SWMCX vs. BMSLX

Last updated Apr 1, 2026

Compare and contrast key facts about Schwab U.S. Mid-Cap Index Fund (SWMCX) and MFS Blended Research Mid Cap Equity Fund (BMSLX).

SWMCX is managed by Charles Schwab. It was launched on Dec 20, 2017. BMSLX is managed by MFS. It was launched on Aug 19, 2016.

Performance

SWMCX vs. BMSLX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Schwab U.S. Mid-Cap Index Fund (SWMCX) and MFS Blended Research Mid Cap Equity Fund (BMSLX). The values are adjusted to include any dividend payments, if applicable.

SWMCX vs. BMSLX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SWMCX Schwab U.S. Mid-Cap Index Fund	-1.32%	10.54%	15.28%	17.20%	-17.31%	22.55%	17.03%	30.46%	-9.16%	0.40%
BMSLX MFS Blended Research Mid Cap Equity Fund	-2.30%	8.08%	19.25%	19.81%	-13.70%	26.54%	10.44%	30.21%	-11.11%	0.34%

Returns By Period

In the year-to-date period, SWMCX achieves a -1.32% return, which is significantly higher than BMSLX's -2.30% return.

SWMCX

• 1D: -0.70%
• 1M: -7.73%
• YTD: -1.32%
• 6M: -1.19%
• 1Y: 12.94%
• 3Y*: 12.30%
• 5Y*: 6.67%
• 10Y*: —

BMSLX

• 1D: -0.55%
• 1M: -8.13%
• YTD: -2.30%
• 6M: -3.55%
• 1Y: 9.16%
• 3Y*: 13.00%
• 5Y*: 8.62%
• 10Y*: —

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

SWMCX vs. BMSLX - Expense Ratio Comparison

SWMCX has a 0.04% expense ratio, which is lower than BMSLX's 0.59% expense ratio.

BMSLX

MFS Blended Research Mid Cap Equity Fund

SWMCX

Schwab U.S. Mid-Cap Index Fund

Return for Risk

SWMCX vs. BMSLX — Risk / Return Rank

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

SWMCX

SWMCX Risk / Return Rank: 34
SWMCX Sharpe Ratio Rank: 32
SWMCX Sortino Ratio Rank: 33
SWMCX Omega Ratio Rank: 33
SWMCX Calmar Ratio Rank: 31
SWMCX Martin Ratio Rank: 39

BMSLX

BMSLX Risk / Return Rank: 19
BMSLX Sharpe Ratio Rank: 19
BMSLX Sortino Ratio Rank: 20
BMSLX Omega Ratio Rank: 20
BMSLX Calmar Ratio Rank: 18
BMSLX Martin Ratio Rank: 21

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.

SWMCX vs. BMSLX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Schwab U.S. Mid-Cap Index Fund (SWMCX) and MFS Blended Research Mid Cap Equity Fund (BMSLX). 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.

	SWMCX	BMSLX	Difference
Sharpe ratio Return per unit of total volatility	0.72	0.48	+0.23
Sortino ratio Return per unit of downside risk	1.12	0.82	+0.30
Omega ratio Gain probability vs. loss probability	1.16	1.11	+0.04
Calmar ratio Return relative to maximum drawdown	0.86	0.54	+0.32
Martin ratio Return relative to average drawdown	4.04	2.18	+1.86
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SWMCX vs. BMSLX - Sharpe Ratio Comparison

The current SWMCX Sharpe Ratio is 0.72, which is higher than the BMSLX Sharpe Ratio of 0.48. The chart below compares the historical Sharpe Ratios of SWMCX and BMSLX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	SWMCX	BMSLX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.72	0.48	+0.23
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.37	0.47	-0.10
Sharpe Ratio (All Time) Calculated using the full available price history	0.45	0.52	-0.08

Correlation

The correlation between SWMCX and BMSLX is 0.97, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

SWMCX vs. BMSLX - Dividend Comparison

SWMCX's dividend yield for the trailing twelve months is around 2.15%, less than BMSLX's 3.15% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
SWMCX Schwab U.S. Mid-Cap Index Fund	2.15%	2.13%	2.60%	1.49%	1.59%	2.93%	1.45%	2.44%	1.41%	0.00%	0.00%
BMSLX MFS Blended Research Mid Cap Equity Fund	3.15%	3.08%	10.98%	2.32%	5.15%	23.06%	0.94%	4.90%	8.27%	2.63%	0.47%

Drawdowns

SWMCX vs. BMSLX - Drawdown Comparison

The maximum SWMCX drawdown since its inception was -40.34%, roughly equal to the maximum BMSLX drawdown of -41.06%. Use the drawdown chart below to compare losses from any high point for SWMCX and BMSLX.

Drawdown Indicators

	SWMCX	BMSLX	Difference
Max Drawdown Largest peak-to-trough decline	-40.34%	-41.06%	+0.72%
Max Drawdown (1Y) Largest decline over 1 year	-13.43%	-14.24%	+0.81%
Max Drawdown (5Y) Largest decline over 5 years	-26.09%	-22.28%	-3.81%
Current Drawdown Current decline from peak	-8.15%	-9.17%	+1.02%
Average Drawdown Average peak-to-trough decline	-6.75%	-5.12%	-1.63%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.87%	3.55%	-0.68%

Volatility

SWMCX vs. BMSLX - Volatility Comparison

Schwab U.S. Mid-Cap Index Fund (SWMCX) and MFS Blended Research Mid Cap Equity Fund (BMSLX) have volatilities of 4.80% and 5.00%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SWMCX	BMSLX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.80%	5.00%	-0.20%
Volatility (6M) Calculated over the trailing 6-month period	10.19%	10.63%	-0.44%
Volatility (1Y) Calculated over the trailing 1-year period	18.96%	19.91%	-0.95%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.23%	18.37%	-0.14%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.76%	19.80%	+0.96%