POWI Institutional Ownership & Shareholders
POWER INTEGRATIONS INC (POWI) is currently held by 349 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $5.01B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of POWI tracked by InsiderSet, reporting ownership valued at approximately $730.56M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $382.55M, representing an estimated loss of -47.64% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 55% of the total disclosed POWI value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Portfolio Management Llc, Wellington Management Group Llp, and several other long-term asset managers with concentrated positions in POWER INTEGRATIONS INC (POWI).
This page ranks the largest institutional POWI shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
349
Total Reported Value
$5.01B
Largest Holder
Blackrock, Inc.
Largest Position
$730.56M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
76
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 8,722,053 | $730,559,121 | $382,549,245 | -$348,009,876 | -47.64% | |
| Vanguard Portfolio Management Llc | 0.02% | 5,190,284 | $434,738,188 | $227,645,856 | -$207,092,332 | -47.64% | |
| Wellington Management Group Llp | 0.05% | 3,595,855 | $301,188,815 | $157,714,200 | -$143,474,615 | -47.64% | |
| State Street Corp | 0.01% | 3,194,155 | $267,494,908 | $140,095,638 | -$127,399,270 | -47.63% | |
| Vanguard Capital Management Llc | 0.00% | 2,511,196 | $210,337,777 | $110,141,057 | -$100,196,720 | -47.64% | |
| William Blair Investment Management, Llc | 0.60% | 2,382,007 | $199,516,906 | $104,474,827 | -$95,042,079 | -47.64% | |
| Price T Rowe Associates Inc | 0.02% | 1,924,939 | $161,234,000 | $84,427,825 | -$76,806,175 | -47.64% | |
| Disciplined Growth Investors | Fred Martin | 2.68% | 1,891,864 | $158,462,571 | $82,977,155 | -$75,485,416 | -47.64% |
| Geode Capital Management, Llc | 0.01% | 1,803,038 | $151,043,419 | $79,081,247 | -$71,962,172 | -47.64% | |
| Snyder Capital Management L P | 2.56% | 1,766,507 | $147,962,626 | $77,478,997 | -$70,483,629 | -47.64% | |
| Neuberger Berman Group Llc | 0.11% | 3,973,057 | $141,202,453 | $174,258,280 | +$33,055,827 | +23.41% | |
| Morgan Stanley | 0.01% | 1,192,455 | $99,880,271 | $52,301,076 | -$47,579,195 | -47.64% | |
| Capital International Investors | 0.02% | 1,183,746 | $99,150,565 | $51,919,100 | -$47,231,465 | -47.64% | |
| Dimensional Fund Advisors Lp | 0.02% | 1,085,077 | $90,871,252 | $47,591,477 | -$43,279,775 | -47.63% | |
| Nuveen, Llc | 0.02% | 1,020,059 | $85,440,106 | $44,739,788 | -$40,700,318 | -47.64% | |
| Invesco Ltd. | 0.01% | 870,396 | $72,904,371 | $38,175,569 | -$34,728,802 | -47.64% | |
| Jpmorgan Chase & Co | 0.00% | 879,254 | $69,620,927 | $38,564,080 | -$31,056,847 | -44.61% | |
| Boston Trust Walden Corp | 0.54% | 1,290,017 | $66,822,881 | $56,580,146 | -$10,242,735 | -15.33% | |
| Robeco Schweiz Ag | 1.20% | 1,288,004 | $66,718,607 | $56,491,855 | -$10,226,752 | -15.33% | |
| American Century Companies Inc | 0.03% | 781,675 | $65,473,238 | $34,284,266 | -$31,188,973 | -47.64% | |
| Massachusetts Financial Services Co | 0.02% | 767,672 | $64,295,211 | $33,670,094 | -$30,625,117 | -47.63% | |
| Northern Trust Corp | 0.01% | 764,474 | $64,032,341 | $33,529,830 | -$30,502,511 | -47.64% | |
| Stephens Investment Management Group Llc | 0.68% | 755,549 | $63,284,784 | $33,138,379 | -$30,146,405 | -47.64% | |
| Charles Schwab Investment Management Inc | 0.01% | 753,514 | $63,114,333 | $33,049,124 | -$30,065,209 | -47.64% | |
| Westwood Holdings Group Inc | 0.45% | 714,227 | $59,823,652 | $31,325,996 | -$28,497,656 | -47.64% | |
| Congress Asset Management Co | 0.31% | 914,069 | $47,348,759 | $40,091,066 | -$7,257,693 | -15.33% | |
| Copeland Capital Management, Llc | 1.02% | 856,776 | $44,381,081 | $37,578,195 | -$6,802,886 | -15.33% | |
