Power Integrations Inc
Ownership
Ownership Structure
Who owns Power Integrations Inc (POWI)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.5% of the shares are freely tradable; institutional investors hold 116.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 15.25 | 8,521,749 | +0.1 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 8.91 | 4,975,859 | +0.0 | 03/31/2026 |
| Neuberger Berman Group LLC | 7.04 | 3,933,099 | -1.0 | 03/31/2026 |
| Wellington Management Company LLP | 6.44 | 3,595,855 | +7.1 | 06/30/2026 |
| State Street Corp | 5.51 | 3,077,843 | -9.5 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.49 | 2,506,919 | +0.0 | 03/31/2026 |
| William Blair Investment Management, LLC | 4.26 | 2,382,007 | +0.1 | 06/30/2026 |
| Disciplined Growth Investors Inc | 3.39 | 1,891,864 | -3.4 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 6.08 | 3,396,212 | +0.0 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.18 | 1,775,539 | +0.3 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Lloyd Jennifer A | President and CEO | 136,655 | 6,723,426 $ | Jul 22, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 22, 2026 | Lloyd Jennifer A | President and CEO | Sell | 7,050 | 73.73 | 519,797 |
| Jul 22, 2026 | Lloyd Jennifer A | President and CEO | Sell | 5,640 | 73.73 | 415,837 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.