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Of the 8 tracked institutions holding POWI, 2 have a 3-year clone track record — 2 of them beat the S&P. Average holder's clone alpha: +4.7pt. It's a gauge of who owns the name, not just how many.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Among the 8 tracked institutional investors we monitor, POWI (POWER INTEGRATIONS INC) is held with a combined value of $1.12B across 24,167,501 shares. The largest holder is BlackRock, Inc. with a position worth $436.31M. 6 funds increased their holdings. 2 funds reduced their position.
Total Institutional Value
$1.12B
Total Shares Held
24,167,501
Institutional Holders
8
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $436.31M | 0.01% | +0.1% |
| 2 | VANGUARD GROUP INC | $268.57M | 0.00% | +5.7% |
| 3 | WELLINGTON MANAGEMENT GROUP LLP | $171.84M | 0.03% | +38.5% |
| 4 | STATE STREET CORP | $157.59M | 0.01% | -9.5% |
| 5 | PRICE T ROWE ASSOCIATES INC /MD/ | $71.50M | 0.01% | +48.0% |
| 6 | AQR CAPITAL MANAGEMENT LLC | $6.75M | 0.00% | -51.7% |
| 7 | CITADEL ADVISORS LLC | $5.63M | 0.00% | +1148.5% |
| 8 | FMR LLC | $565.16K | 0.00% | +50.6% |
| Member | Type | Date |
|---|---|---|
| Thomas R Tillis | Sell | Feb 13, 2015 |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of POWI with a position worth $436.31M, representing 0.01% of their portfolio. In total, 8 institutional investors hold POWI with a combined value of $1.12B.
Institutional investors hold $1.12B worth of POWI stock across 8 positions. The largest institutional holder is BlackRock, Inc. with $436.31M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For POWI, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their POWI positions.
Last Close
$63.41
2026-07-27
YTD
+70.0%
58% of 52-week range
