Stocks › POWI
POWER INTEGRATIONS INC
POWI·Nasdaq·
United States·USD
United States·USD$53.40
-0.96 (-1.77%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
POWI
POWER INTEGRATIONS INC · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
POWIS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
Loading price history…
Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of POWI by members of U.S. Congress · 14 on record
Whale Activity
Position changes in POWI reported for 2026-06-30 by 10 tracked institutional filers
- Increased3
- New2
- Held0
- Decreased2
- Closed0
- No prior filing3
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 8.7M | $730.6M | increased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.2M | $434.7M | increased |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.5M | $210.3M | increased |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 2.4M | $199.5M | — |
| SNYDER CAPITAL MANAGEMENT L P | 1.8M | $148.0M | — |
| CITADEL ADVISORS LLC | 42.7K | $3.6M | decreased |
| D. E. Shaw & Co., Inc. | 25.9K | $2.2M | new |
| Bridgewater Associates, LP | 17.9K | $1.5M | new |
| TWO SIGMA INVESTMENTS, LP | 13.7K | $1.1M | decreased |
| Lepercq De Neuflize Asset Management LLC | 5,000 | $419K | — |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by POWI insiders, by quarter · Form 4
Recent Insider Transactions
4,872 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Lloyd Jennifer APresident and CEO · Director | Sale | −7,050 | $73.73 | $520K | Jul 22, 2026 | Form 4 ↗ |
| Lloyd Jennifer APresident and CEO · Director | Sale | −5,640 | $73.73 | $416K | Jul 22, 2026 | Form 4 ↗ |
| Gupta SunilSr. Vice President, Operations | Sale | −6,860 | $83.67 | $574K | May 29, 2026 | Form 4 ↗ |
| BALAKRISHNAN BALUDirector | Sale | −29.0K | $87.05 | $2.5M | May 28, 2026 | Form 4 ↗ |
| BALAKRISHNAN BALUDirector | Sale | −95.3K | $86.25 | $8.2M | May 28, 2026 | Form 4 ↗ |
| BRATHWAITE NICHOLASDirector | Sale | −1,728 | $86.62 | $150K | May 27, 2026 | Form 4 ↗ |
| Gupta SunilSr. Vice President, Operations | Sale | −15.9K | $82.18 | $1.3M | May 26, 2026 | Form 4 ↗ |
| BRATHWAITE NICHOLASDirector | Sale | −6,655 | $82.71 | $550K | May 26, 2026 | Form 4 ↗ |
| BALAKRISHNAN BALUDirector | Sale | −70.7K | $82.26 | $5.8M | May 26, 2026 | Form 4 ↗ |
| BALAKRISHNAN BALUDirector | Sale | −47.9K | $80.93 | $3.9M | May 26, 2026 | Form 4 ↗ |
| BALAKRISHNAN BALUDirector | Sale | −53.9K | $70.71 | $3.8M | May 21, 2026 | Form 4 ↗ |
| Balow MichaelSr. VP, Worldwide Sales | Grant / award | +32.8K | $0.00 | $0 | May 15, 2026 | Form 4 ↗ |
| BRATHWAITE NICHOLASDirector | Sale | −6,895 | $72.41 | $499K | May 13, 2026 | Form 4 ↗ |
| Jain GaganVP, Worldwide Sales | Sale | −105 | $51.93 | $5K | Apr 2, 2026 | Form 4 ↗ |
| Jain GaganVP, Worldwide Sales | Sale | −53 | $51.93 | $3K | Apr 2, 2026 | Form 4 ↗ |
| Jain GaganVP, Worldwide Sales | Sale | −64 | $51.93 | $3K | Apr 2, 2026 | Form 4 ↗ |
| Jain GaganVP, Worldwide Sales | Sale | −91 | $51.93 | $5K | Apr 2, 2026 | Form 4 ↗ |
| Lloyd Jennifer APresident and CEO | Grant / award | +73.0K | $0.00 | $0 | Feb 27, 2026 | Form 4 ↗ |
| Jain GaganVP, Worldwide Sales | Sale | −3,219 | $48.22 | $155K | Feb 25, 2026 | Form 4 ↗ |
| Jain GaganVP, Worldwide Sales | Sale | −262 | $48.30 | $13K | Feb 25, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding POWI · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF iShares Trust | 3.4M | $281.2M | 0.25% | Jun 30, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 1.8M | $148.2M | 0.01% | Jun 30, 2026 |
| iShares Russell 2000 ETF iShares Trust | 1.4M | $120.6M | 0.15% | Jun 30, 2026 |
| VANGUARD INFORMATION TECHNOLOGY INDEX FUND VANGUARD WORLD FUND | 1.4M | $118.7M | 0.07% | May 31, 2026 |
| Neuberger Genesis Fund NEUBERGER BERMAN EQUITY FUNDS | 1.4M | $116.7M | 1.59% | May 31, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 1.3M | $107.1M | 0.06% | Jun 30, 2026 |
| SMALLCAP World Fund Inc | 1.2M | $96.4M | 0.10% | Jun 30, 2026 |
| T. Rowe Price New Horizons Fund, Inc. | 1.0M | $84.6M | 0.58% | Jun 30, 2026 |
| State Street(R) SPDR(R) S&P(R) Semiconductor ETF SPDR SERIES TRUST | 982.1K | $82.3M | 2.37% | Jun 30, 2026 |
| VANGUARD EXPLORER FUND | 1.1M | $69.4M | 0.31% | Jul 31, 2026 |
Mutual funds and ETFs whose N-PORT filings list POWI's shares (CUSIP 739276103), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- Neuberger Berman Investment Advisers LLCSCHEDULE 13G/A · passive (13G) · 2.5M shares4.4%
Jun 4, 2026 · ↗ - Neuberger Berman Group LLCSCHEDULE 13G/A · passive (13G) · 2.5M shares4.5%
Jun 4, 2026 · ↗ - Wellington Management Company LLPSCHEDULE 13G · passive (13G) · 3.4M shares5.5%
May 15, 2026 · ↗ - Wellington Investment Advisors Holdings LLPSCHEDULE 13G · passive (13G) · 3.4M shares6.0%
May 15, 2026 · ↗ - Wellington Group Holdings LLPSCHEDULE 13G · passive (13G) · 3.4M shares6.0%
May 15, 2026 · ↗ - Wellington Management Group LLPSCHEDULE 13G · passive (13G) · 3.4M shares6.0%
May 15, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming POWER INTEGRATIONS INC as client
No lobbying filings found naming POWER INTEGRATIONS INC as the client.
Government Contracts
Federal awards to POWER INTEGRATIONS INC · USAspending
No federal contract awards found for POWER INTEGRATIONS INC.
U.S. Patents
Recent USPTO applications naming POWER INTEGRATIONS INC
No USPTO patent applications found for POWER INTEGRATIONS INC.
Annual Financials
From POWI's 10-K filings · XBRL
No annual XBRL figures on record for POWI. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
- 2-for-1Stock splitAug 19, 2020
- 2-for-1Stock splitNov 23, 1999
Split dates and ratios from the price history · Close Prices from Tiingo.com
Material Events (8-K)
Corporate events filed with the SEC
About POWER INTEGRATIONS INC
From SEC EDGAR company records
Industry (SIC 3674)Semiconductors & Related Devices
SectorTechnology
HeadquartersSAN JOSE, CA
IncorporatedCA
SEC CIK0000833640 ↗