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Hyperfine, Inc.

HYPR
Exchange
Nasdaq
Industry
Electromedical & Electrotherapeutic Apparatus
SEC CIK
0001833769

In the last 90 days, Hyperfine, Inc. insiders filed 0 open-market purchases and 2 sales; 80 institutions reported holding it in 13F filings for Q2 2026, worth $29.4M 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
3.94M
Shares, settlement Oct 30, 2026
Change
+169.5K
+4.5% vs. Oct 15, 2026
Days to cover
7.97
Short interest ÷ average daily volume
Average daily volume
495.2K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 1,555,638 sharesNov 15, 2024: 1,499,251 sharesNov 29, 2024: 1,446,304 sharesDec 13, 2024: 1,464,531 sharesDec 31, 2024: 1,471,545 sharesJan 15, 2025: 1,398,679 sharesJan 31, 2025: 1,343,746 sharesFeb 14, 2025: 2,138,270 sharesFeb 28, 2025: 2,021,776 sharesMar 14, 2025: 1,780,965 sharesMar 31, 2025: 2,375,655 sharesApr 15, 2025: 1,628,255 sharesApr 30, 2025: 1,387,341 sharesMay 15, 2025: 1,196,120 sharesMay 30, 2025: 1,407,487 sharesJun 13, 2025: 3,230,207 sharesJun 30, 2025: 2,984,556 sharesJul 15, 2025: 3,140,955 sharesJul 31, 2025: 2,573,184 sharesAug 15, 2025: 2,223,609 sharesAug 29, 2025: 2,044,509 sharesSep 15, 2025: 2,130,239 sharesSep 30, 2025: 1,840,551 sharesOct 15, 2025: 2,230,131 sharesOct 31, 2025: 956,061 sharesNov 14, 2025: 931,666 sharesNov 28, 2025: 780,752 sharesDec 15, 2025: 659,270 sharesDec 31, 2025: 854,005 sharesJan 15, 2026: 1,250,028 sharesJan 30, 2026: 1,154,228 sharesFeb 13, 2026: 1,359,488 sharesFeb 27, 2026: 1,248,359 sharesMar 13, 2026: 1,251,491 sharesMar 31, 2026: 1,351,638 sharesApr 15, 2026: 1,145,426 sharesApr 30, 2026: 1,013,946 sharesMay 15, 2026: 1,565,187 sharesMay 29, 2026: 1,619,173 sharesJun 15, 2026: 1,694,898 sharesJun 30, 2026: 3,358,029 sharesJul 15, 2026: 2,568,688 sharesJul 31, 2026: 2,955,093 sharesAug 14, 2026: 3,277,190 sharesAug 31, 2026: 3,649,331 sharesSep 15, 2026: 4,236,754 sharesSep 30, 2026: 3,901,393 sharesOct 15, 2026: 3,774,668 sharesOct 30, 2026: 3,944,217 shares
Short interest in HYPR by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20263.94M+169.5K+4.5%495.2K7.97
Oct 15, 20263.77M−126.7K−3.3%1.87M2.02
Sep 30, 20263.90M−335.4K−7.9%461.1K8.46
Sep 15, 20264.24M+587.4K+16.1%376.7K11.25
Aug 31, 20263.65M+372.1K+11.4%540.3K6.75
Aug 14, 20263.28M+322.1K+10.9%575.2K5.70
Jul 31, 20262.96M+386.4K+15.0%787.5K3.75
Jul 15, 20262.57M−789.3K−23.5%1.00M2.56
Jun 30, 20263.36M+1.66M+98.1%2.55M1.32
Jun 15, 20261.69M+75.7K+4.7%443.4K3.82
May 29, 20261.62M+54.0K+3.5%569.9K2.84
May 15, 20261.57M+551.2K+54.4%794.2K1.97
Apr 30, 20261.01M−131.5K−11.5%761.5K1.33
Apr 15, 20261.15M−206.2K−15.3%292.1K3.92
Mar 31, 20261.35M+100.1K+8.0%677.4K2.00
Mar 13, 20261.25M+3.13K+0.3%569.5K2.20
Feb 27, 20261.25M−111.1K−8.2%233.7K5.34
Feb 13, 20261.36M+205.3K+17.8%316.6K4.29
Jan 30, 20261.15M−95.8K−7.7%592.2K1.95
Jan 15, 20261.25M+396.0K+46.4%487.6K2.56
Dec 31, 2025854.0K+194.7K+29.5%687.7K1.24
Dec 15, 2025659.3K−121.5K−15.6%894.1K1.00
Nov 28, 2025780.8K−150.9K−16.2%418.9K1.86
Nov 14, 2025931.7K−24.4K−2.6%566.7K1.64
Oct 31, 2025956.1K−1.27M−57.1%1.43M1.00
Oct 15, 20252.23M+389.6K+21.2%682.3K3.27
Sep 30, 20251.84M−289.7K−13.6%347.5K5.30
Sep 15, 20252.13M+85.7K+4.2%302.3K7.05
Aug 29, 20252.04M−179.1K−8.1%204.1K10.02
Aug 15, 20252.22M−349.6K−13.6%505.2K4.40
Jul 31, 20252.57M−567.8K−18.1%700.5K3.67
Jul 15, 20253.14M+156.4K+5.2%177.6K17.68
Jun 30, 20252.98M−245.7K−7.6%302.8K9.86
Jun 13, 20253.23M+1.82M+129.5%11.9M1.00
May 30, 20251.41M+211.4K+17.7%687.6K2.05
May 15, 20251.20M−191.2K−13.8%400.3K2.99
Apr 30, 20251.39M−240.9K−14.8%129.2K10.74
Apr 15, 20251.63M−747.4K−31.5%351.6K4.63
Mar 31, 20252.38M+594.7K+33.4%4.68M1.00
Mar 14, 20251.78M−240.8K−11.9%229.7K7.75
Feb 28, 20252.02M−116.5K−5.5%367.6K5.50
Feb 14, 20252.14M+794.5K+59.1%1.02M2.09
Jan 31, 20251.34M−54.9K−3.9%89.9K14.94
Jan 15, 20251.40M−72.9K−5.0%162.2K8.62
Dec 31, 20241.47M+7.01K+0.5%142.4K10.33
Dec 13, 20241.46M+18.2K+1.3%81.8K17.90
Nov 29, 20241.45M−52.9K−3.5%126.1K11.47
Nov 15, 20241.50M−56.4K−3.6%146.3K10.25
Oct 31, 20241.56M−21.2K−1.3%33.8K46.04

