Who owns POWER INTEGRATIONS INC?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of POWI from SEC Form 13F filings across 373 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 373 institutions disclosed 62.6M shares of POWER INTEGRATIONS INC worth $5.24B — about 112.3% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
373
13F holders
$5.24B
value, 2026 filers
112.3%
of shares outstanding (62.6M sh)
101
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of POWI's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 8.7M | $730.6M | 0.0% | 15.6% | +2.4% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 5.2M | $434.7M | 0.0% | 9.3% | +4.3% |
| 3 | WELLINGTON MANAGEMENT GROUP LLP | 3.6M | $301.2M | 0.1% | 6.5% | +7.1% |
| 4 | STATE STREET CORP | 3.2M | $267.5M | 0.0% | 5.7% | +3.8% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.5M | $210.3M | 0.0% | 4.5% | +0.2% |
| 6 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 2.4M | $199.5M | 0.6% | 4.3% | +0.1% |
| 7 | NEUBERGER BERMAN GROUP LLC | 2.0M | $169.2M | 0.1% | 3.6% | -48.6% |
| 8 | PRICE T ROWE ASSOCIATES INC /MD/ | 1.9M | $161.2M | 0.0% | 3.5% | +37.8% |
| 9 | DISCIPLINED GROWTH INVESTORS INC /MN | 1.9M | $158.5M | 2.7% | 3.4% | -3.4% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 1.8M | $151.0M | 0.0% | 3.2% | +7.7% |
| 11 | SNYDER CAPITAL MANAGEMENT L P | 1.8M | $148.0M | 2.6% | 3.2% | -16.0% |
| 12 | Robeco Schweiz AG | 1.3M | $112.3M | 1.8% | 2.4% | +54.0% |
| 13 | MORGAN STANLEY | 1.2M | $99.9M | 0.0% | 2.1% | -20.6% |
| 14 | Capital International Investors | 1.2M | $99.2M | 0.0% | 2.1% | +6.4% |
| 15 | DIMENSIONAL FUND ADVISORS LP | 1.1M | $90.9M | 0.0% | 1.9% | +2.6% |
| 16 | Nuveen, LLC | 1.0M | $85.4M | 0.0% | 1.8% | -2.7% |
| 17 | CONGRESS ASSET MANAGEMENT CONEW | 930,059 | $77.9M | 0.5% | 1.7% | new |
| 18 | Copeland Capital Management, LLC | 882,810 | $73.9M | 1.5% | 1.6% | -33.2% |
| 19 | Boston Trust Walden Corp | 882,471 | $73.9M | 0.6% | 1.6% | +52.8% |
| 20 | JPMORGAN CHASE & CO | 879,254 | $69.6M | 0.0% | 1.6% | -32.0% |
| 21 | Invesco Ltd. | 870,396 | $72.9M | 0.0% | 1.6% | +210.1% |
| 22 | AMERICAN CENTURY COMPANIES INC | 781,675 | $65.5M | 0.0% | 1.4% | +2842.2% |
| 23 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/NEW | 767,672 | $64.3M | 0.0% | 1.4% | new |
| 24 | NORTHERN TRUST CORP | 764,474 | $64.0M | 0.0% | 1.4% | -9.2% |
| 25 | Stephens Investment Management Group LLC | 755,549 | $63.3M | 0.7% | 1.4% | +1.4% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.