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 |
|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | 9,654 | $503.5K | 0.00% | −697−6.7% | Reduced |
| CWM Advisors, LLC | 9,851 | $513.7K | 0.03% | +73+0.7% | Added |
| Perigon Wealth Management, LLC | 10,500 | $547.6K | 0.01% | −256−2.4% | Reduced |
| O'Shaughnessy Asset Management, LLC | 10,719 | $559.0K | 0.00% | −1,053−8.9% | Reduced |
| Louisiana State Employees Retirement System | 10,900 | $568.4K | 0.01% | −500−4.4% | Reduced |
| Mercer Global Advisors Inc | 11,073 | $577.5K | 0.00% | +1,442+15.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 11,146 | $581.3K | 0.00% | −106−0.9% | Reduced |
| Janus Henderson Group PLC | 11,748 | $612.8K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 11,840 | $617.4K | 0.00% | −18,495−61.0% | Reduced |
| HSBC Holdings PLC | 11,945 | $623.5K | 0.00% | 00.0% | Unchanged |
| Hennion & Walsh Asset Management, Inc. | 12,106 | $631.3K | 0.02% | +1,504+14.2% | Added |
| Odyssean, LLC | 12,167 | $634.5K | 0.23% | +12,167 | New |
| Engineers Gate Manager LP | 12,243 | $638.5K | 0.01% | +1,751+16.7% | Added |
| Barclays PLC | 12,435 | $648.5K | 0.00% | −33,092−72.7% | Reduced |
| MetLife Investment Management | 12,735 | $664.1K | 0.00% | −215,923−94.4% | Reduced |
| Illinois Municipal Retirement Fund | 12,973 | $676.5K | 0.01% | −745−5.4% | Reduced |
| Stifel Financial Corp | 13,124 | $684.4K | 0.00% | +118+0.9% | Added |
| State of Alaska, Department of Revenue | 13,203 | $687.0K | 0.01% | −601−4.4% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 13,546 | $702.1K | 0.00% | −107−0.8% | Reduced |
| KLP Kapitalforvaltning AS | 13,700 | $714.5K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 13,846 | $722.0K | 0.00% | −21,537−60.9% | Reduced |
| Horizon Investments, LLC | 14,048 | $726.3K | 0.01% | +1,320+10.4% | Added |
| Vanguard Global Advisers, LLC | 14,258 | $743.6K | 0.00% | +14,258 | New |
| SummerHaven Investment Management, LLC | 14,368 | $749.3K | 0.46% | −2,065−12.6% | Reduced |
| Vanguard Asset Management, Ltd | 14,676 | $765.4K | 0.00% | +14,676 | New |
| Royal Bank of Canada | 15,039 | $784.0K | 0.00% | +278+1.9% | Added |
| Rafferty Asset Management, LLC | 15,155 | $790.3K | 0.00% | −6,381−29.6% | Reduced |
| Thrivent Financial for Lutherans | 16,435 | $857.0K | 0.00% | −698−4.1% | Reduced |
| SEI Investments Co | 16,727 | $872.6K | 0.00% | −9,538−36.3% | Reduced |
| Edgestream Partners, L.P. | 17,007 | $886.9K | 0.03% | +17,007 | New |
| California State Teachers Retirement System | 19,026 | $992.2K | 0.00% | −5,241−21.6% | Reduced |
| Citigroup Inc | 19,095 | $995.8K | 0.00% | −3,400−15.1% | Reduced |
| XTX Topco Ltd | 19,667 | $1.03M | 0.02% | +19,667 | New |
| Mariner, LLC | 20,193 | $1.05M | 0.00% | +2,381+13.4% | Added |
| Susquehanna International Group, LLP | 20,229 | $1.05M | 0.00% | +20,229 | New |
| Cypress Wealth Services, LLC | 21,775 | $1.14M | 0.16% | 00.0% | Unchanged |
| Great West Life Assurance Co | 21,852 | $1.14M | 0.00% | −1,996−8.4% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 22,713 | $1.18M | 0.00% | 00.0% | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. | 22,817 | $1.19M | 0.00% | −4,042−15.0% | Reduced |
| Point72 Asset Management, L.P. | 23,670 | $1.23M | 0.00% | −48,300−67.1% | Reduced |
| Deutsche Bank AG | 25,021 | $1.30M | 0.00% | +2,434+10.8% | Added |
| Prudential Financial Inc | 25,652 | $1.34M | 0.00% | +2,240+9.6% | Added |
| Cerity Partners LLC | 26,176 | $1.37M | 0.00% | +1,606+6.5% | Added |
| CWM, LLC | 26,300 | $1.37M | 0.00% | +1,348+5.4% | Added |
| Alliancebernstein L.P. | 29,520 | $1.41M | 0.00% | 00.0% | Unchanged |
| LPL Financial LLC | 27,192 | $1.42M | 0.00% | +1,334+5.2% | Added |
| Dark Forest Capital Management LP | 30,274 | $1.58M | 0.14% | −33,613−52.6% | Reduced |
| State of Tennessee, Treasury Department | 32,041 | $1.67M | 0.01% | +21,418+201.6% | Added |
| JPMorgan Chase & Co | 35,321 | $1.82M | 0.00% | −51,128−59.1% | Reduced |