| Bnp Paribas Asset Management Holding S.A. | 0.04% | 502,006 | $42,048,022 | $22,017,983 | -$20,030,039 | -47.64% | |
| Brown Advisory Inc | 0.06% | 477,227 | $39,972,558 | $20,931,176 | -$19,041,382 | -47.64% | |
| Bank Of New York Mellon Corp | 0.01% | 466,513 | $39,075,133 | $20,461,260 | -$18,613,873 | -47.64% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.06% | 409,271 | $34,280,539 | $17,950,626 | -$16,329,913 | -47.64% | |
| Vanguard Fiduciary Trust Co | 0.01% | 400,845 | $33,574,777 | $17,581,062 | -$15,993,715 | -47.64% | |
| Bank Of America Corp | 0.00% | 381,535 | $31,957,373 | $16,734,125 | -$15,223,248 | -47.64% | |
| Goldman Sachs Group Inc | 0.00% | 379,264 | $31,767,154 | $16,634,519 | -$15,132,635 | -47.64% | |
| Ameriprise Financial Inc | 0.01% | 370,174 | $31,005,817 | $16,235,832 | -$14,769,985 | -47.64% | |
| Ubs Group Ag | 0.00% | 359,770 | $30,134,335 | $15,779,512 | -$14,354,823 | -47.64% | |
| Aperture Investors, Llc | 2.74% | 307,841 | $25,784,762 | $13,501,906 | -$12,282,856 | -47.64% | |
| Envestnet Asset Management Inc | 0.01% | 282,650 | $23,674,804 | $12,397,029 | -$11,277,775 | -47.64% | |
| Loomis Sayles & Co L P | 0.03% | 280,087 | $23,460,087 | $12,284,616 | -$11,175,471 | -47.64% | |
| Federated Hermes, Inc. | 0.03% | 267,665 | $22,419,620 | $11,739,787 | -$10,679,833 | -47.64% | |
| Emerald Advisers, Llc | 0.52% | 264,342 | $22,141,286 | $11,594,040 | -$10,547,246 | -47.64% | |
| Principal Financial Group Inc | 0.01% | 419,600 | $21,735,280 | $18,403,656 | -$3,331,624 | -15.33% | |
| Sei Investments Co | 0.02% | 257,799 | $21,594,004 | $11,307,064 | -$10,286,940 | -47.64% | |
| First Trust Advisors Lp | 0.01% | 191,764 | $16,062,152 | $8,410,769 | -$7,651,383 | -47.64% | |
| Public Sector Pension Investment Board | 0.04% | 191,450 | $16,035,852 | $8,396,997 | -$7,638,855 | -47.64% | |
| Granite Investment Partners, Llc | 0.80% | 186,420 | $15,614,539 | $8,176,381 | -$7,438,158 | -47.64% | |
| Tributary Capital Management, Llc | 1.39% | 294,173 | $15,238,176 | $12,902,428 | -$2,335,748 | -15.33% | |
| Crawford Investment Counsel Inc | 0.25% | 176,147 | $14,754,034 | $7,725,807 | -$7,028,227 | -47.64% | |
| Emerald Mutual Fund Advisers Trust | 0.51% | 172,196 | $14,423,137 | $7,552,517 | -$6,870,620 | -47.64% | |
| Ceredex Value Advisors Llc | 0.38% | 161,400 | $13,518,864 | $7,079,004 | -$6,439,860 | -47.64% |
Frequently asked questions about POWI
Who are the largest institutional holders of POWI?
The largest institutional holders of POWI reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Portfolio Management Llc, Wellington Management Group Llp, State Street Corp, and Vanguard Capital Management Llc. InsiderSet ranks institutional holders by their latest reported POWI position.
What is POWI institutional ownership?
This page tracks POWI positions reported by institutional investment managers through SEC Form 13F. POWER INTEGRATIONS INC (POWI) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own POWI?
InsiderSet currently tracks 349 institutional managers reporting POWI holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of POWI shareholders.
How much POWI stock do institutions own?
Institutional investment managers disclosed approximately $5.01B in POWI holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was POWI institutional ownership last updated?
The latest POWI institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional POWI holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its POWI position after the reporting date.
Are institutions buying or selling POWI?
Institutional buying and selling can be analyzed by comparing POWI positions across consecutive 13F reporting periods. InsiderSet's POWI Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View POWI ownership changes.
How has POWI institutional ownership changed over time?
InsiderSet tracks POWI institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.