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HowShorted

IMRX short interest Nasdaq Global Market

Immuneering Corporation Class. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: an SEC filer exists but no defensible share count is available yet.

Shares short
15,550,745
vs previous settlement
+711,910 (+4.8%)
days to cover
20.55
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for IMRX shares short

Days to cover

FINRA's own figure: reported shares short divided by the security's average daily trading volume, published alongside each settlement.

Aggregate net short position time series for IMRX days to cover

Fails to deliver

The SEC's fails-to-deliver figure for IMRX: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Latest balance
4,502
14 Sep 2026
Highest in window
2,593,625
29 Jun 2026
Days with a balance
125
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Immuneering Corporation Class fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 2.6M shares.

History

Every FINRA settlement we hold for IMRX, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202615,550,745+711,91020.55
31 Aug 202614,838,835+411,89027.11
14 Aug 202614,426,945−974,57419.36
31 Jul 202615,401,519+192,94020.37
15 Jul 202615,208,579+180,99816.41
30 Jun 202615,027,581+1,000,4077.61
15 Jun 202614,027,174+1,302,7466.19
29 May 202612,724,428+2,830,7594.95
15 May 20269,893,669+393,48514.91
30 Apr 20269,500,184−108,60211.57
15 Apr 20269,608,786−693,60313.21
31 Mar 202610,302,389−953,1967.80
13 Mar 202611,255,585+185,12713.06
27 Feb 202611,070,458−349,99519.66
13 Feb 202611,420,453+161,83612.00
30 Jan 202611,258,617+57,8408.04
15 Jan 202611,200,777+276,4742.47
31 Dec 202510,924,303+3,288,4496.14
15 Dec 20257,635,854+346,7019.78
28 Nov 20257,289,153−390,4998.28
14 Nov 20257,679,652−39,9265.38
31 Oct 20257,719,578+27,2136.71
15 Oct 20257,692,365+1,413,7453.50
30 Sep 20256,278,620+3,320,4651.40
15 Sep 20252,958,155+1,127,8752.69
29 Aug 20251,830,280+248,8381.33
15 Aug 20251,581,442+25,5494.58
31 Jul 20251,555,893−98,8663.43
15 Jul 20251,654,759−69,7961.57
30 Jun 20251,724,555+830,7201.00
13 Jun 2025893,835−30,7172.59
30 May 2025924,552+263,7803.64
15 May 2025660,772−205,3112.84
30 Apr 2025866,083+94,8026.13
15 Apr 2025771,281−296,2014.78
31 Mar 20251,067,482−353,9285.98
14 Mar 20251,421,410−206,4397.00
28 Feb 20251,627,849−107,6617.36
14 Feb 20251,735,510−425,4315.24
31 Jan 20252,160,941−866,6324.99
15 Jan 20253,027,573+1,271,6791.00
31 Dec 20241,755,894−536,0893.59
13 Dec 20242,291,983+673,8861.85
29 Nov 20241,618,097−417,2785.51
15 Nov 20242,035,375−10,2515.81
31 Oct 20242,045,626+526,4093.69
15 Oct 20241,519,217−114,5501.00
30 Sep 20241,633,767−1,388,3181.00
13 Sep 20243,022,085+1,501,7911.00
30 Aug 20241,520,294−463,1923.95
15 Aug 20241,983,486−709,9831.00
31 Jul 20242,693,469−182,4224.06
15 Jul 20242,875,891−601,24412.86
28 Jun 20243,477,135−210,2087.67
14 Jun 20243,687,343+217,51413.92
31 May 20243,469,829−57,30920.13
15 May 20243,527,138+317,92511.96
30 Apr 20243,209,213+478,8507.63
15 Apr 20242,730,363−145,5353.94
28 Mar 20242,875,898+265,5141.23
15 Mar 20242,610,384−74,2102.62
29 Feb 20242,684,594−18,31665.38
15 Feb 20242,702,910+30,20653.51
31 Jan 20242,672,704+37,42057.29
12 Jan 20242,635,284+3,51661.62
29 Dec 20232,631,768+89,36139.43
15 Dec 20232,542,407−25,59629.33
30 Nov 20232,568,003−192,02139.75
15 Nov 20232,760,024−34,02934.75
31 Oct 20232,794,053+49,99753.88
