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Mineralys Therapeutics, Inc.

MLYS
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001933414

In the last 90 days, Mineralys Therapeutics, Inc. insiders filed 0 open-market purchases and 5 sales; 225 institutions reported holding it in 13F filings for Q2 2026, worth $2.69B 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
7.69M
Shares, settlement Oct 30, 2026
Change
+248.9K
+3.4% vs. Oct 15, 2026
Days to cover
4.95
Short interest ÷ average daily volume
Average daily volume
1.55M
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 1,389,795 sharesNov 15, 2024: 1,300,184 sharesNov 29, 2024: 1,413,299 sharesDec 13, 2024: 1,586,204 sharesDec 31, 2024: 1,827,351 sharesJan 15, 2025: 1,871,588 sharesJan 31, 2025: 1,862,767 sharesFeb 14, 2025: 1,745,648 sharesFeb 28, 2025: 2,013,841 sharesMar 14, 2025: 2,217,881 sharesMar 31, 2025: 4,708,751 sharesApr 15, 2025: 6,091,993 sharesApr 30, 2025: 6,430,393 sharesMay 15, 2025: 7,206,718 sharesMay 30, 2025: 6,163,892 sharesJun 13, 2025: 6,168,786 sharesJun 30, 2025: 7,667,206 sharesJul 15, 2025: 7,867,965 sharesJul 31, 2025: 6,996,921 sharesAug 15, 2025: 7,408,973 sharesAug 29, 2025: 7,617,115 sharesSep 15, 2025: 7,579,857 sharesSep 30, 2025: 6,883,171 sharesOct 15, 2025: 7,132,486 sharesOct 31, 2025: 6,844,921 sharesNov 14, 2025: 6,889,251 sharesNov 28, 2025: 7,405,674 sharesDec 15, 2025: 7,948,340 sharesDec 31, 2025: 9,242,605 sharesJan 15, 2026: 10,304,718 sharesJan 30, 2026: 10,102,051 sharesFeb 13, 2026: 9,982,346 sharesFeb 27, 2026: 9,607,513 sharesMar 13, 2026: 8,948,568 sharesMar 31, 2026: 8,370,090 sharesApr 15, 2026: 8,778,401 sharesApr 30, 2026: 8,531,291 sharesMay 15, 2026: 9,024,879 sharesMay 29, 2026: 9,477,459 sharesJun 15, 2026: 8,698,119 sharesJun 30, 2026: 11,098,105 sharesJul 15, 2026: 9,552,513 sharesJul 31, 2026: 9,313,645 sharesAug 14, 2026: 9,645,951 sharesAug 31, 2026: 9,332,307 sharesSep 15, 2026: 9,181,891 sharesSep 30, 2026: 7,805,612 sharesOct 15, 2026: 7,438,452 sharesOct 30, 2026: 7,687,327 shares
Short interest in MLYS by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20267.69M+248.9K+3.4%1.55M4.95
Oct 15, 20267.44M−367.2K−4.7%1.40M5.33
Sep 30, 20267.81M−1.38M−15.0%1.51M5.16
Sep 15, 20269.18M−150.4K−1.6%1.44M6.36
Aug 31, 20269.33M−313.6K−3.3%818.6K11.40
Aug 14, 20269.65M+332.3K+3.6%744.8K12.95
Jul 31, 20269.31M−238.9K−2.5%618.2K15.07
Jul 15, 20269.55M−1.55M−13.9%976.5K9.78
Jun 30, 202611.1M+2.40M+27.6%2.12M5.24
Jun 15, 20268.70M−779.3K−8.2%2.48M3.50
May 29, 20269.48M+452.6K+5.0%1.39M6.82
May 15, 20269.02M+493.6K+5.8%1.10M8.19
Apr 30, 20268.53M−247.1K−2.8%870.1K9.81
Apr 15, 20268.78M+408.3K+4.9%1.35M6.51
Mar 31, 20268.37M−578.5K−6.5%1.46M5.73
Mar 13, 20268.95M−658.9K−6.9%1.34M6.69
Feb 27, 20269.61M−374.8K−3.8%866.7K11.08
Feb 13, 20269.98M−119.7K−1.2%1.29M7.74
Jan 30, 202610.1M−202.7K−2.0%947.6K10.66
Jan 15, 202610.3M+1.06M+11.5%1.38M7.48
Dec 31, 20259.24M+1.29M+16.3%1.56M5.91
Dec 15, 20257.95M+542.7K+7.3%1.43M5.57
Nov 28, 20257.41M+516.4K+7.5%1.45M5.10
Nov 14, 20256.89M+44.3K+0.7%2.25M3.07
Oct 31, 20256.84M−287.6K−4.0%853.6K8.02
Oct 15, 20257.13M+249.3K+3.6%1.27M5.62
Sep 30, 20256.88M−696.7K−9.2%1.63M4.22
Sep 15, 20257.58M−37.3K−0.5%4.28M1.77
Aug 29, 20257.62M+208.1K+2.8%991.5K7.68
Aug 15, 20257.41M+412.1K+5.9%865.3K8.56
Jul 31, 20257.00M−871.0K−11.1%737.0K9.49
Jul 15, 20257.87M+200.8K+2.6%558.7K14.08
Jun 30, 20257.67M+1.50M+24.3%1.22M6.28
Jun 13, 20256.17M+4.89K+0.1%509.7K12.10
May 30, 20256.16M−1.04M−14.5%813.4K7.58
May 15, 20257.21M+776.3K+12.1%915.9K7.87
Apr 30, 20256.43M+338.4K+5.6%572.1K11.24
Apr 15, 20256.09M+1.38M+29.4%1.33M4.58
Mar 31, 20254.71M+2.49M+112.3%1.35M3.50
Mar 14, 20252.22M+204.0K+10.1%2.74M1.00
Feb 28, 20252.01M+268.2K+15.4%435.3K4.63
Feb 14, 20251.75M−117.1K−6.3%286.6K6.09
Jan 31, 20251.86M−8.82K−0.5%229.1K8.13
Jan 15, 20251.87M+44.2K+2.4%295.2K6.34
Dec 31, 20241.83M+241.1K+15.2%207.6K8.80
Dec 13, 20241.59M+172.9K+12.2%163.4K9.71
Nov 29, 20241.41M+113.1K+8.7%159.4K8.86
Nov 15, 20241.30M−89.6K−6.5%313.0K4.15
Oct 31, 20241.39M−223.4K−13.9%115.6K12.02

