Who owns WESTAMERICA BANCORPORATION?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of WABC from SEC Form 13F filings across 214 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 214 institutions disclosed 18.5M shares of WESTAMERICA BANCORPORATION worth $1.08B — about 79.2% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
214
13F holders
$1.08B
value, 2026 filers
79.2%
of shares outstanding (18.5M sh)
38
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of WABC's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 3.3M | $195.7M | 0.0% | 14.3% | -3.3% |
| 2 | AMERICAN CENTURY COMPANIES INC | 2.0M | $114.9M | 0.1% | 8.4% | +2.7% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.7M | $101.0M | 0.0% | 7.4% | -2.2% |
| 4 | STATE STREET CORP | 1.4M | $81.8M | 0.0% | 6% | +15.9% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.0M | $60.7M | 0.0% | 4.4% | -5.5% |
| 6 | DIMENSIONAL FUND ADVISORS LP | 983,639 | $57.7M | 0.0% | 4.2% | +4.1% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 627,073 | $36.8M | 0.0% | 2.7% | +2.3% |
| 8 | AQR CAPITAL MANAGEMENT LLC | 495,223 | $29.1M | 0.0% | 2.1% | +24.1% |
| 9 | Nuveen, LLC | 382,288 | $22.4M | 0.0% | 1.6% | +6.4% |
| 10 | Rhino Investment Partners, IncNEW | 324,824 | $19.1M | 5.8% | 1.4% | new |
| 11 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 324,191 | $19.0M | 0.0% | 1.4% | +14.2% |
| 12 | TWO SIGMA INVESTMENTS, LP | 303,836 | $17.8M | 0.0% | 1.3% | -13.9% |
| 13 | NORTHERN TRUST CORP | 303,422 | $17.8M | 0.0% | 1.3% | +5.0% |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 294,930 | $17.3M | 0.0% | 1.3% | -1.0% |
| 15 | RBO & CO LLC | 275,551 | $16.2M | 2.6% | 1.2% | -2.4% |
| 16 | MACKENZIE FINANCIAL CORPNEW | 242,861 | $14.2M | 0.0% | 1% | new |
| 17 | MORGAN STANLEY | 229,998 | $13.5M | 0.0% | 1% | -9.9% |
| 18 | GOLDMAN SACHS GROUP INC | 228,465 | $13.4M | 0.0% | 1% | +0.8% |
| 19 | Bank of New York Mellon Corp | 211,466 | $12.4M | 0.0% | 0.9% | +0.9% |
| 20 | T. Rowe Price Investment Management, Inc. | 193,995 | $11.4M | 0.0% | 0.8% | -0.9% |
| 21 | VANGUARD FIDUCIARY TRUST CO | 154,702 | $9.1M | 0.0% | 0.7% | -3.3% |
| 22 | PRINCIPAL FINANCIAL GROUP INC | 147,747 | $8.7M | 0.0% | 0.6% | -2.3% |
| 23 | Leeward Investments, LLC - MA | 135,284 | $7.9M | 0.4% | 0.6% | -2.1% |
| 24 | UBS Group AG | 132,554 | $7.8M | 0.0% | 0.6% | -17.1% |
| 25 | Invesco Ltd. | 122,748 | $7.2M | 0.0% | 0.5% | -7.2% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.