CPK vs. DUK
CPK (Chesapeake Utilities Corporation) and DUK (Duke Energy Corporation) are both stocks. Both are in the Utilities sector — CPK in Utilities - Regulated Gas, DUK in Utilities - Regulated Electric. Over the past 10 years, CPK returned 8.83%/yr vs 8.62%/yr for DUK. At a 0.25 correlation, their price movements are largely independent.
Performance
CPK vs. DUK - Performance Comparison
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Returns By Period
In the year-to-date period, CPK achieves a -1.48% return, which is significantly lower than DUK's 8.84% return. Both investments have delivered pretty close results over the past 10 years, with CPK having a 8.83% annualized return and DUK not far behind at 8.62%.
CPK
- 1D
- 2.16%
- 1M
- -3.36%
- YTD
- -1.48%
- 6M
- -1.81%
- 1Y
- -0.09%
- 3Y*
- 2.57%
- 5Y*
- 2.32%
- 10Y*
- 8.83%
DUK
- 1D
- 1.24%
- 1M
- -0.21%
- YTD
- 8.84%
- 6M
- 9.23%
- 1Y
- 10.96%
- 3Y*
- 16.19%
- 5Y*
- 8.96%
- 10Y*
- 8.62%
CPK vs. DUK - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
CPK Chesapeake Utilities Corporation | -1.48% | 5.07% | 17.44% | -8.83% | -17.61% | 36.78% | 15.15% | 19.88% | 5.37% | 19.34% |
DUK Duke Energy Corporation | 8.84% | 12.72% | 15.56% | -1.63% | 2.03% | 19.11% | 4.77% | 10.29% | 7.41% | 12.96% |
Correlation
The correlation between CPK and DUK is 0.53, 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 | 0.53 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.54 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.58 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.55 |
Correlation (All Time) Calculated using the full available price history since Mar 26, 1990 | 0.25 |
Over the past year, CPK and DUK have become more correlated (0.53) than their long-term average of 0.25, meaning their price movements have been converging.
Fundamentals
CPK:
$2.92B
DUK:
$97.41B
CPK:
$3.21
DUK:
$6.61
CPK:
37.88
DUK:
18.93
CPK:
6.01
DUK:
1.48
CPK:
4.85
DUK:
2.92
CPK:
1.77K
DUK:
1.82
CPK:
$586.05M
DUK:
$33.29B
CPK:
$313.50M
DUK:
$19.45B
CPK:
$224.92M
DUK:
$15.91B
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Return for Risk
CPK vs. DUK — Risk / Return Rank
CPK
DUK
CPK vs. DUK - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Chesapeake Utilities Corporation (CPK) and Duke Energy Corporation (DUK). 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.
| CPK | DUK | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.75 | ||
| Sortino ratioReturn per unit of downside risk | -1.00 | ||
| Omega ratioGain probability vs. loss probability | 1.01 | 1.13 | -0.11 |
| Calmar ratioReturn relative to maximum drawdown | -0.01 | 1.01 | -1.02 |
| Martin ratioReturn relative to average drawdown | -0.01 | 2.36 | -2.38 |
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Drawdowns
CPK vs. DUK - Drawdown Comparison
The maximum CPK drawdown since its inception was -44.54%, smaller than the maximum DUK drawdown of -71.92%. Use the drawdown chart below to compare losses from any high point for CPK and DUK.
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Drawdown Indicators
| CPK | DUK | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -44.54% | -71.92% | +27.38% |
Max Drawdown (1Y)Largest decline over 1 year | -13.01% | -10.88% | -2.13% |
Max Drawdown (3Y)Largest decline over 3 years | -29.13% | -11.59% | -17.54% |
Max Drawdown (5Y)Largest decline over 5 years | -38.67% | -24.16% | -14.51% |
Max Drawdown (10Y)Largest decline over 10 years | -38.67% | -37.37% | -1.30% |
Current DrawdownCurrent decline from peak | -11.13% | -5.22% | -5.91% |
Average DrawdownAverage peak-to-trough decline | -8.82% | -10.85% | +2.03% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 6.40% | 4.65% | +1.75% |
Volatility
CPK vs. DUK - Volatility Comparison
Chesapeake Utilities Corporation (CPK) has a higher volatility of 6.21% compared to Duke Energy Corporation (DUK) at 5.33%. This indicates that CPK's price experiences larger fluctuations and is considered to be riskier than DUK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| CPK | DUK | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.21% | 5.33% | +0.88% |
Volatility (6M)Calculated over the trailing 6-month period | 14.14% | 11.14% | +3.00% |
Volatility (1Y)Calculated over the trailing 1-year period | 18.95% | 14.81% | +4.14% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.78% | 17.79% | +4.99% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 26.53% | 20.41% | +6.12% |
Dividends
CPK vs. DUK - Dividend Comparison
CPK's dividend yield for the trailing twelve months is around 2.30%, less than DUK's 3.69% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CPK Chesapeake Utilities Corporation | 2.30% | 2.16% | 2.07% | 2.18% | 1.76% | 1.29% | 1.59% | 1.65% | 1.77% | 1.63% | 1.80% | 2.00% |
DUK Duke Energy Corporation | 3.69% | 3.60% | 3.84% | 4.18% | 3.86% | 3.72% | 4.17% | 4.11% | 4.21% | 4.15% | 4.33% | 4.54% |
Financials
CPK vs. DUK - Financials Comparison
This section allows you to compare key financial metrics between Chesapeake Utilities Corporation and Duke Energy Corporation. 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
CPK vs. DUK - Profitability Comparison
CPK - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Chesapeake Utilities Corporation reported a gross profit of 0.00 and revenue of 353.10K. Therefore, the gross margin over that period was 0.0%.
DUK - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Duke Energy Corporation reported a gross profit of 6.23B and revenue of 9.18B. Therefore, the gross margin over that period was 67.9%.
CPK - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Chesapeake Utilities Corporation reported an operating income of 99.40K and revenue of 353.10K, resulting in an operating margin of 28.2%.
DUK - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Duke Energy Corporation reported an operating income of 2.73B and revenue of 9.18B, resulting in an operating margin of 29.7%.
CPK - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Chesapeake Utilities Corporation reported a net income of 59.30K and revenue of 353.10K, resulting in a net margin of 16.8%.
DUK - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Duke Energy Corporation reported a net income of 1.55B and revenue of 9.18B, resulting in a net margin of 16.9%.
Frequently Asked Questions
CPK and DUK have a correlation of 0.53, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
CPK has higher volatility (6.21%) compared to DUK (5.33%). In terms of maximum drawdown, CPK dropped -44.54% vs DUK's -71.92%.
DUK currently has the higher Sharpe Ratio (0.75 vs -0.00), 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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