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Immuneering Corp

IMRX
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001790340

No open-market purchases or sales by Immuneering Corp insiders were filed in the last 90 days; 111 institutions reported holding it in 13F filings for Q2 2026, worth $171.6M in total; no superinvestor holds it.

Four kinds of short-selling data, each measuring something different:

  • Short interest: shares sold short and not yet bought back, as of a settlement date. FINRA publishes it twice a month, about eight business days after the settlement date.
  • Daily short volume: shares sold short each day in off-exchange trades reported to FINRA. It counts trades, not open positions, and is published the next day.
  • Fails-to-deliver: shares not delivered by the settlement date. The SEC publishes them twice a month, about two weeks late.
  • ATS (dark pool) volume: weekly volume on alternative trading systems and other off-exchange venues. FINRA publishes it two to four weeks after the week.

More in the glossary.

Short interest

Shares sold short and not yet bought back, from FINRA, on every settlement date in the last two years.

Short interest
14.6M
Shares, settlement Oct 30, 2026
Change
−1.73M
−10.6% vs. Oct 15, 2026
Days to cover
19.20
Short interest ÷ average daily volume
Average daily volume
760.1K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 2,045,626 sharesNov 15, 2024: 2,035,375 sharesNov 29, 2024: 1,618,097 sharesDec 13, 2024: 2,291,983 sharesDec 31, 2024: 1,755,894 sharesJan 15, 2025: 3,027,573 sharesJan 31, 2025: 2,160,941 sharesFeb 14, 2025: 1,735,510 sharesFeb 28, 2025: 1,627,849 sharesMar 14, 2025: 1,421,410 sharesMar 31, 2025: 1,067,482 sharesApr 15, 2025: 771,281 sharesApr 30, 2025: 866,083 sharesMay 15, 2025: 660,772 sharesMay 30, 2025: 924,552 sharesJun 13, 2025: 893,835 sharesJun 30, 2025: 1,724,555 sharesJul 15, 2025: 1,654,759 sharesJul 31, 2025: 1,555,893 sharesAug 15, 2025: 1,581,442 sharesAug 29, 2025: 1,830,280 sharesSep 15, 2025: 2,958,155 sharesSep 30, 2025: 6,278,620 sharesOct 15, 2025: 7,692,365 sharesOct 31, 2025: 7,719,578 sharesNov 14, 2025: 7,679,652 sharesNov 28, 2025: 7,289,153 sharesDec 15, 2025: 7,635,854 sharesDec 31, 2025: 10,924,303 sharesJan 15, 2026: 11,200,777 sharesJan 30, 2026: 11,258,617 sharesFeb 13, 2026: 11,420,453 sharesFeb 27, 2026: 11,070,458 sharesMar 13, 2026: 11,255,585 sharesMar 31, 2026: 10,302,389 sharesApr 15, 2026: 9,608,786 sharesApr 30, 2026: 9,500,184 sharesMay 15, 2026: 9,893,669 sharesMay 29, 2026: 12,724,428 sharesJun 15, 2026: 14,027,174 sharesJun 30, 2026: 15,027,581 sharesJul 15, 2026: 15,208,579 sharesJul 31, 2026: 15,401,519 sharesAug 14, 2026: 14,426,945 sharesAug 31, 2026: 14,838,835 sharesSep 15, 2026: 15,550,745 sharesSep 30, 2026: 15,492,438 sharesOct 15, 2026: 16,324,569 sharesOct 30, 2026: 14,595,733 shares
