SKM vs. T
SKM (SK Telecom Co.,Ltd) 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, SKM returned 7.05%/yr vs 2.52%/yr for T. Their 0.21 correlation means their historical movements had little consistent relationship.
Performance
SKM vs. T - Performance Comparison
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Returns By Period
In the year-to-date period, SKM achieves a 54.07% return, which is significantly higher than T's -3.04% return. Over the past 10 years, SKM has outperformed T with an annualized return of 7.05%, while T has yielded a comparatively lower 2.52% annualized return.
SKM
- 1D
- -0.50%
- 1M
- -0.53%
- 6M
- 12.20%
- YTD
- 54.07%
- 1Y
- 45.38%
- 3Y*
- 21.52%
- 5Y*
- 7.38%
- 10Y*
- 7.05%
- ALL TIME*
- 5.54%
T
- 1D
- 0.17%
- 1M
- 14.48%
- 6M
- -9.17%
- YTD
- -3.04%
- 1Y
- -12.27%
- 3Y*
- 23.94%
- 5Y*
- 7.92%
- 10Y*
- 2.52%
- ALL TIME*
- 9.45%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $101.53M | $89.14M | $101.58M | |
| $2.13B | $1.85B | $1.42B |
SKM vs. T - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SKM SK Telecom Co.,Ltd | 54.07% | 2.55% | 2.85% | 11.56% | -17.77% | 14.59% | 6.47% | -13.77% | -3.98% | 34.06% |
T AT&T Inc. | -3.04% | 13.97% | 44.08% | -2.74% | 5.76% | -8.09% | -21.37% | 45.55% | -22.25% | -4.01% |
Correlation
The correlation between SKM and T is 0.09, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.09 |
Correlation (3Y) Balances recent behavior with more history. | 0.11 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.19 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.21 |
Correlation (All Time) Calculated using the full available price history since Jun 27, 1996 | 0.21 |
The correlation between SKM and T shifts across timeframes, from 0.09 (1 year) to 0.21 (10 years), reflecting how their relationship changes across market environments.
Fundamentals
SKM:
$12.14B
T:
$159.44B
SKM:
₩116.04
T:
$3.03
SKM:
390.29
T:
7.67
SKM:
1.36
T:
1.29
SKM:
1.34
T:
1.28
SKM:
₩12.65T
T:
$127.24B
SKM:
₩11.53T
T:
$112.60B
SKM:
₩3.16T
T:
$49.53B
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Return for Risk
SKM vs. T — Risk / Return Rank
SKM
T
SKM vs. T - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for SK Telecom Co.,Ltd (SKM) 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.
| SKM | T | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.42 | ||
| Sortino ratioReturn per unit of downside risk | +2.12 | ||
| Omega ratioGain probability vs. loss probability | 1.23 | 0.94 | +0.29 |
| Calmar ratioReturn relative to maximum drawdown | 1.26 | -0.39 | +1.65 |
| Martin ratioReturn relative to average drawdown | 3.61 | -0.84 | +4.45 |
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Drawdowns
SKM vs. T - Drawdown Comparison
The maximum SKM drawdown since its inception was -74.42%, which is greater than T's maximum drawdown of -64.15%. Use the drawdown chart below to compare losses from any high point for SKM and T.
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Drawdown Indicators
| SKM | T | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -74.42% | -64.15% | -10.27% |
Max Drawdown (1Y)Largest decline over 1 year | -35.57% | -28.89% | -6.68% |
Max Drawdown (3Y)Largest decline over 3 years | -35.57% | -28.89% | -6.68% |
Max Drawdown (5Y)Largest decline over 5 years | -35.57% | -32.01% | -3.56% |
Max Drawdown (10Y)Largest decline over 10 years | -49.83% | -42.35% | -7.48% |
Current DrawdownCurrent decline from peak | -31.24% | -18.19% | -13.05% |
Average DrawdownAverage peak-to-trough decline | -36.13% | -15.74% | -20.39% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 12.42% | 13.37% | -0.95% |
Volatility
SKM vs. T - Volatility Comparison
SK Telecom Co.,Ltd (SKM) has a higher volatility of 20.18% compared to AT&T Inc. (T) at 8.75%. This indicates that SKM'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.
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Volatility by Period
| SKM | T | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 20.18% | 8.75% | +11.43% |
Volatility (6M)Calculated over the trailing 6-month period | 42.54% | 20.28% | +22.26% |
Volatility (1Y)Calculated over the trailing 1-year period | 46.50% | 24.78% | +21.72% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 29.30% | 24.61% | +4.69% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 27.11% | 24.02% | +3.09% |
Dividends
SKM vs. T - Dividend Comparison
SKM's dividend yield for the trailing twelve months is around 1.05%, less than T's 4.77% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SKM SK Telecom Co.,Ltd | 1.05% | 5.22% | 4.76% | 6.86% | 6.81% | 77.93% | 0.38% | 0.00% | 0.00% | 0.35% | 4.68% | 4.78% |
T AT&T Inc. | 4.77% | 4.47% | 4.87% | 6.62% | 6.66% | 8.46% | 7.23% | 5.22% | 7.01% | 5.04% | 4.51% | 5.46% |
Financials
SKM vs. T - Financials Comparison
This section allows you to compare key financial metrics between SK Telecom Co.,Ltd and AT&T Inc.. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
SKM vs. T - Profitability Comparison
SKM - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, SK Telecom Co.,Ltd reported a gross profit of 684.91M and revenue of 3.00B. Therefore, the gross margin over that period was 22.9%.
T - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Aug 2026, AT&T Inc. reported a gross profit of 25.25B and revenue of 31.56B. Therefore, the gross margin over that period was 80.0%.
SKM - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, SK Telecom Co.,Ltd reported an operating income of 366.03M and revenue of 3.00B, resulting in an operating margin of 12.2%.
T - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Aug 2026, AT&T Inc. reported an operating income of 7.04B and revenue of 31.56B, resulting in an operating margin of 22.3%.
SKM - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, SK Telecom Co.,Ltd reported a net income of 220.00M and revenue of 3.00B, resulting in a net margin of 7.3%.
T - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Aug 2026, AT&T Inc. reported a net income of 4.59B and revenue of 31.56B, resulting in a net margin of 14.6%.
Frequently Asked Questions
SKM and T have a correlation of 0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
SKM has higher volatility (20.18%) compared to T (8.75%). In terms of maximum drawdown, SKM dropped -74.42% vs T's -64.15%.
SKM currently has the higher Sharpe Ratio (0.97 vs -0.45), 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.
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