MVCAX vs. COSIX

Last updated Jul 15, 2026

MVCAX (MFS Mid Cap Value Fund) and COSIX (Columbia Strategic Income Fund) are both mutual funds - MVCAX is a Mid Cap Value Equities fund managed by MFS, while COSIX is a Nontraditional Bonds fund managed by Columbia. Over the past 10 years, MVCAX returned 10.05%/yr vs 3.31%/yr for COSIX. At a 0.19 correlation, their price movements are largely independent. MVCAX charges 1.02%/yr vs 0.92%/yr for COSIX.

Performance

MVCAX vs. COSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Mid Cap Value Fund (MVCAX) and Columbia Strategic Income Fund (COSIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MVCAX achieves a 13.27% return, which is significantly higher than COSIX's 1.17% return. Over the past 10 years, MVCAX has outperformed COSIX with an annualized return of 10.05%, while COSIX has yielded a comparatively lower 3.31% annualized return.

MVCAX

• 1D: 0.12%
• 1M: 1.88%
• 6M: 9.41%
• YTD: 13.27%
• 1Y: 17.15%
• 3Y*: 12.62%
• 5Y*: 9.06%
• 10Y*: 10.05%

COSIX

• 1D: -0.23%
• 1M: -0.27%
• 6M: 0.85%
• YTD: 1.17%
• 1Y: 4.03%
• 3Y*: 5.90%
• 5Y*: 1.70%
• 10Y*: 3.31%

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

MVCAX vs. COSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MVCAX MFS Mid Cap Value Fund	13.27%	6.09%	13.57%	12.51%	-8.96%	30.43%	4.03%	30.57%	-11.69%	13.37%
COSIX Columbia Strategic Income Fund	1.17%	6.98%	4.50%	9.86%	-11.65%	1.34%	7.12%	10.19%	-0.96%	5.48%

Correlation

The correlation between MVCAX and COSIX is 0.48, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.48
Correlation (3Y) Calculated over the trailing 3-year period	0.36
Correlation (5Y) Calculated over the trailing 5-year period	0.30
Correlation (10Y) Calculated over the trailing 10-year period	0.25
Correlation (All Time) Calculated using the full available price history since Aug 31, 2001	0.19

Over the past year, MVCAX and COSIX have become more correlated (0.48) than their long-term average of 0.19, meaning their price movements have been converging.

Return for Risk

MVCAX vs. COSIX — Risk / Return Rank

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

MVCAX

MVCAX Risk / Return Rank: 35
MVCAX Sharpe Ratio Rank: 34
MVCAX Sortino Ratio Rank: 37
MVCAX Omega Ratio Rank: 33
MVCAX Calmar Ratio Rank: 37
MVCAX Martin Ratio Rank: 36

COSIX

COSIX Risk / Return Rank: 39
COSIX Sharpe Ratio Rank: 40
COSIX Sortino Ratio Rank: 42
COSIX Omega Ratio Rank: 37
COSIX Calmar Ratio Rank: 37
COSIX Martin Ratio Rank: 42

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.

MVCAX vs. COSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Mid Cap Value Fund (MVCAX) and Columbia Strategic Income Fund (COSIX). 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.

	MVCAX	COSIX	Difference
Sharpe ratio: Return per unit of total volatility	1.28	1.39	-0.11
Sortino ratio: Return per unit of downside risk	1.92	2.06	-0.14
Omega ratio: Gain probability vs. loss probability	1.23	1.24	-0.02
Calmar ratio: Return relative to maximum drawdown	1.83	1.81	+0.02
Martin ratio: Return relative to average drawdown	6.26	7.06	-0.79

MVCAX vs. COSIX - Sharpe Ratio Comparison

The current MVCAX Sharpe Ratio is 1.28, which is comparable to the COSIX Sharpe Ratio of 1.39. The chart below compares the historical Sharpe Ratios of MVCAX and COSIX, 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

MVCAX vs. COSIX - Drawdown Comparison

The maximum MVCAX drawdown since its inception was -60.41%, which is greater than COSIX's maximum drawdown of -27.69%. Use the drawdown chart below to compare losses from any high point for MVCAX and COSIX.

Drawdown Indicators

	MVCAX	COSIX	Difference
Max Drawdown Largest peak-to-trough decline	-60.41%	-27.69%	-32.72%
Max Drawdown (1Y) Largest decline over 1 year	-9.39%	-2.21%	-7.18%
Max Drawdown (3Y) Largest decline over 3 years	-21.05%	-4.17%	-16.88%
Max Drawdown (5Y) Largest decline over 5 years	-21.05%	-16.88%	-4.17%
Max Drawdown (10Y) Largest decline over 10 years	-42.79%	-16.88%	-25.91%
Current Drawdown Current decline from peak	-0.29%	-0.64%	+0.35%
Average Drawdown Average peak-to-trough decline	-8.10%	-2.46%	-5.64%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.74%	0.57%	+2.17%

Volatility

MVCAX vs. COSIX - Volatility Comparison

MFS Mid Cap Value Fund (MVCAX) has a higher volatility of 3.51% compared to Columbia Strategic Income Fund (COSIX) at 0.81%. This indicates that MVCAX's price experiences larger fluctuations and is considered to be riskier than COSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MVCAX	COSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.51%	0.81%	+2.70%
Volatility (6M) Calculated over the trailing 6-month period	9.73%	2.28%	+7.45%
Volatility (1Y) Calculated over the trailing 1-year period	13.52%	2.88%	+10.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.18%	4.57%	+12.61%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.18%	4.15%	+15.03%

MVCAX vs. COSIX - Expense Ratio Comparison

MVCAX has a 1.02% expense ratio, which is higher than COSIX's 0.92% expense ratio.

Dividends

MVCAX vs. COSIX - Dividend Comparison

MVCAX's dividend yield for the trailing twelve months is around 7.24%, more than COSIX's 5.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
COSIX Columbia Strategic Income Fund	5.02%	4.94%	5.20%	5.03%	3.56%	3.86%	3.24%	3.71%	4.25%	3.51%	3.09%	4.20%
MVCAX MFS Mid Cap Value Fund	7.24%	8.21%	10.99%	2.73%	5.22%	5.70%	0.80%	2.03%	6.36%	3.36%	0.07%	4.59%

Frequently Asked Questions

Can I hold both MVCAX and COSIX in my portfolio?

MVCAX and COSIX have a correlation of 0.48, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MVCAX or COSIX?

MVCAX has higher volatility (3.51%) compared to COSIX (0.81%). In terms of maximum drawdown, MVCAX dropped -60.41% vs COSIX's -27.69%.

Which has better risk-adjusted returns?

COSIX currently has the higher Sharpe Ratio (1.39 vs 1.28), 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.