BILPX vs. MRSIX

Last updated Jun 4, 2026

BILPX (BlackRock Event Driven Equity Fund) and MRSIX (MFS Research International Fund) are both mutual funds - BILPX is a Event Driven fund managed by BlackRock, while MRSIX is a Foreign Large Cap Equities fund managed by MFS. Over the past 10 years, BILPX returned 4.96%/yr vs 8.71%/yr for MRSIX. A 0.62 correlation means they provide meaningful diversification when combined. BILPX charges 1.16%/yr vs 0.76%/yr for MRSIX.

Performance

BILPX vs. MRSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BlackRock Event Driven Equity Fund (BILPX) and MFS Research International Fund (MRSIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BILPX achieves a 1.35% return, which is significantly lower than MRSIX's 8.90% return. Over the past 10 years, BILPX has underperformed MRSIX with an annualized return of 4.96%, while MRSIX has yielded a comparatively higher 8.71% annualized return.

BILPX

• 1D: -0.38%
• 1M: -0.09%
• YTD: 1.35%
• 6M: 2.29%
• 1Y: 5.16%
• 3Y*: 6.85%
• 5Y*: 3.61%
• 10Y*: 4.96%

MRSIX

• 1D: 0.61%
• 1M: 3.58%
• YTD: 8.90%
• 6M: 11.09%
• 1Y: 16.77%
• 3Y*: 12.87%
• 5Y*: 5.79%
• 10Y*: 8.71%

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

BILPX vs. MRSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BILPX BlackRock Event Driven Equity Fund	1.35%	8.43%	4.37%	5.38%	0.01%	1.95%	6.30%	7.29%	5.47%	7.15%
MRSIX MFS Research International Fund	8.90%	22.61%	3.06%	13.44%	-17.33%	11.87%	13.18%	27.98%	-13.98%	28.38%

Correlation

The correlation between BILPX and MRSIX is 0.46, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.46
Correlation (3Y) Calculated over the trailing 3-year period	0.52
Correlation (5Y) Calculated over the trailing 5-year period	0.58
Correlation (10Y) Calculated over the trailing 10-year period	0.52
Correlation (All Time) Calculated using the full available price history since Dec 21, 2007	0.62

The correlation between BILPX and MRSIX shifts across timeframes, from 0.46 (1 year) to 0.62 (all time), reflecting how their relationship changes across market environments.

Return for Risk

BILPX vs. MRSIX — Risk / Return Rank

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

BILPX

BILPX Risk / Return Rank: 55
BILPX Sharpe Ratio Rank: 40
BILPX Sortino Ratio Rank: 44
BILPX Omega Ratio Rank: 45
BILPX Calmar Ratio Rank: 78
BILPX Martin Ratio Rank: 71

MRSIX

MRSIX Risk / Return Rank: 17
MRSIX Sharpe Ratio Rank: 18
MRSIX Sortino Ratio Rank: 18
MRSIX Omega Ratio Rank: 18
MRSIX Calmar Ratio Rank: 15
MRSIX Martin Ratio Rank: 17

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.

BILPX vs. MRSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BlackRock Event Driven Equity Fund (BILPX) and MFS Research International Fund (MRSIX). 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.

	BILPX	MRSIX	Difference
Sharpe ratio: Return per unit of total volatility	1.84	1.21	+0.63
Sortino ratio: Return per unit of downside risk	2.78	1.76	+1.02
Omega ratio: Gain probability vs. loss probability	1.36	1.22	+0.14
Calmar ratio: Return relative to maximum drawdown	3.52	1.37	+2.15
Martin ratio: Return relative to average drawdown	13.62	4.79	+8.83
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BILPX vs. MRSIX - Sharpe Ratio Comparison

The current BILPX Sharpe Ratio is 1.84, which is higher than the MRSIX Sharpe Ratio of 1.21. The chart below compares the historical Sharpe Ratios of BILPX and MRSIX, 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

	BILPX	MRSIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.84	1.21	+0.63
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.89	0.39	+0.50
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.07	0.57	+0.51
Sharpe Ratio (All Time) Calculated using the full available price history	0.36	0.39	-0.02

Drawdowns

BILPX vs. MRSIX - Drawdown Comparison

The maximum BILPX drawdown since its inception was -47.50%, smaller than the maximum MRSIX drawdown of -59.56%. Use the drawdown chart below to compare losses from any high point for BILPX and MRSIX.

Drawdown Indicators

	BILPX	MRSIX	Difference
Max Drawdown Largest peak-to-trough decline	-47.50%	-59.56%	+12.06%
Max Drawdown (1Y) Largest decline over 1 year	-1.53%	-11.64%	+10.11%
Max Drawdown (3Y) Largest decline over 3 years	-3.33%	-13.95%	+10.62%
Max Drawdown (5Y) Largest decline over 5 years	-5.18%	-30.73%	+25.55%
Max Drawdown (10Y) Largest decline over 10 years	-11.58%	-30.73%	+19.15%
Current Drawdown Current decline from peak	-0.75%	-1.90%	+1.15%
Average Drawdown Average peak-to-trough decline	-5.53%	-12.75%	+7.22%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.39%	3.34%	-2.95%

Volatility

BILPX vs. MRSIX - Volatility Comparison

The current volatility for BlackRock Event Driven Equity Fund (BILPX) is 0.82%, while MFS Research International Fund (MRSIX) has a volatility of 4.01%. This indicates that BILPX experiences smaller price fluctuations and is considered to be less risky than MRSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BILPX	MRSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.82%	4.01%	-3.19%
Volatility (6M) Calculated over the trailing 6-month period	2.22%	10.64%	-8.42%
Volatility (1Y) Calculated over the trailing 1-year period	2.93%	13.30%	-10.37%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.09%	14.92%	-10.83%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.64%	15.46%	-10.82%

BILPX vs. MRSIX - Expense Ratio Comparison

BILPX has a 1.16% expense ratio, which is higher than MRSIX's 0.76% expense ratio.

Dividends

BILPX vs. MRSIX - Dividend Comparison

BILPX's dividend yield for the trailing twelve months is around 4.14%, less than MRSIX's 4.83% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BILPX BlackRock Event Driven Equity Fund	4.14%	4.19%	4.16%	1.99%	2.58%	2.66%	2.97%	3.41%	1.97%	5.12%	1.11%	74.64%
MRSIX MFS Research International Fund	4.83%	5.26%	2.00%	1.67%	1.57%	1.29%	0.92%	1.79%	5.48%	1.21%	1.97%	1.89%

Frequently Asked Questions

Can I hold both BILPX and MRSIX in my portfolio?

BILPX and MRSIX have a correlation of 0.46, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BILPX or MRSIX?

MRSIX has higher volatility (4.01%) compared to BILPX (0.82%). In terms of maximum drawdown, BILPX dropped -47.50% vs MRSIX's -59.56%.

Which has better risk-adjusted returns?

BILPX currently has the higher Sharpe Ratio (1.84 vs 1.21), 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.