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 MLYS by settlement date
Settlement dateSharesPriceValue
Oct 2, 20261,330$23.72$31.5K
Oct 1, 202610,220$25.13$256.8K
Sep 8, 2026781$28.21$22.0K
Sep 3, 202628,905$29.04$839.4K
Aug 21, 202612,979$25.75$334.2K
Aug 20, 202616,333$26.95$440.2K
Aug 19, 20263,766$26.61$100.2K
Aug 6, 20265,550$26.85$149.0K
Aug 5, 202632$26.50$848
Aug 4, 20265,543$25.78$142.9K
Aug 3, 2026360$25.52$9.19K
Jul 27, 2026575$26.71$15.4K
Jul 22, 202681$27.52$2.23K
Jul 20, 2026297$27.09$8.05K
Jul 17, 20262$27.08$54.16
Jul 6, 2026722$27.69$20.0K
Jul 2, 2026780$26.89$21.0K
Jul 1, 202657$26.98$1.54K
Jun 30, 20261,988$26.88$53.4K
Jun 15, 20262,404$23.62$56.8K
Jun 11, 20269,092$23.76$216.0K
May 22, 20263$30.23$90.69
Apr 24, 20266,064$28.49$172.8K
Apr 22, 202641$28.78$1.18K
Apr 20, 20268,263$30.58$252.7K
Apr 9, 2026170$27.76$4.72K
Apr 2, 2026151$26.41$3.99K
Mar 19, 2026190$23.90$4.54K
Jan 23, 20265,424$34.28$185.9K
Jan 20, 2026100$32.74$3.27K

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 MLYS by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 10, 2026157,6430600,52026.3%
Nov 9, 2026193,02701,145,38116.9%
Nov 6, 2026164,5772,029553,32629.7%
Nov 5, 2026309,772701916,46633.8%
Nov 4, 2026147,2820742,33219.8%
Nov 3, 2026205,2445,3111,142,62018.0%
Nov 2, 2026329,64616,9921,654,94819.9%
Oct 30, 2026228,5181,8891,519,32515.0%
Oct 29, 2026177,4190959,43418.5%
Oct 28, 2026152,3120498,30330.6%
Oct 27, 2026163,94201,091,78815.0%
Oct 26, 202678,0725333,83823.4%
Oct 23, 2026201,9180436,02246.3%
Oct 22, 2026169,6745,225306,63855.3%
Oct 21, 2026155,2720283,31654.8%
Oct 20, 2026171,7970385,27744.6%
Oct 19, 2026257,7980570,90545.2%
Oct 16, 2026245,976334417,90458.9%
Oct 15, 2026293,4790434,13767.6%
Oct 14, 2026174,8820426,17241.0%
Oct 13, 2026347,87301,007,82934.5%
Oct 12, 2026153,0650321,24647.6%
Oct 9, 2026142,1930345,55541.1%
Oct 8, 2026305,9390725,63842.2%
Oct 7, 2026190,2980401,40347.4%
Oct 6, 2026159,2730593,09826.9%
Oct 5, 2026245,2750529,57146.3%
Oct 2, 2026166,6300321,02451.9%
Oct 1, 2026364,6880723,58850.4%
Sep 30, 2026433,23932,510802,60454.0%

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 MLYS
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T21,928,70532,050755,8177,51471.8%
Sep 28, 2026T21,908,42938,2061,168,2456,95162.0%
Sep 21, 2026T21,403,10234,930655,9175,58968.1%
Sep 14, 2026T21,842,11539,280919,5904,86966.7%
Sep 7, 2026T21,538,45530,2391,210,3256,28056.0%
Aug 31, 2026T21,704,51428,553861,5624,38866.4%
Aug 24, 2026T2818,18422,805521,7673,56761.1%
Aug 17, 2026T21,352,65533,083610,2344,45868.9%
Aug 10, 2026T21,219,53031,254709,4224,21663.2%
Aug 3, 2026T2718,80224,008374,8514,61865.7%
Jul 27, 2026T2741,24824,270410,6703,71464.3%
Jul 20, 2026T2729,38122,389400,9743,62564.5%