BCSVX vs. MWNIX

Last updated Jul 14, 2026

BCSVX (Brown Capital Management International Small Company Fund) and MWNIX (MFS International New Discovery Fund) are both Foreign Small & Mid Cap Equities funds. Over the past 10 years, BCSVX returned 7.21%/yr vs 6.43%/yr for MWNIX. A 0.74 correlation means they provide meaningful diversification when combined. BCSVX charges 1.31%/yr vs 1.03%/yr for MWNIX.

Performance

BCSVX vs. MWNIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Brown Capital Management International Small Company Fund (BCSVX) and MFS International New Discovery Fund (MWNIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BCSVX achieves a -11.23% return, which is significantly lower than MWNIX's 6.89% return. Over the past 10 years, BCSVX has outperformed MWNIX with an annualized return of 7.21%, while MWNIX has yielded a comparatively lower 6.43% annualized return.

BCSVX

• 1D: -0.19%
• 1M: 1.30%
• 6M: -12.52%
• YTD: -11.23%
• 1Y: -22.87%
• 3Y*: -0.18%
• 5Y*: -4.03%
• 10Y*: 7.21%

MWNIX

• 1D: 0.36%
• 1M: 0.84%
• 6M: 4.32%
• YTD: 6.89%
• 1Y: 8.74%
• 3Y*: 9.94%
• 5Y*: 2.91%
• 10Y*: 6.43%

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

BCSVX vs. MWNIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BCSVX Brown Capital Management International Small Company Fund	-11.23%	-2.30%	8.17%	20.04%	-31.56%	12.69%	44.75%	26.41%	-3.39%	36.56%
MWNIX MFS International New Discovery Fund	6.89%	16.88%	0.90%	13.03%	-18.63%	5.06%	9.98%	22.85%	-10.41%	30.67%

Correlation

The correlation between BCSVX and MWNIX is 0.71, 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	0.71
Correlation (3Y) Calculated over the trailing 3-year period	0.73
Correlation (5Y) Calculated over the trailing 5-year period	0.77
Correlation (10Y) Calculated over the trailing 10-year period	0.73
Correlation (All Time) Calculated using the full available price history since Jan 4, 2016	0.74

The correlation between BCSVX and MWNIX has been stable across timeframes, ranging from 0.71 to 0.77 - a consistent structural relationship.

Return for Risk

BCSVX vs. MWNIX — Risk / Return Rank

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

BCSVX

BCSVX Risk / Return Rank: 0
BCSVX Sharpe Ratio Rank: 0
BCSVX Sortino Ratio Rank: 0
BCSVX Omega Ratio Rank: 0
BCSVX Calmar Ratio Rank: 1
BCSVX Martin Ratio Rank: 1

MWNIX

MWNIX Risk / Return Rank: 12
MWNIX Sharpe Ratio Rank: 12
MWNIX Sortino Ratio Rank: 12
MWNIX Omega Ratio Rank: 12
MWNIX Calmar Ratio Rank: 11
MWNIX Martin Ratio Rank: 12

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.

BCSVX vs. MWNIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Brown Capital Management International Small Company Fund (BCSVX) and MFS International New Discovery Fund (MWNIX). 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.

	BCSVX	MWNIX	Difference
Sharpe ratio: Return per unit of total volatility	-1.36	0.68	-2.04
Sortino ratio: Return per unit of downside risk	-1.93	1.03	-2.96
Omega ratio: Gain probability vs. loss probability	0.79	1.13	-0.35
Calmar ratio: Return relative to maximum drawdown	-0.73	0.71	-1.44
Martin ratio: Return relative to average drawdown	-1.25	2.37	-3.62

BCSVX vs. MWNIX - Sharpe Ratio Comparison

The current BCSVX Sharpe Ratio is -1.36, which is lower than the MWNIX Sharpe Ratio of 0.68. The chart below compares the historical Sharpe Ratios of BCSVX and MWNIX, 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

BCSVX vs. MWNIX - Drawdown Comparison

The maximum BCSVX drawdown since its inception was -43.93%, smaller than the maximum MWNIX drawdown of -58.38%. Use the drawdown chart below to compare losses from any high point for BCSVX and MWNIX.

Drawdown Indicators

	BCSVX	MWNIX	Difference
Max Drawdown Largest peak-to-trough decline	-43.93%	-58.38%	+14.45%
Max Drawdown (1Y) Largest decline over 1 year	-32.35%	-11.78%	-20.57%
Max Drawdown (3Y) Largest decline over 3 years	-32.35%	-15.12%	-17.23%
Max Drawdown (5Y) Largest decline over 5 years	-43.93%	-33.67%	-10.26%
Max Drawdown (10Y) Largest decline over 10 years	-43.93%	-34.72%	-9.21%
Current Drawdown Current decline from peak	-26.05%	-1.72%	-24.33%
Average Drawdown Average peak-to-trough decline	-12.26%	-9.55%	-2.71%
Ulcer Index Depth and duration of drawdowns from previous peaks	18.74%	3.52%	+15.22%

Volatility

BCSVX vs. MWNIX - Volatility Comparison

Brown Capital Management International Small Company Fund (BCSVX) has a higher volatility of 5.42% compared to MFS International New Discovery Fund (MWNIX) at 4.66%. This indicates that BCSVX's price experiences larger fluctuations and is considered to be riskier than MWNIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BCSVX	MWNIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.42%	4.66%	+0.76%
Volatility (6M) Calculated over the trailing 6-month period	14.72%	10.67%	+4.05%
Volatility (1Y) Calculated over the trailing 1-year period	17.27%	12.33%	+4.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.80%	13.33%	+5.47%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.04%	13.73%	+3.31%

BCSVX vs. MWNIX - Expense Ratio Comparison

BCSVX has a 1.31% expense ratio, which is higher than MWNIX's 1.03% expense ratio.

Dividends

BCSVX vs. MWNIX - Dividend Comparison

BCSVX's dividend yield for the trailing twelve months is around 0.42%, less than MWNIX's 3.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BCSVX Brown Capital Management International Small Company Fund	0.42%	0.00%	0.00%	0.00%	0.00%	5.07%	0.74%	0.30%	0.31%	0.00%	0.00%	0.00%
MWNIX MFS International New Discovery Fund	3.03%	3.24%	7.61%	4.05%	5.68%	5.06%	3.90%	2.67%	6.68%	1.63%	1.09%	1.12%

Frequently Asked Questions

Can I hold both BCSVX and MWNIX in my portfolio?

BCSVX and MWNIX have a correlation of 0.71, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BCSVX or MWNIX?

BCSVX has higher volatility (5.42%) compared to MWNIX (4.66%). In terms of maximum drawdown, BCSVX dropped -43.93% vs MWNIX's -58.38%.

Which has better risk-adjusted returns?

MWNIX currently has the higher Sharpe Ratio (0.68 vs -1.36), 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.