POWI · Power Integrations Inc · Shareholders & Ownership
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 positionsNo 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 | As of | Notes |
|---|---|---|---|---|
| 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 |
|
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 |
|
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 |
|
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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