Skip to main content
Livermore
Livermore
US stocksTW
ZHEN

ProMIS Neurosciences Inc.

PMN
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001374339

In the last 90 days, ProMIS Neurosciences Inc. insiders filed 3 open-market purchases and 0 sales; 27 institutions reported holding it in 13F filings for Q2 2026, worth $84.3M 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
274.8K
Shares, settlement Oct 30, 2026
Change
+28.9K
+11.8% vs. Oct 15, 2026
Days to cover
1.54
Short interest ÷ average daily volume
Average daily volume
178.2K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 239,785 sharesNov 15, 2024: 200,127 sharesNov 29, 2024: 154,564 sharesDec 13, 2024: 164,294 sharesDec 31, 2024: 225,720 sharesJan 15, 2025: 211,920 sharesJan 31, 2025: 250,608 sharesFeb 14, 2025: 194,777 sharesFeb 28, 2025: 154,088 sharesMar 14, 2025: 200,508 sharesMar 31, 2025: 178,585 sharesApr 15, 2025: 186,949 sharesApr 30, 2025: 226,778 sharesMay 15, 2025: 139,360 sharesMay 30, 2025: 167,981 sharesJun 13, 2025: 141,413 sharesJun 30, 2025: 141,264 sharesJul 15, 2025: 1,767,412 sharesJul 31, 2025: 493,000 sharesAug 15, 2025: 67,218 sharesAug 29, 2025: 51,676 sharesSep 15, 2025: 542,277 sharesSep 30, 2025: 320,372 sharesOct 15, 2025: 185,467 sharesOct 31, 2025: 277,227 sharesNov 14, 2025: 193,528 sharesNov 28, 2025: 30,357 sharesDec 15, 2025: 35,040 sharesDec 31, 2025: 22,817 sharesJan 15, 2026: 19,430 sharesJan 30, 2026: 19,026 sharesFeb 13, 2026: 127,864 sharesFeb 27, 2026: 102,963 sharesMar 13, 2026: 135,444 sharesMar 31, 2026: 172,334 sharesApr 15, 2026: 138,078 sharesApr 30, 2026: 141,242 sharesMay 15, 2026: 166,588 sharesMay 29, 2026: 188,790 sharesJun 15, 2026: 200,865 sharesJun 30, 2026: 203,926 sharesJul 15, 2026: 235,779 sharesJul 31, 2026: 283,726 sharesAug 14, 2026: 281,134 sharesAug 31, 2026: 263,744 sharesSep 15, 2026: 240,000 sharesSep 30, 2026: 238,584 sharesOct 15, 2026: 245,838 sharesOct 30, 2026: 274,761 shares
Short interest in PMN by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 2026274.8K+28.9K+11.8%178.2K1.54
Oct 15, 2026245.8K+7.25K+3.0%34.4K7.14
Sep 30, 2026238.6K−1.42K−0.6%33.5K7.12
Sep 15, 2026240.0K−23.7K−9.0%49.9K4.81
Aug 31, 2026263.7K−17.4K−6.2%28.0K9.41
Aug 14, 2026281.1K−2.59K−0.9%26.1K10.76
Jul 31, 2026283.7K+47.9K+20.3%267.1K1.06
Jul 15, 2026235.8K+31.9K+15.6%75.2K3.13
Jun 30, 2026203.9K+3.06K+1.5%42.1K4.84
Jun 15, 2026200.9K+12.1K+6.4%19.6K10.26
May 29, 2026188.8K+22.2K+13.3%22.1K8.55
May 15, 2026166.6K+25.3K+18.0%35.9K4.64
Apr 30, 2026141.2K+3.16K+2.3%42.0K3.36
Apr 15, 2026138.1K−34.3K−19.9%43.2K3.20
Mar 31, 2026172.3K+36.9K+27.2%34.6K4.98
Mar 13, 2026135.4K+32.5K+31.6%59.8K2.27
Feb 27, 2026103.0K−24.9K−19.5%49.6K2.08
Feb 13, 2026127.9K+108.8K+572.1%74.4K1.72
Jan 30, 202619.0K−404−2.1%761.9K1.00
Jan 15, 202619.4K−3.39K−14.8%13.3K1.46
Dec 31, 202522.8K−12.2K−34.9%22.8K1.00
Dec 15, 202535.0K+4.68K+15.4%33.9K1.03
Nov 28, 2025Split30.4K−163.2K−84.3%54.6K1.00
Nov 14, 2025193.5K−83.7K−30.2%383.7K1.00
Oct 31, 2025277.2K+91.8K+49.5%454.6K1.00
Oct 15, 2025185.5K−134.9K−42.1%1.12M1.00
Sep 30, 2025320.4K−221.9K−40.9%575.8K1.00
Sep 15, 2025542.3K+490.6K+949.4%5.90M1.00
Aug 29, 202551.7K−15.5K−23.1%340.4K1.00
Aug 15, 202567.2K−425.8K−86.4%855.4K1.00
Jul 31, 2025493.0K−1.27M−72.1%27.2M1.00
Jul 15, 20251.77M+1.63M+1,151.1%10.1M1.00
Jun 30, 2025141.3K−149−0.1%28.7K4.92
Jun 13, 2025141.4K−26.6K−15.8%50.1K2.82
May 30, 2025168.0K+28.6K+20.5%42.9K3.92
May 15, 2025139.4K−87.4K−38.6%70.1K1.99
Apr 30, 2025226.8K+39.8K+21.3%34.0K6.67
Apr 15, 2025186.9K+8.36K+4.7%41.9K4.46
Mar 31, 2025178.6K−21.9K−10.9%19.5K9.17
Mar 14, 2025200.5K+46.4K+30.1%30.0K6.67
Feb 28, 2025154.1K−40.7K−20.9%63.7K2.42
Feb 14, 2025194.8K−55.8K−22.3%39.3K4.96
Jan 31, 2025250.6K+38.7K+18.3%46.9K5.34
Jan 15, 2025211.9K−13.8K−6.1%56.2K3.77
Dec 31, 2024225.7K+61.4K+37.4%69.5K3.25
Dec 13, 2024164.3K+9.73K+6.3%89.6K1.83
Nov 29, 2024154.6K−45.6K−22.8%43.7K3.54
Nov 15, 2024200.1K−39.7K−16.5%34.8K5.75
Oct 31, 2024239.8K+102.0K+74.1%120.0K2.00

