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Livermore
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WD 40 Co

WDFC
Exchange
Nasdaq
Industry
Miscellaneous Chemical Products
SEC CIK
0000105132

No open-market purchases or sales by WD 40 Co insiders were filed in the last 90 days; 390 institutions reported holding it in 13F filings for Q2 2026, worth $2.85B 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
472.0K
Shares, settlement Oct 30, 2026
Change
−15.7K
−3.2% vs. Oct 15, 2026
Days to cover
2.50
Short interest ÷ average daily volume
Average daily volume
188.6K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 1,139,503 sharesNov 15, 2024: 1,143,069 sharesNov 29, 2024: 1,140,297 sharesDec 13, 2024: 1,209,176 sharesDec 31, 2024: 1,181,715 sharesJan 15, 2025: 992,210 sharesJan 31, 2025: 889,225 sharesFeb 14, 2025: 897,695 sharesFeb 28, 2025: 891,303 sharesMar 14, 2025: 884,658 sharesMar 31, 2025: 879,966 sharesApr 15, 2025: 903,499 sharesApr 30, 2025: 961,788 sharesMay 15, 2025: 1,006,214 sharesMay 30, 2025: 958,258 sharesJun 13, 2025: 993,786 sharesJun 30, 2025: 963,509 sharesJul 15, 2025: 980,025 sharesJul 31, 2025: 766,816 sharesAug 15, 2025: 674,691 sharesAug 29, 2025: 669,603 sharesSep 15, 2025: 672,914 sharesSep 30, 2025: 610,095 sharesOct 15, 2025: 643,356 sharesOct 31, 2025: 611,867 sharesNov 14, 2025: 605,981 sharesNov 28, 2025: 627,932 sharesDec 15, 2025: 677,674 sharesDec 31, 2025: 642,618 sharesJan 15, 2026: 672,324 sharesJan 30, 2026: 625,982 sharesFeb 13, 2026: 638,123 sharesFeb 27, 2026: 648,640 sharesMar 13, 2026: 712,589 sharesMar 31, 2026: 750,000 sharesApr 15, 2026: 642,961 sharesApr 30, 2026: 587,445 sharesMay 15, 2026: 530,639 sharesMay 29, 2026: 561,873 sharesJun 15, 2026: 593,369 sharesJun 30, 2026: 525,584 sharesJul 15, 2026: 490,134 sharesJul 31, 2026: 501,357 sharesAug 14, 2026: 519,061 sharesAug 31, 2026: 560,166 sharesSep 15, 2026: 553,890 sharesSep 30, 2026: 552,633 sharesOct 15, 2026: 487,682 sharesOct 30, 2026: 471,999 shares
Short interest in WDFC by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 2026472.0K−15.7K−3.2%188.6K2.50
Oct 15, 2026487.7K−65.0K−11.8%111.7K4.37
Sep 30, 2026552.6K−1.26K−0.2%141.0K3.92
Sep 15, 2026553.9K−6.28K−1.1%112.0K4.95
Aug 31, 2026560.2K+41.1K+7.9%90.8K6.17
Aug 14, 2026519.1K+17.7K+3.5%101.6K5.11
Jul 31, 2026501.4K+11.2K+2.3%135.1K3.71
Jul 15, 2026490.1K−35.5K−6.7%266.0K1.84
Jun 30, 2026525.6K−67.8K−11.4%186.7K2.81
Jun 15, 2026593.4K+31.5K+5.6%154.5K3.84
May 29, 2026561.9K+31.2K+5.9%148.5K3.78
May 15, 2026530.6K−56.8K−9.7%132.1K4.02
Apr 30, 2026587.4K−55.5K−8.6%194.3K3.02
Apr 15, 2026643.0K−107.0K−14.3%242.6K2.65
Mar 31, 2026750.0K+37.4K+5.3%171.6K4.37
Mar 13, 2026712.6K+63.9K+9.9%142.8K4.99
Feb 27, 2026648.6K+10.5K+1.7%125.6K5.16
Feb 13, 2026638.1K+12.1K+1.9%183.0K3.49
Jan 30, 2026626.0K−46.3K−6.9%146.8K4.26
Jan 15, 2026672.3K+29.7K+4.6%273.5K2.46
Dec 31, 2025642.6K−35.1K−5.2%134.6K4.77
Dec 15, 2025677.7K+49.7K+7.9%109.0K6.22
Nov 28, 2025627.9K+22.0K+3.6%99.6K6.30
Nov 14, 2025606.0K−5.89K−1.0%99.0K6.12
Oct 31, 2025611.9K−31.5K−4.9%174.2K3.51
Oct 15, 2025643.4K+33.3K+5.5%112.5K5.72
Sep 30, 2025610.1K−62.8K−9.3%176.9K3.45
Sep 15, 2025672.9K+3.31K+0.5%117.3K5.74
Aug 29, 2025669.6K−5.09K−0.8%83.4K8.03
Aug 15, 2025674.7K−92.1K−12.0%104.3K6.47
Jul 31, 2025766.8K−213.2K−21.8%187.6K4.09
Jul 15, 2025980.0K+16.5K+1.7%207.0K4.73
Jun 30, 2025963.5K−30.3K−3.1%263.2K3.66
Jun 13, 2025993.8K+35.5K+3.7%317.7K3.13
May 30, 2025958.3K−48.0K−4.8%99.4K9.64
May 15, 20251.01M+44.4K+4.6%77.1K13.05
Apr 30, 2025961.8K+58.3K+6.5%99.7K9.65
Apr 15, 2025903.5K+23.5K+2.7%192.8K4.69
Mar 31, 2025880.0K−4.69K−0.5%134.3K6.55
Mar 14, 2025884.7K−6.64K−0.8%124.7K7.10
Feb 28, 2025891.3K−6.39K−0.7%94.9K9.40
Feb 14, 2025897.7K+8.47K+1.0%79.9K11.24
Jan 31, 2025889.2K−103.0K−10.4%83.3K10.68
Jan 15, 2025992.2K−189.5K−16.0%151.3K6.56
Dec 31, 20241.18M−27.5K−2.3%101.5K11.64
Dec 13, 20241.21M+68.9K+6.0%85.7K14.11
Nov 29, 20241.14M−2.77K−0.2%81.8K13.95
Nov 15, 20241.14M+3.57K+0.3%97.0K11.79
Oct 31, 20241.14M−156.2K−12.1%128.3K8.88

