372 institutional investment managers reported POWI positions in their Form 13F filings for Q2 2026, holding 62,621,096 shares worth $5.2B in total. BlackRock, Inc. reported the largest position.

Are funds buying or selling POWI?

In Q2 2026, 94 managers opened new POWI positions, 113 added, 110 trimmed and 30 sold out. Managers that filed in both quarters sold a net 832,666 shares.

How current is this POWI institutional ownership data?

It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

Funds · POWI

Who owns POWI?

Institutional ownership of Power Integrations Inc. from Form 13F, Q2 2026

372 institutional managers reported holding Power Integrations Inc. (POWI) in Form 13F filings for Q2 2026, with 62,621,096 shares worth $5.2B. The largest reported holder was BlackRock, Inc. Managers that filed both quarters cut a net 832,666 shares (-1.3%). 94 opened new positions and 30 sold out.

Funds holding: 372
Value held: $5.2B
New / sold out: 94 / 30
Net shares, same filers: -1.3%

Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

Largest holders of POWI

Fund	Value	Share of 13F holdings	Shares	Move
BlackRock, Inc.	$731M	13.9%	8,722,053	Added
Vanguard Portfolio Management LLC	$435M	8.3%	5,190,284	Added
Wellington Management Group LLP	$301M	5.7%	3,595,855	Added
State Street Corp	$267M	5.1%	3,194,155	Added
Vanguard Capital Management LLC	$210M	4.0%	2,511,196	Added
William Blair Investment Management, LLC	$200M	3.8%	2,382,007	Unchanged
Neuberger Berman Group LLC	$169M	3.2%	2,020,390	Trimmed
Price T Rowe Associates Inc	$161M	3.1%	1,924,939	Added
Disciplined Growth Investors Inc	$158M	3.0%	1,891,864	Trimmed
Geode Capital Management, LLC	$151M	2.9%	1,803,038	Added
Snyder Capital Management L P	$148M	2.8%	1,766,507	Trimmed
Robeco Schweiz AG	$112M	2.1%	1,340,404	Added
Morgan Stanley	$99.9M	1.9%	1,192,455	Trimmed
Capital International Investors	$99.2M	1.9%	1,183,746	Added
Dimensional Fund Advisors LP	$90.9M	1.7%	1,085,077	Added
Nuveen, LLC	$85.4M	1.6%	1,020,059	Trimmed
Congress Asset Management Co	$77.9M	1.5%	930,059	New
Copeland Capital Management, LLC	$73.9M	1.4%	882,810	Trimmed
Boston Trust Walden Corp	$73.9M	1.4%	882,471	Added
Invesco Ltd.	$72.9M	1.4%	870,396	Added
JPMorgan Chase & Co	$69.6M	1.4%	879,254	Trimmed
American Century Companies Inc	$65.5M	1.2%	781,675	Added
Massachusetts Financial Services Co	$64.3M	1.2%	767,672	New
Northern Trust Corp	$64.0M	1.2%	764,474	Trimmed
Stephens Investment Management Group LLC	$63.3M	1.2%	755,549	Added

Share of 13F holdings is each fund's shares as a share of the 62,621,096 POWI shares all 13F filers reported, not of shares outstanding.

Biggest buyers in Q2 2026

Congress Asset Management Co New+$77.9M
Massachusetts Financial Services Co New+$64.3M
American Century Companies Inc Added+$63.2M
Invesco Ltd. Added+$49.4M
Price T Rowe Associates Inc Added+$44.3M
Robeco Schweiz AG Added+$39.4M
Aperture Investors, LLC New+$25.8M
Boston Trust Walden Corp Added+$25.5M
Ameriprise Financial Inc Added+$23.2M
Wellington Management Group LLP Added+$20.1M

Biggest sellers in Q2 2026

Neuberger Berman Group LLC Trimmed-$160M
Hudson Bay Capital Management LP Sold out-$51.2M
Copeland Capital Management, LLC Trimmed-$36.8M
JPMorgan Chase & Co Trimmed-$32.8M
Snyder Capital Management L P Trimmed-$28.3M
Morgan Stanley Trimmed-$25.9M
UBS Group AG Trimmed-$22.2M
Marshall Wace, LLP Sold out-$18.4M
Bank of America Corp Trimmed-$18.4M
Brown Advisory Inc Trimmed-$17.6M

The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $669M and sold $654M; 113 added and 110 trimmed.

Schedule 13D and 13G filings on POWI

Owners of more than 5% must file within days, so these can be newer than the 13F data.

2026-05-15WELLINGTON MANAGEMENT GROUP LLP SCHEDULE 13G filed by Power Integrations Inc.Schedule 13G
2026-02-09STATE STREET CORP SCHEDULE 13G filed by Power Integrations Inc.Schedule 13G
2025-11-10STATE STREET CORP SCHEDULE 13G filed by Power Integrations Inc.Schedule 13G

Questions about POWI ownership

Who owns POWI stock?: 372 institutional investment managers reported POWI positions in their Form 13F filings for Q2 2026, holding 62,621,096 shares worth $5.2B in total. BlackRock, Inc. reported the largest position.
Are funds buying or selling POWI?: In Q2 2026, 94 managers opened new POWI positions, 113 added, 110 trimmed and 30 sold out. Managers that filed in both quarters sold a net 832,666 shares.
How current is this POWI institutional ownership data?: It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to POWI by CUSIP. Options are left out. POWI news and filings · POWI insider trades · Top funds