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Livermore
Livermore
US stocksTW
ZHEN

Winmark Corp

WINA
Exchange
Nasdaq
Industry
Retail-Miscellaneous Retail
SEC CIK
0000908315

In the last 90 days, Winmark Corp insiders filed 0 open-market purchases and 1 sale; 216 institutions reported holding it in 13F filings for Q2 2026, worth $1.36B 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
327.0K
Shares, settlement Oct 30, 2026
Change
−22.6K
−6.5% vs. Oct 15, 2026
Days to cover
3.51
Short interest ÷ average daily volume
Average daily volume
93.3K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 159,187 sharesNov 15, 2024: 146,626 sharesNov 29, 2024: 146,200 sharesDec 13, 2024: 133,363 sharesDec 31, 2024: 125,849 sharesJan 15, 2025: 132,208 sharesJan 31, 2025: 138,445 sharesFeb 14, 2025: 147,147 sharesFeb 28, 2025: 148,349 sharesMar 14, 2025: 161,033 sharesMar 31, 2025: 160,751 sharesApr 15, 2025: 176,406 sharesApr 30, 2025: 147,322 sharesMay 15, 2025: 179,387 sharesMay 30, 2025: 153,361 sharesJun 13, 2025: 219,589 sharesJun 30, 2025: 234,025 sharesJul 15, 2025: 232,901 sharesJul 31, 2025: 221,906 sharesAug 15, 2025: 218,334 sharesAug 29, 2025: 192,381 sharesSep 15, 2025: 194,229 sharesSep 30, 2025: 214,317 sharesOct 15, 2025: 227,566 sharesOct 31, 2025: 219,202 sharesNov 14, 2025: 236,656 sharesNov 28, 2025: 212,033 sharesDec 15, 2025: 207,306 sharesDec 31, 2025: 223,776 sharesJan 15, 2026: 204,447 sharesJan 30, 2026: 317,625 sharesFeb 13, 2026: 335,798 sharesFeb 27, 2026: 401,396 sharesMar 13, 2026: 359,876 sharesMar 31, 2026: 358,130 sharesApr 15, 2026: 354,445 sharesApr 30, 2026: 321,029 sharesMay 15, 2026: 318,384 sharesMay 29, 2026: 323,835 sharesJun 15, 2026: 321,001 sharesJun 30, 2026: 319,352 sharesJul 15, 2026: 328,479 sharesJul 31, 2026: 326,859 sharesAug 14, 2026: 343,412 sharesAug 31, 2026: 358,129 sharesSep 15, 2026: 370,763 sharesSep 30, 2026: 355,628 sharesOct 15, 2026: 349,634 sharesOct 30, 2026: 327,019 shares
Short interest in WINA by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 2026327.0K−22.6K−6.5%93.3K3.51
Oct 15, 2026349.6K−5.99K−1.7%67.8K5.16
Sep 30, 2026355.6K−15.1K−4.1%130.0K2.73
Sep 15, 2026370.8K+12.6K+3.5%72.6K5.11
Aug 31, 2026358.1K+14.7K+4.3%36.2K9.89
Aug 14, 2026343.4K+16.6K+5.1%53.2K6.45
Jul 31, 2026326.9K−1.62K−0.5%49.2K6.65
Jul 15, 2026328.5K+9.13K+2.9%42.8K7.67
Jun 30, 2026319.4K−1.65K−0.5%50.9K6.28
Jun 15, 2026321.0K−2.83K−0.9%42.6K7.53
May 29, 2026323.8K+5.45K+1.7%43.8K7.40
May 15, 2026318.4K−2.65K−0.8%44.0K7.23
Apr 30, 2026321.0K−33.4K−9.4%58.6K5.48
Apr 15, 2026354.4K−3.69K−1.0%97.2K3.65
Mar 31, 2026358.1K−1.75K−0.5%55.6K6.44
Mar 13, 2026359.9K−41.5K−10.3%103.3K3.48
Feb 27, 2026401.4K+65.6K+19.5%74.4K5.39
Feb 13, 2026335.8K+18.2K+5.7%61.9K5.43
Jan 30, 2026317.6K+113.2K+55.4%134.9K2.35
Jan 15, 2026204.4K−19.3K−8.6%108.6K1.88
Dec 31, 2025223.8K+16.5K+7.9%71.4K3.14
Dec 15, 2025207.3K−4.73K−2.2%96.2K2.16
Nov 28, 2025212.0K−24.6K−10.4%73.2K2.90
Nov 14, 2025236.7K+17.5K+8.0%74.1K3.19
Oct 31, 2025219.2K−8.36K−3.7%69.0K3.17
Oct 15, 2025227.6K+13.2K+6.2%83.8K2.72
Sep 30, 2025214.3K+20.1K+10.3%73.8K2.91
Sep 15, 2025194.2K+1.85K+1.0%78.8K2.46
Aug 29, 2025192.4K−26.0K−11.9%79.4K2.42
Aug 15, 2025218.3K−3.57K−1.6%68.8K3.17
Jul 31, 2025221.9K−11.0K−4.7%56.5K3.93
Jul 15, 2025232.9K−1.12K−0.5%76.6K3.04
Jun 30, 2025234.0K+14.4K+6.6%169.0K1.38
Jun 13, 2025219.6K+66.2K+43.2%587.3K1.00
May 30, 2025153.4K−26.0K−14.5%103.1K1.49
May 15, 2025179.4K+32.1K+21.8%43.7K4.10
Apr 30, 2025147.3K−29.1K−16.5%27.4K5.38
Apr 15, 2025176.4K+15.7K+9.7%30.9K5.71
Mar 31, 2025160.8K−282−0.2%21.9K7.34
Mar 14, 2025161.0K+12.7K+8.6%27.0K5.97
Feb 28, 2025148.3K+1.20K+0.8%24.8K5.99
Feb 14, 2025147.1K+8.70K+6.3%17.1K8.59
Jan 31, 2025138.4K+6.24K+4.7%18.9K7.34
Jan 15, 2025132.2K+6.36K+5.1%19.3K6.85
Dec 31, 2024125.8K−7.51K−5.6%17.9K7.04
Dec 13, 2024133.4K−12.8K−8.8%16.3K8.20
Nov 29, 2024146.2K−426−0.3%20.3K7.22
Nov 15, 2024146.6K−12.6K−7.9%18.6K7.89
Oct 31, 2024159.2K−3.56K−2.2%16.3K9.76

