Marshall Wace
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Marshall Wace’s Westamerica Bancorp WABC Stock Holding History

Marshall Wace’s Portfolio WABC Stock Details WABC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$412K Sell
7,900
-3,228
-29% -$164K ﹤0.01% 2532
2025
Q4 		$532K Buy
+11,128
New +$534K ﹤0.01% 2215
2025
Q3 		– Sell
-19,455
Closed -$942K – 3462
2025
Q2 		$942K Buy
+19,455
New +$932K ﹤0.01% 1879
2023
Q4 		– Sell
-15,809
Closed -$684K – 2651
2023
Q3 		$684K Sell
15,809
-87,839
-85% -$3.93M ﹤0.01% 1618
2023
Q2 		$3.97M Buy
103,648
+8,742
+9% +$350K 0.01% 1120
2023
Q1 		$4.2M Sell
94,906
-38,208
-29% -$2.05M 0.01% 1082
2022
Q4 		$7.86M Buy
133,114
+76,635
+136% +$4.5M 0.02% 934
2022
Q3 		$2.95M Buy
56,479
+21,561
+62% +$1.23M 0.01% 1759
2022
Q2 		$1.94M Buy
+34,918
New +$2.05M ﹤0.01% 2020
2021
Q4 		– Sell
-15,817
Closed -$890K – 4316
2021
Q3 		$890K Buy
+15,817
New +$889K ﹤0.01% 2090
2021
Q2 		– Sell
-61,985
Closed -$3.89M – 3136
2021
Q1 		$3.89M Sell
61,985
-49,006
-44% -$2.98M 0.02% 974
2020
Q4 		$6.14M Sell
110,991
-8,316
-7% -$458K 0.03% 498
2020
Q3 		$6.48M Sell
119,307
-663
-0.6% -$38.8K 0.04% 429
2020
Q2 		$6.89M Buy
+119,970
New +$6.98M 0.05% 388
2015
Q3 		– Sell
-22,000
Closed -$1.11M – 1076
2015
Q2 		$1.11M Buy
+22,000
New +$1.01M 0.01% 582
2014
Q3 		– Sell
-5,000
Closed -$261K – 1058
2014
Q2 		$261K Buy
+5,000
New +$255K ﹤0.01% 790

Other funds holding WABC

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Marshall Wace's WABC Position: Q1 2026 in Review

Marshall Wace reduced its Westamerica Bancorp (WABC) stake by 29% in Q1 2026, selling an estimated $164K and leaving 7,900 shares worth $412K. The position accounts for ﹤0.01% of the portfolio, ranked #2532.

Marshall Wace first reported a position in WABC in Q2 2014 and has held it in 16 quarters since. The position peaked at $7.86M in Q4 2022. 204 funds tracked by Wall St. Rank hold WABC as of Q1 2026.

  • Marshall Wace held 7,900 shares of Westamerica Bancorp worth $412K as of Q1 2026.
  • Marshall Wace sold 3,228 Westamerica Bancorp shares in Q1 2026, an estimated $164K.
  • Westamerica Bancorp made up ﹤0.01% of Marshall Wace's portfolio in Q1 2026, its #2532 holding.
  • Marshall Wace first reported a position in Westamerica Bancorp in Q2 2014 and has held it in 16 quarters since.
  • Marshall Wace's Westamerica Bancorp position peaked at $7.86M in Q4 2022.
  • 204 funds tracked by Wall St. Rank held Westamerica Bancorp as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.