LIVE
STM
STMicroelectronics N.V. · Technology
$78.39
+28.03% this month
VERSUS
⟷
COMPARE
ON
ON Semiconductor Corporation · Technology
$121.62
+14.71% this month
Scoreboard verdict
Across AI score, momentum, valuation, upside, operating margin
STM
1
ON
3
Comparison scoreboard
ON LEADS 3/5AI Score
STM 60.2
ON ✓61.4
1Y Return
STM ✓+173.53%
ON +129.73%
Fwd P/E
STM 31.89
ON ✓27.38
Target Up.
STM -17.90%
ON ✓-8.97%
Op. Margin
STM N/A
ON 18.23%
Metrics last refreshed: 6/20/2026
Quick take
STM vs ON Stock Comparison: AI Score, Valuation, Performance and Upside
STM and onsemi are both diversified IDMs competing directly in SiC power devices for EV drivetrains, alongside industrial microcontrollers (STM) and CMOS image sensors (onsemi) as secondary businesses. STM has the stronger SiC anchor position via Tesla; onsemi has more geographic customer diversification and the image sensor differentiation. Both are experiencing near-term headwinds from automotive and industrial inventory corrections.
STM vs ON is a comparison between the European SiC leader with a strategic Tesla anchor and a U.S. SiC challenger with more diversified automotive OEM relationships and image sensor exposure — both are credible long-term EV power semiconductor leaders, but with different risk concentrations.
Live analysis · updated 6/20/2026
ON holds the edge across 3 of 5 key metrics in this comparison. STM has delivered stronger 1-year price return (+173.53% vs +129.73%), though ON trades at the lower forward P/E (27.38x vs 31.89x). Analyst consensus implies meaningfully more upside for ON (-8.97%) than for STM (-17.90%).
Normalized 1Y performance
STM
ON
Recent returns
STM
ON
Analyst price targets & sentiment
STM · 13 analysts
STRONG BUYHOLDSTRONG SELL
Buy (2.0/5.0)
Price target range
analyst low$32.80
analyst high$100.00
analyst mean$64.36
current price$78.39
-17.9% upside to analyst mean
ON · 29 analysts
Price target range
analyst low$33.00
analyst mean$106.31
current price$121.62
-9.0% upside to analyst mean
Who should consider this stock?
STM may suit investors who:
- →prefer a European IDM with deep Tesla SiC supply relationships and STM32 MCU market leadership
- →value exposure to European automotive OEM EV programs through a European supply chain champion
- →want combined SiC power device and microcontroller exposure to EV and industrial automation megatrends
- →are comfortable with Tesla volume concentration risk and European semiconductor geopolitical dynamics
ON may suit investors who:
- →prefer a U.S.-based SiC competitor with geographically diversified automotive OEM design wins across North America, Europe, and Korea
- →value CMOS image sensor exposure to ADAS and industrial vision as a second growth driver uncorrelated to SiC
- →want EV semiconductor exposure with better customer diversification than STM's Tesla concentration
- →are comfortable with slower-than-projected SiC revenue ramp and automotive channel inventory correction headwinds
Performance & AI score
| Metric | STM | ON |
|---|---|---|
| AI score | 60.2 | 61.4 |
| AI rank | #158 | #138 |
| Latest close | $78.39 | $121.62 |
| 1M return | +28.03% | +14.71% |
| 6M return | +207.68% | +128.05% |
| 1Y return | +173.53% | +129.73% |
$10,000 invested — hypothetical growth (dividends reinvested)
How much would $10,000 be worth today if invested at the start of each period, with all dividends reinvested?
| Period | STM | ON |
|---|---|---|
| 1Y ago | $27.7K (+177.0%) started 2025-06-18 | $23.27K (+132.7%) started 2025-06-18 |
| 5Y ago | $23.75K (+137.5%) started 2021-06-18 | $33.33K (+233.3%) started 2021-06-21 |
| 10Y ago | $167.21K (+1572.1%) started 2016-06-20 | $124.36K (+1143.6%) started 2016-06-20 |
Hypothetical — past performance does not guarantee future results.
Valuation & upside potential
| Metric | STM | ON |
|---|---|---|
| Market cap | $69.67B | $45.41B |
| Trailing P/E | 489.94 | 86.51 |
| Forward P/E | 31.89 | 27.38 |
| Price/Sales | 5.63 | 3.15 |
| EV/Revenue | 5.24 | 7.69 |
| Analyst target | $64.36 | $106.31 |
| Target upside | -17.90% | -8.97% |
Growth, profitability & risk
| Metric | STM | ON |
|---|---|---|
| Revenue growth | 23.00% | 4.70% |
| Earnings growth | -33.30% | -48.70% |
| EPS growth | -33.30% | -48.70% |
| FCF margin | -2.91% | +21.15% |
| Operating margin | N/A | 18.23% |
| Profit margin | 1.19% | 9.46% |
| ROIC proxy | 0.91% | 7.49% |
| Return on equity | 0.91% | 7.49% |
| Dividend yield | 0.49% | N/A |
| Beta | 1.56 | 1.98 |
| Debt/equity | 15.32 | 44.34 |
| Current ratio | 3.31 | 4.87 |
| Quick ratio | 2.22 | 2.80 |
Drawdown & downside risk
Lower drawdown and smaller single-period drops generally indicate a smoother ride, though they do not guarantee lower future risk.
