POWI Power Integrations, Inc.
Power Integrations, Inc. (POWI) Institutional Ownership
What the institutions did with POWI last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 8.7M | 13.9% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.2M | 8.3% |
| WELLINGTON MANAGEMENT GROUP LLP | 3.6M | 5.7% |
| STATE STREET CORP | 3.2M | 5.1% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.5M | 4.0% |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 2.4M | 3.8% |
| NEUBERGER BERMAN GROUP LLC | 2.0M | 3.2% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.9M | 3.1% |
| DISCIPLINED GROWTH INVESTORS INC /MN | 1.9M | 3.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.8M | 2.9% |
| SNYDER CAPITAL MANAGEMENT L P | 1.8M | 2.8% |
| Robeco Schweiz AG | 1.3M | 2.1% |
| MORGAN STANLEY | 1.2M | 1.9% |
| Capital International Investors | 1.2M | 1.9% |
| DIMENSIONAL FUND ADVISORS LP | 1.1M | 1.7% |
| Nuveen, LLC | 1.0M | 1.6% |
| CONGRESS ASSET MANAGEMENT CO | 930.1K | 1.5% |
| Copeland Capital Management, LLC | 882.8K | 1.4% |
| Boston Trust Walden Corp | 882.5K | 1.4% |
| JPMORGAN CHASE & CO | 879.3K | 1.4% |
| Invesco Ltd. | 870.4K | 1.4% |
| AMERICAN CENTURY COMPANIES INC | 781.7K | 1.2% |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 767.7K | 1.2% |
| NORTHERN TRUST CORP | 764.5K | 1.2% |
| Stephens Investment Management Group LLC | 755.5K | 1.2% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| NEUBERGER BERMAN GROUP LLC | Reduced | 3.9M | 2.0M | -1.9M |
| Hudson Bay Capital Management LP | Sold Out | 1.0M | 0 | -1.0M |
| CONGRESS ASSET MANAGEMENT CO | New | 0 | 930.1K | +930.1K |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | New | 0 | 767.7K | +767.7K |
| AMERICAN CENTURY COMPANIES INC | Increased | 26.6K | 781.7K | +755.1K |
| Invesco Ltd. | Increased | 280.7K | 870.4K | +589.7K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 1.4M | 1.9M | +528.5K |
| Robeco Schweiz AG | Increased | 870.2K | 1.3M | +470.2K |
| Copeland Capital Management, LLC | Reduced | 1.3M | 882.8K | -439.0K |
| JPMORGAN CHASE & CO | Reduced | 1.3M | 879.3K | -414.1K |
| MARSHALL WACE, LLP | Sold Out | 360.2K | 0 | -360.2K |
| SNYDER CAPITAL MANAGEMENT L P | Reduced | 2.1M | 1.8M | -337.6K |
| NOMURA HOLDINGS INC | Sold Out | 325.3K | 0 | -325.3K |
| MORGAN STANLEY | Reduced | 1.5M | 1.2M | -309.5K |
| Aperture Investors, LLC | New | 0 | 307.8K | +307.8K |
| Boston Trust Walden Corp | Increased | 577.6K | 882.5K | +304.9K |
| AMERIPRISE FINANCIAL INC | Increased | 93.6K | 370.2K | +276.5K |
| UBS Group AG | Reduced | 624.5K | 359.8K | -264.7K |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 3.4M | 3.6M | +239.7K |
| BANK OF AMERICA CORP /DE/ | Reduced | 601.5K | 381.5K | -219.9K |
| Foresight Group Ltd Liability Partnership | Sold Out | 219.5K | 0 | -219.5K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 5.0M | 5.2M | +214.4K |
| BROWN ADVISORY INC | Reduced | 686.8K | 477.2K | -209.6K |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | Sold Out | 206.5K | 0 | -206.5K |
| BlackRock, Inc. | Increased | 8.5M | 8.7M | +200.3K |
| RIVERBRIDGE PARTNERS LLC | Reduced | 336.1K | 138.5K | -197.5K |
| WESTWOOD HOLDINGS GROUP INC | Reduced | 873.0K | 714.2K | -158.8K |
| EMERALD ADVISERS, LLC | Increased | 116.0K | 264.3K | +148.3K |
| WCM INVESTMENT MANAGEMENT, LLC | Reduced | 156.9K | 13.8K | -143.1K |
| Granite Investment Partners, LLC | Reduced | 324.9K | 186.4K | -138.5K |
| S SQUARED TECHNOLOGY, LLC | Sold Out | 136.9K | 0 | -136.9K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Reduced | 638.2K | 502.0K | -136.2K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.7M | 1.8M | +128.2K |
| Connor, Clark & Lunn Investment Management Ltd. | Increased | 282.9K | 409.3K | +126.3K |
| Handelsbanken Fonder AB | Reduced | 148.0K | 22.2K | -125.8K |
| Arosa Capital Management LP | New | 0 | 125.0K | +125.0K |
| SORA INVESTORS LLC | Sold Out | 120.0K | 0 | -120.0K |
| JANE STREET GROUP, LLC | New | 0 | 117.5K | +117.5K |
| STATE STREET CORP | Increased | 3.1M | 3.2M | +116.3K |
| EMERALD MUTUAL FUND ADVISERS TRUST | Increased | 61.3K | 172.2K | +110.9K |
| Ceredex Value Advisors LLC | Reduced | 262.1K | 161.4K | -100.7K |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 137.4K | 43.6K | -93.8K |
| DEUTSCHE BANK AG\ | Reduced | 243.6K | 150.1K | -93.5K |
| ProShare Advisors LLC | Reduced | 284.0K | 195.7K | -88.3K |
| NORTHERN TRUST CORP | Reduced | 841.6K | 764.5K | -77.1K |
| Holocene Advisors, LP | Reduced | 87.9K | 12.8K | -75.1K |
| HERALD INVESTMENT MANAGEMENT Ltd | Reduced | 175.0K | 100.4K | -74.6K |
| Capital International Investors | Increased | 1.1M | 1.2M | +71.4K |
| OSAIC HOLDINGS, INC. | Increased | 1.5K | 71.6K | +70.1K |
| Allspring Global Investments Holdings, LLC | New | 0 | 69.9K | +69.9K |
| DISCIPLINED GROWTH INVESTORS INC /MN | Reduced | 2.0M | 1.9M | -67.3K |
| CITADEL ADVISORS LLC | Reduced | 109.9K | 42.7K | -67.3K |
| Ariose Capital Management Ltd | New | 0 | 66.6K | +66.6K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | Increased | 34.4K | 91.7K | +57.3K |
| Madison Asset Management, LLC | Reduced | 102.9K | 45.7K | -57.2K |
| PALISADE CAPITAL MANAGEMENT, LP | New | 0 | 57.2K | +57.2K |
| CRAWFORD INVESTMENT COUNSEL INC | Reduced | 227.9K | 176.1K | -51.8K |
| LOOMIS SAYLES & CO L P | Increased | 233.6K | 280.1K | +46.5K |
| GOLDMAN SACHS GROUP INC | Increased | 335.7K | 379.3K | +43.5K |
| SEI INVESTMENTS CO | Increased | 218.4K | 257.8K | +39.4K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.