T vs. RIO

Last updated Jun 9, 2026

T (AT&T Inc.) and RIO (Rio Tinto Group) are both stocks. T operates in Telecom Services (Communication Services), while RIO operates in Other Industrial Metals & Mining (Basic Materials). Over the past 10 years, T returned 2.86%/yr vs 21.75%/yr for RIO. At a 0.21 correlation, their price movements are largely independent.

Performance

T vs. RIO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AT&T Inc. (T) and Rio Tinto Group (RIO). 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 RIO's 29.64% return. Over the past 10 years, T has underperformed RIO with an annualized return of 2.86%, while RIO has yielded a comparatively higher 21.75% 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%

RIO

• 1D: 0.24%
• 1M: -4.22%
• YTD: 29.64%
• 6M: 42.09%
• 1Y: 80.02%
• 3Y*: 23.43%
• 5Y*: 10.94%
• 10Y*: 21.75%

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

T vs. RIO - 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%
RIO Rio Tinto Group	29.64%	44.47%	-15.36%	11.06%	18.48%	-3.67%	36.22%	33.18%	-2.93%	44.87%

Correlation

The correlation between T and RIO is -0.07, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.07
Correlation (3Y) Calculated over the trailing 3-year period	0.06
Correlation (5Y) Calculated over the trailing 5-year period	0.16
Correlation (10Y) Calculated over the trailing 10-year period	0.21
Correlation (All Time) Calculated using the full available price history since Jun 29, 1990	0.21

The correlation between T and RIO shifts across timeframes, from -0.07 (1 year) to 0.21 (all time), reflecting how their relationship changes across market environments.

Fundamentals

EPS T : $3.04 RIO : $13.11
PE Ratio T : 7.39 RIO : 7.70
PS Ratio T : 1.29 RIO : 1.48
Total Revenue (TTM) T : $125.65B RIO : $111.41B
Gross Profit (TTM) T : $105.41B RIO : $31.10B
EBITDA (TTM) T : $54.70B RIO : $40.42B

Return for Risk

T vs. RIO — 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

RIO

RIO Risk / Return Rank: 93
RIO Sharpe Ratio Rank: 94
RIO Sortino Ratio Rank: 92
RIO Omega Ratio Rank: 91
RIO Calmar Ratio Rank: 93
RIO Martin Ratio Rank: 96

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. RIO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AT&T Inc. (T) and Rio Tinto Group (RIO). 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	RIO	Difference
Sharpe ratio: Return per unit of total volatility	-0.75	2.79	-3.54
Sortino ratio: Return per unit of downside risk	-0.98	3.32	-4.30
Omega ratio: Gain probability vs. loss probability	0.89	1.43	-0.55
Calmar ratio: Return relative to maximum drawdown	-0.75	5.30	-6.05
Martin ratio: Return relative to average drawdown	-1.59	20.21	-21.80
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. RIO - Sharpe Ratio Comparison

The current T Sharpe Ratio is -0.75, which is lower than the RIO Sharpe Ratio of 2.79. The chart below compares the historical Sharpe Ratios of T and RIO, 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	RIO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.75	2.79	-3.54
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.28	0.38	-0.10
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.12	0.71	-0.59
Sharpe Ratio (All Time) Calculated using the full available price history	0.38	0.33	+0.05

Drawdowns

T vs. RIO - Drawdown Comparison

The maximum T drawdown since its inception was -64.15%, smaller than the maximum RIO drawdown of -88.97%. Use the drawdown chart below to compare losses from any high point for T and RIO.

Drawdown Indicators

	T	RIO	Difference
Max Drawdown Largest peak-to-trough decline	-64.15%	-88.97%	+24.82%
Max Drawdown (1Y) Largest decline over 1 year	-21.87%	-15.19%	-6.68%
Max Drawdown (3Y) Largest decline over 3 years	-21.87%	-24.19%	+2.32%
Max Drawdown (5Y) Largest decline over 5 years	-32.01%	-35.25%	+3.24%
Max Drawdown (10Y) Largest decline over 10 years	-42.35%	-37.47%	-4.88%
Current Drawdown Current decline from peak	-21.87%	-9.92%	-11.95%
Average Drawdown Average peak-to-trough decline	-15.72%	-23.77%	+8.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	10.34%	3.97%	+6.37%

Volatility

T vs. RIO - Volatility Comparison

The current volatility for AT&T Inc. (T) is 7.50%, while Rio Tinto Group (RIO) has a volatility of 11.37%. This indicates that T experiences smaller price fluctuations and is considered to be less risky than RIO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	T	RIO	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.50%	11.37%	-3.87%
Volatility (6M) Calculated over the trailing 6-month period	17.57%	23.90%	-6.33%
Volatility (1Y) Calculated over the trailing 1-year period	21.98%	28.93%	-6.95%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.97%	29.23%	-5.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.71%	30.63%	-6.92%

Dividends

T vs. RIO - Dividend Comparison

T's dividend yield for the trailing twelve months is around 4.93%, more than RIO's 3.98% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RIO Rio Tinto Group	3.98%	4.66%	7.40%	5.40%	10.48%	10.23%	5.13%	7.68%	6.32%	4.47%	3.93%	7.58%
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 RIO in my portfolio?

T and RIO have a correlation of -0.07, 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 RIO?

RIO has higher volatility (11.37%) compared to T (7.50%). In terms of maximum drawdown, T dropped -64.15% vs RIO's -88.97%.

Which has better risk-adjusted returns?

RIO currently has the higher Sharpe Ratio (2.79 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.