Westamerica Bancorporation
WABC- Exchange
- Nasdaq
- Industry
- National Commercial Banks
- SEC CIK
- 0000311094
No open-market purchases or sales by Westamerica Bancorporation insiders were filed in the last 90 days; 214 institutions reported holding it in 13F filings for Q2 2026, worth $1.08B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Westamerica Bancorporation as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 204
- −7 vs. Q4 2025
- Shares held
- 18.5M
- +1.95M (+11.7%) vs. Q4 2025
- Total value
- $967.0M
- +$173.1M (+21.8%) vs. Q4 2025
- New holders
- 21
- 69 more added
- Sold out
- 28
- 82 more reduced
5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting WABC on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 214 | $1.08B |
| Q1 2026 | 204 | $967.0M |
| Q4 2025 | 216 | $948.4M |
| Q3 2025 | 216 | $980.1M |
| Q2 2025 | 205 | $967.1M |
| Q1 2025 | 205 | $1.05B |
| Q4 2024 | 208 | $1.08B |
| Q3 2024 | 194 | $1.01B |
| Q2 2024 | 188 | $999.6M |
| Q1 2024 | 191 | $997.6M |
| Q4 2023 | 177 | $1.15B |
| Q3 2023 | 179 | $862.7M |
| Q2 2023 | 189 | $775.0M |
| Q1 2023 | 191 | $911.0M |
| Q4 2022 | 213 | $1.24B |
| Q3 2022 | 177 | $1.09B |
| Q2 2022 | 167 | $1.17B |
| Q1 2022 | 147 | $1.27B |
| Q4 2021 | 158 | $1.18B |
| Q3 2021 | 156 | $1.15B |
| Q2 2021 | 161 | $1.19B |
| Q1 2021 | 165 | $1.28B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Westamerica Bancorporation; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,449,335 | $179.9M | 0.00% | −50,453−1.4% | Reduced |
| American Century Companies Inc | 1,906,870 | $99.4M | 0.05% | +72,093+3.9% | Added |
| Vanguard Portfolio Management LLC | 1,759,550 | $91.8M | 0.00% | +1,759,550 | New |
| State Street Corp | 1,203,283 | $62.8M | 0.00% | −18,096−1.5% | Reduced |
| Vanguard Capital Management LLC | 1,095,078 | $57.1M | 0.00% | +1,095,078 | New |
| Dimensional Fund Advisors LP | 944,699 | $49.3M | 0.01% | +47,127+5.3% | Added |
| Geode Capital Management, LLC | 613,162 | $32.0M | 0.00% | +6,695+1.1% | Added |
| AQR Capital Management LLC | 399,046 | $20.8M | 0.01% | +17,214+4.5% | Added |
| Nuveen, LLC | 359,345 | $18.7M | 0.01% | +4,455+1.3% | Added |
| Two Sigma Investments, LP | 353,032 | $18.4M | 0.02% | +167,331+90.1% | Added |
| Palisade Capital Management LLC | 304,954 | $15.9M | 0.53% | −13,643−4.3% | Reduced |
| Charles Schwab Investment Management Inc | 297,925 | $15.5M | 0.00% | −546−0.2% | Reduced |
| Northern Trust Corp | 288,977 | $15.1M | 0.00% | +1,508+0.5% | Added |
| Arrowstreet Capital, Limited Partnership | 283,809 | $14.8M | 0.01% | −11,579−3.9% | Reduced |
| Rbo & Co LLC | 282,198 | $14.7M | 2.38% | −4,642−1.6% | Reduced |
| Morgan Stanley | 255,156 | $13.3M | 0.00% | −39,613−13.4% | Reduced |
| Goldman Sachs Group Inc | 226,720 | $11.8M | 0.00% | −32,620−12.6% | Reduced |
| Bank of New York Mellon Corp | 209,513 | $10.9M | 0.00% | +962+0.5% | Added |
| T. Rowe Price Investment Management, Inc. | 195,842 | $10.2M | 0.01% | −43,139−18.1% | Reduced |
| Qube Research & Technologies Ltd | 171,380 | $8.94M | 0.01% | −57,102−25.0% | Reduced |
| Vanguard Fiduciary Trust Co | 159,933 | $8.34M | 0.00% | +159,933 | New |
