 139,192 | -30.5% | 98,128 | 1.42 |
| 2026-08-14 | 200,212 | +29.7% | 52,084 | 3.84 |
| 2026-07-31 | 154,349 | -4.1% | 42,454 | 3.64 |
| 2026-07-15 | 160,940 | +38.0% | 79,349 | 2.03 |
| 2026-06-30 | 116,653 | -46.4% | 52,848 | 2.21 |
| 2026-06-15 | 217,647 | +6.5% | 62,676 | 3.47 |
| 2026-05-29 | 204,416 | -16.6% | 66,655 | 3.07 |
| 2026-05-15 | 244,966 | +62.7% | 64,788 | 3.78 |
| 2026-04-30 | 150,562 | -21.0% | 79,292 | 1.90 |
| 2026-04-15 | 190,658 | -62.8% | 199,535 | 1.00 |
| 2026-03-31 | 512,684 | -14.3% | 114,314 | 4.48 |
| 2026-03-13 | 598,274 | -8.3% | 128,779 | 4.65 |
| 2026-02-27 | 652,144 | +11.1% | 112,549 | 5.79 |
| 2026-02-13 | 586,941 | +129.5% | 256,977 | 2.28 |
| 2026-01-30 | 255,701 | -17.4% | 485,071 | 1.00 |
| 2026-01-15 | 309,450 | -5.2% | 693,705 | 1.00 |
| 2025-12-31 | 326,551 | -2.6% | 253,319 | 1.29 |
| 2025-12-15 | 335,196 | +43.5% | 311,655 | 1.08 |
| 2025-11-28 | 233,661 | -19.9% | 399,674 | 1.00 |
| 2025-11-14 | 291,574 | +16.0% | 166,354 | 1.75 |
| 2025-10-31 | 251,271 | -12.1% | 148,127 | 1.70 |
| 2025-10-15 | 285,739 | -54.8% | 358,224 | 1.00 |
| 2025-09-30 | 631,431 | -27.0% | 265,092 | 2.38 |
| 2025-09-15 | 864,465 | -30.8% | 375,576 | 2.30 |
| 2025-08-29 | 1,249,095 | +251.0% | 5,019,686 | 1.00 |
| 2025-08-15 | 355,844 | -29.3% | 159,873 | 2.23 |
| 2025-07-31 | 503,060 | +388.1% | 5,657,545 | 1.00 |
| 2025-07-15 | 103,075 | -16.0% | 117,997 | 1.00 |
| 2025-06-30 | 122,736 | -29.2% | 72,650 | 1.69 |
| 2025-06-13 | 173,261 | +46.0% | 180,014 | 1.00 |
| 2025-05-30 | 118,676 | -6.6% | 255,905 | 1.00 |
| 2025-05-15 | 127,043 | +0.3% | 42,317 | 3.00 |
| 2025-04-30 | 126,685 | -35.8% | 34,450 | 3.68 |
| 2025-04-15 | 197,176 | -50.7% | 56,754 | 3.47 |
| 2025-03-31 | 400,020 | +7.4% | 65,087 | 6.15 |
| 2025-03-14 | 372,541 | +170.1% | 440,074 | 1.00 |
| 2025-02-28 | 137,942 | -7.9% | 46,453 | 2.97 |
| 2025-02-14 | 149,806 | -35.5% | 90,308 | 1.66 |
| 2025-01-31 | 232,134 | +20.0% | 102,505 | 2.26 |
| 2025-01-15 | 193,412 | +74.6% | 41,167 | 4.70 |
| 2024-12-31 | 110,755 | +32.4% | 114,083 | 1.00 |
| 2024-12-13 | 83,643 | +67.0% | 73,972 | 1.13 |
| 2024-11-29 | 50,092 | -12.1% | 30,416 | 1.65 |
| 2024-11-15 | 56,987 | -18.6% | 30,052 | 1.90 |
| 2024-10-31 | 69,997 | +14.1% | 39,743 | 1.76 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of MRKR volume is 29.4%, down 23.4 points over the last five sessions. Over the last 30 readings it ranged from 11.2% (25 September 2026) to 78.9% (22 September 2026). The latest reading is 11.0 points below the 30-session average of 40.4%, on 111K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 33K | 111K | 29.4% | 0 |
| 2026-10-30 | 6K | 44K | 13.7% | 0 |
| 2026-10-29 | 40K | 56K | 70.5% | 0 |
| 2026-10-28 | 18K | 51K | 36.1% | 0 |
| 2026-10-27 | 33K | 75K | 43.8% | 0 |
