WD-40 Company (WDFC) Ownership
WDFC ownership summary
as of October 18, 2026- Institutions
- 90.4% of shares outstanding
- Insiders
- 0.91% of shares outstanding
- Shares outstanding
- 13.4M
- Float
- 13.4M shares available to trade
- Short interest
- 5.74% 553K shares short
- Days to cover
- 4.33 short interest down 0.2% vs prior month
- Institutions 90.38%
- Insiders 0.91%
- Other investors 8.71%
WDFC top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 15.47% | 2.1M | $415.3M | +55,768 (+2.8%) | June 30, 2026 |
| 2 | Vanguard Portfolio Management, LLC | 8.02% | 1.1M | $215.3M | +37,790 (+3.6%) | June 30, 2026 |
| 3 | Kayne Anderson Rudnick Investment Management LLC | 4.69% | 629K | $125.9M | −5,313 (−0.8%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 4.50% | 604K | $120.9M | −1,194 (−0.2%) | June 30, 2026 |
| 5 | State Street Corp | 4.09% | 549K | $109.9M | +22,797 (+4.3%) | June 30, 2026 |
| 6 | Geode Capital Management, LLC | 3.29% | 441K | $88.3M | +33,935 (+8.3%) | June 30, 2026 |
| 7 | AllianceBernstein L.P. | 2.81% | 378K | $75.5M | −91,995 (−19.6%) | June 30, 2026 |
| 8 | First Trust Advisors L.P. | 2.60% | 349K | $69.7M | −62,793 (−15.3%) | June 30, 2026 |
| 9 | Dimensional Fund Advisors, Inc. | 2.32% | 312K | $62.3M | +17,297 (+5.9%) | June 30, 2026 |
| 10 | Ameriprise Financial Inc | 2.23% | 299K | $59.8M | +52,891 (+21.5%) | June 30, 2026 |
| 11 | Thrivent Financial For Lutherans | 2.06% | 276K | $55.2M | −477 (−0.2%) | June 30, 2026 |
| 12 | Morgan Stanley - Brokerage Accounts | 1.88% | 253K | $50.6M | −52,100 (−17.1%) | June 30, 2026 |
| 13 | The Goldman Sachs Group Inc | 1.77% | 238K | $47.6M | +151,500 (+175.5%) | June 30, 2026 |
| 14 | Geneva Capital Management | 1.66% | 223K | $44.6M | −59,613 (−21.1%) | June 30, 2026 |
| 15 | American Century Companies Inc | 1.59% | 213K | $42.6M | +193,880 (+1,027.1%) | June 30, 2026 |
| 16 | Two Sigma Investments LLC | 1.53% | 205K | $41.1M | +83,504 (+68.6%) | June 30, 2026 |
| 17 | Ophir Asset Management Pty Ltd | 1.51% | 202K | $40.5M | +96,545 (+91.3%) | June 30, 2026 |
| 18 | Royce & Associates, LP | 1.38% | 186K | $37.2M | +4,843 (+2.7%) | June 30, 2026 |
| 19 | Renaissance Technologies Corp | 1.31% | 176K | $35.2M | −27,400 (−13.5%) | June 30, 2026 |
| 20 | Northern Trust Corp | 1.18% | 158K | $31.6M | +11,500 (+7.9%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 12 holders added 762K shares and 8 cut 301K.