| UBS Group AG | 159,861 | $8.34M | 0.00% | −297,345−65.0% | Reduced |
| Renaissance Technologies LLC | 152,431 | $7.95M | 0.01% | +56,900+59.6% | Added |
| Principal Financial Group Inc | 151,149 | $7.88M | 0.00% | +5,616+3.9% | Added |
| Leeward Investments, LLC - MA | 138,180 | $7.21M | 0.36% | −3,749−2.6% | Reduced |
| Invesco Ltd. | 132,218 | $6.90M | 0.00% | +18,572+16.3% | Added |
| First Trust Advisors LP | 130,982 | $6.83M | 0.00% | +51,148+64.1% | Added |
| New York State Common Retirement Fund | 129,418 | $6.75M | 0.01% | 00.0% | Unchanged |
| Citadel Advisors LLC | 124,582 | $6.50M | 0.00% | −85,818−40.8% | Reduced |
| Jupiter Asset Management Ltd | 97,707 | $5.10M | 0.03% | −28,854−22.8% | Reduced |
| HRT Financial LP | 94,687 | $4.94M | 0.01% | +83,648+757.7% | Added |
| Public Sector Pension Investment Board | 88,107 | $4.59M | 0.01% | +1,801+2.1% | Added |
| Bank of America Corp | 86,384 | $4.50M | 0.00% | +28,009+48.0% | Added |
| Franklin Resources Inc | 85,098 | $4.44M | 0.00% | +74,038+669.4% | Added |
| Raymond James Financial Inc | 81,360 | $4.24M | 0.00% | +1,522+1.9% | Added |
| Man Group plc | 80,652 | $4.21M | 0.01% | +44,364+122.3% | Added |
| Rhumbline Advisers | 77,469 | $4.04M | 0.00% | −110.0% | Reduced |
| Jane Street Group, LLC | 69,358 | $3.62M | 0.00% | +2,634+3.9% | Added |
| Ieq Capital, LLC | 60,743 | $3.17M | 0.01% | +1,265+2.1% | Added |
| Maltese Capital Management LLC | 59,540 | $3.11M | 0.61% | −8,460−12.4% | Reduced |
| Legal & General Group Plc | 57,854 | $3.02M | 0.00% | −5,783−9.1% | Reduced |
| Millennium Management LLC | 56,201 | $2.93M | 0.00% | −283,808−83.5% | Reduced |
| Ameriprise Financial Inc | 49,996 | $2.61M | 0.00% | −4,375−8.0% | Reduced |
| Swiss National Bank | 46,900 | $2.45M | 0.00% | −900−1.9% | Reduced |
| Winton Group Ltd | 46,577 | $2.43M | 0.09% | +230+0.5% | Added |
| SG Americas Securities, LLC | 45,171 | $2.36M | 0.00% | +12,672+39.0% | Added |
| Jacobs Levy Equity Management, Inc | 44,291 | $2.31M | 0.01% | +5,154+13.2% | Added |
| UBS Asset Management Americas Inc | 43,500 | $2.27M | 0.00% | +775+1.8% | Added |
| Royce & Associates LP | 42,934 | $2.24M | 0.02% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 40,026 | $2.09M | 0.00% | +16,519+70.3% | Added |
| Trexquant Investment LP | 38,052 | $1.98M | 0.01% | −17,866−32.0% | Reduced |
| Commonwealth Equity Services, LLC | 36,357 | $1.90M | 0.00% | −1,398−3.7% | Reduced |
| Price T Rowe Associates Inc | 36,184 | $1.89M | 0.00% | +3,007+9.1% | Added |
| Voya Investment Management LLC | 35,429 | $1.85M | 0.00% | −217−0.6% | Reduced |
| Assenagon Asset Management S.A. | 35,192 | $1.84M | 0.00% | +35,192 | New |
| JPMorgan Chase & Co | 35,321 | $1.82M | 0.00% | −51,128−59.1% | Reduced |
| State of Tennessee, Treasury Department | 32,041 | $1.67M | 0.01% | +21,418+201.6% | Added |
| Dark Forest Capital Management LP | 30,274 | $1.58M | 0.14% | −33,613−52.6% | Reduced |
| LPL Financial LLC | 27,192 | $1.42M | 0.00% | +1,334+5.2% | Added |
| Alliancebernstein L.P. | 29,520 | $1.41M | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 26,300 | $1.37M | 0.00% | +1,348+5.4% | Added |