| 2026-10-26 | 66K | 126K | 52.8% | 25,280 |
| 2026-10-23 | 13K | 52K | 24.9% | 0 |
| 2026-10-22 | 20K | 59K | 34.7% | 0 |
| 2026-10-21 | 37K | 80K | 46.4% | 8,316 |
| 2026-10-20 | 44K | 108K | 40.8% | 2,000 |
| 2026-10-19 | 143K | 251K | 56.9% | 1,011 |
| 2026-10-16 | 310K | 828K | 37.4% | 4,807 |
| 2026-10-15 | 53K | 101K | 52.9% | 0 |
| 2026-10-14 | 17K | 55K | 29.9% | 16 |
| 2026-10-13 | 15K | 116K | 13.2% | 0 |
| 2026-10-12 | 22K | 74K | 29.0% | 0 |
| 2026-10-09 | 41K | 68K | 61.0% | 0 |
| 2026-10-08 | 14K | 49K | 27.9% | 0 |
| 2026-10-07 | 4K | 13K | 27.1% | 0 |
| 2026-10-06 | 25K | 55K | 46.3% | 0 |
| 2026-10-05 | 14K | 35K | 39.5% | 0 |
| 2026-10-02 | 22K | 34K | 64.5% | 0 |
| 2026-10-01 | 50K | 78K | 64.4% | 0 |
| 2026-09-30 | 5K | 20K | 22.4% | 0 |
| 2026-09-29 | 21K | 56K | 37.8% | 0 |
| 2026-09-28 | 30K | 64K | 46.8% | 0 |
| 2026-09-25 | 2K | 18K | 11.2% | 220 |
| 2026-09-24 | 21K | 74K | 28.8% | 0 |
| 2026-09-23 | 18K | 42K | 41.9% | 0 |
| 2026-09-22 | 12K | 16K | 78.9% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 14 October 2026, the fails-to-deliver balance in MRKR is 4,997 shares, unchanged over the last settlement date. Over the last 30 readings it ranged from 1 share (2 July 2026) to 25,719 shares (27 January 2026).
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-14 | 4,997 | $0.92 | $5K |
| 2026-10-13 | 4,997 | $1.01 | $5K |
| 2026-10-08 | 5,052 | $1.04 | $5K |
| 2026-08-19 | 160 | $1.15 | $184 |
| 2026-08-18 | 46 | $1.16 | $53 |
| 2026-07-28 | 8 | $1.22 | $10 |
| 2026-07-02 | 1 | $1.45 | $1 |
| 2026-07-01 | 32 | $1.47 | $47 |
| 2026-06-29 | 7,726 | $1.32 | $10K |
| 2026-06-08 | 317 | $1.42 | $450 |
| 2026-06-05 | 1,816 | $1.47 | $3K |
| 2026-05-29 | 227 | $1.51 | $343 |
| 2026-05-27 | 467 | $1.45 | $677 |
| 2026-04-16 | 2 | $1.58 | $3 |
| 2026-04-10 | 12,433 | $1.75 | $22K |
| 2026-03-17 | 444 | $1.41 | $626 |
| 2026-03-13 | 4,334 | $1.35 | $6K |
| 2026-03-12 | 4,406 | $1.37 | $6K |
| 2026-02-24 | 1,100 | $1.47 | $2K |
| 2026-02-18 | 200 | $1.45 | $290 |
| 2026-02-17 | 6,564 | $1.43 | $9K |
| 2026-02-06 | 5,210 | $1.66 | $9K |
| 2026-02-04 | 294 | $1.85 | $544 |
| 2026-01-29 | 2,189 | $1.63 | $4K |
| 2026-01-28 | 2,300 | $1.80 | $4K |
| 2026-01-27 | 25,719 | $1.87 | $48K |
| 2026-01-26 | 1,189 | $2.10 | $2K |
| 2025-12-12 | 18,607 | $1.42 | $26K |
| 2025-11-07 | 198 | $0.88 | $174 |
| 2025-11-05 | 1,809 | $0.90 | $2K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for MRKR in the last 90 days. The most recent filings are listed below. Latest filing: NEA Partners 16, L.P. (TenPercentOwner) on 2024-12-23.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2024-12-23 | NEA Partners 16, L.P. | TenPercentOwner | Buy | 554K | $3.20 | $1.8M | 1.6M |
| 2024-12-23 | ELMS STEVE | Director | Buy | 11K | $3.20 | $35K | 325K |
