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 |
|---|---|---|---|---|---|
| State Street Corp | 1,203,283 | $62.8M | 0.00% | −18,096−1.5% | Reduced |
| Vanguard Portfolio Management LLC | 1,759,550 | $91.8M | 0.00% | +1,759,550 | New |
| American Century Companies Inc | 1,906,870 | $99.4M | 0.05% | +72,093+3.9% | Added |
| BlackRock, Inc. | 3,449,335 | $179.9M | 0.00% | −50,453−1.4% | Reduced |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −120,900−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −51,318−100.0% | Sold out |
| Numerai GP LLC | 0 | $0 | 0.00% | −38,346−100.0% | Sold out |
| IFG Advisory, LLC | 0 | $0 | 0.00% | −37,972−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −36,665−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −28,550−100.0% | Sold out |
| Denali Advisors LLC | 0 | $0 | 0.00% | −17,800−100.0% | Sold out |
| Summit Global Investments | 0 | $0 | 0.00% | −16,666−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −16,356−100.0% | Sold out |
| Alps Advisors Inc | 0 | $0 | 0.00% | −9,461−100.0% | Sold out |
| D.A. Davidson & Co. | 0 | $0 | 0.00% | −7,459−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −7,329−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −6,500−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −6,414−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −6,034−100.0% | Sold out |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −5,709−100.0% | Sold out |
| FourThought Financial Partners, LLC | 0 | $0 | 0.00% | −5,040−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −4,847−100.0% | Sold out |
| Davy Global Fund Management Ltd | 0 | $0 | 0.00% | −4,835−100.0% | Sold out |
| ProShare Advisors LLC | 0 | $0 | 0.00% | −4,719−100.0% | Sold out |
| SummitTX Capital, L.P. | 0 | $0 | 0.00% | −4,587−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −2,794−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −2,681−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −1,490−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −119−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Dunhill Financial, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Brandywine Global Investment Management, LLC | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |