T vs. APH

Last updated Jun 9, 2026

T (AT&T Inc.) and APH (Amphenol Corporation) are both stocks. T operates in Telecom Services (Communication Services), while APH operates in Electronic Components (Technology). Over the past 10 years, T returned 2.86%/yr vs 26.67%/yr for APH. At a 0.23 correlation, their price movements are largely independent.

Performance

T vs. APH - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AT&T Inc. (T) and Amphenol Corporation (APH). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, T achieves a -7.40% return, which is significantly lower than APH's 6.47% return. Over the past 10 years, T has underperformed APH with an annualized return of 2.86%, while APH has yielded a comparatively higher 26.67% annualized return.

T

• 1D: -1.10%
• 1M: -10.57%
• YTD: -7.40%
• 6M: -7.40%
• 1Y: -16.38%
• 3Y*: 18.39%
• 5Y*: 6.60%
• 10Y*: 2.86%

APH

• 1D: 3.45%
• 1M: 12.16%
• YTD: 6.47%
• 6M: 2.93%
• 1Y: 54.90%
• 3Y*: 55.57%
• 5Y*: 34.64%
• 10Y*: 26.67%

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

T vs. APH - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
T AT&T Inc.	-7.40%	13.97%	44.08%	-2.74%	5.76%	-8.09%	-21.37%	45.55%	-22.25%	-4.01%
APH Amphenol Corporation	6.47%	96.08%	41.30%	31.85%	-11.96%	35.25%	22.09%	34.91%	-6.82%	31.81%

Correlation

The correlation between T and APH is -0.14, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.14
Correlation (3Y) Calculated over the trailing 3-year period	-0.06
Correlation (5Y) Calculated over the trailing 5-year period	0.12
Correlation (10Y) Calculated over the trailing 10-year period	0.21
Correlation (All Time) Calculated using the full available price history since Nov 8, 1991	0.23

The correlation between T and APH shifts across timeframes, from -0.14 (1 year) to 0.23 (all time), reflecting how their relationship changes across market environments.

Fundamentals

EPS T : $3.04 APH : $4.58
PE Ratio T : 7.39 APH : 31.32
PEG Ratio T : 0.31 APH : 1.04
PS Ratio T : 1.29 APH : 7.11
Total Revenue (TTM) T : $125.65B APH : $25.90B
Gross Profit (TTM) T : $105.41B APH : $9.67B
EBITDA (TTM) T : $54.70B APH : $7.45B

Return for Risk

T vs. APH — Risk / Return Rank

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

T

T Risk / Return Rank: 11
T Sharpe Ratio Rank: 11
T Sortino Ratio Rank: 12
T Omega Ratio Rank: 13
T Calmar Ratio Rank: 14
T Martin Ratio Rank: 4

APH

APH Risk / Return Rank: 76
APH Sharpe Ratio Rank: 80
APH Sortino Ratio Rank: 72
APH Omega Ratio Rank: 75
APH Calmar Ratio Rank: 75
APH Martin Ratio Rank: 76

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.

T vs. APH - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AT&T Inc. (T) 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.

	T	APH	Difference
Sharpe ratio: Return per unit of total volatility	-0.75	1.35	-2.10
Sortino ratio: Return per unit of downside risk	-0.98	1.79	-2.77
Omega ratio: Gain probability vs. loss probability	0.89	1.25	-0.36
Calmar ratio: Return relative to maximum drawdown	-0.75	1.96	-2.71
Martin ratio: Return relative to average drawdown	-1.59	5.07	-6.65
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

T vs. APH - Sharpe Ratio Comparison

The current T Sharpe Ratio is -0.75, which is lower than the APH Sharpe Ratio of 1.35. The chart below compares the historical Sharpe Ratios of T 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

	T	APH	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.75	1.35	-2.10
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.28	1.14	-0.86
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.12	0.96	-0.84
Sharpe Ratio (All Time) Calculated using the full available price history	0.38	0.63	-0.25

Drawdowns

T vs. APH - Drawdown Comparison

The maximum T drawdown since its inception was -64.15%, roughly equal to the maximum APH drawdown of -63.41%. Use the drawdown chart below to compare losses from any high point for T and APH.

Drawdown Indicators

	T	APH	Difference
Max Drawdown Largest peak-to-trough decline	-64.15%	-63.41%	-0.74%
Max Drawdown (1Y) Largest decline over 1 year	-21.87%	-28.19%	+6.32%
Max Drawdown (3Y) Largest decline over 3 years	-21.87%	-28.19%	+6.32%
Max Drawdown (5Y) Largest decline over 5 years	-32.01%	-28.73%	-3.28%
Max Drawdown (10Y) Largest decline over 10 years	-42.35%	-37.56%	-4.79%
Current Drawdown Current decline from peak	-21.87%	-13.45%	-8.42%
Average Drawdown Average peak-to-trough decline	-15.72%	-13.56%	-2.16%
Ulcer Index Depth and duration of drawdowns from previous peaks	10.34%	10.87%	-0.53%

Volatility

T vs. APH - Volatility Comparison

The current volatility for AT&T Inc. (T) is 7.50%, while Amphenol Corporation (APH) has a volatility of 16.86%. This indicates that T 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

	T	APH	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.50%	16.86%	-9.36%
Volatility (6M) Calculated over the trailing 6-month period	17.57%	36.53%	-18.96%
Volatility (1Y) Calculated over the trailing 1-year period	21.98%	40.97%	-18.99%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.97%	30.54%	-6.57%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.71%	27.83%	-4.12%

Dividends

T vs. APH - Dividend Comparison

T's dividend yield for the trailing twelve months is around 4.93%, more than APH's 0.58% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
APH Amphenol Corporation	0.58%	0.55%	0.79%	1.07%	1.06%	0.89%	0.80%	0.89%	1.09%	0.80%	0.86%	1.01%
T AT&T Inc.	4.93%	4.47%	4.87%	6.62%	6.66%	8.46%	7.23%	5.22%	7.01%	5.04%	4.51%	5.46%

Financials

Frequently Asked Questions

Can I hold both T and APH in my portfolio?

T and APH have a correlation of -0.14, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, T or APH?

APH has higher volatility (16.86%) compared to T (7.50%). In terms of maximum drawdown, T dropped -64.15% vs APH's -63.41%.

Which has better risk-adjusted returns?

APH currently has the higher Sharpe Ratio (1.35 vs -0.75), 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.