UCTT vs. ONTO
UCTT (Ultra Clean Holdings, Inc.) and ONTO (Onto Innovation Inc.) are both stocks. Both operate in the Semiconductor Equipment & Materials industry within the Technology sector. Over the past 10 years, UCTT returned 29.65%/yr vs 29.21%/yr for ONTO. Their 0.49 correlation means their historical movements had little consistent relationship.
Performance
UCTT vs. ONTO - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, UCTT achieves a 228.90% return, which is significantly higher than ONTO's 63.80% return. Both investments have delivered pretty close results over the past 10 years, with UCTT having a 29.65% annualized return and ONTO not far behind at 29.21%.
UCTT
- 1D
- 0.10%
- 1M
- -21.76%
- 6M
- 90.73%
- YTD
- 228.90%
- 1Y
- 273.59%
- 3Y*
- 31.07%
- 5Y*
- 9.05%
- 10Y*
- 29.65%
- ALL TIME*
- 11.71%
ONTO
- 1D
- 3.22%
- 1M
- -15.93%
- 6M
- 27.98%
- YTD
- 63.80%
- 1Y
- 174.21%
- 3Y*
- 28.03%
- 5Y*
- 29.84%
- 10Y*
- 29.21%
- ALL TIME*
- 15.74%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $295.69M | $343.45M | $385.27M | |
| $116.82M | $144.23M | $132.60M |
UCTT vs. ONTO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
UCTT Ultra Clean Holdings, Inc. | 228.90% | -29.54% | 5.30% | 2.99% | -42.21% | 84.14% | 32.72% | 177.10% | -63.32% | 138.04% |
ONTO Onto Innovation Inc. | 63.80% | -5.29% | 9.01% | 124.56% | -32.74% | 112.89% | 30.13% | 33.70% | 9.67% | -0.56% |
Correlation
The correlation between UCTT and ONTO is 0.76, 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. | 0.76 |
Correlation (3Y) Balances recent behavior with more history. | 0.73 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.75 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.70 |
Correlation (All Time) Calculated using the full available price history since Mar 25, 2004 | 0.49 |
Over the past year, UCTT and ONTO have become more correlated (0.76) than their long-term average of 0.49, meaning their price movements have been converging.
Fundamentals
UCTT:
$3.73B
ONTO:
$12.86B
UCTT:
-$4.28
ONTO:
$2.15
UCTT:
1.83
ONTO:
12.43
UCTT:
6.01
ONTO:
6.06
UCTT:
$2.07B
ONTO:
$1.03B
UCTT:
$323.40M
ONTO:
$502.93M
UCTT:
-$53.90M
ONTO:
$177.93M
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
UCTT vs. ONTO — Risk / Return Rank
UCTT
ONTO
UCTT vs. ONTO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Ultra Clean Holdings, Inc. (UCTT) and Onto Innovation Inc. (ONTO). 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.
| UCTT | ONTO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.61 | ||
| Sortino ratioReturn per unit of downside risk | +0.28 | ||
| Omega ratioGain probability vs. loss probability | 1.40 | 1.35 | +0.05 |
| Calmar ratioReturn relative to maximum drawdown | 5.31 | 4.11 | +1.20 |
| Martin ratioReturn relative to average drawdown | 19.41 | 16.72 | +2.69 |
Loading charts...
Drawdowns
UCTT vs. ONTO - Drawdown Comparison
The maximum UCTT drawdown since its inception was -95.20%, roughly equal to the maximum ONTO drawdown of -98.56%. Use the drawdown chart below to compare losses from any high point for UCTT and ONTO.
Loading charts...
Drawdown Indicators
| UCTT | ONTO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -95.20% | -98.56% | +3.36% |
Max Drawdown (1Y)Largest decline over 1 year | -51.21% | -42.31% | -8.90% |
Max Drawdown (3Y)Largest decline over 3 years | -68.24% | -62.82% | -5.42% |
Max Drawdown (5Y)Largest decline over 5 years | -70.43% | -62.82% | -7.61% |
Max Drawdown (10Y)Largest decline over 10 years | -79.34% | -62.82% | -16.52% |
Current DrawdownCurrent decline from peak | -41.57% | -31.67% | -9.90% |
Average DrawdownAverage peak-to-trough decline | -46.18% | -54.55% | +8.37% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 13.98% | 10.38% | +3.60% |
Volatility
UCTT vs. ONTO - Volatility Comparison
Ultra Clean Holdings, Inc. (UCTT) has a higher volatility of 42.56% compared to Onto Innovation Inc. (ONTO) at 30.94%. This indicates that UCTT's price experiences larger fluctuations and is considered to be riskier than ONTO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| UCTT | ONTO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 42.56% | 30.94% | +11.62% |
Volatility (6M)Calculated over the trailing 6-month period | 73.11% | 55.48% | +17.63% |
Volatility (1Y)Calculated over the trailing 1-year period | 84.82% | 67.42% | +17.40% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 62.59% | 57.93% | +4.66% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 61.07% | 52.49% | +8.58% |
Dividends
UCTT vs. ONTO - Dividend Comparison
Neither UCTT nor ONTO has paid dividends to shareholders.
Financials
UCTT vs. ONTO - Financials Comparison
This section allows you to compare key financial metrics between Ultra Clean Holdings, Inc. and Onto Innovation 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
UCTT vs. ONTO - Profitability Comparison
UCTT - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, Ultra Clean Holdings, Inc. reported a gross profit of 84.40M and revenue of 533.70M. Therefore, the gross margin over that period was 15.8%.
ONTO - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, Onto Innovation Inc. reported a gross profit of 146.39M and revenue of 291.95M. Therefore, the gross margin over that period was 50.1%.
UCTT - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, Ultra Clean Holdings, Inc. reported an operating income of 11.40M and revenue of 533.70M, resulting in an operating margin of 2.1%.
ONTO - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, Onto Innovation Inc. reported an operating income of 33.51M and revenue of 291.95M, resulting in an operating margin of 11.5%.
UCTT - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, Ultra Clean Holdings, Inc. reported a net income of -17.90M and revenue of 533.70M, resulting in a net margin of -3.4%.
ONTO - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, Onto Innovation Inc. reported a net income of 33.75M and revenue of 291.95M, resulting in a net margin of 11.6%.
Frequently Asked Questions
UCTT and ONTO have a correlation of 0.76, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
UCTT has higher volatility (42.56%) compared to ONTO (30.94%). In terms of maximum drawdown, UCTT dropped -95.20% vs ONTO's -98.56%.
UCTT currently has the higher Sharpe Ratio (3.21 vs 2.60), 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 UCTT and ONTO
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