As at Aug 21, 2026, the POWI stock has a price-to-earnings ratio of 122.62. This is based on the current EPS of $0.45 and the stock price of $55.18 per share. A decrease of 16% has been recorded in the P/E ratio compared to the average of 145.9 of the last 4 quarters.
The mean historical PE ratio of Power Integrations over the last ten years is 59.97. The current 122.62 PE ratio is 104% above the historical average. In the past ten years, POWI's PE ratio was at its highest in the Jun 2026 quarter at 186.13, with a price of $83.76 and an EPS of $0.45. The Mar 2020 quarter recorded the bottom point at 12.76, with a price of $44.17 and an EPS of $3.46.
Maximum annual increase: 360.44% in 2020
Maximum annual decrease: -67.25% in 2018
| Year | PE ratio | PE change | Price | EPS |
|---|---|---|---|---|
| 2025 | 91.13 | -15.82% | $35.54 | $0.39 |
| 2024 | 108.25 | 27.88% | $61.7 | $0.57 |
| 2023 | 84.65 | 249.36% | $82.11 | $0.97 |
| 2022 | 24.23 | -28.8% | $71.72 | $2.96 |
| 2021 | 34.03 | -50.53% | $92.89 | $2.73 |
| 2020 | 68.79 | 360.44% | $81.86 | $1.19 |
| 2019 | 14.94 | -41.69% | $49.46 | $3.31 |
| 2018 | 25.62 | -67.25% | $30.49 | $1.19 |
| 2017 | 78.24 | 93.71% | $36.78 | $0.47 |
| 2016 | 40.39 | 12.95% | $33.93 | $0.84 |
| 2015 | 35.76 | 36.85% | $24.32 | $0.68 |
| 2014 | 26.13 | -9.18% | $25.87 | $0.99 |
| 2013 | 28.77 | N/A | $27.91 | $0.97 |
| 2012 | N/A | N/A | $16.81 | -$0.6 |
| 2011 | 27.63 | 22.47% | $16.58 | $0.6 |
| Year | PE ratio | PE change | Price | EPS |
|---|---|---|---|---|
| Jun 2026 | 186.13 | 5.43% | $83.76 | $0.45 |
| Mar 2026 | 176.55 | 93.73% | $51.2 | $0.29 |
| Dec 2025 | 91.13 | -29.74% | $35.54 | $0.39 |
| Sep 2025 | 129.71 | 34.58% | $40.21 | $0.31 |
| Jun 2025 | 96.38 | 24.06% | $55.9 | $0.58 |
| Mar 2025 | 77.69 | -28.23% | $50.5 | $0.65 |
| Dec 2024 | 108.25 | 11.43% | $61.7 | $0.57 |
| Sep 2024 | 97.15 | 3.8% | $64.12 | $0.66 |
| Jun 2024 | 93.59 | 20.34% | $70.19 | $0.75 |
| Mar 2024 | 77.77 | -8.13% | $71.55 | $0.92 |
| Dec 2023 | 84.65 | 25.35% | $82.11 | $0.97 |
| Sep 2023 | 67.53 | 13.42% | $76.31 | $1.13 |
| Jun 2023 | 59.54 | 61.79% | $94.67 | $1.59 |
| Mar 2023 | 36.8 | 51.88% | $84.64 | $2.3 |
| Dec 2022 | 24.23 | 21.7% | $71.72 | $2.96 |
The Historical Valuation Regime chart shows where the stock's current valuation sits relative to its own historical valuation range over the selected lookback period.
This is a history-relative tool, not a market-relative percentile. It does not compare the stock to other companies. Instead, it compares each historical valuation reading to the stock's own past readings.
The threshold lines are calculated them from the stock's real historical values using percentile interpolation. That is why some colored bands are narrow while others are wide: the band widths reflect how the stock actually traded through time.
| Historical percentile | Regime | Chart meaning |
|---|---|---|
| 0-10 | Historically Low | Deep cheap zone |
| >10-25 | Below Average | Cheap relative to history |
| >25-75 | Average | Within the normal historical range |
| >75-90 | Above Average | Expensive relative to history |
| >90-100 | Historically High | Extreme or stretched valuation |
| Chart element | What it tells you |
|---|---|
| Main line | The actual historical valuation values over time for the selected metric. |
| Dashed horizontal lines | The stock's computed P10, P25, Median, P75, and P90 thresholds for the selected period. |
| Colored bands | The historical valuation zones between those thresholds. |
| Metric boxes | Current ratio, historical median, current percentile, and current regime. |
| Timeline strip | A condensed regime history showing how the stock moved between cheap, fair, and expensive states across each observation. |
Current Percentile is the percentile rank of the latest valid historical observation within the selected lookback range.
Current Regime is assigned directly from the latest observation's percentile bucket using the fixed 10 / 25 / 75 / 90 cutoffs shown above.
This chart is most useful for answering a narrow question: Is this stock trading high, low, or normal relative to its own history? It works best alongside growth, profitability, and forward-looking business analysis, because a stock can deserve a higher or lower regime if its business quality has changed.
Currently, POWI's PE ratio is greater than its 3, 5 and 10-year historical averages.
Power Integrations's P/E of 122.62 is above the Technology sector, the industry and its peers average. Compared to its Technology sector average of 32.38, Power Integrations's P/E is 279% higher.
POWI stock has a price to earnings ratio of 122.62 as of Aug 21, 2026.
The average PE ratio for POWI stock over the past 3 years is 107.21.
The average PE ratio for POWI stock over the past 5 years is 77.86.
Over the last ten years, the quarterly PE ratio reached a historic high of 186.13 in the Jun 2026 quarter.
POWI's current price to earnings ratio is 104% above its 10-year historical average.
POWI's PE ratio of 122.62 is considered high because the company's stock price is trading at a higher multiple of earnings.
To determine the PE ratio, divide the most recent stock price by the TTM earnings per share (EPS). As of today (Aug 21, 2026), Power Integrations's stock price is $55.18. The earnings per share for the trailing twelve months (TTM) ending Jun 2026 is $0.45. Therefore, Power Integrations's P/E ratio for today is 122.62. PE RATIO(122.62) = STOCK PRICE($55.18) / TTM EPS($0.45)
All PE ratio stats are based on quarterly TTM periods, unless otherwise specified.