Power Integrations Inc (POWI) stock
Close on Nov 13, 2026Market cap $2.47BP/E 55.9Yield –
Power Integrations Inc grew revenue 2.3% to $455.93M over the twelve months to Sep 30, 2026. Operating income rose 616.5% to $38.25M, moving the operating margin from 1.2% to 8.4%. Free cash flow was $91.38M, up 14.7% from a year earlier. At the latest close the market valued the company at $2.47B, 55.9 times its earnings.
Key statistics
Valuation at the latest close; fundamentals over the trailing twelve months, balances at Sep 30, 2026
Valuation
- Market cap
- $2.47B
- P/E ratio
- 55.9
- Price to sales
- 5.41
- Price to book
- 3.54
- Dividend yield
- –
- Free cash flow yield
- 3.70%
Fundamentals
- Revenue
- $455.93M
- Net income
- $44.74M
- EPS, diluted
- $0.79
- Free cash flow
- $91.38M
- Book value per share
- $12.32
- Diluted shares
- 57M
Trading
- Next earnings
- Feb 4, 2027 (estimated, during market hours)
- Previous close
- $46.06
- Open
- $46.24
- Day's range
- $43.49 – $46.24
- Volume
- 601,261
- Average volume (20 days)
- 882,881
- Index membership
- S&P SmallCap 600 (since Feb 2026), Russell 2000, Russell 3000
- Beta (5 years)
- 1.37
- 52-week range
- $30.86 – $91.18
- RSI (14 days)
- 45.0
- Volatility (1 year)
- 61.3%
- Relative volume
- 0.78×
- WACC
- 12.0%
Index membership is inferred from the holdings of funds that track each index (SPSM, IJR, IWM, IWV), as reported to the SEC for Jun 30, 2026. Join dates come from quarterly fund reports since 2019, so they are accurate to the quarter.
Market cap history
Month-end market cap since 2009, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 13, 2026. The S&P 500 is measured by the SPY fund.
| Period | POWI | S&P 500 | Difference | POWI per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | -5.4% | -3.0% | −2.4 pts | ||
| 3 months | -28.8% | -2.8% | −26.0 pts | ||
| Year to date | +25.7% | +11.5% | +14.2 pts | ||
| 1 year | +29.4% | +13.5% | +15.9 pts | ||
| 3 years | -35.5% | +77.7% | −113.2 pts | -13.6% | +21.1% |
| 5 years | -54.7% | +72.6% | −127.3 pts | -14.6% | +11.5% |
| 10 years | +50.6% | +308.2% | −257.6 pts | +4.2% | +15.1% |
Fifteen years at a glance
Fiscal years 2011 to 2025 and trailing twelve months, USD
Revenue
Gross profit
Operating income
Net income
EPS, diluted
Free cash flow
Press releases
Releases Power Integrations filed with the SEC as exhibits to Form 8-K or 6-K
- Results
- Results
- Results
- Results
- Results
- Results
About Power Integrations
Semiconductors & Related Devices
Power Integrations, Inc. develops and markets analog and mixed-signal integrated circuits along with related electronic components used in high-voltage power conversion. The company specializes in system-level products such as AC-DC power supply integrated circuits, high-voltage gate drivers, LED drivers, and motor-driver chips for brushless DC motors. These power-conversion solutions serve four primary end markets: consumer appliances, industrial systems, computer equipment, and communications hardware. Customers consist primarily of original equipment manufacturers and merchant power-supply makers, reached through both a direct sales organization and a worldwide network of independent distributors and sales representatives.
Company profile, executives and historyPower Integrations stock: common questions
What is Power Integrations's stock price?
POWI closed at $44.18 on Nov 13, 2026, down 4.08% on the day. Over the past 52 weeks it traded between $30.86 and $91.18.
What is Power Integrations's market cap?
Power Integrations was worth $2.47B at the close on Nov 13, 2026: the share price times the diluted shares outstanding.
What is POWI's P/E ratio?
POWI trades at 55.9 times earnings, based on diluted earnings per share of $0.79 over the twelve months to Sep 30, 2026.
How much revenue does Power Integrations make?
Power Integrations reported revenue of $455.93M for the twelve months to Sep 30, 2026, up 2.3% from a year earlier.
Does Power Integrations pay a dividend?
No. Power Integrations has not paid a cash dividend over the last twelve months.
When does Power Integrations report earnings next?
Power Integrations is expected to report Q4 FY2026 results on Feb 4, 2027, during market hours. The date is estimated from its past reporting pattern until the company confirms it.
How has POWI stock performed over the past year?
Including dividends, POWI returned +29.4% over the past year, against +13.5% for the S&P 500.
How many POWI shares are sold short?
5M shares were sold short at the latest FINRA report, 8.70% of the float, or 6.7 days of average trading volume.
Who are Power Integrations's competitors?
Companies most similar to Power Integrations by business, industry and size include AOSL, LSCC, MXL, SLAB, SITM.
See a number that looks wrong?