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POWI · Power Integrations Inc

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Market Cap
$3.00B
Shares
55.87M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 375
Total Value: $5,312,995,204
Total Shares: 63,431,178
Showing 1–100 of 386 holdings by value · page 1 of 4

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 375 13F filers · Δ vs Mar 31, 2026
Top Holder
13.8%
Sep 2023 → Jun 2026 · range 12.4% – 14.2%
+0.4 pts
Top 5
36.6%
Sep 2023 → Jun 2026 · range 36.6% – 43.1%
−0.9 pts
Top 10
52.4%
Sep 2023 → Jun 2026 · range 50.1% – 57.7%
−1.8 pts
HHI
430
Sep 2023 → Jun 2026 · range 424 – 532
Broadly held−5

Quarterly Activity

vs Mar 31, 2026
New
99
Increased
116
Decreased
113
Sold Out
35
Unchanged
47
Holder count: +64
Institutional value: +62.9%
Shares held: -0.4%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 386
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 833640 CUSIP 739276103 13F (30d) 301 filings 289 filers Visit website Investor relations