Westamerica BancorporationWABC
13F holders, Q1 2026 (March 31)204holders −12
15new positions
26sold out
6famous investors
$52.14avg. 13F price*
At the end of Q1 2026, 204 institutions reported holding Westamerica Bancorporation (WABC) in their 13F filings, down 12 from Q4 2025. 15 opened new positions and 26 sold out. The largest holders were BlackRock, Inc. ($179.9M), American Century Companies Inc. ($99.4M) and Vanguard Portfolio Management LLC ($91.8M). 6 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Cliff Asness (0.0% of AQR Capital Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Westamerica Bancorporation
- CUSIP
- 957090103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 15 | $6.9M |
| Exits | 26 | $14.1M |
All 13F filers, Q4 2025 → Q1 2026: 910,901 shares bought and 1,864,526 shares sold, net −953,625 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 204 holders
| BlackRock, Inc. | 0.00% | Reduce -1.4% | 3,449,335 | $179.9M |
| American Century Companies Inc. | 0.05% | Add +3.9% | 1,906,870 | $99.4M |
| Vanguard Portfolio Management LLC | 0.00% | — | 1,759,550 | $91.8M |
| State Street Corp. | 0.00% | Reduce -1.5% | 1,203,283 | $62.8M |
| Vanguard Capital Management LLC | 0.00% | — | 1,095,078 | $57.1M |
| Dimensional Fund Advisors LP | 0.01% | Add +5.3% | 944,699 | $49.3M |
| Geode Capital Management, LLC | 0.00% | Add +1.1% | 613,162 | $32.0M |
| AQR Capital Management | 0.01% | Add +4.5% | 399,046 | $20.8M |
| Nuveen, LLC | 0.01% | Add +1.3% | 359,345 | $18.7M |
| Two Sigma Investments, LP | 0.02% | Add +90.1% | 353,032 | $18.4M |
| Palisade Capital Management, LP | 0.57% | Reduce -4.3% | 304,954 | $15.9M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.2% | 297,925 | $15.5M |
| Northern Trust Corp. | 0.00% | Add +0.5% | 288,977 | $15.1M |
| Arrowstreet Capital, Limited Partnership | 0.01% | Reduce -3.9% | 283,809 | $14.8M |
| Rbo & Co. LLC | 2.38% | Reduce -1.6% | 282,198 | $14.7M |
| Morgan Stanley | 0.00% | Reduce -13.4% | 255,156 | $13.3M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -12.6% | 226,720 | $11.8M |
| Bank of New York Mellon Corp | 0.00% | Add +0.5% | 209,513 | $10.9M |
| T. Rowe Price Investment Management, Inc. | 0.01% | Reduce -18.1% | 195,842 | $10.2M |
| Qube Research & Technologies Ltd | 0.01% | Reduce -25.0% | 171,380 | $8.9M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 159,933 | $8.3M |
| UBS Group AG | 0.00% | Reduce -65.0% | 159,861 | $8.3M |
| Renaissance Technologies | 0.01% | Add +59.6% | 152,431 | $7.9M |
| Principal Financial Group Inc. | 0.00% | Add +3.9% | 151,149 | $7.9M |
| Leeward Investments, LLC - MA | 0.36% | Reduce -2.6% | 138,180 | $7.2M |
| Invesco Ltd. | 0.00% | Add +16.3% | 132,218 | $6.9M |
| First Trust Advisors LP | 0.00% | Add +64.1% | 130,982 | $6.8M |
| New York State Common Retirement Fund | 0.01% | No change | 129,418 | $6.7M |
| Citadel Advisors | 0.00% | Reduce -40.8% | 124,582 | $6.5M |
| Jupiter Asset Management Ltd. | 0.03% | Reduce -22.8% | 97,707 | $5.1M |
| HRT Financial LP | 0.01% | Add +757.8% | 94,687 | $4.9M |
| Public Sector Pension Investment Board | 0.01% | Add +2.1% | 88,107 | $4.6M |
| Bank of America Corp. | 0.00% | Add +48.0% | 86,384 | $4.5M |
| Franklin Resources Inc. | 0.00% | Add +669.4% | 85,098 | $4.4M |
| Raymond James Financial Inc. | 0.00% | Add +1.9% | 81,360 | $4.2M |
| Man Group plc | 0.01% | Add +122.3% | 80,652 | $4.2M |
| Rhumbline Advisers | 0.00% | Reduce -0.0% | 77,469 | $4.0M |
| Jane Street Group, LLC | 0.00% | Add +4.0% | 69,358 | $3.6M |
| Ieq Capital, LLC | 0.01% | Add +2.1% | 60,743 | $3.2M |
| Maltese Capital Management LLC | 0.62% | Reduce -12.4% | 59,540 | $3.1M |
| Legal & General Group Plc | 0.00% | Reduce -9.1% | 57,854 | $3.0M |
| Millennium Management | 0.00% | Reduce -83.5% | 56,201 | $2.9M |
| Ameriprise Financial Inc. | 0.00% | Reduce -8.1% | 49,996 | $2.6M |
| Swiss National Bank | 0.00% | Reduce -1.9% | 46,900 | $2.4M |
| WINTON GROUP Ltd | 0.09% | Add +0.5% | 46,577 | $2.4M |
