Power Integrations POWI Institutional Ownership

NASDAQ POWI

$55.18 +0.34 (+0.62%)

At close: Aug 21, 2026 · 4:00 PM EDT

Institutions by Trading Activity

304 Institutions

Increased 170 55.9%

Unchanged 33 10.9%

Reduced 101 33.2%

Ownership Statistics

13F · as of 31 Mar, 2026

Institutional Ownership

114.74%

▲+8.01 pp QoQ

Shares Held by Institutions

63.69Mn

of 55.51Mn outstanding

▲+24.64% QoQ

Shares Outstanding

55.51Mn

-8.18Mn held outside 13F filers

Institutional Investors

304

filed 13F for Mar 2026

▲+15 vs prior quarter

Net Shares Added (QoQ)

+12.59Mn

accumulated since last quarter

Value of Holdings

$3.73Bn

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

Quarter ending 31 Mar, 2026

Power Integrations Inc (NASDAQ:POWI) showed up in the 13F filings of 304 institutional investors as of March 2026.

These investors collectively held 114.7% of Power Integrations's outstanding shares in March 2026, up from 106.7% in December 2025.
They increased total shares held in Power Integrations by 24.64% from last quarter, and the number of investors in POWI decreased 12.39% annually.
Of these 304 funds, 170 grew their exposure to Power Integrations, 101 cut back, and 33 maintained positions.
Altogether, these fund groups held 63.69Mn shares in POWI by March 2026, up by 12.59Mn shares quarter on quarter, and up 2.25Mn shares year over year.
As of March 31, 2026, BlackRock, Inc. held the largest stake in Power Integrations with 8.52Mn shares, accounting for 15.35% of total shares outstanding.
The largest buyers of Power Integrations for the quarter ending March 2026 were VANGUARD PORTFOLIO MANAGEMENT LLC (4.98Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.51Mn), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (2.38Mn), PRICE T ROWE ASSOCIATES INC /MD/ (1.4Mn), Hudson Bay Capital Management LP (1.0Mn).
Leading sellers of Power Integrations shares for the quarter ending March 2026 were M&T Bank Corp (758.26K), Goldman Sachs Group Inc (545.39K), VOLORIDGE INVESTMENT MANAGEMENT, LLC (432.57K), Jpmorgan Chase & Co (366.27K), Nomura Holdings Inc (328.79K).
Power Integrations's 10 largest shareholders as of March 2026 include BlackRock, Inc. (8.52Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (4.98Mn), Neuberger Berman Group LLC (3.93Mn), WELLINGTON MANAGEMENT GROUP LLP (3.36Mn), State Street Corp (3.08Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.51Mn), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (2.38Mn), SNYDER CAPITAL MANAGEMENT L P (2.1Mn), DISCIPLINED GROWTH INVESTORS INC /MN (1.96Mn), GEODE CAPITAL MANAGEMENT, LLC (1.67Mn) per Business Quant data.

Form 13F Holdings

304 Institutional Holders

Report period 31 Mar, 2026

Total shares held 63.69Mn

Of outstanding 114.74%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	8,521,749	15.35%	▲10,445	+0.12%	$436.31Mn
2	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	4,975,859	8.96%	▲4,975,859	0.00%	$254.76Mn
3	Neuberger Berman Group LLC	0001465109	3,933,099	7.09%	▼39,958	-1.01%	$201.37Mn
4	WELLINGTON MANAGEMENT GROUP LLP	0000902219	3,356,153	6.05%	▲932,181	+38.46%	$171.84Mn
5	State Street Corp	0000093751	3,077,843	5.55%	▼323,127	-9.50%	$157.59Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,506,919	4.52%	▲2,506,919	0.00%	$128.35Mn
7	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	0001644956	2,380,677	4.29%	▲2,380,677	0.00%	$121.89Mn
8	SNYDER CAPITAL MANAGEMENT L P	0001050477	2,104,063	3.79%	▲39,356	+1.91%	$107.73Mn
9	DISCIPLINED GROWTH INVESTORS INC /MN	0001050442	1,959,172	3.53%	▼42,526	-2.12%	$100.31Mn
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,674,825	3.02%	▲71,142	+4.44%	$85.76Mn
11	Morgan Stanley	0000895421	1,501,960	2.71%	▲22,405	+1.51%	$76.90Mn
12	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	1,396,483	2.52%	▲1,396,483	0.00%	$71.50K
13	Copeland Capital Management, LLC	0001541743	1,321,789	2.38%	▲147,882	+12.60%	$67.68Mn
14	Jpmorgan Chase & Co	0000019617	1,293,375	2.33%	▼366,268	-22.07%	$61.93Mn
15	Capital International Investors	0001562230	1,112,390	2.00%	▼151,979	-12.02%	$56.95Mn
16	DIMENSIONAL FUND ADVISORS LP	0000354204	1,057,155	1.90%	▲71,928	+7.30%	$54.11Mn
17	Nuveen, LLC	0001871926	1,048,153	1.89%	▲914,908	+686.64%	$53.67Mn
18	Hudson Bay Capital Management LP	0001393825	1,000,000	1.80%	▲1,000,000	0.00%	$51.20Mn
19	Westwood Holdings Group Inc	0001165002	873,035	1.57%	▼164,482	-15.85%	$44.70Mn
20	Robeco Schweiz AG	0001418427	870,170	1.57%	▲242,696	+38.68%	$44.55Mn

Showing 1 to 20 of 304 holders