Power Integrations, Inc. (POWI) Ownership
POWI ownership summary
as of October 18, 2026- Institutions
- 112.9% of shares outstanding
- Insiders
- 1.69% of shares outstanding
- Shares outstanding
- 55.9M
- Float
- 55.0M shares available to trade
- Short interest
- 13.90% 5.5M shares short
- Days to cover
- 6.32 short interest down 6.7% vs prior month
- Institutions 112.89%
- Insiders 1.69%
POWI top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 15.61% | 8.7M | $388.1M | +200,304 (+2.4%) | June 30, 2026 |
| 2 | Vanguard Portfolio Management, LLC | 9.29% | 5.2M | $231.0M | +214,425 (+4.3%) | June 30, 2026 |
| 3 | Wellington Management Company LLP | 6.44% | 3.6M | $160.0M | +239,702 (+7.1%) | June 30, 2026 |
| 4 | State Street Corp | 5.72% | 3.2M | $142.1M | +116,312 (+3.8%) | June 30, 2026 |
| 5 | Vanguard Capital Management, LLC | 4.49% | 2.5M | $111.7M | +4,277 (+0.2%) | June 30, 2026 |
| 6 | William Blair Investment Management, LLC | 4.26% | 2.4M | $106.0M | +1,330 (+0.1%) | June 30, 2026 |
| 7 | Neuberger Berman Group LLC | 3.62% | 2.0M | $89.9M | −1.9M (−48.6%) | June 30, 2026 |
| 8 | T. Rowe Price Associates, Inc. | 3.45% | 1.9M | $85.7M | +528,456 (+37.8%) | June 30, 2026 |
| 9 | Disciplined Growth Investors Inc | 3.39% | 1.9M | $84.2M | −67,308 (−3.4%) | June 30, 2026 |
| 10 | Geode Capital Management, LLC | 3.23% | 1.8M | $80.2M | +128,213 (+7.7%) | June 30, 2026 |
| 11 | Snyder Capital Management LP | 3.16% | 1.8M | $78.6M | −337,556 (−16.0%) | June 30, 2026 |
| 12 | Sam Sustainable Asset Management Ltd | 2.40% | 1.3M | $59.6M | +470,234 (+54.0%) | June 30, 2026 |
| 13 | Morgan Stanley - Brokerage Accounts | 2.13% | 1.2M | $53.1M | −309,505 (−20.6%) | June 30, 2026 |
| 14 | Capital Research & Mgmt Co - Division 3 | 2.12% | 1.2M | $52.7M | +71,356 (+6.4%) | June 30, 2026 |
| 15 | Dimensional Fund Advisors, Inc. | 1.94% | 1.1M | $48.3M | +27,922 (+2.6%) | June 30, 2026 |
| 16 | Nuveen, LLC | 1.83% | 1.0M | $45.4M | −28,094 (−2.7%) | June 30, 2026 |
| 17 | Congress Asset Management Company, LLP | 1.66% | 930K | $41.4M | +930,059 (0.0%) | June 30, 2026 |
| 18 | Copeland Capital Management, LLC | 1.58% | 883K | $39.3M | −438,979 (−33.2%) | June 30, 2026 |
| 19 | BTIM Corp | 1.58% | 882K | $39.3M | +304,866 (+52.8%) | June 30, 2026 |
| 20 | JPMorgan Chase & Co | 1.57% | 879K | $39.1M | −414,121 (−32.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 3.2M shares and 7 cut 3.5M.
POWI top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 5.95% | 3.3M | $148.0M | +768 (+0.0%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 3.17% | 1.8M | $78.9M | −2,298 (−0.1%) | August 31, 2026 |
| 3 | iShares Russell 2000 ETF | 2.60% | 1.5M | $64.7M | −16,768 (−1.1%) | September 30, 2026 |
| 4 | State Street® SPDR® S&P® Smcndctr ETF | 2.60% | 1.5M | $64.6M | +6,157 (+0.4%) | September 30, 2026 |
| 5 | Vanguard Information Technology ETF | 2.52% | 1.4M | $62.8M | −2,274 (−0.2%) | August 31, 2026 |
| 6 | Vanguard Explorer Inv | 2.37% | 1.3M | $58.9M | −244,171 (−15.6%) | June 30, 2026 |
| 7 | Invesco Semiconductors ETF | 2.30% | 1.3M | $57.2M | — | September 30, 2026 |
| 8 | Vanguard Small Cap Index | 2.29% | 1.3M | $57.0M | −211 (−0.0%) | August 31, 2026 |
| 9 | Robeco Smart Energy F-EUR Cap | 2.16% | 1.2M | $53.6M | — | August 31, 2026 |
| 10 | American Funds SMALLCAP World A | 2.06% | 1.2M | $51.2M | +38,758 (+3.5%) | June 30, 2026 |
| 11 | Neuberger Genesis Inv | 2.02% | 1.1M | $50.3M | −1.1M (−49.4%) | June 30, 2026 |
| 12 | Congress Small Cap Growth Institutional | 1.31% | 730K | $32.5M | — | August 31, 2026 |
| 13 | Fidelity Small Cap Index | 1.10% | 613K | $27.3M | +5,009 (+0.8%) | July 31, 2026 |
| 14 | Invesco Discovery A | 1.09% | 611K | $27.2M | +50,453 (+9.0%) | August 31, 2026 |