Short interest in IMRX by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 202614.6M−1.73M−10.6%760.1K19.20
Oct 15, 202616.3M+832.1K+5.4%801.9K20.36
Sep 30, 202615.5M−58.3K−0.4%639.8K24.22
Sep 15, 202615.6M+711.9K+4.8%756.6K20.55
Aug 31, 202614.8M+411.9K+2.9%547.5K27.11
Aug 14, 202614.4M−974.6K−6.3%745.0K19.36
Jul 31, 202615.4M+192.9K+1.3%755.9K20.37
Jul 15, 202615.2M+181.0K+1.2%927.0K16.41
Jun 30, 202615.0M+1.00M+7.1%1.97M7.61
Jun 15, 202614.0M+1.30M+10.2%2.27M6.19
May 29, 202612.7M+2.83M+28.6%2.57M4.95
May 15, 20269.89M+393.5K+4.1%663.6K14.91
Apr 30, 20269.50M−108.6K−1.1%821.4K11.57
Apr 15, 20269.61M−693.6K−6.7%727.5K13.21
Mar 31, 202610.3M−953.2K−8.5%1.32M7.80
Mar 13, 202611.3M+185.1K+1.7%861.5K13.06
Feb 27, 202611.1M−350.0K−3.1%563.0K19.66
Feb 13, 202611.4M+161.8K+1.4%951.4K12.00
Jan 30, 202611.3M+57.8K+0.5%1.40M8.04
Jan 15, 202611.2M+276.5K+2.5%4.54M2.47
Dec 31, 202510.9M+3.29M+43.1%1.78M6.14
Dec 15, 20257.64M+346.7K+4.8%780.5K9.78
Nov 28, 20257.29M−390.5K−5.1%880.3K8.28
Nov 14, 20257.68M−39.9K−0.5%1.43M5.38
Oct 31, 20257.72M+27.2K+0.4%1.15M6.71
Oct 15, 20257.69M+1.41M+22.5%2.20M3.50
Sep 30, 20256.28M+3.32M+112.3%4.48M1.40
Sep 15, 20252.96M+1.13M+61.6%1.10M2.69
Aug 29, 20251.83M+248.8K+15.7%1.38M1.33
Aug 15, 20251.58M+25.5K+1.6%345.6K4.58
Jul 31, 20251.56M−98.9K−6.0%453.3K3.43
Jul 15, 20251.65M−69.8K−4.1%1.05M1.57
Jun 30, 20251.72M+830.7K+92.9%5.31M1.00
Jun 13, 2025893.8K−30.7K−3.3%344.7K2.59
May 30, 2025924.6K+263.8K+39.9%253.7K3.64
May 15, 2025660.8K−205.3K−23.7%232.9K2.84
Apr 30, 2025866.1K+94.8K+12.3%141.4K6.13
Apr 15, 2025771.3K−296.2K−27.8%161.5K4.78
Mar 31, 20251.07M−353.9K−24.9%178.6K5.98
Mar 14, 20251.42M−206.4K−12.7%203.2K7.00
Feb 28, 20251.63M−107.7K−6.2%221.3K7.36
Feb 14, 20251.74M−425.4K−19.7%331.3K5.24
Jan 31, 20252.16M−866.6K−28.6%433.4K4.99
Jan 15, 20253.03M+1.27M+72.4%10.2M1.00
Dec 31, 20241.76M−536.1K−23.4%489.0K3.59
Dec 13, 20242.29M+673.9K+41.7%1.24M1.85
Nov 29, 20241.62M−417.3K−20.5%293.9K5.51
Nov 15, 20242.04M−10.3K−0.5%350.6K5.81
Oct 31, 20242.05M+526.4K+34.7%554.7K3.69

Fails-to-deliver

Shares that weren't delivered by the settlement date, from the SEC, for the last 30 dates with fails. The price is the previous day's closing price published by the SEC.