WDFC top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 5.95% | 799K | $159.9M | +186 (+0.0%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 3.18% | 427K | $85.5M | −748 (−0.2%) | August 31, 2026 |
| 3 | iShares Russell 2000 ETF | 2.62% | 352K | $70.4M | −4,032 (−1.1%) | September 30, 2026 |
| 4 | First Trust SMID Cp Rising Div Achv ETF | 2.48% | 333K | $66.7M | — | September 30, 2026 |
| 5 | Vanguard Small Cap Index | 2.25% | 302K | $60.5M | −7,704 (−2.5%) | September 30, 2026 |
| 6 | Vanguard MStar Small Cap Growth Indx Inv | 1.25% | 168K | $33.7M | −9,063 (−5.1%) | September 30, 2026 |
| 7 | Columbia Acorn Inst | 1.19% | 160K | $32.1M | — | August 31, 2026 |
| 8 | Fidelity Small Cap Index | 1.12% | 150K | $30.0M | +1,220 (+0.8%) | July 31, 2026 |
| 9 | Thrivent Mid Cap Stock A | 0.98% | 131K | $26.3M | — | August 31, 2026 |
| 10 | iShares Russell 2000 Growth ETF | 0.96% | 129K | $25.8M | −163 (−0.1%) | September 30, 2026 |
| 11 | State Street SPDR Port S&P 600 Sm CpETF | 0.92% | 123K | $24.6M | — | September 30, 2026 |
| 12 | Virtus KAR Small-Cap Value I | 0.81% | 108K | $21.6M | −6,000 (−5.3%) | June 30, 2026 |
| 13 | Vanguard Consumer Staples ETF | 0.73% | 97K | $19.5M | −1,553 (−1.6%) | September 30, 2026 |
| 14 | American Century Small Cap Growth Inv | 0.67% | 90K | $18.0M | −51,533 (−36.4%) | September 30, 2026 |
| 15 | CT (Lux) Glb Smlr Coms IE | 0.66% | 88K | $17.6M | +29,527 (+50.5%) | June 30, 2026 |
| 16 | Vanguard Tax-Managed Small Cap Adm | 0.64% | 85K | $17.1M | — | September 30, 2026 |
| 17 | Thrivent Mid Cap Stock | 0.61% | 82K | $16.3M | +475 (+0.6%) | August 31, 2026 |
| 18 | Vanguard Russell 2000 ETF | 0.59% | 80K | $15.9M | +894 (+1.1%) | September 30, 2026 |
| 19 | Vanguard Dividend Appreciation ETF | 0.57% | 76K | $15.2M | −270 (−0.4%) | September 30, 2026 |
| 20 | iShares S&P Small-Cap 600 Growth ETF | 0.55% | 73K | $14.7M | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
WDFC insider transactions
latest 7| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-05 | David Pendarvis | Buy | $247.15 | 424 | $104,792 |
| 2025-10-30 | David Pendarvis | Buy | $196.37 | 523 | $102,702 |
| 2025-10-30 | Eric Etchart | Buy | $194.02 | 500 | $97,010 |
| 2025-10-28 | Phenix Q Kiamilev | Buy | $200.46 | 55 | $11,025 |
| 2025-10-28 | Sara Kathleen Hyzer | Buy | $200.46 | 200 | $40,092 |
| 2025-10-28 | Steven A Brass | Buy | $200.46 | 362 | $72,567 |
| 2025-10-27 | Daniel T Carter | Buy | $199.37 | 1,000 | $199,370 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
WDFC shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns WDFC
Institutional investors own 90.4% of WD-40's shares and insiders 0.91%. The largest holder is BlackRock Inc with 15.47% of the shares (2.1M), as of June 30, 2026. Among the top 20 institutions, 12 added shares and 8 reduced their stake in the latest filings. Short interest is 5.74% of the float, or 4.33 days of average trading volume. The share count fell 8.1% since 2014.
Related: WDFC analyst forecast, WDFC key metrics, WDFC dividend history. See the WDFC stock overview for the latest quote and news.
WDFC ownership FAQ
Who owns the most WD-40 stock?
The largest shareholders of WD-40 are BlackRock Inc (15.47%), Vanguard Portfolio Management, LLC (8.02%), Kayne Anderson Rudnick Investment Management LLC (4.69%), Vanguard Capital Management, LLC (4.50%), State Street Corp (4.09%).
What percentage of WD-40 is owned by institutions?
Institutions hold 90.4% of WD-40's shares outstanding; insiders hold 0.91%.
Which funds own WD-40?
The largest fund holders of WD-40 are iShares Core S&P Small-Cap ETF (5.95%), Vanguard MStar Total Stk Mkt Idx Invest (3.18%), iShares Russell 2000 ETF (2.62%), First Trust SMID Cp Rising Div Achv ETF (2.48%), Vanguard Small Cap Index (2.25%).
What is WD-40's short interest?
553K shares of WD-40 were sold short, 5.74% of the float; at the average daily volume it would take 4.33 days to cover.
Are insiders buying or selling WD-40?
Of the latest 7 reported insider transactions in WD-40 (since October 27, 2025), 7 were purchases and 0 were sales.
How many shares of WD-40 are outstanding?
WD-40 has 13.4M shares outstanding, of which 13.4M are in the public float.