BRXIX vs. CIGIX

Last updated Jun 4, 2026

BRXIX (MFS Blended Research International Equity Fund) and CIGIX (Calamos International Growth Fund) are both Foreign Large Cap Equities funds. Over the past 10 years, BRXIX returned 11.60%/yr vs 10.46%/yr for CIGIX. Their correlation of 0.88 suggests significant overlap in exposure. BRXIX charges 0.64%/yr vs 0.85%/yr for CIGIX.

Performance

BRXIX vs. CIGIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Blended Research International Equity Fund (BRXIX) and Calamos International Growth Fund (CIGIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BRXIX achieves a 17.54% return, which is significantly lower than CIGIX's 34.54% return. Over the past 10 years, BRXIX has outperformed CIGIX with an annualized return of 11.60%, while CIGIX has yielded a comparatively lower 10.46% annualized return.

BRXIX

• 1D: 1.04%
• 1M: 8.06%
• YTD: 17.54%
• 6M: 20.49%
• 1Y: 40.30%
• 3Y*: 25.10%
• 5Y*: 12.79%
• 10Y*: 11.60%

CIGIX

• 1D: 0.26%
• 1M: 13.78%
• YTD: 34.54%
• 6M: 37.88%
• 1Y: 48.17%
• 3Y*: 25.69%
• 5Y*: 4.90%
• 10Y*: 10.46%

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

BRXIX vs. CIGIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BRXIX MFS Blended Research International Equity Fund	17.54%	39.87%	11.82%	14.42%	-13.36%	13.38%	9.09%	22.13%	-15.56%	25.21%
CIGIX Calamos International Growth Fund	34.54%	23.11%	12.51%	15.33%	-30.54%	-8.98%	44.95%	29.69%	-20.93%	39.54%

Correlation

The correlation between BRXIX and CIGIX 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	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (10Y) Calculated over the trailing 10-year period	0.88
Correlation (All Time) Calculated using the full available price history since Sep 18, 2015	0.88

The correlation between BRXIX and CIGIX has been stable across timeframes, ranging from 0.85 to 0.89 - a consistent structural relationship.

Return for Risk

BRXIX vs. CIGIX — Risk / Return Rank

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

BRXIX

BRXIX Risk / Return Rank: 82
BRXIX Sharpe Ratio Rank: 89
BRXIX Sortino Ratio Rank: 84
BRXIX Omega Ratio Rank: 83
BRXIX Calmar Ratio Rank: 79
BRXIX Martin Ratio Rank: 74

CIGIX

CIGIX Risk / Return Rank: 52
CIGIX Sharpe Ratio Rank: 51
CIGIX Sortino Ratio Rank: 46
CIGIX Omega Ratio Rank: 47
CIGIX Calmar Ratio Rank: 61
CIGIX Martin Ratio Rank: 55

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.

BRXIX vs. CIGIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Blended Research International Equity Fund (BRXIX) and Calamos International Growth Fund (CIGIX). 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.

	BRXIX	CIGIX	Difference
Sharpe ratio Return per unit of total volatility	2.94	2.09	+0.85
Sortino ratio Return per unit of downside risk	3.98	2.84	+1.14
Omega ratio Gain probability vs. loss probability	1.55	1.37	+0.18
Calmar ratio Return relative to maximum drawdown	3.58	3.01	+0.57
Martin ratio Return relative to average drawdown	14.08	11.14	+2.94
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BRXIX vs. CIGIX - Sharpe Ratio Comparison

The current BRXIX Sharpe Ratio is 2.94, which is higher than the CIGIX Sharpe Ratio of 2.09. The chart below compares the historical Sharpe Ratios of BRXIX and CIGIX, 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

	BRXIX	CIGIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.94	2.09	+0.85
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.88	0.23	+0.64
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.74	0.53	+0.21
Sharpe Ratio (All Time) Calculated using the full available price history	0.65	0.38	+0.27

Drawdowns

BRXIX vs. CIGIX - Drawdown Comparison

The maximum BRXIX drawdown since its inception was -36.21%, smaller than the maximum CIGIX drawdown of -64.46%. Use the drawdown chart below to compare losses from any high point for BRXIX and CIGIX.

Drawdown Indicators

	BRXIX	CIGIX	Difference
Max Drawdown Largest peak-to-trough decline	-36.21%	-64.46%	+28.25%
Max Drawdown (1Y) Largest decline over 1 year	-11.21%	-15.88%	+4.67%
Max Drawdown (3Y) Largest decline over 3 years	-12.72%	-19.38%	+6.66%
Max Drawdown (5Y) Largest decline over 5 years	-26.48%	-50.15%	+23.67%
Max Drawdown (10Y) Largest decline over 10 years	-36.21%	-50.15%	+13.94%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-6.90%	-15.29%	+8.39%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.84%	4.28%	-1.44%

Volatility

BRXIX vs. CIGIX - Volatility Comparison

The current volatility for MFS Blended Research International Equity Fund (BRXIX) is 5.01%, while Calamos International Growth Fund (CIGIX) has a volatility of 9.54%. This indicates that BRXIX experiences smaller price fluctuations and is considered to be less risky than CIGIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BRXIX	CIGIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.01%	9.54%	-4.53%
Volatility (6M) Calculated over the trailing 6-month period	11.54%	19.73%	-8.19%
Volatility (1Y) Calculated over the trailing 1-year period	13.68%	22.82%	-9.14%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.67%	21.07%	-6.40%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.81%	19.98%	-4.17%

BRXIX vs. CIGIX - Expense Ratio Comparison

BRXIX has a 0.64% expense ratio, which is lower than CIGIX's 0.85% expense ratio.

Dividends

BRXIX vs. CIGIX - Dividend Comparison

BRXIX's dividend yield for the trailing twelve months is around 3.58%, less than CIGIX's 10.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BRXIX MFS Blended Research International Equity Fund	3.58%	4.21%	4.81%	2.81%	2.68%	7.23%	2.32%	2.91%	6.83%	1.13%	0.53%	0.54%
CIGIX Calamos International Growth Fund	10.02%	13.49%	4.54%	0.28%	0.00%	0.33%	5.42%	0.00%	13.25%	3.76%	0.00%	0.13%

Frequently Asked Questions

Can I hold both BRXIX and CIGIX in my portfolio?

BRXIX and CIGIX 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, BRXIX or CIGIX?

CIGIX has higher volatility (9.54%) compared to BRXIX (5.01%). In terms of maximum drawdown, BRXIX dropped -36.21% vs CIGIX's -64.46%.

Which has better risk-adjusted returns?

BRXIX currently has the higher Sharpe Ratio (2.94 vs 2.09), 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.