Power Integrations, Inc.
Power Integrations, Inc. (POWI) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · POWI · as of Sep 30, 2025
Ownership Breakdown
315
Institutional Holders
▼ 29 vs Q2
$2.25B
Total Inst. Value
▼ $912.86M vs Q2
55.72M
Shares Outstanding
freeFloat 98.32%
55.85M
13F Shares Held
▼ 642,226 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
POWI largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC semiconductors & related devices | 7.15M | 12.70% | 12.70% | $287.39B | Nov 7, 2025 | ▲ 1.4K |
BLACKROCK, INC. semiconductors & related devices | 7.04M | 12.50% | 12.50% | $282.92B | Nov 12, 2025 | ▼ 359.4K |
NEUBERGER BERMAN GROUP LLC semiconductors & related devices | 4.19M | 7.44% | 7.44% | $168.41B | Nov 12, 2025 | ▲ 204.5K |
STATE STREET CORP semiconductors & related devices | 2.88M | 5.12% | 5.12% | $115.91B | Nov 14, 2025 | ▲ 219.4K |
WELLINGTON MANAGEMENT GROUP LLP semiconductors & related devices | 2.26M | 4.02% | 4.02% | $90.93B | Nov 14, 2025 | ▲ 595.4K |
DISCIPLINED GROWTH INVESTORS INC /MN semiconductors & related devices | 1.97M | 3.50% | 3.50% | $79.09B | Nov 14, 2025 | ▼ 93.9K |
JPMORGAN CHASE & CO semiconductors & related devices | 1.67M | 2.96% | 2.96% | $67.01B | Nov 26, 2025 | ▼ 37.5K |
GEODE CAPITAL MANAGEMENT, LLC semiconductors & related devices | 1.65M | 2.94% | 2.94% | $66.45B | Nov 12, 2025 | ▲ 10.0K |
MORGAN STANLEY semiconductors & related devices | 1.46M | 2.59% | 2.59% | $58.66B | May 27, 2026 | ▲ 86.5K |
COPELAND CAPITAL MANAGEMENT, LLC semiconductors & related devices | 1.28M | 2.27% | 2.27% | $51.34B | Oct 17, 2025 | ▲ 86.1K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
27
Increased
+2.62M shares0
New Positions
first time holders22
Decreased
−1.52M shares0
Sold Out
fully exitedNet shares change (top 50)
+1.10M
+2.62M / −1.52M
Net new holders
+5
0 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
POWI insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
1
Buy transactions
13
Sell transactions
0.08
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Gupta Sunil Sr. Vice President, Operations | May 29, 2026 | Sale | 6,860 | $83.67 | $574.0K | 64.4K | Form 4 ↗ |
BRATHWAITE NICHOLAS director | May 27, 2026 | Sale | 1,728 | $86.62 | $149.7K | 22.2K | Form 4 ↗ |
BALAKRISHNAN BALU director | May 28, 2026 | Sale | 95,287 | $86.25 | $8.22M | 308.5K | Form 4 ↗ |
BALAKRISHNAN BALU director | May 28, 2026 | Sale | 29,000 | $87.05 | $2.52M | 279.5K | Form 4 ↗ |
Gupta Sunil Sr. Vice President, Operations | May 26, 2026 | Sale | 15,894 | $82.18 | $1.31M | 71.2K | Form 4 ↗ |
BRATHWAITE NICHOLAS director | May 26, 2026 | Sale | 6,655 | $82.71 | $550.5K | 24.0K | Form 4 ↗ |
BALAKRISHNAN BALU director | May 26, 2026 | Sale | 47,863 | $80.93 | $3.87M | 474.5K | Form 4 ↗ |
BALAKRISHNAN BALU director | May 26, 2026 | Sale | 70,710 | $82.26 | $5.82M | 403.8K | Form 4 ↗ |
BALAKRISHNAN BALU director | May 21, 2026 | Sale | 53,880 | $70.71 | $3.81M | 522.4K | Form 4 ↗ |
Balow Michael Sr. VP, Worldwide Sales | May 15, 2026 | Award | 32,768 | — | — | 32.8K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Power Integrations, Inc. (POWI) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 1.68%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Power Integrations, Inc. is VANGUARD GROUP INC, holding approximately 7.15 million shares — equal to 12.70% of outstanding shares — as of September 30, 2025.
A total of 315 institutional investors currently hold POWI stock, with a combined institutional value of approximately $2.25 billion as of the most recent 13F filing period.
Frequently asked questions
POWI ownershipPower Integrations, Inc. (POWI) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 12.70% stake. Company insiders hold 1.68%. Data sourced from SEC Form 13F as of September 30, 2025.