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 PMN by settlement date
Settlement dateSharesPriceValue
Oct 14, 20261,392$8.66$12.1K
Oct 13, 20262,179$9.55$20.8K
Oct 9, 20262,119$9.24$19.6K
Oct 8, 20261,734$9.12$15.8K
Oct 7, 20261,141$9.21$10.5K
Oct 6, 20261,875$9.37$17.6K
Oct 5, 2026479$9.40$4.50K
Sep 23, 2026180$13.49$2.43K
Sep 21, 2026382$14.01$5.35K
Sep 15, 2026620$13.26$8.22K
Sep 14, 2026265$13.56$3.59K
Sep 10, 20265,804$14.37$83.4K
Sep 4, 202652$12.90$670.8
Aug 28, 20265$13.99$69.95
Aug 27, 2026463$14.46$6.69K
Aug 25, 202667$14.80$991.6
Aug 24, 2026302$14.51$4.38K
Aug 21, 2026901$14.91$13.4K
Aug 20, 202685$14.66$1.25K
Aug 19, 2026384$14.98$5.75K
Aug 18, 202649$14.66$718.34
Aug 17, 2026636$14.86$9.45K
Aug 14, 2026287$14.79$4.24K
Aug 13, 2026196$14.50$2.84K
Aug 10, 2026522$14.71$7.68K
Aug 7, 2026484$13.33$6.45K
Aug 4, 2026195$14.14$2.76K
Aug 3, 2026518$13.72$7.11K
Jul 31, 20261,938$14.92$28.9K
Jul 30, 2026178,670$14.06$2.51M

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 PMN by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 11, 202612,330040,86230.2%
Nov 10, 202646,513092,42150.3%
Nov 9, 202660,1911,300103,70058.0%
Nov 6, 202661,447290175,92834.9%
Nov 5, 202631,5632,245112,98627.9%
Nov 4, 2026124,42748,522207,00760.1%
Nov 3, 2026179,63695,689462,68438.8%
Nov 2, 20261,263,101246,2642,137,62059.1%
Oct 30, 2026391,10973,742747,57152.3%
Oct 29, 202610,285027,64137.2%
Oct 28, 202613,554026,25651.6%
Oct 27, 202617,138021,41480.0%
Oct 26, 20262,14609,59722.4%
Oct 23, 20261,59303,86841.2%
Oct 22, 202671201,40550.7%
Oct 21, 20261,70602,50068.2%
Oct 20, 20262,884010,44427.6%
Oct 19, 20261,13003,53332.0%
Oct 16, 20262,373010,87121.8%
Oct 15, 20264,16208,51448.9%
Oct 14, 20262,557398,30530.8%
Oct 13, 20262,45808,79028.0%
Oct 12, 20261,71405,43531.5%
Oct 9, 202678803,36423.4%
Oct 8, 20265,516019,36128.5%
Oct 7, 20264,84508,97354.0%
Oct 6, 20265,834011,70849.8%
Oct 5, 20265,303014,63336.2%
Oct 2, 20269,3641,14415,45460.6%
Oct 1, 202612,67367629,25343.3%

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 PMN
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T220,08045040,30472233.3%
Sep 28, 2026T224,87462140,08896238.3%
Sep 21, 2026T214,29138336,57845628.1%
Sep 14, 2026T211,78548644,04246421.1%
Sep 7, 2026T257,84487429,62459666.1%
Aug 31, 2026T226,36592363,88876629.2%
Aug 24, 2026T229,67472726,99242652.4%
Aug 17, 2026T212,39436226,22240932.1%
Aug 10, 2026T211,32223247,06068319.4%
Aug 3, 2026T221,27944642,48949533.4%
Jul 27, 2026T2312,1574,559534,1039,05636.9%
Jul 20, 2026T2168,6323,386222,7301,78543.1%