| SG Americas Securities, LLC | 0.00% | Add +39.0% | 45,171 | $2.4M |
| Jacobs Levy Equity Management, Inc. | 0.01% | Add +13.2% | 44,291 | $2.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +1.8% | 43,500 | $2.3M |
| Royce & Associates LP | 0.02% | No change | 42,934 | $2.2M |
| BNP Paribas Financial Markets | 0.00% | Add +70.3% | 40,026 | $2.1M |
| Trexquant Investment LP | 0.01% | Reduce -31.9% | 38,052 | $2.0M |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -3.7% | 36,357 | $1.9M |
| T. Rowe Price Associates Inc. | 0.00% | Add +9.1% | 36,184 | $1.9M |
| Voya Investment Management LLC | 0.00% | Reduce -0.6% | 35,429 | $1.8M |
| Assenagon Asset Management S.A. | 0.00% | New | 35,192 | $1.8M |
| JPMorgan Chase & Co. | 0.00% | Reduce -59.1% | 35,321 | $1.8M |
| State of Tennessee, Department of Treasury | 0.01% | Add +201.6% | 32,041 | $1.7M |
| Dark Forest Capital Management LP | 0.14% | Reduce -52.6% | 30,274 | $1.6M |
| LPL Financial LLC | 0.00% | Add +5.2% | 27,192 | $1.4M |
| Alliancebernstein L.P. | 0.00% | No change | 29,520 | $1.4M |
| Cwm, LLC | 0.00% | Add +5.4% | 26,300 | $1.4M |
| Cerity Partners LLC | 0.00% | Add +6.5% | 26,176 | $1.4M |
| Prudential Financial Inc. | 0.00% | Add +9.6% | 25,652 | $1.3M |
| Deutsche Bank AG | 0.00% | Add +10.8% | 25,021 | $1.3M |
| Point72 Asset Management | 0.00% | Reduce -67.1% | 23,670 | $1.2M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Reduce -15.1% | 22,817 | $1.2M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.00% | No change | 22,713 | $1.2M |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -8.4% | 21,852 | $1.1M |
| Cypress Wealth Services, LLC | 0.16% | No change | 21,775 | $1.1M |
| Susquehanna International Group, LLP | 0.00% | New | 20,229 | $1.1M |
| Mariner, LLC | 0.00% | Add +13.4% | 20,193 | $1.1M |
| XTX Topco Ltd | 0.02% | New | 19,667 | $1.0M |
| Citigroup Inc. | 0.00% | Reduce -15.1% | 19,095 | $996K |
| California State Teachers Retirement System | 0.00% | Reduce -21.6% | 19,026 | $992K |
| Edgestream Partners, L.P. | 0.03% | New | 17,007 | $887K |
| Sei Investments Co. | 0.00% | Reduce -36.3% | 16,727 | $873K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -4.1% | 16,435 | $857K |
| Rafferty Asset Management, LLC | 0.00% | Reduce -29.6% | 15,155 | $790K |
| Royal Bank of Canada | 0.00% | Add +1.9% | 15,039 | $784K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | — | 14,676 | $765K |
| SummerHaven Investment Management, LLC | 0.46% | Reduce -12.6% | 14,368 | $749K |
| Vanguard Global Advisers, LLC | 0.00% | — | 14,258 | $744K |
| Horizon Investments, LLC | 0.01% | Add +10.4% | 14,048 | $726K |
| Wells Fargo & Company | 0.00% | Reduce -60.9% | 13,846 | $722K |
| KLP Kapitalforvaltning As | 0.00% | No change | 13,700 | $714K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Reduce -0.8% | 13,546 | $702K |
| State of Alaska, Department of Revenue | 0.01% | Reduce -4.3% | 13,203 | $687K |
| Stifel Financial Corp. | 0.00% | Add +0.9% | 13,124 | $684K |
| Illinois Municipal Retirement Fund | 0.01% | Reduce -5.4% | 12,973 | $677K |
| MetLife Investment Management, LLC | 0.00% | Reduce -94.4% | 12,735 | $664K |
| Barclays PLC | 0.00% | Reduce -72.7% | 12,435 | $648K |
| Engineers Gate Manager LP | 0.01% | Add +16.7% | 12,243 | $638K |
| Odyssean, LLC | 0.23% | New | 12,167 | $635K |
| Hennion & Walsh Asset Management, Inc. | 0.02% | Add +14.2% | 12,106 | $631K |
| HSBC Holdings PLC | 0.00% | No change | 11,945 | $624K |
| FMR LLC | 0.00% | Reduce -61.0% | 11,840 | $617K |
| Janus Henderson Group PLC | 0.00% | No change | 11,748 | $613K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -0.9% | 11,146 | $581K |
| Mercer Global Advisors Inc. | 0.00% | Add +15.0% | 11,073 | $577K |
| Louisiana State Employees Retirement System | 0.01% | Reduce -4.4% | 10,900 | $568K |
"% of holder's portfolio" is WABC's weight in each manager's 13F, not the share of Westamerica Bancorporation the manager owns.