$POWI

$49.33 +$1.95 (4.12%) Close

$POWI Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 55.9M shares outstanding

Who owns POWI?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 60.7%

BlackRock, Inc. 15.6% · Vanguard Portfolio Management LLC 9.3%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

372

+64 vs last qtr

Net shares bought

−902.1K

by institutions in Q2 2026

New / sold out

98 / 34

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Congress Asset Management Co NEW +930.1K
Massachusetts Financial Services Co /ma/ NEW +767.7K

Biggest sellers in Q2 2026

Neuberger Berman Group LLC −1.9M
Hudson Bay Capital Management LP SOLD OUT −1.0M

Who is planning to sell?

Notices of proposed sale, last 12 months

$32.5M

18 notices from 6 people

Shares covered

416.0K

0.74% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Balu & Mohini Balakrishnan Fam TR Officer $24.2M
Clifford J Walker Officer $3.39M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

−4.9%

−0.56% a year

Each share's claim on the business

+5.2%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$695M vs $285M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years78% 3–5 years5% 1–3 years3% Under 1 year14%

Quarterly turnover

13.3%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting POWI on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	8.7M	15.61%	+200.3K (+2.4%)	≤2021	0.0%
Shares held by quarter Peak holding8.7M (Q2'26) Change over 8 quarters+1.0M Share of the company15.610% BlackRock, Inc.'s full portfolio →
VP Vanguard Portfolio Management LLC	5.2M	9.29%	+214.4K (+4.3%)	≤2021	0.0%
Shares held by quarter Peak holding5.2M (Q2'26) Change over 8 quarters+5.2M Share of the company9.290% Vanguard Portfolio Management LLC's full portfolio →

BlackRock, Inc.

8.7M

% of company

15.61%

Change vs last qtr

+200.3K (+2.4%)

Held since

≤2021

Vanguard Portfolio Management LLC

5.2M

% of company

9.29%

Change vs last qtr

+214.4K (+4.3%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Power Integrations, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting POWI on Form N-PORT; together they hold 61.3% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Small-Cap ETF iShares Trust	$281M	3.4M	6.01%	0.25%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$148M	1.8M	3.17%	0.01%	June 30, 2026

iShares Core S&P Small-Cap ETF

iShares Trust

Position value

$281M

% of company

6.01%

% of the fund

0.25%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$148M

% of company

3.17%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Power Integrations, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
BB Balakrishnan Balu Insider	2.7M	4.75%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company4.750% Balakrishnan Balu's insider activity →
WC Walker Clifford Insider	141.8K	0.25%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.250% Walker Clifford's insider activity →

Balakrishnan Balu

Insider

2.7M

% of company

4.75%

Change vs last qtr

—

Held since

—

Walker Clifford

Insider

141.8K

% of company

0.25%

Change vs last qtr

—

Held since

—

17 more holders behind a free account

See every insider and 5%+ holder of Power Integrations, Inc..

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