| Assenagon Asset Management S.A. | 35,192 | $1.84M | 0.00% | +35,192 | New |
| Voya Investment Management LLC | 35,429 | $1.85M | 0.00% | −217−0.6% | Reduced |
| Price T Rowe Associates Inc | 36,184 | $1.89M | 0.00% | +3,007+9.1% | Added |
| Commonwealth Equity Services, LLC | 36,357 | $1.90M | 0.00% | −1,398−3.7% | Reduced |
| Trexquant Investment LP | 38,052 | $1.98M | 0.01% | −17,866−32.0% | Reduced |
| BNP Paribas Arbitrage, SA | 40,026 | $2.09M | 0.00% | +16,519+70.3% | Added |
| Royce & Associates LP | 42,934 | $2.24M | 0.02% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 43,500 | $2.27M | 0.00% | +775+1.8% | Added |
| Jacobs Levy Equity Management, Inc | 44,291 | $2.31M | 0.01% | +5,154+13.2% | Added |
| SG Americas Securities, LLC | 45,171 | $2.36M | 0.00% | +12,672+39.0% | Added |
| Winton Group Ltd | 46,577 | $2.43M | 0.09% | +230+0.5% | Added |
| Swiss National Bank | 46,900 | $2.45M | 0.00% | −900−1.9% | Reduced |
| Ameriprise Financial Inc | 49,996 | $2.61M | 0.00% | −4,375−8.0% | Reduced |
| Millennium Management LLC | 56,201 | $2.93M | 0.00% | −283,808−83.5% | Reduced |
| Legal & General Group Plc | 57,854 | $3.02M | 0.00% | −5,783−9.1% | Reduced |
| Maltese Capital Management LLC | 59,540 | $3.11M | 0.61% | −8,460−12.4% | Reduced |
| Ieq Capital, LLC | 60,743 | $3.17M | 0.01% | +1,265+2.1% | Added |
| Jane Street Group, LLC | 69,358 | $3.62M | 0.00% | +2,634+3.9% | Added |
| Rhumbline Advisers | 77,469 | $4.04M | 0.00% | −110.0% | Reduced |
| Man Group plc | 80,652 | $4.21M | 0.01% | +44,364+122.3% | Added |
| Raymond James Financial Inc | 81,360 | $4.24M | 0.00% | +1,522+1.9% | Added |
| Franklin Resources Inc | 85,098 | $4.44M | 0.00% | +74,038+669.4% | Added |
| Bank of America Corp | 86,384 | $4.50M | 0.00% | +28,009+48.0% | Added |
| Public Sector Pension Investment Board | 88,107 | $4.59M | 0.01% | +1,801+2.1% | Added |
| HRT Financial LP | 94,687 | $4.94M | 0.01% | +83,648+757.7% | Added |
| Jupiter Asset Management Ltd | 97,707 | $5.10M | 0.03% | −28,854−22.8% | Reduced |
| Citadel Advisors LLC | 124,582 | $6.50M | 0.00% | −85,818−40.8% | Reduced |
| New York State Common Retirement Fund | 129,418 | $6.75M | 0.01% | 00.0% | Unchanged |
| First Trust Advisors LP | 130,982 | $6.83M | 0.00% | +51,148+64.1% | Added |
| Invesco Ltd. | 132,218 | $6.90M | 0.00% | +18,572+16.3% | Added |
| Leeward Investments, LLC - MA | 138,180 | $7.21M | 0.36% | −3,749−2.6% | Reduced |
| Principal Financial Group Inc | 151,149 | $7.88M | 0.00% | +5,616+3.9% | Added |
| Renaissance Technologies LLC | 152,431 | $7.95M | 0.01% | +56,900+59.6% | Added |
| UBS Group AG | 159,861 | $8.34M | 0.00% | −297,345−65.0% | Reduced |
| Vanguard Fiduciary Trust Co | 159,933 | $8.34M | 0.00% | +159,933 | New |
| Qube Research & Technologies Ltd | 171,380 | $8.94M | 0.01% | −57,102−25.0% | Reduced |
| T. Rowe Price Investment Management, Inc. | 195,842 | $10.2M | 0.01% | −43,139−18.1% | Reduced |
| Bank of New York Mellon Corp | 209,513 | $10.9M | 0.00% | +962+0.5% | Added |
| Goldman Sachs Group Inc | 226,720 | $11.8M | 0.00% | −32,620−12.6% | Reduced |
| Morgan Stanley | 255,156 | $13.3M | 0.00% | −39,613−13.4% | Reduced |
| Rbo & Co LLC | 282,198 | $14.7M | 2.38% | −4,642−1.6% | Reduced |
| Arrowstreet Capital, Limited Partnership | 283,809 | $14.8M | 0.01% | −11,579−3.9% | Reduced |
| Northern Trust Corp | 288,977 | $15.1M | 0.00% | +1,508+0.5% | Added |
| Charles Schwab Investment Management Inc | 297,925 | $15.5M | 0.00% | −546−0.2% | Reduced |
| Palisade Capital Management LLC | 304,954 | $15.9M | 0.53% | −13,643−4.3% | Reduced |
| Two Sigma Investments, LP | 353,032 | $18.4M | 0.02% | +167,331+90.1% | Added |
| Nuveen, LLC | 359,345 | $18.7M | 0.01% | +4,455+1.3% | Added |
| AQR Capital Management LLC | 399,046 | $20.8M | 0.01% | +17,214+4.5% | Added |
| Geode Capital Management, LLC | 613,162 | $32.0M | 0.00% | +6,695+1.1% | Added |
| Dimensional Fund Advisors LP | 944,699 | $49.3M | 0.01% | +47,127+5.3% | Added |
| Vanguard Capital Management LLC | 1,095,078 | $57.1M | 0.00% | +1,095,078 | New |