Latest Period
Q1 2026
Security Snapshot
WESTAMERICA BANCORPORATION - Common Stock (WABC) Institutional Ownership
CUSIP: 957090103
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
203
Shares (Excl. Options)
18,545,296
Price
$52.15
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- Security type / class
- Equity / Common Stock
- Symbol
- WABC on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 18,545,296
- Total 13F value
- $966,975,393
- Portfolio coverage rank
- 0%
- Share change
- -1,118,104
- Value change
- -$56,371,839
- Number of holders
- 203
- Shares outstanding
- 24,210,720
- SEC-reported price per share
- $58.67
- Insider filing price
- $58.67
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- WABC - WESTAMERICA BANCORPORATION - Common Stock is tracked under CUSIP 957090103.
- 203 institutions reported positions in Q1 2026.
- 3 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 203 to 5 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $966,975,393 to $219,895.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 203 institutions filings for Q1 2026.
Security key
957090103
Latest holder period
Q1 2026
13F holders
203
13D/G owners
3
CIK / CUSIP context first
Open Q1 2026 holders
WABC full holder history
WESTAMERICA BANCORPORATION SEC filings
WESTAMERICA BANCORPORATION company facts
WESTAMERICA BANCORPORATION insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 957090103:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
3
Security
WABC
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | 7.3% | $92,468,782 | 1,773,131 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5.3% | $66,664,701 | 1,278,326 | Vanguard Capital Management | 31 Mar 2026 | |||
| STATE STREET CORP | 4.6% | -10% | $59,460,368 | -$6,164,219 | 1,227,759 | -9.4% | STATE STREET CORPORATION | 31 Mar 2025 |
As of 31 Mar 2026, 203 institutional investors reported holding 18,545,296 shares of WESTAMERICA BANCORPORATION - Common Stock (WABC). This represents 77% of the company’s total 24,210,720 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
63%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 14% | 3,449,335 | -1.4% | 0% | $179,882,820 |
| AMERICAN CENTURY COMPANIES INC | 7.9% | 1,906,870 | +3.9% | 0.05% | $99,443,352 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 7.3% | 1,759,550 | 0% | 0% | $91,760,533 |
| STATE STREET CORP | 5% | 1,203,283 | -1.5% | 0% | $62,751,208 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.5% | 1,095,078 | 0% | 0% | $57,108,318 |
| DIMENSIONAL FUND ADVISORS LP | 3.9% | 944,699 | +5.3% | 0.01% | $49,264,998 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.5% | 613,162 | +1.1% | 0% | $31,980,138 |
| AQR CAPITAL MANAGEMENT LLC | 1.6% | 399,046 | +4.5% | 0.01% | $20,810,261 |
| Nuveen, LLC | 1.5% | 359,345 | +1.3% | 0.01% | $18,739,843 |
| TWO SIGMA INVESTMENTS, LP | 1.5% | 353,032 | +90% | 0.02% | $18,410,619 |
| PALISADE CAPITAL MANAGEMENT, LP | 1.3% | 304,954 | -4.3% | 0.53% | $15,903,351 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.2% | 297,925 | -0.18% | 0% | $15,536,789 |
| NORTHERN TRUST CORP | 1.2% | 288,977 | +0.52% | 0% | $15,070,150 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.2% | 283,809 | -3.9% | 0.01% | $14,800,639 |
| RBO & CO LLC | 1.2% | 282,198 | -1.6% | 2.4% | $14,716,632 |
| MORGAN STANLEY | 1.1% | 255,156 | -13% | 0% | $13,306,395 |
| GOLDMAN SACHS GROUP INC | 0.94% | 226,720 | -13% | 0% | $11,823,448 |
| Bank of New York Mellon Corp | 0.87% | 209,513 | +0.46% | 0% | $10,926,118 |
| T. Rowe Price Investment Management, Inc. | 0.81% | 195,842 | -18% | 0.01% | $10,214,000 |
| Qube Research & Technologies Ltd | 0.71% | 171,380 | -25% | 0.01% | $8,937,467 |
| VANGUARD FIDUCIARY TRUST CO | 0.66% | 159,933 | 0% | 0% | $8,340,506 |
| UBS Group AG | 0.66% | 159,861 | -65% | 0% | $8,336,752 |
| RENAISSANCE TECHNOLOGIES LLC | 0.63% | 152,431 | +60% | 0.01% | $7,949,277 |
| PRINCIPAL FINANCIAL GROUP INC | 0.62% | 151,149 | +3.9% | 0% | $7,882,420 |
| Leeward Investments, LLC - MA | 0.57% | 138,180 | -2.6% | 0.36% | $7,206,087 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q1 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 3,748 | $219,895 | +$51,688 | $58.67 | 5 |
| 2026 Q1 | 18,545,296 | $966,975,393 | -$56,371,839 | $52.15 | 203 |
| 2025 Q4 | 19,827,394 | $948,411,286 | +$10,649,748 | $47.83 | 216 |
| 2025 Q3 | 19,605,356 | $980,013,004 | -$17,570,580 | $49.99 | 215 |
| 2025 Q2 | 19,978,414 | $967,766,386 | -$35,102,972 | $48.44 | 205 |
| 2025 Q1 | 20,668,549 | $1,046,434,326 | +$4,751,905 | $50.63 | 206 |
| 2024 Q4 | 20,554,507 | $1,078,278,539 | +$6,932,025 | $52.46 | 208 |
| 2024 Q3 | 20,454,311 | $1,010,808,255 | -$11,168,456 | $49.42 | 194 |
| 2024 Q2 | 20,623,552 | $1,000,890,119 | +$11,468,573 | $48.53 | 189 |
| 2024 Q1 | 20,410,929 | $997,570,509 | -$2,044,720 | $48.88 | 189 |
| 2023 Q4 | 20,331,462 | $1,146,897,272 | +$29,580,772 | $56.41 | 175 |
| 2023 Q3 | 19,946,052 | $862,668,962 | -$10,921,626 | $43.25 | 178 |
| 2023 Q2 | 20,229,099 | $775,041,638 | -$15,228,271 | $38.30 | 186 |
| 2023 Q1 | 20,560,782 | $910,749,285 | -$24,148,567 | $44.30 | 189 |
| 2022 Q4 | 20,992,918 | $1,238,722,258 | +$30,029,983 | $59.01 | 210 |
| 2022 Q3 | 20,864,128 | $1,091,250,637 | -$6,780,693 | $52.29 | 173 |
| 2022 Q2 | 20,966,280 | $1,167,033,727 | +$4,057,361 | $55.66 | 162 |
| 2022 Q1 | 20,983,190 | $1,269,549,290 | +$36,826,156 | $60.50 | 141 |
| 2021 Q4 | 20,379,940 | $1,176,403,948 | -$5,312,949 | $57.73 | 153 |
| 2021 Q3 | 20,443,207 | $1,149,933,215 | -$9,035,940 | $56.26 | 152 |
| 2021 Q2 | 20,581,473 | $1,194,315,298 | +$8,634,466 | $58.03 | 157 |
| 2021 Q1 | 20,420,965 | $1,282,167,067 | -$4,149,944 | $62.78 | 163 |
| 2020 Q4 | 20,510,169 | $1,134,230,373 | -$15,967,307 | $55.29 | 165 |
| 2020 Q3 | 20,831,733 | $1,132,296,568 | -$13,695,489 | $54.35 | 163 |
| 2020 Q2 | 21,041,763 | $1,208,285,666 | -$43,264,668 | $57.42 | 157 |