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WABC

Westamerica Bancorporation

Company with tickers: WABC

CIK
311094
CUSIP
957090103
Shares Outstanding
23,487,955
Price History Institutional Holders Short Volume Short Interest Fails to Deliver Financials SEC Filings Earnings Calls Insider Trades Congressional Trades
Holders: 194
Total Value: $785,589,976
Total Shares: 15,064,048
Showing 1–100 of 195 holdings by value · page 1 of 2

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 194 13F filers · Δ vs Dec 31, 2025
Top Holder
22.9%
+5.5 pts
Top 5
53.9%
+0.5 pts
Top 10
65.3%
+0.7 pts
HHI
858
Broadly held +109

Quarterly Activity

vs Dec 31, 2025
New
188
Increased
2
Decreased
2
Sold Out
210
Unchanged
2
Holder count: -22
Institutional value: -14.7%
Shares held: -21.7%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds
Mid Hennion & Walsh Asset Management, Inc. +1,504 12,106
Large Rockefeller Capital Management L.P. +6 15

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds
Mega GOLDMAN SACHS GROUP INC −32,620 226,720
Small Essential Partners LLC −10 519

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD)
Mega BlackRock, Inc. 3,449,335 $179,882,816
Mega AMERICAN CENTURY COMPANIES INC 1,906,870 $99,443,270
Mega STATE STREET CORP 1,203,283 $62,751,208
Mega DIMENSIONAL FUND ADVISORS LP 944,699 $49,266,051
Mega GEODE CAPITAL MANAGEMENT, LLC 613,162 $31,976,397

