STM vs. AMBA
STM (STMicroelectronics N.V.) and AMBA (Ambarella, Inc.) are both stocks. Both are in the Technology sector — STM in Semiconductors, AMBA in Semiconductor Equipment & Materials. Over the past 10 years, STM returned 23.44%/yr vs 4.28%/yr for AMBA. Their 0.49 correlation means their historical movements had little consistent relationship.
Performance
STM vs. AMBA - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, STM achieves a 102.77% return, which is significantly higher than AMBA's 21.40% return. Over the past 10 years, STM has outperformed AMBA with an annualized return of 23.44%, while AMBA has yielded a comparatively lower 4.28% annualized return.
STM
- 1D
- -1.26%
- 1M
- -25.92%
- 6M
- 88.59%
- YTD
- 102.77%
- 1Y
- 108.20%
- 3Y*
- 0.24%
- 5Y*
- 5.77%
- 10Y*
- 23.44%
- ALL TIME*
- 10.37%
AMBA
- 1D
- 16.08%
- 1M
- -2.65%
- 6M
- 34.29%
- YTD
- 21.40%
- 1Y
- 30.13%
- 3Y*
- 0.78%
- 5Y*
- -2.68%
- 10Y*
- 4.28%
- ALL TIME*
- 20.30%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
AMBA Ambarella, Inc. | $192.92M | $151.48M | $136.93M |
| $760.73M | $779.02M | $847.43M |
STM vs. AMBA - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
STM STMicroelectronics N.V. | 102.77% | 5.28% | -49.67% | 41.66% | -26.76% | 32.39% | 38.91% | 96.34% | -35.65% | 94.77% |
AMBA Ambarella, Inc. | 21.40% | -2.61% | 18.68% | -25.47% | -59.47% | 120.96% | 51.62% | 73.13% | -40.46% | 8.54% |
Correlation
The correlation between STM and AMBA is 0.58, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.58 |
Correlation (3Y) Balances recent behavior with more history. | 0.56 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.65 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.57 |
Correlation (All Time) Calculated using the full available price history since Oct 10, 2012 | 0.49 |
The correlation between STM and AMBA shifts across timeframes, from 0.49 (all time) to 0.65 (5 years), reflecting how their relationship changes across market environments.
Fundamentals
STM:
$46.76B
AMBA:
$3.77B
STM:
$0.49
AMBA:
-$1.62
STM:
3.78
AMBA:
9.15
STM:
2.76
AMBA:
6.19
STM:
$13.08B
AMBA:
$405.19M
STM:
$4.49B
AMBA:
$238.32M
STM:
$2.21B
AMBA:
-$69.43M
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
STM vs. AMBA — Risk / Return Rank
STM
AMBA
STM vs. AMBA - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for STMicroelectronics N.V. (STM) and Ambarella, Inc. (AMBA). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| STM | AMBA | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.45 | ||
| Sortino ratioReturn per unit of downside risk | +1.29 | ||
| Omega ratioGain probability vs. loss probability | 1.33 | 1.15 | +0.18 |
| Calmar ratioReturn relative to maximum drawdown | 2.76 | 0.62 | +2.14 |
| Martin ratioReturn relative to average drawdown | 9.16 | 1.19 | +7.98 |
Loading charts...
Drawdowns
STM vs. AMBA - Drawdown Comparison
The maximum STM drawdown since its inception was -94.40%, which is greater than AMBA's maximum drawdown of -81.65%. Use the drawdown chart below to compare losses from any high point for STM and AMBA.
Loading charts...
Drawdown Indicators
| STM | AMBA | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -94.40% | -81.65% | -12.75% |
Max Drawdown (1Y)Largest decline over 1 year | -39.41% | -49.06% | +9.65% |
Max Drawdown (3Y)Largest decline over 3 years | -65.26% | -51.41% | -13.85% |
Max Drawdown (5Y)Largest decline over 5 years | -66.66% | -81.65% | +14.99% |
Max Drawdown (10Y)Largest decline over 10 years | -66.66% | -81.65% | +14.99% |
Current DrawdownCurrent decline from peak | -34.36% | -60.34% | +25.98% |
Average DrawdownAverage peak-to-trough decline | -55.03% | -48.60% | -6.43% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 11.85% | 25.45% | -13.60% |
Volatility
STM vs. AMBA - Volatility Comparison
The current volatility for STMicroelectronics N.V. (STM) is 28.39%, while Ambarella, Inc. (AMBA) has a volatility of 30.03%. This indicates that STM experiences smaller price fluctuations and is considered to be less risky than AMBA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| STM | AMBA | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 28.39% | 30.03% | -1.64% |
Volatility (6M)Calculated over the trailing 6-month period | 51.19% | 60.80% | -9.61% |
Volatility (1Y)Calculated over the trailing 1-year period | 59.10% | 76.25% | -17.15% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 47.04% | 65.85% | -18.81% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 45.13% | 58.34% | -13.21% |
Dividends
STM vs. AMBA - Dividend Comparison
STM's dividend yield for the trailing twelve months is around 0.69%, while AMBA has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AMBA Ambarella, Inc. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
STM STMicroelectronics N.V. | 0.69% | 1.39% | 1.32% | 0.48% | 0.67% | 0.45% | 0.50% | 0.89% | 1.73% | 0.98% | 2.10% | 5.11% |
Financials
STM vs. AMBA - Financials Comparison
This section allows you to compare key financial metrics between STMicroelectronics N.V. and Ambarella, Inc.. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
STM vs. AMBA - Profitability Comparison
STM - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, STMicroelectronics N.V. reported a gross profit of 1.22B and revenue of 3.49B. Therefore, the gross margin over that period was 34.8%.
AMBA - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, Ambarella, Inc. reported a gross profit of 58.59M and revenue of 100.36M. Therefore, the gross margin over that period was 58.4%.
STM - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, STMicroelectronics N.V. reported an operating income of 220.00M and revenue of 3.49B, resulting in an operating margin of 6.3%.
AMBA - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, Ambarella, Inc. reported an operating income of -19.42M and revenue of 100.36M, resulting in an operating margin of -19.4%.
STM - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, STMicroelectronics N.V. reported a net income of 222.00M and revenue of 3.49B, resulting in a net margin of 6.4%.
AMBA - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, Ambarella, Inc. reported a net income of -18.09M and revenue of 100.36M, resulting in a net margin of -18.0%.
Frequently Asked Questions
STM and AMBA have a correlation of 0.58, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
AMBA has higher volatility (30.03%) compared to STM (28.39%). In terms of maximum drawdown, STM dropped -94.40% vs AMBA's -81.65%.
STM currently has the higher Sharpe Ratio (1.84 vs 0.40), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
Find the right allocation for STM and AMBA
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer