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POWI · Power Integrations Inc · Shareholders & Ownership

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$48.24 +1.27 (+2.70%)
Market Cap
$2.62B
Shares
55.87M
Volume · Oct 21 363.57K Avg daily vol (3M) 744.47K

Every disclosed holder of POWI in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns POWI

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group Shares % Out
Institutional (13F) 62,335,635 111.57%
Insiders (Forms 3, 4, 5) 1,078,962 1.93%
13D/G-only blocks 0 0.00%
Remaining 7,541,299 -13.50%
Registered funds (N-PORT, not summed) 33,409,913 59.80%

Shares outstanding: 55,873,298, the issuer's latest cover-page count restated onto today's split basis.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of POWI

# Holder Shares
1
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
8,722,053
1.1
iShares Core S&P Small-Cap ETF
Fund S000004313 · Registered fund · Jun 30, 2026
iShares Trust, not summed
3,356,984
1.2
iShares Russell 2000 ETF
Fund S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
1,439,277
1.3
iShares Russell 2000 Growth ETF
Fund S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
517,645
1.4
iShares S&P Small-Cap 600 Value ETF
Fund S000004316 · Registered fund · Jun 30, 2026
iShares Trust, not summed
479,687
1.5
Master Small Cap Index Series
Fund S000002716 · Registered fund · Jun 30, 2026
Quantitative Master Series LLC, not summed
103,340
2
VANGUARD PORTFOLIO MANAGEMENT LLC
13F CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
5,190,284
3
WELLINGTON MANAGEMENT GROUP LLP
13F CIK 902219 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
3,595,855
4
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
3,194,155
4.1
State Street(R) SPDR(R) S&P(R) Semiconductor ETF
Fund S000010020 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
982,120
4.2
State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF
Fund S000041317 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
509,891
4.3
State Street(R) SPDR(R) S & P 600(TM) Small Cap Value ETF
Fund S000006974 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
290,313
4.4
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
18,922
4.5
State Street(R) SPDR(R) Portfolio S&P 1500(R) Composite Stock Market ETF
Fund S000006973 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
10,588
5
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,511,196
6
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
13F CIK 1644956 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,382,007
6.1
William Blair Small-Mid Cap Growth Fund
Fund S000008603 · Registered fund · Jun 30, 2026
WILLIAM BLAIR FUNDS, not summed
247,714
6.2
William Blair Small Cap Growth Fund
Fund S000008602 · Registered fund · Jun 30, 2026
WILLIAM BLAIR FUNDS, not summed
176,045
6.3
William Blair Small-Mid Cap Core Fund
Fund S000066499 · Registered fund · Jun 30, 2026
WILLIAM BLAIR FUNDS, not summed
36,177
7
NEUBERGER BERMAN GROUP LLC
13F CIK 1465109 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
2,020,390
7.1
Neuberger Genesis Fund
Fund S000007841 · Registered fund · May 31, 2026
NEUBERGER BERMAN EQUITY FUNDS, not summed
1,389,273
7.2
Neuberger Small-Mid Cap ETF
Fund S000084236 · Registered fund · May 31, 2026
Neuberger Berman ETF Trust, not summed
53,757
8
PRICE T ROWE ASSOCIATES INC /MD/
13F CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,924,939
8.1
T. Rowe Price New Horizons Fund, Inc.
Fund S000002106 · Registered fund · Jun 30, 2026
T. ROWE PRICE NEW HORIZONS FUND, INC., not summed
1,010,551
8.2
T. Rowe Price Integrated U.S. Small-Cap Growth Equity Fund
Fund S000002074 · Registered fund · Jun 30, 2026
T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed
185,100
8.3
T. Rowe Price Science & Technology Fund, Inc.
Fund S000002119 · Registered fund · Jun 30, 2026
T. ROWE PRICE SCIENCE & TECHNOLOGY FUND, INC., not summed
74,000
8.4
T. Rowe Price Small-Cap Index Fund
Fund S000051327 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
8,457
8.5
T. Rowe Price Extended Equity Market Index Fund
Fund S000002090 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
6,700
9
DISCIPLINED GROWTH INVESTORS INC /MN
13F CIK 1050442 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,891,864
9.1
Disciplined Growth Investors Fund
Fund S000033265 · Registered fund · Apr 30, 2025
FINANCIAL INVESTORS TRUST, not summed
159,247
9.2
The Disciplined Growth Investors Fund
Fund S000093392 · Registered fund · Jul 31, 2026
Elevation Series Trust, not summed
133,195
10
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,803,038
11
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
1,769,227
12
SNYDER CAPITAL MANAGEMENT L P
13F CIK 1050477 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,766,507
13
VANGUARD INFORMATION TECHNOLOGY INDEX FUND
Fund S000004452 · Registered fund · May 31, 2026
VANGUARD WORLD FUND, not summed
1,413,079
14
Robeco Schweiz AG
13F CIK 1418427 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,340,404
15
VANGUARD SMALL-CAP INDEX FUND
Fund S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
1,278,352
16
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
1,192,455
16.1
E*TRADE No Fee Total Market Index Fund
Fund S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
41
17
Capital International Investors
13F CIK 1562230 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,183,746
18
SMALLCAP World Fund Inc
Fund S000009599 · Registered fund · Jun 30, 2026
SMALLCAP World Fund Inc, not summed
1,151,148
19
VANGUARD EXPLORER FUND
Fund S000002578 · Registered fund · Jul 31, 2026
VANGUARD EXPLORER FUND, not summed
1,143,891
20
DIMENSIONAL FUND ADVISORS LP
13F CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,085,077
20.1
U.S. SMALL CAP PORTFOLIO
Fund S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
251,163
20.2
Dimensional U.S. Small Cap ETF
Fund S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
178,988
20.3
U.S. MICRO CAP PORTFOLIO
Fund S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
145,670
20.4
Dimensional U.S. Core Equity 2 ETF
Fund S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
100,802
20.5
U.S. CORE EQUITY 2 PORTFOLIO
Fund S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
84,908
21
Nuveen, LLC
13F CIK 1871926 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,020,059
21.1
College Retirement Equities Fund - Total Global Stock Account
Fund S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
355,069
21.2
Nuveen Multi Cap Value Fund
Fund S000000605 · Registered fund · Jun 30, 2026
Nuveen Investment Trust, not summed
259,133
21.3
Nuveen Small Cap Blend Index Fund
Fund S000005367 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
72,498
21.4
Nuveen Equity Index Fund
Fund S000005360 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
47,228
21.5
Nuveen Small Cap Value Opportunities Fund
Fund S000000606 · Registered fund · Jun 30, 2026
Nuveen Investment Trust, not summed
44,811
22
CONGRESS ASSET MANAGEMENT CO
13F CIK 897378 · Registered investment adviser · Sep 30, 2026
914,069
22.1
Congress Small Cap Growth Fund
Fund S000058028 · Registered fund · Jul 31, 2026
Professionally Managed Portfolios, not summed
730,000
23
Boston Trust Walden Corp
13F CIK 1534866 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
882,471
24
JPMORGAN CHASE & CO
13F CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
879,254
25
Invesco Ltd.
13F CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
870,396
25.1
Invesco Dorsey Wright Technology Momentum ETF
Fund S000013110 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
160,859
25.2
Invesco Small Cap Equity Fund
Fund S000000218 · Registered fund · Jun 30, 2026
AIM Funds Group (Invesco Funds Group), not summed
151,330
25.3
Invesco S&P SmallCap Information Technology ETF
Fund S000028301 · Registered fund · May 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
111,986
25.4
Invesco RAFI US 1500 Small-Mid ETF
Fund S000013120 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
96,792
25.5
Invesco Global Small Cap Equity Fund
Fund S000000212 · Registered fund · Jun 30, 2026
AIM Funds Group (Invesco Funds Group), not summed
27,574
26
Copeland Capital Management, LLC
13F CIK 1541743 · Investment adviser · Sep 30, 2026
856,776
27
AMERICAN CENTURY COMPANIES INC
13F CIK 748054 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
781,675
27.1
Small Cap Growth Fund
Fund S000006193 · Registered fund · Jul 31, 2026
American Century Mutual Funds, Inc., not summed
528,684
27.2
Small Company Fund
Fund S000005981 · Registered fund · Jun 30, 2026
American Century Quantitative Equity Funds, Inc., not summed
4,444
28
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
13F CIK 912938 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
767,672
28.1
MFS Mid Cap Growth Fund
Fund S000002434 · Registered fund · May 31, 2026
MFS Series Trust IV, not summed
552,571
28.2
MFS Mid Cap Growth Series
Fund S000002678 · Registered fund · Jun 30, 2026
MFS VARIABLE INSURANCE TRUST, not summed
14,131
29
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
764,474
29.1
Small Cap Index Fund
Fund S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
28,370
29.2
Small Cap Core Fund
Fund S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
6,159
29.3
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
1,944
30
Stephens Investment Management Group LLC
13F CIK 1314440 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
755,549
31
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
753,514
31.1
Schwab U.S. Small-Cap ETF
Fund S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
266,892
31.2
Schwab Fundamental U.S. Small Company ETF
Fund S000040878 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
177,959
31.3
Schwab Small-Cap Index Fund
Fund S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
135,866
31.4
Schwab Fundamental U.S. Small Company Index Fund
Fund S000016767 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
47,979
31.5
Schwab Total Stock Market Index Fund
Fund S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
33,739
32
WESTWOOD HOLDINGS GROUP INC
13F CIK 1165002 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
714,227
33
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
638,922
34
BNP PARIBAS ASSET MANAGEMENT Holding S.A.
13F CIK 1520354 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
502,006
35
BROWN ADVISORY INC
13F CIK 1345929 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
477,227
35.1
Brown Advisory Small-Cap Growth Fund
Fund S000038483 · Registered fund · Jun 30, 2026
Brown Advisory Funds, not summed
62,011
35.2
Brown Advisory Sustainable Small-Cap Core Fund
Fund S000072895 · Registered fund · Jun 30, 2026
Brown Advisory Funds, not summed
31,513
36
Bank of New York Mellon Corp
13F CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
466,513
36.1
BNY Mellon US Small Cap Core Equity ETF
Fund S000067262 · Registered fund · Jul 31, 2026
BNY Mellon ETF Trust, not summed
2,041
37
JPMorgan Small Cap Equity Fund
Fund S000002794 · Registered fund · Jun 30, 2026
JPMorgan Trust I, not summed
432,007
38
Connor, Clark & Lunn Investment Management Ltd.
13F CIK 1596800 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
409,271
39
VANGUARD SMALL-CAP VALUE INDEX FUND
Fund S000002847 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
404,743
40
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
400,845
41
BANK OF AMERICA CORP /DE/
13F CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
381,535
42
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
379,264
42.1
Goldman Sachs Rising Dividend Growth Fund
Fund S000036119 · Registered fund · Jul 31, 2026
GOLDMAN SACHS TRUST, not summed
29,563
42.2
Multi-Manager U.S. Small Cap Equity Fund
Fund S000051363 · Registered fund · Apr 30, 2026
Goldman Sachs Trust II, not summed
8,111
42.3
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund S000048296 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
6,623
42.4
Goldman Sachs Absolute Return Tracker Fund
Fund S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
312
43
VANGUARD TAX-MANAGED SMALL-CAP FUND
Fund S000004387 · Registered fund · Jun 30, 2026
VANGUARD TAX-MANAGED FUNDS, not summed
373,054
44
AMERIPRISE FINANCIAL INC
13F CIK 820027 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
370,174
44.1
Columbia Small Cap Index Fund
Fund S000010827 · Registered fund · May 31, 2026
COLUMBIA FUNDS SERIES TRUST, not summed
82,855
44.2
Columbia Research Enhanced Small Cap ETF
Fund S000095313 · Registered fund · Jun 30, 2026
Columbia ETF Trust I, not summed
106
45
VANGUARD SMALL-CAP GROWTH INDEX FUND
Fund S000002846 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
369,286
46
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
359,770
47
Tributary Capital Management, LLC
13F CIK 1441888 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
332,001
47.1
TRIBUTARY SMALL COMPANY FUND
Fund S000022139 · Registered fund · Jun 30, 2026
TRIBUTARY CAPITAL MANAGEMENT, LLC, not summed
188,352
47.2
TRIBUTARY SMALL/MID CAP FUND
Fund S000059580 · Registered fund · Jun 30, 2026
TRIBUTARY CAPITAL MANAGEMENT, LLC, not summed
7,542
48
VANGUARD DIVIDEND APPRECIATION INDEX FUND
Fund S000011322 · Registered fund · Jul 31, 2026
VANGUARD SPECIALIZED FUNDS, not summed
315,298
49
Aperture Investors, LLC
13F CIK 1787596 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
307,841
50
VANGUARD RUSSELL 2000 INDEX FUND
Fund S000030003 · Registered fund · May 31, 2026
VANGUARD SCOTTSDALE FUNDS, not summed
283,661

45 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

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Key facts CIK 833640 CUSIP 739276103 13F (30d) 42 filings 42 filers Visit website Investor relations