TMUS vs. T

Last updated Jun 23, 2026

TMUS (T-Mobile US, Inc.) and T (AT&T Inc.) are both stocks. Both operate in the Telecom Services industry within the Communication Services sector. Over the past 10 years, TMUS returned 16.44%/yr vs 2.37%/yr for T. At a 0.35 correlation, their price movements are largely independent.

Performance

TMUS vs. T - Performance Comparison

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

Returns By Period

In the year-to-date period, TMUS achieves a -10.41% return, which is significantly lower than T's -9.05% return. Over the past 10 years, TMUS has outperformed T with an annualized return of 16.44%, while T has yielded a comparatively lower 2.37% annualized return.

TMUS

• 1D: -0.89%
• 1M: -5.45%
• YTD: -10.41%
• 6M: -7.08%
• 1Y: -17.18%
• 3Y*: 12.34%
• 5Y*: 5.36%
• 10Y*: 16.44%

T

• 1D: 0.41%
• 1M: -12.51%
• YTD: -9.05%
• 6M: -7.03%
• 1Y: -16.95%
• 3Y*: 18.94%
• 5Y*: 6.49%
• 10Y*: 2.37%

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

TMUS vs. T - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
TMUS T-Mobile US, Inc.	-10.41%	-6.58%	39.70%	15.02%	20.71%	-13.99%	71.96%	23.28%	0.16%	10.43%
T AT&T Inc.	-9.05%	13.97%	44.08%	-2.74%	5.76%	-8.09%	-21.37%	45.55%	-22.25%	-4.01%

Correlation

The correlation between TMUS and T is 0.57, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.57
Correlation (3Y) Calculated over the trailing 3-year period	0.46
Correlation (5Y) Calculated over the trailing 5-year period	0.43
Correlation (10Y) Calculated over the trailing 10-year period	0.38
Correlation (All Time) Calculated using the full available price history since Apr 19, 2007	0.35

Over the past year, TMUS and T have become more correlated (0.57) than their long-term average of 0.35, meaning their price movements have been converging.

Fundamentals

EPS TMUS : $9.41 T : $3.04
PE Ratio TMUS : 19.13 T : 7.26
PEG Ratio TMUS : 0.29 T : 0.30
PS Ratio TMUS : 2.23 T : 1.26
Total Revenue (TTM) TMUS : $90.53B T : $125.65B
Gross Profit (TTM) TMUS : $34.92B T : $105.41B
EBITDA (TTM) TMUS : $28.22B T : $54.70B

Return for Risk

TMUS vs. T — Risk / Return Rank

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

TMUS

TMUS Risk / Return Rank: 17
TMUS Sharpe Ratio Rank: 12
TMUS Sortino Ratio Rank: 13
TMUS Omega Ratio Rank: 15
TMUS Calmar Ratio Rank: 21
TMUS Martin Ratio Rank: 23

T

T Risk / Return Rank: 11
T Sharpe Ratio Rank: 10
T Sortino Ratio Rank: 12
T Omega Ratio Rank: 13
T Calmar Ratio Rank: 15
T Martin Ratio Rank: 5

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.

TMUS vs. T - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for T-Mobile US, Inc. (TMUS) and AT&T Inc. (T). 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.

	TMUS	T	Difference
Sharpe ratio: Return per unit of total volatility	-0.70	-0.76	+0.06
Sortino ratio: Return per unit of downside risk	-0.90	-0.99	+0.09
Omega ratio: Gain probability vs. loss probability	0.90	0.89	+0.01
Calmar ratio: Return relative to maximum drawdown	-0.57	-0.72	+0.15
Martin ratio: Return relative to average drawdown	-0.94	-1.54	+0.59

TMUS vs. T - Sharpe Ratio Comparison

The current TMUS Sharpe Ratio is -0.70, which is comparable to the T Sharpe Ratio of -0.76. The chart below compares the historical Sharpe Ratios of TMUS and T, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

TMUS vs. T - Drawdown Comparison

The maximum TMUS drawdown since its inception was -86.29%, which is greater than T's maximum drawdown of -64.15%. Use the drawdown chart below to compare losses from any high point for TMUS and T.

Drawdown Indicators

	TMUS	T	Difference
Max Drawdown Largest peak-to-trough decline	-86.29%	-64.15%	-22.14%
Max Drawdown (1Y) Largest decline over 1 year	-30.37%	-23.57%	-6.80%
Max Drawdown (3Y) Largest decline over 3 years	-33.65%	-23.57%	-10.08%
Max Drawdown (5Y) Largest decline over 5 years	-33.65%	-32.01%	-1.64%
Max Drawdown (10Y) Largest decline over 10 years	-33.65%	-42.35%	+8.70%
Current Drawdown Current decline from peak	-32.51%	-23.26%	-9.25%
Average Drawdown Average peak-to-trough decline	-25.96%	-15.72%	-10.24%
Ulcer Index Depth and duration of drawdowns from previous peaks	18.29%	11.06%	+7.23%

Volatility

TMUS vs. T - Volatility Comparison

The current volatility for T-Mobile US, Inc. (TMUS) is 7.09%, while AT&T Inc. (T) has a volatility of 7.92%. This indicates that TMUS experiences smaller price fluctuations and is considered to be less risky than T based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TMUS	T	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.09%	7.92%	-0.83%
Volatility (6M) Calculated over the trailing 6-month period	19.27%	18.08%	+1.19%
Volatility (1Y) Calculated over the trailing 1-year period	24.82%	22.46%	+2.36%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.94%	24.08%	-0.14%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	26.09%	23.77%	+2.32%

Dividends

TMUS vs. T - Dividend Comparison

TMUS's dividend yield for the trailing twelve months is around 2.19%, less than T's 5.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
T AT&T Inc.	5.02%	4.47%	4.87%	6.62%	6.66%	8.46%	7.23%	5.22%	7.01%	5.04%	4.51%	5.46%
TMUS T-Mobile US, Inc.	2.19%	1.80%	1.28%	0.41%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

Frequently Asked Questions

Can I hold both TMUS and T in my portfolio?

TMUS and T have a correlation of 0.57, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TMUS or T?

T has higher volatility (7.92%) compared to TMUS (7.09%). In terms of maximum drawdown, TMUS dropped -86.29% vs T's -64.15%.

Which has better risk-adjusted returns?

TMUS currently has the higher Sharpe Ratio (-0.70 vs -0.76), 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.