| 15 | MFS Mid Cap Growth A | 0.99% | 553K | $24.6M | — | August 31, 2026 |
| 16 | American Century Small Cap Growth Inv | 0.95% | 529K | $23.5M | +528,684 (0.0%) | June 30, 2026 |
| 17 | iShares Russell 2000 Growth ETF | 0.94% | 526K | $23.4M | −665 (−0.1%) | September 30, 2026 |
| 18 | State Street SPDR Port S&P 600 Sm CpETF | 0.92% | 512K | $22.8M | — | September 30, 2026 |
| 19 | iShares S&P Small-Cap 600 Value ETF | 0.85% | 472K | $21.0M | — | September 30, 2026 |
| 20 | BNP Paribas US Small Cap ClassicC | 0.82% | 456K | $20.3M | −874 (−0.2%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
POWI insider transactions
latest 19| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-02 | Gagan Jain | Sell | $51.93 | 313 | $16,254 |
| 2026-02-25 | Gagan Jain | Sell | $48.22 | 3,481 | $167,854 |
| 2026-02-10 | Balu Balakrishnan | Sell | $47.20 | 4,995 | $235,764 |
| 2026-02-10 | Sunil Gupta | Sell | $45.97 | 1,272 | $58,474 |
| 2026-02-09 | Balu Balakrishnan | Sell | $46.53 | 6,368 | $296,303 |
| 2026-02-09 | Jennifer A Lloyd | Sell | $46.57 | 3,322 | $154,706 |
| 2026-02-09 | Sunil Gupta | Sell | $46.57 | 1,401 | $65,245 |
| 2026-02-03 | Sunil Gupta | Sell | $45.58 | 2,168 | $98,817 |
| 2026-02-03 | Gagan Jain | Sell | $45.58 | 157 | $7,156 |
| 2026-02-03 | Balu Balakrishnan | Sell | $44.75 | 10,080 | $451,080 |
| 2026-01-29 | Balu Balakrishnan | Sell | $46.59 | 5,581 | $260,019 |
| 2026-01-29 | Gagan Jain | Sell | $46.50 | 995 | $46,268 |
| 2026-01-29 | Sunil Gupta | Sell | $46.50 | 1,698 | $78,957 |
| 2025-11-24 | Gagan Jain | Sell | $33.80 | 1,033 | $34,915 |
| 2025-11-04 | Gagan Jain | Sell | $40.22 | 111 | $4,464 |
| 2025-09-24 | Gagan Jain | Sell | $41.43 | 456 | $18,892 |
| 2025-08-18 | Doug Bailey | Sell | $46.41 | 16,989 | $788,459 |
| 2025-08-14 | Doug Bailey | Sell | $46.86 | 16,989 | $796,105 |
| 2025-08-12 | Gagan Jain | Sell | $46.05 | 2,036 | $93,758 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
POWI shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns POWI
Institutional investors own 112.9% of Power Integrations's shares and insiders 1.69%. The largest holder is BlackRock Inc with 15.61% of the shares (8.7M), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 7 reduced their stake in the latest filings. Short interest is 13.90% of the float, or 6.32 days of average trading volume. The share count fell 7.3% since 2014.
Related: POWI analyst forecast, POWI key metrics, POWI dividend history. See the POWI stock overview for the latest quote and news.
POWI ownership FAQ
Who owns the most Power Integrations stock?
The largest shareholders of Power Integrations are BlackRock Inc (15.61%), Vanguard Portfolio Management, LLC (9.29%), Wellington Management Company LLP (6.44%), State Street Corp (5.72%), Vanguard Capital Management, LLC (4.49%).
What percentage of Power Integrations is owned by institutions?
Institutions hold 112.9% of Power Integrations's shares outstanding; insiders hold 1.69%.
Which funds own Power Integrations?
The largest fund holders of Power Integrations are iShares Core S&P Small-Cap ETF (5.95%), Vanguard MStar Total Stk Mkt Idx Invest (3.17%), iShares Russell 2000 ETF (2.60%), State Street® SPDR® S&P® Smcndctr ETF (2.60%), Vanguard Information Technology ETF (2.52%).
What is Power Integrations's short interest?
5.5M shares of Power Integrations were sold short, 13.90% of the float; at the average daily volume it would take 6.32 days to cover.
Are insiders buying or selling Power Integrations?
Of the latest 19 reported insider transactions in Power Integrations (since August 12, 2025), 0 were purchases and 19 were sales.
How many shares of Power Integrations are outstanding?
Power Integrations has 55.9M shares outstanding, of which 55.0M are in the public float.