STX vs. T

Last updated Jun 13, 2026

STX (Seagate Technology plc) and T (AT&T Inc.) are both stocks. STX operates in Computer Hardware (Technology), while T operates in Telecom Services (Communication Services). Over the past 10 years, STX returned 51.08%/yr vs 3.33%/yr for T. At a 0.22 correlation, their price movements are largely independent.

Performance

STX vs. T - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Seagate Technology plc (STX) 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, STX achieves a 238.67% return, which is significantly higher than T's -2.96% return. Over the past 10 years, STX has outperformed T with an annualized return of 51.08%, while T has yielded a comparatively lower 3.33% annualized return.

STX

• 1D: 7.25%
• 1M: 17.04%
• YTD: 238.67%
• 6M: 225.10%
• 1Y: 640.98%
• 3Y*: 149.80%
• 5Y*: 62.01%
• 10Y*: 51.08%

T

• 1D: 2.52%
• 1M: -1.87%
• YTD: -2.96%
• 6M: -1.93%
• 1Y: -12.71%
• 3Y*: 20.58%
• 5Y*: 7.38%
• 10Y*: 3.33%

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

STX vs. T - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
STX Seagate Technology plc	238.67%	225.26%	4.06%	69.12%	-51.42%	87.50%	10.14%	62.14%	-2.90%	16.67%
T AT&T Inc.	-2.96%	13.97%	44.08%	-2.74%	5.76%	-8.09%	-21.37%	45.55%	-22.25%	-4.01%

Correlation

The correlation between STX and T is -0.18, 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	-0.18
Correlation (3Y) Calculated over the trailing 3-year period	-0.05
Correlation (5Y) Calculated over the trailing 5-year period	0.11
Correlation (10Y) Calculated over the trailing 10-year period	0.18
Correlation (All Time) Calculated using the full available price history since Dec 11, 2002	0.22

The correlation between STX and T shifts across timeframes, from -0.18 (1 year) to 0.22 (all time), reflecting how their relationship changes across market environments.

Fundamentals

EPS STX : $10.58 T : $3.04
PE Ratio STX : 87.99 T : 7.74
PEG Ratio STX : 1.05 T : 0.32
PS Ratio STX : 19.01 T : 1.35
Total Revenue (TTM) STX : $11.01B T : $125.65B
Gross Profit (TTM) STX : $4.57B T : $105.41B
EBITDA (TTM) STX : $2.59B T : $54.70B

Return for Risk

STX vs. T — Risk / Return Rank

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

STX

STX Risk / Return Rank: 99
STX Sharpe Ratio Rank: 100
STX Sortino Ratio Rank: 99
STX Omega Ratio Rank: 98
STX Calmar Ratio Rank: 100
STX Martin Ratio Rank: 100

T

T Risk / Return Rank: 18
T Sharpe Ratio Rank: 17
T Sortino Ratio Rank: 17
T Omega Ratio Rank: 18
T Calmar Ratio Rank: 21
T Martin Ratio Rank: 15

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.

STX vs. T - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Seagate Technology plc (STX) 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.

	STX	T	Difference
Sharpe ratio: Return per unit of total volatility	10.19	-0.59	+10.78
Sortino ratio: Return per unit of downside risk	6.34	-0.72	+7.06
Omega ratio: Gain probability vs. loss probability	1.81	0.92	+0.90
Calmar ratio: Return relative to maximum drawdown	31.15	-0.59	+31.74
Martin ratio: Return relative to average drawdown	90.13	-1.22	+91.35

STX vs. T - Sharpe Ratio Comparison

The current STX Sharpe Ratio is 10.19, which is higher than the T Sharpe Ratio of -0.59. The chart below compares the historical Sharpe Ratios of STX 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

STX vs. T - Drawdown Comparison

The maximum STX drawdown since its inception was -88.74%, which is greater than T's maximum drawdown of -64.15%. Use the drawdown chart below to compare losses from any high point for STX and T.

Drawdown Indicators

	STX	T	Difference
Max Drawdown Largest peak-to-trough decline	-88.74%	-64.15%	-24.59%
Max Drawdown (1Y) Largest decline over 1 year	-21.00%	-21.87%	+0.87%
Max Drawdown (3Y) Largest decline over 3 years	-40.00%	-21.87%	-18.13%
Max Drawdown (5Y) Largest decline over 5 years	-56.99%	-32.01%	-24.98%
Max Drawdown (10Y) Largest decline over 10 years	-56.99%	-42.35%	-14.64%
Current Drawdown Current decline from peak	-1.03%	-18.12%	+17.09%
Average Drawdown Average peak-to-trough decline	-26.44%	-15.72%	-10.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.24%	10.64%	-3.40%

Volatility

STX vs. T - Volatility Comparison

Seagate Technology plc (STX) has a higher volatility of 19.61% compared to AT&T Inc. (T) at 8.21%. This indicates that STX's price experiences larger fluctuations and is considered to be riskier than T based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	STX	T	Difference
Volatility (1M) Calculated over the trailing 1-month period	19.61%	8.21%	+11.40%
Volatility (6M) Calculated over the trailing 6-month period	50.59%	17.80%	+32.79%
Volatility (1Y) Calculated over the trailing 1-year period	64.18%	22.13%	+42.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	44.86%	24.01%	+20.85%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	42.27%	23.73%	+18.54%

Dividends

STX vs. T - Dividend Comparison

STX's dividend yield for the trailing twelve months is around 0.31%, less than T's 4.71% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
STX Seagate Technology plc	0.31%	1.05%	3.27%	3.28%	5.32%	2.40%	4.21%	4.27%	6.53%	6.02%	6.60%	6.14%
T AT&T Inc.	4.71%	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 STX and T in my portfolio?

STX and T have a correlation of -0.18, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, STX or T?

STX has higher volatility (19.61%) compared to T (8.21%). In terms of maximum drawdown, STX dropped -88.74% vs T's -64.15%.

Which has better risk-adjusted returns?

STX currently has the higher Sharpe Ratio (10.19 vs -0.59), 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.