STM vs. UCTT

Last updated Apr 1, 2026

Compare and contrast key facts about STMicroelectronics N.V. (STM) and Ultra Clean Holdings, Inc. (UCTT).

Performance

STM vs. UCTT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in STMicroelectronics N.V. (STM) and Ultra Clean Holdings, Inc. (UCTT). The values are adjusted to include any dividend payments, if applicable.

STM vs. UCTT - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
STM STMicroelectronics N.V.	33.57%	5.28%	-49.67%	41.66%	-26.76%	32.39%	38.91%	96.34%	-35.65%	94.77%
UCTT Ultra Clean Holdings, Inc.	145.48%	-29.54%	5.30%	2.99%	-42.21%	84.14%	32.72%	177.10%	-63.32%	138.04%

Fundamentals

Market Cap STM : $30.75B UCTT : $2.82B
EPS STM : $0.28 UCTT : -$4.00
PS Ratio STM : 2.63 UCTT : 1.37
PB Ratio STM : 1.72 UCTT : 3.96
Total Revenue (TTM) STM : $11.84B UCTT : $2.05B
Gross Profit (TTM) STM : $4.01B UCTT : $322.90M
EBITDA (TTM) STM : $2.41B UCTT : -$50.30M

Returns By Period

In the year-to-date period, STM achieves a 33.57% return, which is significantly lower than UCTT's 145.48% return. Over the past 10 years, STM has underperformed UCTT with an annualized return of 21.41%, while UCTT has yielded a comparatively higher 27.80% annualized return.

STM

• 1D: 10.31%
• 1M: 3.09%
• YTD: 33.57%
• 6M: 23.02%
• 1Y: 59.31%
• 3Y*: -12.68%
• 5Y*: -1.74%
• 10Y*: 21.41%

UCTT

• 1D: 11.25%
• 1M: 2.47%
• YTD: 145.48%
• 6M: 128.18%
• 1Y: 190.43%
• 3Y*: 23.31%
• 5Y*: -0.46%
• 10Y*: 27.80%

*Multi-year figures are annualized to reflect compound growth (CAGR)

Return for Risk

STM vs. UCTT — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

STM

STM Risk / Return Rank: 74
STM Sharpe Ratio Rank: 77
STM Sortino Ratio Rank: 74
STM Omega Ratio Rank: 75
STM Calmar Ratio Rank: 73
STM Martin Ratio Rank: 72

UCTT

UCTT Risk / Return Rank: 93
UCTT Sharpe Ratio Rank: 95
UCTT Sortino Ratio Rank: 91
UCTT Omega Ratio Rank: 88
UCTT Calmar Ratio Rank: 96
UCTT Martin Ratio Rank: 95

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

STM vs. UCTT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for STMicroelectronics N.V. (STM) and Ultra Clean Holdings, Inc. (UCTT). 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.

	STM	UCTT	Difference
Sharpe ratio Return per unit of total volatility	1.08	2.61	-1.53
Sortino ratio Return per unit of downside risk	1.73	2.94	-1.22
Omega ratio Gain probability vs. loss probability	1.24	1.37	-0.13
Calmar ratio Return relative to maximum drawdown	1.59	6.14	-4.54
Martin ratio Return relative to average drawdown	3.60	16.06	-12.46
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

STM vs. UCTT - Sharpe Ratio Comparison

The current STM Sharpe Ratio is 1.08, which is lower than the UCTT Sharpe Ratio of 2.61. The chart below compares the historical Sharpe Ratios of STM and UCTT, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	STM	UCTT	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.08	2.61	-1.53
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.04	-0.01	-0.03
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.49	0.48	+0.01
Sharpe Ratio (All Time) Calculated using the full available price history	0.20	0.16	+0.03

Correlation

The correlation between STM and UCTT is 0.45, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

STM vs. UCTT - Dividend Comparison

STM's dividend yield for the trailing twelve months is around 1.04%, while UCTT has not paid dividends to shareholders.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
STM STMicroelectronics N.V.	1.04%	1.39%	1.32%	0.48%	0.67%	0.45%	0.50%	0.89%	1.73%	0.98%	2.10%	5.11%
UCTT Ultra Clean Holdings, 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%

Drawdowns

STM vs. UCTT - Drawdown Comparison

The maximum STM drawdown since its inception was -94.40%, roughly equal to the maximum UCTT drawdown of -95.20%. Use the drawdown chart below to compare losses from any high point for STM and UCTT.

Drawdown Indicators

	STM	UCTT	Difference
Max Drawdown Largest peak-to-trough decline	-94.40%	-95.20%	+0.80%
Max Drawdown (1Y) Largest decline over 1 year	-36.35%	-29.74%	-6.61%
Max Drawdown (5Y) Largest decline over 5 years	-66.66%	-72.56%	+5.90%
Max Drawdown (10Y) Largest decline over 10 years	-66.66%	-79.34%	+12.68%
Current Drawdown Current decline from peak	-34.41%	-13.59%	-20.82%
Average Drawdown Average peak-to-trough decline	-55.49%	-46.71%	-8.78%
Ulcer Index Depth and duration of drawdowns from previous peaks	16.08%	11.36%	+4.72%

Volatility

STM vs. UCTT - Volatility Comparison

The current volatility for STMicroelectronics N.V. (STM) is 18.64%, while Ultra Clean Holdings, Inc. (UCTT) has a volatility of 26.31%. This indicates that STM experiences smaller price fluctuations and is considered to be less risky than UCTT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	STM	UCTT	Difference
Volatility (1M) Calculated over the trailing 1-month period	18.64%	26.31%	-7.67%
Volatility (6M) Calculated over the trailing 6-month period	35.35%	54.04%	-18.69%
Volatility (1Y) Calculated over the trailing 1-year period	55.35%	73.64%	-18.29%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	43.15%	57.78%	-14.63%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	43.64%	58.23%	-14.59%

Financials

STM vs. UCTT - Profitability Comparison

The chart below illustrates the profitability comparison between STMicroelectronics N.V. and Ultra Clean Holdings, Inc. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

STM - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, STMicroelectronics N.V. reported a gross profit of 1.46B and revenue of 3.38B. Therefore, the gross margin over that period was 43.3%.

UCTT - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Ultra Clean Holdings, Inc. reported a gross profit of 77.20M and revenue of 506.60M. Therefore, the gross margin over that period was 15.2%.

STM - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, STMicroelectronics N.V. reported an operating income of 206.85M and revenue of 3.38B, resulting in an operating margin of 6.1%.

UCTT - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Ultra Clean Holdings, Inc. reported an operating income of 10.90M and revenue of 506.60M, resulting in an operating margin of 2.2%.

STM - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, STMicroelectronics N.V. reported a net income of -29.98M and revenue of 3.38B, resulting in a net margin of -0.9%.

UCTT - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Ultra Clean Holdings, Inc. reported a net income of -3.30M and revenue of 506.60M, resulting in a net margin of -0.7%.