FSK vs. ENFR

Last updated Jun 4, 2026

FSK (FS KKR Capital Corp.) is a stock, while ENFR (Alerian Energy Infrastructure ETF) is Energy Equities fund tracking the Alerian Midstream Energy Select Index. Over the past 10 years, FSK returned 2.45%/yr vs 11.96%/yr for ENFR. At a 0.40 correlation, their price movements are largely independent.

Performance

FSK vs. ENFR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in FS KKR Capital Corp. (FSK) and Alerian Energy Infrastructure ETF (ENFR). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FSK achieves a -23.50% return, which is significantly lower than ENFR's 24.60% return. Over the past 10 years, FSK has underperformed ENFR with an annualized return of 2.45%, while ENFR has yielded a comparatively higher 11.96% annualized return.

FSK

• 1D: -0.92%
• 1M: -7.06%
• YTD: -23.50%
• 6M: -26.57%
• 1Y: -39.65%
• 3Y*: -4.54%
• 5Y*: -0.87%
• 10Y*: 2.45%

ENFR

• 1D: 0.10%
• 1M: -1.01%
• YTD: 24.60%
• 6M: 24.41%
• 1Y: 25.40%
• 3Y*: 27.99%
• 5Y*: 19.91%
• 10Y*: 11.96%

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

FSK vs. ENFR - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FSK FS KKR Capital Corp.	-23.50%	-20.38%	25.71%	33.04%	-4.71%	41.59%	-10.27%	33.89%	-20.23%	-21.23%
ENFR Alerian Energy Infrastructure ETF	24.60%	5.88%	42.17%	15.63%	17.48%	39.97%	-24.14%	21.60%	-18.67%	-0.19%

Correlation

The correlation between FSK and ENFR is 0.01, 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	0.01
Correlation (3Y) Calculated over the trailing 3-year period	0.28
Correlation (5Y) Calculated over the trailing 5-year period	0.44
Correlation (10Y) Calculated over the trailing 10-year period	0.41
Correlation (All Time) Calculated using the full available price history since Apr 17, 2014	0.40

Over the past year, the correlation between FSK and ENFR has dropped to 0.01 - well below their long-term average of 0.40, suggesting their price drivers have been diverging.

Return for Risk

FSK vs. ENFR — Risk / Return Rank

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

FSK

FSK Risk / Return Rank: 6
FSK Sharpe Ratio Rank: 1
FSK Sortino Ratio Rank: 3
FSK Omega Ratio Rank: 3
FSK Calmar Ratio Rank: 11
FSK Martin Ratio Rank: 12

ENFR

ENFR Risk / Return Rank: 50
ENFR Sharpe Ratio Rank: 50
ENFR Sortino Ratio Rank: 48
ENFR Omega Ratio Rank: 47
ENFR Calmar Ratio Rank: 59
ENFR Martin Ratio Rank: 48

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.

FSK vs. ENFR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for FS KKR Capital Corp. (FSK) and Alerian Energy Infrastructure ETF (ENFR). 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.

	FSK	ENFR	Difference
Sharpe ratio: Return per unit of total volatility	-1.30	1.75	-3.05
Sortino ratio: Return per unit of downside risk	-1.85	2.41	-4.25
Omega ratio: Gain probability vs. loss probability	0.75	1.30	-0.55
Calmar ratio: Return relative to maximum drawdown	-0.78	2.95	-3.73
Martin ratio: Return relative to average drawdown	-1.24	8.06	-9.30
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FSK vs. ENFR - Sharpe Ratio Comparison

The current FSK Sharpe Ratio is -1.30, which is lower than the ENFR Sharpe Ratio of 1.75. The chart below compares the historical Sharpe Ratios of FSK and ENFR, 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

	FSK	ENFR	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-1.30	1.75	-3.05
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.04	1.04	-1.07
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.09	0.49	-0.40
Sharpe Ratio (All Time) Calculated using the full available price history	0.10	0.34	-0.24

Drawdowns

FSK vs. ENFR - Drawdown Comparison

The maximum FSK drawdown since its inception was -67.20%, roughly equal to the maximum ENFR drawdown of -68.28%. Use the drawdown chart below to compare losses from any high point for FSK and ENFR.

Drawdown Indicators

	FSK	ENFR	Difference
Max Drawdown Largest peak-to-trough decline	-67.20%	-68.28%	+1.08%
Max Drawdown (1Y) Largest decline over 1 year	-51.01%	-8.64%	-42.37%
Max Drawdown (3Y) Largest decline over 3 years	-51.03%	-15.58%	-35.45%
Max Drawdown (5Y) Largest decline over 5 years	-51.03%	-20.29%	-30.74%
Max Drawdown (10Y) Largest decline over 10 years	-67.20%	-62.64%	-4.56%
Current Drawdown Current decline from peak	-45.02%	-4.95%	-40.07%
Average Drawdown Average peak-to-trough decline	-13.46%	-15.98%	+2.52%
Ulcer Index Depth and duration of drawdowns from previous peaks	32.03%	3.16%	+28.87%

Volatility

FSK vs. ENFR - Volatility Comparison

FS KKR Capital Corp. (FSK) has a higher volatility of 6.84% compared to Alerian Energy Infrastructure ETF (ENFR) at 6.18%. This indicates that FSK's price experiences larger fluctuations and is considered to be riskier than ENFR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FSK	ENFR	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.84%	6.18%	+0.66%
Volatility (6M) Calculated over the trailing 6-month period	26.48%	11.47%	+15.01%
Volatility (1Y) Calculated over the trailing 1-year period	30.52%	14.64%	+15.88%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.05%	19.30%	+4.75%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	27.90%	24.69%	+3.21%

Dividends

FSK vs. ENFR - Dividend Comparison

FSK's dividend yield for the trailing twelve months is around 23.89%, more than ENFR's 4.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ENFR Alerian Energy Infrastructure ETF	4.03%	4.77%	4.41%	5.48%	5.23%	7.86%	7.57%	5.81%	3.98%	2.98%	3.31%	3.34%
FSK FS KKR Capital Corp.	23.89%	18.91%	13.35%	14.77%	15.20%	11.80%	15.46%	12.40%	16.41%	11.68%	8.65%	9.91%

Frequently Asked Questions

Can I hold both FSK and ENFR in my portfolio?

FSK and ENFR have a correlation of 0.01, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FSK or ENFR?

FSK has higher volatility (6.84%) compared to ENFR (6.18%). In terms of maximum drawdown, FSK dropped -67.20% vs ENFR's -68.28%.

Which has better risk-adjusted returns?

ENFR currently has the higher Sharpe Ratio (1.75 vs -1.30), 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.