WESTAMERICA BANCORPORATION

Ticker: WABC CUSIP: 957090103 Class: Common Stock

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
BlackRock, Inc.3,499,788$167,395
VANGUARD GROUP INC3,170,769$151,658
AMERICAN CENTURY COMPANIES INC1,834,777$87,757
STATE STREET CORP1,221,379$58,419
DIMENSIONAL FUND ADVISORS LP897,572$42,932
GEODE CAPITAL MANAGEMENT, LLC606,467$29,013
UBS Group AG457,206$21,868
AQR CAPITAL MANAGEMENT LLC381,832$18,263
Nuveen, LLC354,890$16,974
MILLENNIUM MANAGEMENT LLC340,009$16,263
PALISADE CAPITAL MANAGEMENT, LP318,597$15,238
CHARLES SCHWAB INVESTMENT MANAGEMENT INC298,471$14,276
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP295,388$14,128
MORGAN STANLEY294,769$14,099
NORTHERN TRUST CORP287,469$13,750
RBO & CO LLC286,840$13,720
GOLDMAN SACHS GROUP INC259,340$12,404
MetLife Investment Management, LLC228,658$10,937
Qube Research & Technologies Ltd228,482$10,928
T. Rowe Price Investment Management, Inc.215,771$10
CITADEL ADVISORS LLC210,400$10,063
Bank of New York Mellon Corp208,551$9,975
TWO SIGMA INVESTMENTS, LP185,701$8,882
PRINCIPAL FINANCIAL GROUP INC145,533$6,961
Leeward Investments, LLC - MA141,929$6,788
NEW YORK STATE COMMON RETIREMENT FUND129,418$6,190
JUPITER ASSET MANAGEMENT LTD126,561$6,053
TWO SIGMA ADVISERS, LP120,900$5,783
Invesco Ltd.113,646$5,436
RENAISSANCE TECHNOLOGIES LLC95,531$4,569
JPMORGAN CHASE & CO86,449$4,135
Public Sector Pension Investment Board86,306$4,128
RAYMOND JAMES FINANCIAL INC79,838$3,819
FIRST TRUST ADVISORS LP79,834$3,818
RHUMBLINE ADVISERS77,480$3,706
Point72 Asset Management, L.P.71,970$3,442
MALTESE CAPITAL MANAGEMENT LLC68,000$3,252
JANE STREET GROUP, LLC66,724$3,191
DARK FOREST CAPITAL MANAGEMENT LP63,887$3,056
Legal & General Group Plc63,637$3,044
IEQ CAPITAL, LLC59,478$2,845
BANK OF AMERICA CORP /DE/58,375$2,792
Trexquant Investment LP55,918$2,675
AMERIPRISE FINANCIAL INC54,371$2,601
Brandywine Global Investment Management, LLC53,476$2,558
ALGERT GLOBAL LLC51,318$2
Y-Intercept (Hong Kong) Ltd50,526$2,417
Swiss National Bank47,800$2,286
WINTON GROUP Ltd46,347$2,217
BARCLAYS PLC45,527$2,178
ROYCE & ASSOCIATES LP42,934$2,054
UBS ASSET MANAGEMENT AMERICAS INC42,725$2,044
JACOBS LEVY EQUITY MANAGEMENT, INC39,137$1,872
Numerai GP LLC38,346$1,834
IFG Advisory, LLC37,972$1,816
COMMONWEALTH EQUITY SERVICES, LLC37,755$1,806
TUDOR INVESTMENT CORP ET AL36,665$1,754
NEW YORK STATE TEACHERS RETIREMENT SYSTEM36,624$2
Man Group plc36,288$1,736
Voya Investment Management LLC35,646$1,705
WELLS FARGO & COMPANY/MN35,383$1,692
PRICE T ROWE ASSOCIATES INC /MD/33,177$2
SG Americas Securities, LLC32,499$2
FMR LLC30,335$1,451
ALLIANCEBERNSTEIN L.P.29,520$1,412
AlphaQuest LLC28,550$1,366
Connor, Clark & Lunn Investment Management Ltd.26,859$1,285
SEI INVESTMENTS CO26,265$1,256
LPL Financial LLC25,858$1,237
CWM, LLC24,952$1
Cerity Partners LLC24,570$1,175
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM24,267$1,161
GREAT WEST LIFE ASSURANCE CO /CAN/23,848$1
BNP PARIBAS ARBITRAGE, SA23,507$1,124
PRUDENTIAL FINANCIAL INC23,412$1,120
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND22,713$1,086
DEUTSCHE BANK AG\22,587$1,080
CITIGROUP INC22,495$1,076
Cypress Wealth Services, LLC21,775$1,041
Rafferty Asset Management, LLC21,536$1,030
Mariner, LLC17,812$854
DENALI ADVISORS LLC17,800$851
Thrivent Financial for Lutherans17,133$1
Summit Global Investments16,666$1
SummerHaven Investment Management, LLC16,433$786
BALYASNY ASSET MANAGEMENT L.P.16,356$782
ROYAL BANK OF CANADA14,761$706
State of Alaska, Department of Revenue13,804$1
Illinois Municipal Retirement Fund13,718$656
KLP KAPITALFORVALTNING AS13,700$655
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC13,653$662
STIFEL FINANCIAL CORP13,006$622
Horizon Investments, LLC12,728$609
HSBC HOLDINGS PLC11,945$570
O'SHAUGHNESSY ASSET MANAGEMENT, LLC11,772$563
JANUS HENDERSON GROUP PLC11,748$561
Quantinno Capital Management LP11,600$555
Louisiana State Employees Retirement System11,400$545
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.11,252$538
MARSHALL WACE, LLP11,128$532
115 other institutions393,144$17,167
Total (215 institutions)19,803,664$923,332