| Cerity Partners LLC | 26,176 | $1.37M | 0.00% | +1,606+6.5% | Added |
| Prudential Financial Inc | 25,652 | $1.34M | 0.00% | +2,240+9.6% | Added |
| Deutsche Bank AG | 25,021 | $1.30M | 0.00% | +2,434+10.8% | Added |
| Point72 Asset Management, L.P. | 23,670 | $1.23M | 0.00% | −48,300−67.1% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 22,817 | $1.19M | 0.00% | −4,042−15.0% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 22,713 | $1.18M | 0.00% | 00.0% | Unchanged |
| Great West Life Assurance Co | 21,852 | $1.14M | 0.00% | −1,996−8.4% | Reduced |
| Cypress Wealth Services, LLC | 21,775 | $1.14M | 0.16% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 20,229 | $1.05M | 0.00% | +20,229 | New |
| Mariner, LLC | 20,193 | $1.05M | 0.00% | +2,381+13.4% | Added |
| XTX Topco Ltd | 19,667 | $1.03M | 0.02% | +19,667 | New |
| Citigroup Inc | 19,095 | $995.8K | 0.00% | −3,400−15.1% | Reduced |
| California State Teachers Retirement System | 19,026 | $992.2K | 0.00% | −5,241−21.6% | Reduced |
| Edgestream Partners, L.P. | 17,007 | $886.9K | 0.03% | +17,007 | New |
| SEI Investments Co | 16,727 | $872.6K | 0.00% | −9,538−36.3% | Reduced |
| Thrivent Financial for Lutherans | 16,435 | $857.0K | 0.00% | −698−4.1% | Reduced |
| Rafferty Asset Management, LLC | 15,155 | $790.3K | 0.00% | −6,381−29.6% | Reduced |
| Royal Bank of Canada | 15,039 | $784.0K | 0.00% | +278+1.9% | Added |
| Vanguard Asset Management, Ltd | 14,676 | $765.4K | 0.00% | +14,676 | New |
| SummerHaven Investment Management, LLC | 14,368 | $749.3K | 0.46% | −2,065−12.6% | Reduced |
| Vanguard Global Advisers, LLC | 14,258 | $743.6K | 0.00% | +14,258 | New |
| Horizon Investments, LLC | 14,048 | $726.3K | 0.01% | +1,320+10.4% | Added |
| Wells Fargo & Company | 13,846 | $722.0K | 0.00% | −21,537−60.9% | Reduced |
| KLP Kapitalforvaltning AS | 13,700 | $714.5K | 0.00% | 00.0% | Unchanged |
| Wealth Enhancement Advisory Services, LLC | 13,546 | $702.1K | 0.00% | −107−0.8% | Reduced |
| State of Alaska, Department of Revenue | 13,203 | $687.0K | 0.01% | −601−4.4% | Reduced |
| Stifel Financial Corp | 13,124 | $684.4K | 0.00% | +118+0.9% | Added |
| Illinois Municipal Retirement Fund | 12,973 | $676.5K | 0.01% | −745−5.4% | Reduced |
| MetLife Investment Management | 12,735 | $664.1K | 0.00% | −215,923−94.4% | Reduced |
| Barclays PLC | 12,435 | $648.5K | 0.00% | −33,092−72.7% | Reduced |
| Engineers Gate Manager LP | 12,243 | $638.5K | 0.01% | +1,751+16.7% | Added |
| Odyssean, LLC | 12,167 | $634.5K | 0.23% | +12,167 | New |
| Hennion & Walsh Asset Management, Inc. | 12,106 | $631.3K | 0.02% | +1,504+14.2% | Added |
| HSBC Holdings PLC | 11,945 | $623.5K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 11,840 | $617.4K | 0.00% | −18,495−61.0% | Reduced |
| Janus Henderson Group PLC | 11,748 | $612.8K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 11,146 | $581.3K | 0.00% | −106−0.9% | Reduced |
| Mercer Global Advisors Inc | 11,073 | $577.5K | 0.00% | +1,442+15.0% | Added |
| Louisiana State Employees Retirement System | 10,900 | $568.4K | 0.01% | −500−4.4% | Reduced |