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 WINA by settlement date
Settlement dateSharesPriceValue
Oct 2, 2026417$299.46$124.9K
Sep 16, 2026544$301.55$164.0K
Sep 2, 202616$326.05$5.22K
Aug 31, 202629$337.25$9.78K
Aug 27, 202685$346.07$29.4K
Aug 21, 202644$342.89$15.1K
Aug 12, 20261$369.95$369.95
Aug 11, 2026661$378.20$250.0K
Aug 5, 2026162$354.17$57.4K
Aug 3, 2026650$333.50$216.8K
Jul 20, 20264$388.10$1.55K
Jul 17, 20267$388.95$2.72K
Jun 22, 2026182$400.34$72.9K
Jun 18, 2026736$400.54$294.8K
Jun 8, 202671$377.59$26.8K
Jun 4, 2026340$375.70$127.7K
Jun 2, 2026223$380.52$84.9K
Jun 1, 2026622$378.57$235.5K
May 28, 2026111$383.88$42.6K
May 22, 2026699$362.28$253.2K
May 21, 202680$359.57$28.8K
May 19, 2026448$353.06$158.2K
May 14, 2026151$352.26$53.2K
May 13, 2026302$360.36$108.8K
May 11, 202661$373.40$22.8K
May 5, 20261,108$368.70$408.5K
May 4, 20261,108$373.23$413.5K
Apr 22, 202649$405.24$19.9K
Apr 2, 2026719$433.09$311.4K
Apr 1, 2026719$427.55$307.4K

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 WINA by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 10, 20268,732012,70868.7%
Nov 9, 20268,810015,72956.0%
Nov 6, 202626,246037,49670.0%
Nov 5, 202612,8802020,90061.6%
Nov 4, 202615,447022,12269.8%
Nov 3, 202616,555024,44167.7%
Nov 2, 202611,5042021,61753.2%
Oct 30, 202615,067023,41064.4%
Oct 29, 202611,103019,21657.8%
Oct 28, 202615,320031,70748.3%
Oct 27, 202610,057019,29152.1%
Oct 26, 202612,593022,03057.2%
Oct 23, 202615,082026,15757.7%
Oct 22, 202610,87122717,60061.8%
Oct 21, 202612,080019,53661.8%
Oct 20, 202614,860028,25652.6%
Oct 19, 202618,447029,84861.8%
Oct 16, 202610,887018,24959.7%
Oct 15, 202627,333049,07855.7%
Oct 14, 202622,509028,66178.5%
Oct 13, 202610,156018,04956.3%
Oct 12, 20269,196015,05161.1%
Oct 9, 20266,964012,43756.0%
Oct 8, 20266,7391513,19151.1%
Oct 7, 202613,0724219,33767.6%
Oct 6, 202615,514022,09570.2%
Oct 5, 202623,93366932,71073.2%
Oct 2, 202610,723018,15159.1%
Oct 1, 202616,065024,65565.2%
Sep 30, 202611,619017,41466.7%

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 WINA
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T264,3647,39145,7853,23058.4%
Sep 28, 2026T274,3788,26799,1762,50442.9%
Sep 21, 2026T2132,5359,48168,1153,07966.1%
Sep 14, 2026T2154,32612,848246,8313,43838.5%
Sep 7, 2026T242,1766,90037,6892,28952.8%
Aug 31, 2026T247,1187,20349,5262,74348.8%
Aug 24, 2026T234,8126,22925,2332,20258.0%
Aug 17, 2026T234,0586,89320,3031,87962.7%
Aug 10, 2026T265,1686,50789,8833,33042.0%
Aug 3, 2026T242,4466,86647,0032,71047.5%
Jul 27, 2026T259,7037,72729,7372,41366.8%
Jul 20, 2026T258,2208,18739,4912,42159.6%