Westamerica Bancorporation (WABC) Ownership
WABC ownership summary
as of October 18, 2026- Institutions
- 82.6% of shares outstanding
- Insiders
- 3.62% of shares outstanding
- Shares outstanding
- 23.1M
- Float
- 21.8M shares available to trade
- Short interest
- 5.66% 863K shares short
- Days to cover
- 3.40 short interest down 9.1% vs prior month
- Institutions 82.61%
- Insiders 3.62%
- Other investors 13.77%
WABC top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 14.43% | 3.3M | $204.4M | −113,632 (−3.3%) | June 30, 2026 |
| 2 | American Century Companies Inc | 8.47% | 2.0M | $120.0M | +51,202 (+2.7%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 7.45% | 1.7M | $105.4M | −38,905 (−2.2%) | June 30, 2026 |
| 4 | State Street Corp | 6.03% | 1.4M | $85.4M | +190,791 (+15.9%) | June 30, 2026 |
| 5 | Vanguard Capital Management, LLC | 4.48% | 1.0M | $63.4M | −60,547 (−5.5%) | June 30, 2026 |
| 6 | Dimensional Fund Advisors, Inc. | 4.26% | 984K | $60.3M | +38,940 (+4.1%) | June 30, 2026 |
| 7 | Geode Capital Management, LLC | 2.71% | 627K | $38.4M | +13,911 (+2.3%) | June 30, 2026 |
| 8 | AQR Capital Management LLC | 2.14% | 495K | $30.3M | +96,177 (+24.1%) | June 30, 2026 |
| 9 | Nuveen, LLC | 1.65% | 382K | $23.4M | +22,943 (+6.4%) | June 30, 2026 |
| 10 | Rhino Investment Partners, Inc. | 1.41% | 325K | $19.9M | +324,824 (0.0%) | June 30, 2026 |
| 11 | Arrowstreet Capital Limited Partnership | 1.40% | 324K | $19.9M | +40,382 (+14.2%) | June 30, 2026 |
| 12 | Two Sigma Investments LLC | 1.31% | 304K | $18.6M | −49,196 (−13.9%) | June 30, 2026 |
| 13 | Northern Trust Corp | 1.31% | 303K | $18.6M | +14,445 (+5.0%) | June 30, 2026 |
| 14 | Charles Schwab Investment Management Inc | 1.28% | 295K | $18.1M | −2,995 (−1.0%) | June 30, 2026 |
| 15 | Rbo & CO LLC | 1.19% | 276K | $16.9M | −6,647 (−2.4%) | June 30, 2026 |
| 16 | DePrince Race & Zollo Inc | 1.07% | 248K | $15.2M | +248,318 (0.0%) | September 30, 2026 |
| 17 | Mackenzie Investments | 1.05% | 243K | $14.9M | +242,861 (0.0%) | June 30, 2026 |
| 18 | Morgan Stanley - Brokerage Accounts | 1.00% | 230K | $14.1M | −25,158 (−9.9%) | June 30, 2026 |
| 19 | The Goldman Sachs Group Inc | 0.99% | 228K | $14.0M | +1,745 (+0.8%) | June 30, 2026 |
| 20 | Bank of New York Mellon Corp | 0.92% | 211K | $13.0M | +1,953 (+0.9%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 1.3M shares and 7 cut 297K.
