ST vs. APH

Last updated Jun 4, 2026

ST (Sensata Technologies Holding plc) and APH (Amphenol Corporation) are both stocks. Both are in the Technology sector — ST in Scientific & Technical Instruments, APH in Electronic Components. Over the past 10 years, ST returned 4.32%/yr vs 27.09%/yr for APH. A 0.57 correlation means they provide meaningful diversification when combined.

Performance

ST vs. APH - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Sensata Technologies Holding plc (ST) and Amphenol Corporation (APH). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ST achieves a 61.83% return, which is significantly higher than APH's 9.45% return. Over the past 10 years, ST has underperformed APH with an annualized return of 4.32%, while APH has yielded a comparatively higher 27.09% annualized return.

ST

• 1D: 0.79%
• 1M: 30.55%
• YTD: 61.83%
• 6M: 63.80%
• 1Y: 104.55%
• 3Y*: 9.18%
• 5Y*: -1.48%
• 10Y*: 4.32%

APH

• 1D: -0.53%
• 1M: 4.67%
• YTD: 9.45%
• 6M: 6.89%
• 1Y: 62.16%
• 3Y*: 57.45%
• 5Y*: 34.98%
• 10Y*: 27.09%

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

ST vs. APH - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ST Sensata Technologies Holding plc	61.83%	23.53%	-26.08%	-5.87%	-34.05%	16.97%	-2.10%	20.14%	-12.27%	31.22%
APH Amphenol Corporation	9.45%	96.08%	41.30%	31.85%	-11.96%	35.25%	22.09%	34.91%	-6.82%	31.81%

Correlation

The correlation between ST and APH is 0.31, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.31
Correlation (3Y) Calculated over the trailing 3-year period	0.42
Correlation (5Y) Calculated over the trailing 5-year period	0.55
Correlation (10Y) Calculated over the trailing 10-year period	0.58
Correlation (All Time) Calculated using the full available price history since Mar 12, 2010	0.57

Over the past year, the correlation between ST and APH has dropped to 0.31 - well below their long-term average of 0.57, suggesting their price drivers have been diverging.

Fundamentals

Market Cap ST : $7.85B APH : $190.39B
EPS ST : $0.33 APH : $4.58
PE Ratio ST : 162.08 APH : 32.20
PS Ratio ST : 2.11 APH : 7.31
PB Ratio ST : 2.75 APH : 13.62
Total Revenue (TTM) ST : $3.73B APH : $25.90B
Gross Profit (TTM) ST : $1.04B APH : $9.67B
EBITDA (TTM) ST : $711.50M APH : $7.45B

Return for Risk

ST vs. APH — Risk / Return Rank

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

ST

ST Risk / Return Rank: 93
ST Sharpe Ratio Rank: 93
ST Sortino Ratio Rank: 92
ST Omega Ratio Rank: 89
ST Calmar Ratio Rank: 95
ST Martin Ratio Rank: 94

APH

APH Risk / Return Rank: 77
APH Sharpe Ratio Rank: 82
APH Sortino Ratio Rank: 74
APH Omega Ratio Rank: 76
APH Calmar Ratio Rank: 76
APH Martin Ratio Rank: 77

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.

ST vs. APH - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Sensata Technologies Holding plc (ST) and Amphenol Corporation (APH). 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.

	ST	APH	Difference
Sharpe ratio Return per unit of total volatility	2.69	1.55	+1.14
Sortino ratio Return per unit of downside risk	3.52	1.98	+1.54
Omega ratio Gain probability vs. loss probability	1.41	1.28	+0.13
Calmar ratio Return relative to maximum drawdown	7.22	2.22	+5.00
Martin ratio Return relative to average drawdown	18.27	5.79	+12.48
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ST vs. APH - Sharpe Ratio Comparison

The current ST Sharpe Ratio is 2.69, which is higher than the APH Sharpe Ratio of 1.55. The chart below compares the historical Sharpe Ratios of ST and APH, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	ST	APH	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.69	1.55	+1.14
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.04	1.16	-1.20
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.12	0.98	-0.86
Sharpe Ratio (All Time) Calculated using the full available price history	0.22	0.63	-0.41

Drawdowns

ST vs. APH - Drawdown Comparison

The maximum ST drawdown since its inception was -71.75%, which is greater than APH's maximum drawdown of -63.41%. Use the drawdown chart below to compare losses from any high point for ST and APH.

Drawdown Indicators

	ST	APH	Difference
Max Drawdown Largest peak-to-trough decline	-71.75%	-63.41%	-8.34%
Max Drawdown (1Y) Largest decline over 1 year	-14.56%	-28.19%	+13.63%
Max Drawdown (3Y) Largest decline over 3 years	-61.56%	-28.19%	-33.37%
Max Drawdown (5Y) Largest decline over 5 years	-71.75%	-28.73%	-43.02%
Max Drawdown (10Y) Largest decline over 10 years	-71.75%	-37.56%	-34.19%
Current Drawdown Current decline from peak	-12.93%	-11.03%	-1.90%
Average Drawdown Average peak-to-trough decline	-22.79%	-13.56%	-9.23%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.74%	10.76%	-5.02%

Volatility

ST vs. APH - Volatility Comparison

The current volatility for Sensata Technologies Holding plc (ST) is 14.88%, while Amphenol Corporation (APH) has a volatility of 15.91%. This indicates that ST experiences smaller price fluctuations and is considered to be less risky than APH based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ST	APH	Difference
Volatility (1M) Calculated over the trailing 1-month period	14.88%	15.91%	-1.03%
Volatility (6M) Calculated over the trailing 6-month period	29.24%	36.03%	-6.79%
Volatility (1Y) Calculated over the trailing 1-year period	39.23%	40.39%	-1.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	36.54%	30.42%	+6.12%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	34.87%	27.75%	+7.12%

Dividends

ST vs. APH - Dividend Comparison

ST's dividend yield for the trailing twelve months is around 0.90%, more than APH's 0.56% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
APH Amphenol Corporation	0.56%	0.55%	0.79%	1.07%	1.06%	0.89%	0.80%	0.89%	1.09%	0.80%	0.86%	1.01%
ST Sensata Technologies Holding plc	0.90%	1.44%	1.75%	1.25%	0.82%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

ST vs. APH - Profitability Comparison

The chart below illustrates the profitability comparison between Sensata Technologies Holding plc and Amphenol Corporation over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

ST - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Sensata Technologies Holding plc reported a gross profit of 286.30M and revenue of 934.80M. Therefore, the gross margin over that period was 30.6%.

APH - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Amphenol Corporation reported a gross profit of 2.80B and revenue of 7.62B. Therefore, the gross margin over that period was 36.8%.

ST - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Sensata Technologies Holding plc reported an operating income of 141.60M and revenue of 934.80M, resulting in an operating margin of 15.2%.

APH - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Amphenol Corporation reported an operating income of 1.83B and revenue of 7.62B, resulting in an operating margin of 24.0%.

ST - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Sensata Technologies Holding plc reported a net income of 87.10M and revenue of 934.80M, resulting in a net margin of 9.3%.

APH - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Amphenol Corporation reported a net income of 2.35B and revenue of 7.62B, resulting in a net margin of 30.8%.

Frequently Asked Questions

Can I hold both ST and APH in my portfolio?

ST and APH have a correlation of 0.31, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ST or APH?

APH has higher volatility (15.91%) compared to ST (14.88%). In terms of maximum drawdown, ST dropped -71.75% vs APH's -63.41%.

Which has better risk-adjusted returns?

ST currently has the higher Sharpe Ratio (2.69 vs 1.55), 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.