Westamerica Bancorporation WABC Institutional Ownership

NASDAQ WABC

$61.92 +1.10 (+1.81%)

At close: Oct 22, 2026 · 4:00 PM EDT

Institutions by Trading Activity

213 Institutions

Increased 106 49.8%

Unchanged 37 17.4%

Reduced 70 32.9%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

79.15%

▲+2.84 pp QoQ

Shares Held by Institutions

18.45Mn

of 23.31Mn outstanding

▼-0.54% QoQ

Shares Outstanding

23.31Mn

4.86Mn held outside 13F filers

Institutional Investors

213

filed 13F for Jun 2026

▲+10 vs prior quarter

Net Shares Added (QoQ)

-100.11K

distributed since last quarter

Value of Holdings

$1.12Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Westamerica Bancorporation (NASDAQ:WABC) had 213 institutional holders reporting a position on Form 13F for the quarter ended June 30, 2026.

Collectively, these holders controlled 79.15% of Westamerica Bancorporation's outstanding shares in Q2 2026, up from 76.30% in Q1 2026.
Total holdings of WABC shares fell 0.54% from Q1 2026, and the holder count rose 4.93% from Q2 2025.
Of the 213 holders, 106 added to their positions, 70 reduced their stakes and 37 left their positions unchanged in Q2 2026.
The aggregate institutional position in Westamerica Bancorporation was 18.45Mn shares at the end of Q2 2026, down 100.11K from the prior quarter and down 1.07Mn from a year earlier.
BlackRock, Inc. held the largest position in WABC at 3.34Mn shares as of June 30, 2026, or 14.31% of shares outstanding.
Holders that added the most shares of Westamerica Bancorporation in Q2 2026 were State Street Corp (+190.79K shares), AQR Capital Management LLC (+96.18K shares), American Century Companies Inc (+51.2K shares), Arrowstreet Capital, Limited Partnership (+40.38K shares) and Dimensional Fund Advisors LP (+38.94K shares).
On the other side, among holders that kept a position in Westamerica Bancorporation, the largest reductions in Q2 2026 came from BlackRock, Inc. (-113.63K shares), Renaissance Technologies LLC (-79.93K shares), Qube Research & Technologies Ltd (-62.08K shares), Vanguard Capital Management LLC (-60.55K shares) and Two Sigma Investments, LP (-49.2K shares).
Westamerica Bancorporation's 10 largest institutional shareholders as of Q2 2026 were BlackRock, Inc. (3.34Mn shares), American Century Companies Inc (1.96Mn shares), Vanguard Portfolio Management LLC (1.72Mn shares), State Street Corp (1.39Mn shares), Vanguard Capital Management LLC (1.03Mn shares), Dimensional Fund Advisors LP (983.64K shares), Geode Capital Management, LLC (627.07K shares), AQR Capital Management LLC (495.22K shares), Nuveen, LLC (382.29K shares) and Rhino Investment Partners, Inc (324.82K shares), per Business Quant data.

Form 13F Holdings

213 Institutional Holders

Report period 30 Jun, 2026

Total shares held 18.45Mn

Of outstanding 79.15%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	3,335,703	14.31%	▼113,632	-3.29%	$195.71Mn
2	AMERICAN CENTURY COMPANIES INC	0000748054	1,958,072	8.40%	▲51,202	+2.69%	$114.88Mn
3	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,720,645	7.38%	▼38,905	-2.21%	$100.95Mn
4	State Street Corp	0000093751	1,394,074	5.98%	▲190,791	+15.86%	$81.79Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,034,531	4.44%	▼60,547	-5.53%	$60.70Mn
6	DIMENSIONAL FUND ADVISORS LP	0000354204	983,639	4.22%	▲38,940	+4.12%	$57.71Mn
7	GEODE CAPITAL MANAGEMENT, LLC	0001214717	627,073	2.69%	▲13,911	+2.27%	$36.80Mn
8	AQR CAPITAL MANAGEMENT LLC	0001167557	495,223	2.12%	▲96,177	+24.10%	$29.05Mn
9	Nuveen, LLC	0001871926	382,288	1.64%	▲22,943	+6.38%	$22.43Mn
10	Rhino Investment Partners, Inc	0001828776	324,824	1.39%	▲324,824	0.00%	$19.06Mn
11	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	324,191	1.39%	▲40,382	+14.23%	$19.02Mn
12	TWO SIGMA INVESTMENTS, LP	0001179392	303,836	1.30%	▼49,196	-13.94%	$17.83Mn
13	Northern Trust Corp	0000073124	303,422	1.30%	▲14,445	+5.00%	$17.80Mn
14	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	294,930	1.27%	▼2,995	-1.01%	$17.30Mn
15	RBO & CO LLC	0001162827	275,551	1.18%	▼6,647	-2.36%	$16.17Mn
16	MACKENZIE FINANCIAL CORP	0000919859	242,861	1.04%	▲242,861	0.00%	$14.25Mn
17	Morgan Stanley	0000895421	229,998	0.99%	▼25,158	-9.86%	$13.49Mn
18	Goldman Sachs Group Inc	0000886982	228,465	0.98%	▲1,745	+0.77%	$13.40Mn
19	Bank of New York Mellon Corp	0001390777	211,466	0.91%	▲1,953	+0.93%	$12.41Mn
20	T. Rowe Price Investment Management, Inc.	0001897612	193,995	0.83%	▼1,847	-0.94%	$11.38K

Showing 1 to 20 of 213 holders