CSCO vs. T

Last updated Apr 1, 2026

Compare and contrast key facts about Cisco Systems, Inc. (CSCO) and AT&T Inc. (T).

Performance

CSCO vs. T - Performance Comparison

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

CSCO vs. T - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CSCO Cisco Systems, Inc.	1.27%	33.47%	21.00%	9.30%	-22.46%	45.76%	-3.49%	13.81%	16.57%	31.27%
T AT&T Inc.	18.07%	13.97%	44.08%	-2.74%	5.76%	-8.09%	-21.37%	45.55%	-22.25%	-4.01%

Fundamentals

Market Cap CSCO : $309.35B T : $208.12B
EPS CSCO : $2.77 T : $3.04
PE Ratio CSCO : 27.98 T : 9.52
PEG Ratio CSCO : 23.48 T : 0.39
PS Ratio CSCO : 5.25 T : 1.66
PB Ratio CSCO : 6.48 T : 1.67
Total Revenue (TTM) CSCO : $59.05B T : $125.65B
Gross Profit (TTM) CSCO : $38.28B T : $100.22B
EBITDA (TTM) CSCO : $14.30B T : $53.20B

Returns By Period

In the year-to-date period, CSCO achieves a 1.27% return, which is significantly lower than T's 18.07% return. Over the past 10 years, CSCO has outperformed T with an annualized return of 13.89%, while T has yielded a comparatively lower 5.86% annualized return.

CSCO

• 1D: 0.71%
• 1M: -2.35%
• YTD: 1.27%
• 6M: 14.70%
• 1Y: 28.79%
• 3Y*: 17.35%
• 5Y*: 11.52%
• 10Y*: 13.89%

T

• 1D: 0.73%
• 1M: 3.50%
• YTD: 18.07%
• 6M: 4.97%
• 1Y: 6.99%
• 3Y*: 21.14%
• 5Y*: 11.20%
• 10Y*: 5.86%

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

Return for Risk

CSCO vs. T — Risk / Return Rank

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

CSCO

CSCO Risk / Return Rank: 75
CSCO Sharpe Ratio Rank: 77
CSCO Sortino Ratio Rank: 67
CSCO Omega Ratio Rank: 72
CSCO Calmar Ratio Rank: 81
CSCO Martin Ratio Rank: 80

T

T Risk / Return Rank: 49
T Sharpe Ratio Rank: 54
T Sortino Ratio Rank: 45
T Omega Ratio Rank: 44
T Calmar Ratio Rank: 51
T Martin Ratio Rank: 52

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.

CSCO vs. T - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Cisco Systems, Inc. (CSCO) 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.

	CSCO	T	Difference
Sharpe ratio Return per unit of total volatility	1.03	0.31	+0.72
Sortino ratio Return per unit of downside risk	1.44	0.58	+0.86
Omega ratio Gain probability vs. loss probability	1.22	1.07	+0.15
Calmar ratio Return relative to maximum drawdown	2.25	0.36	+1.90
Martin ratio Return relative to average drawdown	5.80	0.81	+4.98
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CSCO vs. T - Sharpe Ratio Comparison

The current CSCO Sharpe Ratio is 1.03, which is higher than the T Sharpe Ratio of 0.31. The chart below compares the historical Sharpe Ratios of CSCO and T, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	CSCO	T	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.03	0.31	+0.72
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.50	0.47	+0.02
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.55	0.25	+0.30
Sharpe Ratio (All Time) Calculated using the full available price history	0.57	0.40	+0.17

Correlation

The correlation between CSCO and T is 0.28, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

CSCO vs. T - Dividend Comparison

CSCO's dividend yield for the trailing twelve months is around 2.11%, less than T's 3.83% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CSCO Cisco Systems, Inc.	2.11%	2.12%	2.69%	3.07%	3.17%	2.32%	3.20%	2.88%	2.95%	2.95%	3.28%	3.02%
T AT&T Inc.	3.83%	4.47%	4.87%	6.62%	6.66%	8.46%	7.23%	5.22%	7.01%	5.04%	4.51%	5.46%

Drawdowns

CSCO vs. T - Drawdown Comparison

The maximum CSCO drawdown since its inception was -89.26%, which is greater than T's maximum drawdown of -64.15%. Use the drawdown chart below to compare losses from any high point for CSCO and T.

Drawdown Indicators

	CSCO	T	Difference
Max Drawdown Largest peak-to-trough decline	-89.26%	-64.15%	-25.11%
Max Drawdown (1Y) Largest decline over 1 year	-13.57%	-20.60%	+7.03%
Max Drawdown (5Y) Largest decline over 5 years	-36.68%	-36.68%	0.00%
Max Drawdown (10Y) Largest decline over 10 years	-41.95%	-42.35%	+0.40%
Current Drawdown Current decline from peak	-10.59%	-0.38%	-10.21%
Average Drawdown Average peak-to-trough decline	-40.33%	-15.74%	-24.59%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.28%	9.06%	-3.78%

Volatility

CSCO vs. T - Volatility Comparison

Cisco Systems, Inc. (CSCO) has a higher volatility of 8.22% compared to AT&T Inc. (T) at 6.70%. This indicates that CSCO'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

	CSCO	T	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.22%	6.70%	+1.52%
Volatility (6M) Calculated over the trailing 6-month period	21.41%	16.42%	+4.99%
Volatility (1Y) Calculated over the trailing 1-year period	28.03%	22.39%	+5.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.34%	23.82%	-0.48%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	25.19%	23.49%	+1.70%

Financials