STM
ST Microelectronics
PE ratio, current and historical analysis
- Stocks
- Technology
- NYSE: STM
- PE Ratio
The price-to-earnings ratio for ST Microelectronics stock stands at 79.22 as of Oct 31, 2026. This is calculated based on the current EPS of $0.59 and the stock price of $46.74 per share. A decrease of 42% has been recorded in the PE ratio compared to the average of 137.7 of the past four quarters.
STM PE ratio history
Over the last ten years, the average PE ratio of ST Microelectronics has been 32.32. The current 79.22 price-to-earnings ratio is 145% more than the historical average. In the past ten years, STM's PE ratio reached its highest point in the Mar 2026 quarter at 191.41, with a price of $32.54 and an EPS of $0.17. The Oct 2022 quarter saw the lowest point at 8.1, with a price of $30.94 and an EPS of $3.82.
ST Microelectronics PE ratio by year
Maximum annual increase: 846.15% in 2025
Maximum annual decrease: -63.2% in 2022
| Year | PE ratio | PE change | Price | EPS |
|---|---|---|---|---|
| 2025 | 136.53 | 846.15% | $25.94 | $0.19 |
| 2024 | 14.43 | 34.11% | $24.97 | $1.73 |
| 2023 | 10.76 | 32.19% | $50.13 | $4.66 |
| 2022 | 8.14 | -63.2% | $35.57 | $4.37 |
| 2021 | 22.12 | -26.12% | $48.88 | $2.21 |
| 2020 | 29.94 | 27.95% | $37.12 | $1.24 |
| 2019 | 23.4 | 140.99% | $26.91 | $1.15 |
| 2018 | 9.71 | -59.54% | $13.88 | $1.43 |
| 2017 | 24 | -59.83% | $21.84 | $0.91 |
| 2016 | 59.74 | 7.64% | $11.35 | $0.19 |
| 2015 | 55.5 | 4.01% | $6.66 | $0.12 |
| 2014 | 53.36 | N/A | $7.47 | $0.14 |
| 2013 | N/A | N/A | $8 | -$0.56 |
| 2012 | N/A | N/A | $7.24 | -$1.31 |
| 2011 | 8.01 | -27.9% | $5.93 | $0.74 |
ST Microelectronics PE ratio by quarter (TTM)
| Year | PE ratio | PE change | Price | EPS |
|---|---|---|---|---|
| Sep 2026 | 88.02 | -34.68% | $51.93 | $0.59 |
| Jun 2026 | 134.75 | -29.6% | $71.42 | $0.53 |
| Mar 2026 | 191.41 | 40.2% | $32.54 | $0.17 |
| Dec 2025 | 136.53 | 192.54% | $25.94 | $0.19 |
| Sep 2025 | 46.67 | 11.62% | $28 | $0.6 |
| Jun 2025 | 41.81 | 130.23% | $30.1 | $0.72 |
| Mar 2025 | 18.16 | 25.85% | $22.15 | $1.22 |
| Dec 2024 | 14.43 | 20.75% | $24.97 | $1.73 |
| Sep 2024 | 11.95 | 1.88% | $30.36 | $2.54 |
| Jun 2024 | 11.73 | 10.45% | $39.28 | $3.35 |
| Mar 2024 | 10.62 | -1.3% | $43.24 | $4.07 |
| Dec 2023 | 10.76 | 20.9% | $50.13 | $4.66 |
| Sep 2023 | 8.9 | -13.51% | $43.16 | $4.85 |
| Jul 2023 | 10.29 | -9.42% | $49.99 | $4.86 |
| Apr 2023 | 11.36 | 39.56% | $53.49 | $4.71 |
STM Price vs fair value
STM average PE ratio chart
What this chart measures
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.
Percentile logic
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.
Regime map
| 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 |
How to read each part
| 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. |
Important metric definitions
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.
How to use it well
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, STM's PE ratio is above its 3, 5 and 10-year historical averages.
PE comparison
With a P/E of 79.22, STM stands above the Technology sector, the industry and its peers average. Looking at its Technology sector average of 30.28, ST Microelectronics's P/E is 162% higher.
STM PE vs peers
Frequently asked questions
What is ST Microelectronics's PE ratio?
STM's price to earnings ratio is 79.22 as of Oct 31, 2026.
What is the 3-year average PE ratio for ST Microelectronics (STM)?
The average PE ratio for STM stock over the past 3 years is 59.74.
What is the 5-year average PE ratio for ST Microelectronics (STM)?
The average PE ratio for STM stock over the past 5 years is 40.59.
What is the highest PE ratio for STM?
Over the last ten years, the quarterly PE ratio reached a historic high of 191.41 in the Mar 2026 quarter.
How does the current PE ratio for STM compare to its historical average?
The current price to earnings ratio of STM is 145% higher than the 10-year historical average.
Why is ST Microelectronics's PE ratio so high?
STM's PE ratio is high because the stock price is relatively expensive compared to the earnings generated by the company.
How is STM's PE ratio calculated (ST Microelectronics PE ratio formula)?
The P/E ratio is calculated by taking the latest stock price and dividing it by the earnings per share(EPS) for the last 12 months. As of today (Oct 31, 2026), ST Microelectronics's stock price is $46.74. The earnings per share for the trailing twelve months (TTM) ending Sep 2026 is $0.59. Therefore, ST Microelectronics's price to earnings ratio for today is 79.22. PE RATIO(79.22) = STOCK PRICE($46.74) / TTM EPS($0.59)
All PE ratio stats are based on quarterly TTM periods, unless otherwise specified.