MCSRX vs. BCSKX

Last updated Jun 24, 2026

MCSRX (MFS Commodity Strategy Fund) and BCSKX (BlackRock Commodity Strategies Fund Class K) are both Commodities funds - MCSRX tracks the Bloomberg Commodity Index while BCSKX tracks the Bloomberg Commodity Index Total Return. Both are passively managed. Over the past 5 years, MCSRX returned 10.48%/yr vs 11.08%/yr for BCSKX. A 0.76 correlation means they provide meaningful diversification when combined. MCSRX charges 0.82%/yr vs 0.67%/yr for BCSKX.

Performance

MCSRX vs. BCSKX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Commodity Strategy Fund (MCSRX) and BlackRock Commodity Strategies Fund Class K (BCSKX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MCSRX achieves a 15.51% return, which is significantly higher than BCSKX's 12.64% return.

MCSRX

• 1D: -0.71%
• 1M: -7.33%
• YTD: 15.51%
• 6M: 13.93%
• 1Y: 25.03%
• 3Y*: 13.39%
• 5Y*: 10.48%
• 10Y*: 6.59%

BCSKX

• 1D: -0.17%
• 1M: -6.71%
• YTD: 12.64%
• 6M: 11.14%
• 1Y: 28.34%
• 3Y*: 15.47%
• 5Y*: 11.08%
• 10Y*: —

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

MCSRX vs. BCSKX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
MCSRX MFS Commodity Strategy Fund	15.51%	18.63%	5.18%	-6.07%	13.19%	27.96%	-0.36%	7.80%	-15.18%
BCSKX BlackRock Commodity Strategies Fund Class K	12.64%	28.88%	4.44%	-4.27%	11.95%	22.49%	6.84%	3.89%	2.06%

Correlation

The correlation between MCSRX and BCSKX is 0.85, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.85
Correlation (3Y) Calculated over the trailing 3-year period	0.82
Correlation (5Y) Calculated over the trailing 5-year period	0.83
Correlation (All Time) Calculated using the full available price history since Jan 29, 2018	0.76

The correlation between MCSRX and BCSKX has been stable across timeframes, ranging from 0.76 to 0.85 - a consistent structural relationship.

Return for Risk

MCSRX vs. BCSKX — Risk / Return Rank

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

MCSRX

MCSRX Risk / Return Rank: 35
MCSRX Sharpe Ratio Rank: 32
MCSRX Sortino Ratio Rank: 27
MCSRX Omega Ratio Rank: 31
MCSRX Calmar Ratio Rank: 42
MCSRX Martin Ratio Rank: 44

BCSKX

BCSKX Risk / Return Rank: 53
BCSKX Sharpe Ratio Rank: 47
BCSKX Sortino Ratio Rank: 39
BCSKX Omega Ratio Rank: 41
BCSKX Calmar Ratio Rank: 70
BCSKX Martin Ratio Rank: 69

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.

MCSRX vs. BCSKX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Commodity Strategy Fund (MCSRX) and BlackRock Commodity Strategies Fund Class K (BCSKX). 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.

	MCSRX	BCSKX	Difference
Sharpe ratio: Return per unit of total volatility	1.49	1.86	-0.37
Sortino ratio: Return per unit of downside risk	1.98	2.42	-0.44
Omega ratio: Gain probability vs. loss probability	1.27	1.32	-0.05
Calmar ratio: Return relative to maximum drawdown	2.36	3.07	-0.71
Martin ratio: Return relative to average drawdown	8.78	12.40	-3.62

MCSRX vs. BCSKX - Sharpe Ratio Comparison

The current MCSRX Sharpe Ratio is 1.49, which is comparable to the BCSKX Sharpe Ratio of 1.86. The chart below compares the historical Sharpe Ratios of MCSRX and BCSKX, 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

MCSRX vs. BCSKX - Drawdown Comparison

The maximum MCSRX drawdown since its inception was -72.07%, which is greater than BCSKX's maximum drawdown of -30.34%. Use the drawdown chart below to compare losses from any high point for MCSRX and BCSKX.

Drawdown Indicators

	MCSRX	BCSKX	Difference
Max Drawdown Largest peak-to-trough decline	-72.07%	-30.34%	-41.73%
Max Drawdown (1Y) Largest decline over 1 year	-10.13%	-8.97%	-1.16%
Max Drawdown (3Y) Largest decline over 3 years	-10.13%	-10.51%	+0.38%
Max Drawdown (5Y) Largest decline over 5 years	-37.76%	-22.34%	-15.42%
Max Drawdown (10Y) Largest decline over 10 years	-72.07%	—	—
Current Drawdown Current decline from peak	-23.72%	-8.97%	-14.75%
Average Drawdown Average peak-to-trough decline	-41.77%	-6.56%	-35.21%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.88%	2.23%	+0.65%

Volatility

MCSRX vs. BCSKX - Volatility Comparison

The current volatility for MFS Commodity Strategy Fund (MCSRX) is 3.61%, while BlackRock Commodity Strategies Fund Class K (BCSKX) has a volatility of 3.86%. This indicates that MCSRX experiences smaller price fluctuations and is considered to be less risky than BCSKX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MCSRX	BCSKX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.61%	3.86%	-0.25%
Volatility (6M) Calculated over the trailing 6-month period	13.81%	12.13%	+1.68%
Volatility (1Y) Calculated over the trailing 1-year period	16.06%	14.84%	+1.22%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	34.75%	15.75%	+19.00%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	59.92%	15.04%	+44.88%

MCSRX vs. BCSKX - Expense Ratio Comparison

MCSRX has a 0.82% expense ratio, which is higher than BCSKX's 0.67% expense ratio.

Dividends

MCSRX vs. BCSKX - Dividend Comparison

MCSRX's dividend yield for the trailing twelve months is around 14.00%, more than BCSKX's 2.78% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BCSKX BlackRock Commodity Strategies Fund Class K	2.78%	3.13%	3.66%	9.45%	9.11%	2.72%	0.84%	2.08%	2.02%	0.00%	0.00%	0.00%
MCSRX MFS Commodity Strategy Fund	14.00%	16.18%	3.39%	2.30%	27.57%	56.15%	0.91%	1.88%	3.50%	3.13%	0.61%	0.47%

Frequently Asked Questions

Can I hold both MCSRX and BCSKX in my portfolio?

MCSRX and BCSKX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MCSRX or BCSKX?

BCSKX has higher volatility (3.86%) compared to MCSRX (3.61%). In terms of maximum drawdown, MCSRX dropped -72.07% vs BCSKX's -30.34%.

Which has better risk-adjusted returns?

BCSKX currently has the higher Sharpe Ratio (1.86 vs 1.49), 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.