Fails-to-deliver in IMRX by settlement date
Settlement dateSharesPriceValue
Oct 9, 2026248,059$3.74$927.7K
Oct 8, 2026818$3.86$3.16K
Oct 7, 202636,955$3.83$141.5K
Oct 6, 202617,718$4.04$71.6K
Oct 2, 202636,469$4.03$147.0K
Oct 1, 202620,937$4.10$85.8K
Sep 29, 202617,411$4.16$72.4K
Sep 28, 20261,554$4.27$6.64K
Sep 24, 202614,571$4.38$63.8K
Sep 22, 20269,478$4.44$42.1K
Sep 17, 2026236$4.45$1.05K
Sep 16, 20268,408$4.44$37.3K
Sep 14, 20264,502$4.27$19.2K
Sep 11, 20261,559$4.57$7.12K
Sep 10, 202677$4.61$354.97
Sep 9, 2026161$4.78$769.58
Sep 8, 202628,017$4.82$135.0K
Sep 4, 202633,408$5.04$168.4K
Sep 3, 202646,063$5.02$231.2K
Sep 2, 202639,066$4.85$189.5K
Aug 31, 20268,663$4.99$43.2K
Aug 28, 202699$5.21$515.79
Aug 27, 202641,672$5.15$214.6K
Aug 25, 202666,303$5.18$343.4K
Aug 24, 202667,401$5.30$357.2K
Aug 21, 2026127$5.25$666.75
Aug 20, 202633,067$5.33$176.2K
Aug 18, 202617,087$5.22$89.2K
Aug 17, 2026400$5.06$2.02K
Aug 14, 202665,657$5.20$341.4K

Daily short volume

Off-exchange short-sale volume, not short interest: shares sold short each day in trades reported to FINRA, for the last 30 trading days.

The short volume ratio isn't a sentiment gauge: market makers sell short to fill buy orders and to hedge, so short sales are usually about half of off-exchange volume.

Off-exchange short volume in IMRX by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 11, 202647,6720188,87025.2%
Nov 10, 2026149,1660362,52341.1%
Nov 9, 2026194,5792,100393,38049.5%
Nov 6, 2026167,1131,161365,92645.7%
Nov 5, 2026201,6696,806390,64851.6%
Nov 4, 202691,8100242,05037.9%
Nov 3, 2026180,208170434,64241.5%
Nov 2, 2026178,943505388,89846.0%
Oct 30, 2026175,08263499,02535.1%
Oct 29, 2026153,840100316,15248.7%
Oct 28, 2026185,7430469,20839.6%
Oct 27, 202676,5950302,19825.3%
Oct 26, 202680,363747236,75933.9%
Oct 23, 2026147,664100338,23943.7%
Oct 22, 202672,622700263,38027.6%
Oct 21, 2026107,0070236,87545.2%
Oct 20, 2026347,4800526,26266.0%
Oct 19, 202681,8590225,45836.3%
Oct 16, 2026135,7912,009298,72145.5%
Oct 15, 2026123,8192,908479,26925.8%
Oct 14, 2026132,080109333,82439.6%
Oct 13, 2026161,2644,912396,85840.6%
Oct 12, 202661,7720241,32225.6%
Oct 9, 2026111,3171413,84826.9%
Oct 8, 2026417,1751871,078,07838.7%
Oct 7, 2026126,4962,382325,79738.8%
Oct 6, 2026262,9141,599459,68857.2%
Oct 5, 202689,1150227,46239.2%
Oct 2, 2026163,6899,912288,19356.8%
Oct 1, 202690,961100207,35043.9%

ATS (dark pool) volume

Weekly volume on alternative trading systems (ATS) and other off-exchange (OTC) venues, from FINRA, for the last 12 weeks. ATS share is ATS volume ÷ (ATS + OTC volume), not a share of all trading.

Weekly ATS and OTC volume in IMRX
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2868,83110,2051,663,4975,44034.3%
Sep 28, 2026T2596,32812,075869,7264,05140.7%
Sep 21, 2026T2573,38910,507875,4004,76139.6%
Sep 14, 2026T2894,52015,624903,0974,59849.8%
Sep 7, 2026T2688,50612,4881,253,6483,57935.5%
Aug 31, 2026T2453,08210,238896,4834,99533.6%
Aug 24, 2026T2449,5739,651784,1206,20036.4%
Aug 17, 2026T2429,3188,997752,8143,83936.3%
Aug 10, 2026T2714,22817,0151,144,6144,52138.4%
Aug 3, 2026T2444,34614,6701,036,4454,31430.0%
Jul 27, 2026T2528,3639,669729,3153,80742.0%
Jul 20, 2026T2675,80714,205785,9584,13346.2%