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD)
Mega BlackRock, Inc. 3,350,643 $160,261,250
Mega VANGUARD GROUP INC 2,975,047 $142,296,498
Mega AMERICAN CENTURY COMPANIES INC 1,834,777 $87,757,383
Mega STATE STREET CORP 1,221,379 $58,418,557
Mega DIMENSIONAL FUND ADVISORS LP 897,572 $42,930,866
100 of 100 shown
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Action
Mega BlackRock, Inc. $179,882,816 22.90% 3,449,335 View
Mega AMERICAN CENTURY COMPANIES INC $99,443,270 12.66% 1,906,870 View
Mega STATE STREET CORP $62,751,208 7.99% 1,203,283 View
Mega DIMENSIONAL FUND ADVISORS LP $49,266,051 6.27% 944,699 View
Mega GEODE CAPITAL MANAGEMENT, LLC $31,976,397 4.07% 613,162 View
Mega AQR CAPITAL MANAGEMENT LLC $20,810,245 2.65% 399,046 View
Mega Nuveen, LLC $18,739,840 2.39% 359,345 View
Mega TWO SIGMA INVESTMENTS, LP $18,410,618 2.34% 353,032 View
Mid PALISADE CAPITAL MANAGEMENT, LP $15,903,351 2.02% 304,954 View
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $15,536,788 1.98% 297,925 View
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $14,800,639 1.88% 283,809 View
Small RBO & CO LLC $14,716,625 1.87% 282,198 View
Mega GOLDMAN SACHS GROUP INC $11,823,447 1.51% 226,720 View
Mega Bank of New York Mellon Corp $10,926,101 1.39% 209,513 View
Mega T. Rowe Price Investment Management, Inc. $10,213,160 1.30% 195,842 View
Large Qube Research & Technologies Ltd $8,937,467 1.14% 171,380 View
Mega UBS Group AG $8,336,750 1.06% 159,861 View
Large RENAISSANCE TECHNOLOGIES LLC $7,949,276 1.01% 152,431 View
Mega PRINCIPAL FINANCIAL GROUP INC $7,882,420 1.00% 151,149 View
Mid Leeward Investments, LLC - MA $7,206,087 0.92% 138,180 View
Mega Invesco Ltd. $6,895,165 0.88% 132,218 View
Mega FIRST TRUST ADVISORS LP $6,830,711 0.87% 130,982 View
Large NEW YORK STATE COMMON RETIREMENT FUND $6,749,148 0.86% 129,418 View
Mega MORGAN STANLEY $6,579,085 0.84% 126,157 View
Mega CITADEL ADVISORS LLC $6,496,950 0.83% 124,582 View
Large JUPITER ASSET MANAGEMENT LTD $5,095,420 0.65% 97,707 View
Large HRT FINANCIAL LP $4,937,927 0.63% 94,687 View
Large Public Sector Pension Investment Board $4,594,780 0.58% 88,107 View
Mega BANK OF AMERICA CORP /DE/ $4,504,925 0.57% 86,384 View
Mega FRANKLIN RESOURCES INC $4,437,858 0.56% 85,098 View
Mega RAYMOND JAMES FINANCIAL INC $4,242,923 0.54% 81,360 View
Large Man Group plc $4,206,001 0.54% 80,652 View
Mega RHUMBLINE ADVISERS $4,040,008 0.51% 77,469 View
Mega JANE STREET GROUP, LLC $3,617,019 0.46% 69,358 View
Large IEQ CAPITAL, LLC $3,167,747 0.40% 60,743 View
Small MALTESE CAPITAL MANAGEMENT LLC $3,105,010 0.40% 59,540 View
Mega Legal & General Group Plc $3,017,084 0.38% 57,854 View
Mega MILLENNIUM MANAGEMENT LLC $2,930,882 0.37% 56,201 View
Mega AMERIPRISE FINANCIAL INC $2,607,291 0.33% 49,996 View
Mega Swiss National Bank $2,445,835 0.31% 46,900 View
Mid WINTON GROUP Ltd $2,428,990 0.31% 46,577 View
Large SG Americas Securities, LLC $2,355,667 0.30% 45,171 View
Large JACOBS LEVY EQUITY MANAGEMENT, INC $2,309,775 0.29% 44,291 View
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $2,268,522 0.29% 43,500 View
Mid ROYCE & ASSOCIATES LP $2,239,008 0.29% 42,934 View
Mega BNP PARIBAS ARBITRAGE, SA $2,087,355 0.27% 40,026 View
Large Trexquant Investment LP $1,984,411 0.25% 38,052 View
Large COMMONWEALTH EQUITY SERVICES, LLC $1,896,017 0.24% 36,357 View
Mega PRICE T ROWE ASSOCIATES INC /MD/ $1,886,995 0.24% 36,184 View
Large VOYA INVESTMENT MANAGEMENT LLC $1,847,622 0.24% 35,429 View
Mega JPMORGAN CHASE & CO $1,841,988 0.23% 35,321 View
Large Assenagon Asset Management S.A. $1,835,262 0.23% 35,192 View
Large State of Tennessee, Department of Treasury $1,670,938 0.21% 32,041 View
Mid DARK FOREST CAPITAL MANAGEMENT LP $1,578,789 0.20% 30,274 View
Mega ALLIANCEBERNSTEIN L.P. $1,539,468 0.20% 29,520 View
Mega LPL Financial LLC $1,418,062 0.18% 27,192 View
Large CWM, LLC $1,371,545 0.17% 26,300 View
Large Cerity Partners LLC $1,365,078 0.17% 26,176 View
Large PRUDENTIAL FINANCIAL INC $1,337,751 0.17% 25,652 View
Mega DEUTSCHE BANK AG\ $1,304,845 0.17% 25,021 View
Large Point72 Asset Management, L.P. $1,234,390 0.16% 23,670 View
Large Connor, Clark & Lunn Investment Management Ltd. $1,189,906 0.15% 22,817 View
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND $1,184,482 0.15% 22,713 View
Large CANADA LIFE ASSURANCE Co $1,139,581 0.15% 21,852 View
Small Cypress Wealth Services, LLC $1,135,566 0.14% 21,775 View
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,054,942 0.13% 20,229 View
Large Mariner, LLC $1,053,064 0.13% 20,193 View
Mid XTX Topco Ltd $1,025,634 0.13% 19,667 View
Mega CITIGROUP INC $995,803 0.13% 19,095 View
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM $992,205 0.13% 19,026 View
Mid Edgestream Partners, L.P. $886,915 0.11% 17,007 View
Large SEI INVESTMENTS CO $872,312 0.11% 16,727 View
Large Thrivent Financial for Lutherans $857,085 0.11% 16,435 View
Large Rafferty Asset Management, LLC $790,333 0.10% 15,155 View
Mega ROYAL BANK OF CANADA $784,283 0.10% 15,039 View
Small SummerHaven Investment Management, LLC $749,291 0.10% 14,368 View
Mid Horizon Investments, LLC $732,603 0.09% 14,048 View
Mega WELLS FARGO & COMPANY/MN $722,067 0.09% 13,846 View
Large KLP KAPITALFORVALTNING AS $714,455 0.09% 13,700 View
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $706,423 0.09% 13,546 View
Mid State of Alaska, Department of Revenue $688,536 0.09% 13,203 View
Mid Illinois Municipal Retirement Fund $676,541 0.09% 12,973 View
Large MetLife Investment Management, LLC $664,130 0.08% 12,735 View
Mega BARCLAYS PLC $648,484 0.08% 12,435 View
Mid Engineers Gate Manager LP $638,472 0.08% 12,243 View
Small Odyssean, LLC $634,509 0.08% 12,167 View
Mid Hennion & Walsh Asset Management, Inc. $631,327 0.08% 12,106 View
Mega HSBC HOLDINGS PLC $622,931 0.08% 11,945 View
Mega FMR LLC $617,455 0.08% 11,840 View
Mega JANUS HENDERSON GROUP PLC $612,658 0.08% 11,748 View
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $599,725 0.08% 11,500 View
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. $581,263 0.07% 11,146 View
Large MERCER GLOBAL ADVISORS INC /ADV $577,456 0.07% 11,073 View
Mid Louisiana State Employees Retirement System $568,435 0.07% 10,900 View
Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC $558,995 0.07% 10,719 View
Mid Perigon Wealth Management, LLC $547,575 0.07% 10,500 View
Mid NORTHERN TRUST CORP $531,617 0.07% 10,194 View
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE $503,456 0.06% 9,654 View
Large Quantinno Capital Management LP $478,737 0.06% 9,180 View
Mega NEUBERGER BERMAN GROUP LLC $474,355 0.06% 9,096 View
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