| 2022-03-24 | Kim Anthony H. | Chief Financial Officer | Tax withholding | 36K | $0.48 | $17K | 114K |
| 2022-03-24 | Kim Anthony H. | Chief Financial Officer | Grant | 151K | $0.00 | $0 | 151K |
| 2022-03-24 | Vera Juan | Chief Scientific Officer & COO | Tax withholding | 33K | $0.48 | $16K | 2.7M |
| 2022-03-24 | Vera Juan | Chief Scientific Officer & COO | Grant | 141K | $0.00 | $0 | 2.7M |
| 2022-03-24 | Hoang Peter L. | President and CEO | Tax withholding | 48K | $0.48 | $23K | 483K |
| 2022-03-24 | Hoang Peter L. | President and CEO | Grant | 199K | $0.00 | $0 | 532K |
| 2021-06-08 | Wilson John Robert | Director | Grant | 13K | $0.00 | $0 | 7.8M |
| 2021-06-08 | Eansor Norman David | Director | Grant | 13K | $0.00 | $0 | 37K |
| 2021-06-08 | ELMS STEVE | Director | Grant | 13K | $0.00 | $0 | 30K |
| 2021-06-08 | Laskow-Pooley David | Director | Grant | 13K | $0.00 | $0 | 55K |
| 2021-06-08 | Wasserman Frederick Gerald | Director | Grant | 13K | $0.00 | $0 | 65K |
| 2021-05-18 | Wasserman Frederick Gerald | Director | Buy | 10K | $2.41 | $24K | 53K |
| 2021-03-25 | Eansor Norman David | Director | Gift | 7K | $0.00 | $0 | 7K |
| 2021-03-25 | Eansor Norman David | Director | Gift | 14K | $0.00 | $0 | 2K |
| 2021-03-25 | Eansor Norman David | Director | Gift | 7K | $0.00 | $0 | 7K |
| 2021-03-16 | Eansor Norman David | Director | Buy | 14K | $17.50 | $250K | 17K |
| 2021-03-16 | ELMS STEVE | Director | Buy | 1.1M | $1.75 | $2.0M | 3.1M |
| 2021-03-16 | Hoang Peter L. | President and CEO | Buy | 143K | $1.75 | $250K | 333K |
| 2021-03-16 | Vera Juan | Chief Development Officer | Buy | 571K | $1.75 | $1000K | 2.6M |
| 2021-03-16 | Wilson John Robert | Director | Buy | 1.7M | $1.75 | $3.0M | 7.8M |
| 2021-03-16 | NEA Partners 16, L.P. | TenPercentOwner | Buy | 5.7M | $1.75 | $10.0M | 10.7M |
| 2021-03-16 | BASKETT FOREST | TenPercentOwner | Buy | 5.7M | $1.75 | $10.0M | 10.7M |
| 2021-03-16 | Behbahani Ali | TenPercentOwner | Buy | 5.7M | $1.75 | $10.0M | 10.7M |
| 2021-03-16 | Chang Carmen | TenPercentOwner | Buy | 5.7M | $1.75 | $10.0M | 10.7M |
| 2021-03-16 | Florence Anthony A. Jr. | TenPercentOwner | Buy | 5.7M | $1.75 | $10.0M | 10.7M |
| 2021-03-16 | Makhzoumi Mohamad | TenPercentOwner | Buy | 5.7M | $1.75 | $10.0M | 10.7M |
| 2021-03-16 | MAKOWER JOSHUA | TenPercentOwner | Buy | 5.7M | $1.75 | $10.0M | 10.7M |
| 2021-03-16 | SANDELL SCOTT D | TenPercentOwner | Buy | 5.7M | $1.75 | $10.0M | 10.7M |
| 2021-03-16 | Sonsini Peter W. | TenPercentOwner | Buy | 5.7M | $1.75 | $10.0M | 10.7M |
| 2021-03-16 | Walker Paul Edward | TenPercentOwner | Buy | 5.7M | $1.75 | $10.0M | 10.7M |
| 2020-02-18 | DART KENNETH BRYAN | TenPercentOwner | Exercise (in or at the money) | 417K | $1.20 | $500K | 4.1M |