13 Oct 20232,744,056−27,20761.33
29 Sep 20232,771,263−67,090101.27
15 Sep 20232,838,353+39,41537.18
31 Aug 20232,798,938−1,34174.22
15 Aug 20232,800,279+144,99156.67
31 Jul 20232,655,288−23,10040.63
14 Jul 20232,678,388+11,84845.63
30 Jun 20232,666,540+692,3957.28
15 Jun 20231,974,145+154,47725.26
31 May 20231,819,668+251,12823.44
15 May 20231,568,540+316,46021.98
28 Apr 20231,252,080+243,28614.38
14 Apr 20231,008,794+57,24513.65
31 Mar 2023951,549+88,08815.92
15 Mar 2023863,461+34,19016.50
28 Feb 2023829,271+1,22739.14
15 Feb 2023828,044−4,86414.32
31 Jan 2023832,908−25,01825.37
13 Jan 2023857,926−13,90831.10
30 Dec 2022871,834−10,78518.10
15 Dec 2022882,619+57,47216.82
30 Nov 2022825,147+48,37326.69
15 Nov 2022776,774−49,42917.14
31 Oct 2022826,203+12,74815.76
14 Oct 2022813,455+7,49912.61
30 Sep 2022805,956+67,3269.60
15 Sep 2022738,630−19,06613.61
31 Aug 2022757,696−25,67852.65
15 Aug 2022783,374−67,52843.47
29 Jul 2022850,902−236,92430.72
15 Jul 20221,087,826−59,23419.16
30 Jun 20221,147,060−473,7844.24
15 Jun 20221,620,844+20,46617.41
31 May 20221,600,378−199,51122.39
13 May 20221,799,889−579,31313.88
29 Apr 20222,379,202+221,57118.67
14 Apr 20222,157,631+230,67315.26
31 Mar 20221,926,958+581,1355.84
15 Mar 20221,345,823−129,2669.61
28 Feb 20221,475,089+159,05812.09
15 Feb 20221,316,031+139,7538.41
31 Jan 20221,176,278+33,08211.99
14 Jan 20221,143,196+67,20317.21
31 Dec 20211,075,993+436,7038.71
15 Dec 2021639,290+17,27710.21
30 Nov 2021622,013+20,55917.86
15 Nov 2021601,454−13,70312.22
29 Oct 2021615,157−9,42616.58
15 Oct 2021624,583+58,4018.30
30 Sep 2021566,182+240,0602.64
15 Sep 2021326,122+155,5981.81
31 Aug 2021170,524+27,5112.07
13 Aug 2021143,013–1.08

Scroll inside the table for earlier settlements, back to 13 Aug 2021.

Questions

Frequently asked questions

What is IMRX's short interest?
15,550,745 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 711,910 from the previous settlement.
Why is there no percentage for IMRX?
Because no defensible share count exists to divide by: an SEC filer exists but no defensible share count is available yet. The symbol maps to an SEC filer, but its share count cannot be used yet. A newly listed company needs two cover-page counts on file before the first is trusted; a split or an unexplained jump pauses publication until a fresh SEC count corroborates it; a secondary share class publishes under the company's primary line; and a foreign filer's short count is in depositary-share units. This page upgrades to a percentage automatically once a defensible count exists.
What is IMRX's days to cover?
20.55 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume, published in the same file and shown verbatim. We hold no volume data ourselves.
Is this the short float?
No. This page shows FINRA's share count only. Short float divides that count by the public float, and short interest as we publish it elsewhere divides it by shares outstanding from SEC filings. Neither denominator is available for this line, so neither ratio is shown.
How often does this update?
FINRA member firms report short positions as of the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. We ingest each file the day it appears and re-read recent settlements for revisions.

Ranked companies with a percentage: most shorted US stocks. Other symbols with counts only: shares short without a percentage. Browse by name: US companies A to Z.