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 HYPR by settlement date
Settlement dateSharesPriceValue
Oct 8, 20268,696$0.85$7.39K
Oct 7, 20266,129$0.87$5.33K
Oct 5, 202676,594$0.89$68.2K
Oct 2, 2026163$0.87$141.81
Sep 30, 202611,246$0.81$9.11K
Sep 29, 2026196$0.84$164.64
Sep 24, 20261,997$0.79$1.58K
Sep 23, 20261,997$0.81$1.62K
Sep 18, 202616$0.77$12.32
Sep 11, 20265,171$0.79$4.09K
Sep 10, 202611,090$0.79$8.76K
Sep 9, 202638,977$0.82$32.0K
Sep 8, 202626,810$0.81$21.7K
Sep 4, 202616,395$0.84$13.8K
Sep 2, 20261,923$0.81$1.56K
Sep 1, 20263,458$0.82$2.84K
Aug 31, 20261,299$0.83$1.08K
Aug 28, 20265,085$0.85$4.32K
Aug 26, 20264,262$0.87$3.71K
Aug 21, 20268,092$0.90$7.28K
Aug 19, 2026307$0.90$276.3
Jul 31, 202627$0.93$25.11
Jul 29, 202621,415$0.92$19.7K
Jul 17, 20262,311$0.98$2.26K
Jul 9, 202625$1.12$28
Jul 2, 2026665$1.34$891.1
Jun 25, 202630$1.46$43.8
Jun 24, 202633$1.47$48.51
Jun 23, 202634$1.49$50.66
Jun 16, 20261,979$1.38$2.73K

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 HYPR by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 11, 2026127,0600209,81260.6%
Nov 10, 2026118,6430219,48054.1%
Nov 9, 2026119,6890203,16158.9%
Nov 6, 2026142,73127,819258,27255.3%
Nov 5, 2026263,8048,068456,16357.8%
Nov 4, 202657,5291242,85623.7%
Nov 3, 2026344,193472852,97640.4%
Nov 2, 202654,540099,28154.9%
Oct 30, 2026149,0910357,95241.7%
Oct 29, 2026145,7470512,28628.5%
Oct 28, 2026210,7390600,65735.1%
Oct 27, 2026101,8020204,50349.8%
Oct 26, 202671,9630111,79564.4%
Oct 23, 202696,0970177,89254.0%
Oct 22, 2026121,8020310,36239.2%
Oct 21, 2026184,0360298,13161.7%
Oct 20, 2026119,6140149,39780.1%
Oct 19, 2026191,3220221,46486.4%
Oct 16, 2026246,9990346,87871.2%
Oct 15, 2026395,6030565,70669.9%
Oct 14, 2026231,0051429,13653.8%
Oct 13, 2026192,5980342,88156.2%
Oct 12, 2026330,34922,267683,60048.3%
Oct 9, 2026698,2233,9331,299,54753.7%
Oct 8, 20262,488,74043,3994,515,20555.1%
Oct 7, 2026216,4050365,62059.2%
Oct 6, 2026282,7815,289545,69051.8%
Oct 5, 2026325,1350568,41957.2%
Oct 2, 2026645,200490821,77478.5%
Oct 1, 2026439,1620736,69759.6%

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 HYPR
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2694,1166,4599,399,12613,4006.9%
Sep 28, 2026T2377,5932,5842,134,7271,86315.0%
Sep 21, 2026T2341,4524,9461,122,5091,48723.3%
Sep 14, 2026T2260,0354,255745,8321,24825.9%
Sep 7, 2026T2167,2183,995345,59687732.6%
Aug 31, 2026T2217,8024,9441,009,2211,49217.8%
Aug 24, 2026T2243,8884,2831,334,7261,70815.4%
Aug 17, 2026T2293,6013,6801,777,6222,30114.2%
Aug 10, 2026T2375,1643,8651,429,4001,66720.8%
Aug 3, 2026T2295,8863,6641,423,6901,81817.2%
Jul 27, 2026T2408,1734,0131,189,2041,66925.6%
Jul 20, 2026T2458,2853,999984,7811,98831.8%