1Y risk snapshot
STM max drawdown36.35%
ON max drawdown28.10%
STM max wkly drop20.56%
ON max wkly drop19.08%
5Y risk snapshot
STM max drawdown66.66%
ON max drawdown70.44%
STM max wkly drop20.56%
ON max wkly drop26.38%
10Y risk snapshot
STM max drawdown66.66%
ON max drawdown70.44%
STM max wkly drop30.46%
ON max wkly drop43.93%
Performance metrics by period
| Period | Metric | STM | ON |
|---|---|---|---|
| 1Y | Growth | +173.53% | +132.72% |
| CAGR | +173.71% | +133.00% | |
| Sharpe ratio | 2.05 | 1.73 | |
| Max drawdown | 36.35% | 28.10% | |
| Max daily drop | 15.86% | 15.58% | |
| Max wkly drop | 20.56% | 19.08% | |
| 5Y | Growth | +127.50% | +233.30% |
| CAGR | +17.87% | +27.27% | |
| Sharpe ratio | 0.49 | 0.64 | |
| Max drawdown | 66.66% | 70.44% | |
| Max daily drop | 15.86% | 21.77% | |
| Max wkly drop | 20.56% | 26.38% | |
| 10Y | Growth | +1400.24% | +1143.56% |
| CAGR | +31.13% | +28.69% | |
| Sharpe ratio | 0.73 | 0.66 | |
| Max drawdown | 66.66% | 70.44% | |
| Max daily drop | 18.95% | 26.84% | |
| Max wkly drop | 30.46% | 43.93% |
Business comparison
| Category | STM | ON |
|---|---|---|
| Company | STMicroelectronics N.V. | ON Semiconductor Corporation |
| Sector | Technology | Technology |
| Industry | N/A | Semiconductors |
| Core business | STMicroelectronics is a European IDM (integrated device manufacturer) producing microcontrollers (STM32), SiC power devices, general-purpose analog, automotive ICs, and sensors. STM's SiC strategy has been one of the most aggressive in the industry — it supplies SiC MOSFETs and modules to Tesla Model 3/Y inverters and is ramping additional automotive OEM relationships. Revenue is roughly 45% automotive, 45% industrial, and the remainder consumer/personal electronics. STM manufactures in its own fabs in France, Italy, Singapore, and Morocco. | ON Semiconductor (onsemi) is a U.S.-based IDM producing SiC power modules (EliteSiC), CMOS image sensors for ADAS, and power management ICs for automotive and industrial markets. Onsemi's SiC business competes directly with STM, targeting 800V EV drivetrains with its EliteSiC MOSFETs and modules. The company has secured automotive Tier 1 design wins at BMW, Honda, Volkswagen, and others. Its CMOS image sensor business (used in automotive cameras and industrial vision) provides meaningful revenue diversification. |
| Investor focus | Investors focus on SiC revenue growth and the pace of automotive EV design-win conversions, microcontroller revenue recovery from industrial inventory corrections, gross margin improvement as SiC production yields improve, and the multi-year $5B+ SiC capacity expansion plan. | Investors focus on EliteSiC automotive design-win conversion to revenue, image sensor ADAS revenue growth, gross margin trends as SiC production scales, and the timing of industrial inventory channel recovery. |
STM strengths
- →Deep strategic relationship with Tesla (sole SiC supplier for Model 3/Y inverters) provides a large, visible revenue anchor
- →STM32 microcontroller franchise is one of the most embedded MCU platforms globally, with broad industrial and IoT design-in momentum
- →European IDM structure gives exposure to European OEM EV programs (Stellantis, Renault, VW Group) that prefer European supply chains
ON strengths
- →EliteSiC design wins span North American, European, and Korean automotive OEMs, providing geographic diversification STM lacks at Tesla-like scale
- →CMOS image sensor business serves ADAS and industrial vision markets, providing revenue diversification absent from STM
- →U.S.-based operations benefit from CHIPS Act incentives for domestic semiconductor manufacturing
Risks to watch — STM
- →Tesla SiC revenue concentration is a double-edged sword — Tesla volume growth drives STM SiC revenue but Tesla's own SiC ambitions create future transition risk
- →SiC gross margins are still below corporate average as yield improvement and production ramp continue
- →Industrial microcontroller market has experienced a deep inventory correction that has weighed heavily on revenue since 2023
Risks to watch — ON
- →SiC revenue ramp has been slower than management projected due to automotive channel inventory correction
- →STM has a significant head start in SiC via Tesla relationships — onsemi must compete for sockets in new EV platform launches
- →General automotive and industrial end-market weakness has weighed on overall revenue beyond just SiC
Frequently asked questions
Free public comparison
Want deeper AI forecasts?
This comparison page is public and free forever. Subscribers can unlock saved watchlists, full AI rankings, detailed forecasts, and interactive analysis tools.
Related comparisons
More comparisons
Browse all 1,000 comparisons →