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. JSON13 holders report 5% or more of MRKR in their latest filing, 10 on Schedule 13D (active intent). The largest reported stake is New Enterprise Associates 16, L.P. at 9.9% of the class (1,670,081 shares), filed 2025-11-17 for an event on 2025-11-13.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2025-11-17 | 13D/Ano. 5 | New Enterprise Associates 16, L.P.partnership | 1.7M | 9.9% | 2025-11-13 |
| 2025-11-17 | 13D/Ano. 5 | NEA Partners 16, L.P.partnership | 1.7M | 9.9% | 2025-11-13 |
| 2025-11-17 | 13D/Ano. 5 | NEA 16 GP, LLCother entity | 1.7M | 9.9% | 2025-11-13 |
| 2025-11-17 | 13D/Ano. 5 | Forest Baskettindividual | 1.7M | 9.9% | 2025-11-13 |
| 2025-11-17 | 13D/Ano. 5 | Ali Behbahaniindividual | 1.7M | 9.9% | 2025-11-13 |
| 2025-11-17 | 13D/Ano. 5 | Carmen Changindividual | 1.7M | 9.9% | 2025-11-13 |
| 2025-11-17 | 13D/Ano. 5 | Anthony A. Florence, Jr.individual | 1.7M | 9.9% | 2025-11-13 |
| 2025-11-17 | 13D/Ano. 5 | Mohamad H. Makhzoumiindividual | 1.7M | 9.9% | 2025-11-13 |
| 2025-11-17 | 13D/Ano. 5 | Scott D. Sandellindividual | 1.7M | 9.9% | 2025-11-13 |
| 2025-11-17 | 13D/Ano. 5 | Paul Walkerindividual | 1.7M | 9.9% | 2025-11-13 |
| 2025-11-14 | 13G/Ano. 1 | Alyeska Investment Group, L.P.investment adviser | 1.3M | 9.9% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Alyeska Fund GP, LLCother entity | 1.3M | 9.9% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Anand Parekhindividual | 1.3M | 9.9% | 2025-09-30 |
13F holders
Tracked managers holding MRKR at their latest 13F. JSON3 of the 30 tracked managers held MRKR at their latest 13F, $503K in total at quarter-end prices. Renaissance Technologies is the largest at $367K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 1 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Renaissance Technologies | 2026-06-30 | 249K | $367K | 0.00% | +74K |
| Two Sigma Investments | 2026-06-30 | 60K | $88K | 0.00% | -800 |
| Citadel Advisors | 2026-06-30 | 33K | $48K | 0.00% | new |
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
Marker 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 Marker Therapeutics (MRKR), SEC CIK 1094038, 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 2025-11-17.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 2026-03-19.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 2024-12-23.JSON and CSV
- Company record
- EDGAR filing index for CIK 1094038Ticker, 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.
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Datasets
Frequently Asked Questions
How much of MRKR is sold short?
What is MRKR's daily short volume?
Does MRKR have fails to deliver?
Are MRKR insiders buying or selling?
Who owns 5% or more of MRKR?
Which tracked 13F managers own MRKR?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.