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 WDFC by settlement date
Settlement dateSharesPriceValue
Oct 14, 20261,349$204.41$275.7K
Oct 9, 20262$203.90$407.8
Oct 6, 20262$205.86$411.72
Sep 23, 2026154$194.23$29.9K
Sep 11, 2026186$199.04$37.0K
Sep 9, 202626$201.73$5.24K
Sep 8, 202628$207.57$5.81K
Aug 18, 202662$229.01$14.2K
Aug 14, 20261$230.10$230.1
Aug 13, 20264$232.50$930
Jul 31, 2026236$227.76$53.8K
Jul 30, 20266,858$222.40$1.53M
Jul 22, 20261$237.72$237.72
Jul 16, 2026480$249.40$119.7K
Jul 1, 202678$243.64$19.0K
Jun 29, 20262$248.33$496.66
Jun 24, 2026873$227.19$198.3K
Jun 22, 202695$227.21$21.6K
Jun 2, 2026234$196.85$46.1K
May 22, 202649$206.49$10.1K
May 18, 20262,321$201.37$467.4K
May 13, 2026768$204.68$157.2K
Apr 24, 20261,153$223.06$257.2K
Apr 23, 202642$224.02$9.41K
Apr 22, 202620$219.06$4.38K
Apr 20, 20261,786$213.38$381.1K
Apr 16, 20262$201.37$402.74
Apr 15, 2026212$204.77$43.4K
Apr 13, 20261$214.01$214.01
Apr 10, 20267$223.02$1.56K

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 WDFC by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 13, 202615,540024,56663.3%
Nov 12, 202617,957128,75862.4%
Nov 11, 202613,961327,37051.0%
Nov 10, 202616,218027,56358.8%
Nov 9, 202614,445024,06160.0%
Nov 6, 202614,058022,54162.4%
Nov 5, 202642,17220061,23968.9%
Nov 4, 202628,758039,45472.9%
Nov 3, 202620,334030,08567.6%
Nov 2, 202626,348036,09373.0%
Oct 30, 202659,028075,64278.0%
Oct 29, 202632,177043,56073.9%
Oct 28, 202633,741053,04963.6%
Oct 27, 202643,910059,55073.7%
Oct 26, 202668,099093,20073.1%
Oct 23, 202641,764073,36656.9%
Oct 22, 202690,9042133,07868.3%
Oct 21, 202687,5870125,68869.7%
Oct 20, 202635,649047,43475.2%
Oct 19, 202648,975075,10565.2%
Oct 16, 202632,87911486,37538.1%
Oct 15, 202634,870067,56051.6%
Oct 14, 202630,468041,08474.2%
Oct 13, 202618,028033,80053.3%
Oct 12, 202615,382027,07656.8%
Oct 9, 202620,209030,96165.3%
Oct 8, 202616,773031,32253.6%
Oct 7, 202618,7461225,78872.7%
Oct 6, 202617,843126,89166.4%
Oct 5, 202624,848035,54369.9%

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 WDFC
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2106,39311,07074,0572,92759.0%
Sep 28, 2026T2135,84211,303105,5553,97856.3%
Sep 21, 2026T2144,89311,44097,2314,08759.8%
Sep 14, 2026T2176,94411,680189,6264,41048.3%
Sep 7, 2026T2111,93911,01078,2293,57958.9%
Aug 31, 2026T2105,0599,847114,2953,44147.9%
Aug 24, 2026T2103,05510,02673,4513,06458.4%
Aug 17, 2026T2129,46714,90282,4273,00061.1%
Aug 10, 2026T2121,40912,51944,2732,68873.3%
Aug 3, 2026T2166,91711,40179,6883,65367.7%
Jul 27, 2026T2177,84112,708117,8904,44360.1%
Jul 20, 2026T2161,37413,28372,5493,72669.0%