WABC top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 5.69% | 1.3M | $80.5M | — | September 30, 2026 |
| 2 | Avantis US Small Cap Value ETF | 3.54% | 818K | $50.2M | +264 (+0.0%) | September 30, 2026 |
| 3 | Vanguard MStar Total Stk Mkt Idx Invest | 3.20% | 741K | $45.4M | — | August 31, 2026 |
| 4 | iShares Russell 2000 ETF | 2.55% | 589K | $36.1M | — | September 30, 2026 |
| 5 | Vanguard Small Cap Index | 2.14% | 494K | $30.3M | −48,114 (−8.9%) | September 30, 2026 |
| 6 | American Century Mid Cap Value Inv | 1.87% | 432K | $26.5M | −143,565 (−24.9%) | September 30, 2026 |
| 7 | Vanguard MStar Small Cap Value Index | 1.39% | 322K | $19.7M | −21,589 (−6.3%) | September 30, 2026 |
| 8 | Fidelity Small Cap Index | 1.13% | 261K | $16.0M | +1,463 (+0.6%) | July 31, 2026 |
| 9 | iShares Russell 2000 Value ETF | 0.94% | 216K | $13.3M | — | September 30, 2026 |
| 10 | State Street® SPDR® S&PRgnllBkgETF | 0.91% | 210K | $12.9M | +6,272 (+3.1%) | September 30, 2026 |
| 11 | State Street SPDR Port S&P 600 Sm CpETF | 0.87% | 201K | $12.3M | — | September 30, 2026 |
| 12 | Vanguard Strategic Small-Cap Equity Inv | 0.77% | 178K | $10.9M | — | June 30, 2026 |
| 13 | ProShares S&P SmCp 600 Div ArstocrtsETF | 0.71% | 163K | $10.0M | −540 (−0.3%) | September 30, 2026 |
| 14 | Vanguard Tax-Managed Small Cap Adm | 0.70% | 163K | $10.0M | — | September 30, 2026 |
| 15 | DFA US Small Cap I | 0.70% | 163K | $10.0M | — | August 31, 2026 |
| 16 | T. Rowe Price US Smlr Coms Eq A | 0.69% | 159K | $9.7M | −5,027 (−3.1%) | August 31, 2026 |
| 17 | Nuveen Quant Small Cap Equity R6 | 0.68% | 157K | $9.6M | — | August 31, 2026 |
| 18 | Canada Life US Small-Mid Cap Growth F | 0.62% | 142K | $8.7M | — | July 31, 2026 |
| 19 | Vanguard Russell 2000 ETF | 0.57% | 132K | $8.1M | −5,254 (−3.8%) | September 30, 2026 |
| 20 | Vanguard Dividend Appreciation ETF | 0.54% | 124K | $7.6M | −8,767 (−6.6%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
WABC insider transactions
latest 4| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-22 | Inez Wondeh | Buy | $53.78 | 61 | $3,281 |
| 2026-04-20 | Robert James Baker Jr | Sell | $53.83 | 759 | $40,857 |
| 2025-04-29 | Inez Wondeh | Buy | $48.51 | 451 | $21,878 |
| 2025-04-28 | John A Thorson | Sell | $48.57 | 2,243 | $108,943 |
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.
WABC shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns WABC
Institutional investors own 82.6% of Westamerica Bancorporation's shares and insiders 3.62%. The largest holder is BlackRock Inc with 14.43% of the shares (3.3M), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 7 reduced their stake in the latest filings. Short interest is 5.66% of the float, or 3.40 days of average trading volume. The share count fell 3.9% since 2014.
Related: WABC analyst forecast, WABC key metrics, WABC dividend history. See the WABC stock overview for the latest quote and news.
WABC ownership FAQ
Who owns the most Westamerica Bancorporation stock?
The largest shareholders of Westamerica Bancorporation are BlackRock Inc (14.43%), American Century Companies Inc (8.47%), Vanguard Portfolio Management, LLC (7.45%), State Street Corp (6.03%), Vanguard Capital Management, LLC (4.48%).
What percentage of Westamerica Bancorporation is owned by institutions?
Institutions hold 82.6% of Westamerica Bancorporation's shares outstanding; insiders hold 3.62%.
Which funds own Westamerica Bancorporation?
The largest fund holders of Westamerica Bancorporation are iShares Core S&P Small-Cap ETF (5.69%), Avantis US Small Cap Value ETF (3.54%), Vanguard MStar Total Stk Mkt Idx Invest (3.20%), iShares Russell 2000 ETF (2.55%), Vanguard Small Cap Index (2.14%).
What is Westamerica Bancorporation's short interest?
863K shares of Westamerica Bancorporation were sold short, 5.66% of the float; at the average daily volume it would take 3.40 days to cover.
Are insiders buying or selling Westamerica Bancorporation?
Of the latest 4 reported insider transactions in Westamerica Bancorporation (since April 28, 2025), 2 were purchases and 2 were sales.
How many shares of Westamerica Bancorporation are outstanding?
Westamerica Bancorporation has 23.1M shares outstanding, of which 21.8M are in the public float.