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MAILX vs. MDIJX
Performance
Risk-Adjusted Performance
Dividends
Drawdowns
Volatility

Correlation

The correlation between MAILX and MDIJX is 0.75, 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.


Performance

MAILX vs. MDIJX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BlackRock International Fund of BlackRock Series, Inc. (MAILX) and MFS International Diversification Fund (MDIJX). The values are adjusted to include any dividend payments, if applicable.

150.00%200.00%250.00%300.00%350.00%December2025FebruaryMarchAprilMay
172.90%
362.48%
MAILX
MDIJX

Key characteristics

Sharpe Ratio

MAILX:

0.01

MDIJX:

0.74

Sortino Ratio

MAILX:

0.16

MDIJX:

1.13

Omega Ratio

MAILX:

1.02

MDIJX:

1.16

Calmar Ratio

MAILX:

0.02

MDIJX:

0.85

Martin Ratio

MAILX:

0.09

MDIJX:

2.48

Ulcer Index

MAILX:

4.99%

MDIJX:

4.50%

Daily Std Dev

MAILX:

17.76%

MDIJX:

14.37%

Max Drawdown

MAILX:

-59.57%

MDIJX:

-54.94%

Current Drawdown

MAILX:

-17.49%

MDIJX:

0.00%

Returns By Period

In the year-to-date period, MAILX achieves a 2.82% return, which is significantly lower than MDIJX's 10.86% return. Over the past 10 years, MAILX has underperformed MDIJX with an annualized return of 3.98%, while MDIJX has yielded a comparatively higher 5.86% annualized return.


MAILX

YTD

2.82%

1M

7.73%

6M

1.03%

1Y

0.22%

5Y*

7.24%

10Y*

3.98%

MDIJX

YTD

10.86%

1M

10.96%

6M

5.70%

1Y

10.51%

5Y*

8.55%

10Y*

5.86%

*Annualized

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MAILX vs. MDIJX - Expense Ratio Comparison

MAILX has a 0.65% expense ratio, which is lower than MDIJX's 0.82% expense ratio.


Risk-Adjusted Performance

MAILX vs. MDIJX — Risk-Adjusted Performance Rank

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

MAILX
The Risk-Adjusted Performance Rank of MAILX is 2323
Overall Rank
The Sharpe Ratio Rank of MAILX is 2323
Sharpe Ratio Rank
The Sortino Ratio Rank of MAILX is 2323
Sortino Ratio Rank
The Omega Ratio Rank of MAILX is 2222
Omega Ratio Rank
The Calmar Ratio Rank of MAILX is 2323
Calmar Ratio Rank
The Martin Ratio Rank of MAILX is 2323
Martin Ratio Rank

MDIJX
The Risk-Adjusted Performance Rank of MDIJX is 7373
Overall Rank
The Sharpe Ratio Rank of MDIJX is 7070
Sharpe Ratio Rank
The Sortino Ratio Rank of MDIJX is 7272
Sortino Ratio Rank
The Omega Ratio Rank of MDIJX is 7373
Omega Ratio Rank
The Calmar Ratio Rank of MDIJX is 8282
Calmar Ratio Rank
The Martin Ratio Rank of MDIJX is 6868
Martin Ratio Rank
The risk-adjusted ranks indicate the investment's position relative to the market. A rank closer to 100 signifies top-performing investments, while a rank closer to 0 might suggest underperformance, based on the selected ratio. The values are calculated based on the past 12 months of returns.

MAILX vs. MDIJX - Risk-Adjusted Performance Comparison

This table presents a comparison of risk-adjusted performance metrics for BlackRock International Fund of BlackRock Series, Inc. (MAILX) and MFS International Diversification Fund (MDIJX). 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.


The current MAILX Sharpe Ratio is 0.01, which is lower than the MDIJX Sharpe Ratio of 0.74. The chart below compares the historical Sharpe Ratios of MAILX and MDIJX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.


Rolling 12-month Sharpe Ratio-0.500.000.501.001.50December2025FebruaryMarchAprilMay
0.01
0.74
MAILX
MDIJX

Dividends

MAILX vs. MDIJX - Dividend Comparison

MAILX's dividend yield for the trailing twelve months is around 0.88%, less than MDIJX's 2.27% yield.


TTM20242023202220212020201920182017201620152014
MAILX
BlackRock International Fund of BlackRock Series, Inc.
0.88%0.90%1.08%1.13%0.77%0.33%1.11%1.84%1.39%1.63%0.65%2.24%
MDIJX
MFS International Diversification Fund
2.27%2.52%2.58%0.66%1.88%0.69%1.43%2.45%1.63%2.19%1.69%1.48%

Drawdowns

MAILX vs. MDIJX - Drawdown Comparison

The maximum MAILX drawdown since its inception was -59.57%, which is greater than MDIJX's maximum drawdown of -54.94%. Use the drawdown chart below to compare losses from any high point for MAILX and MDIJX. For additional features, visit the drawdowns tool.


-25.00%-20.00%-15.00%-10.00%-5.00%0.00%December2025FebruaryMarchAprilMay
-17.49%
0
MAILX
MDIJX

Volatility

MAILX vs. MDIJX - Volatility Comparison

BlackRock International Fund of BlackRock Series, Inc. (MAILX) has a higher volatility of 4.48% compared to MFS International Diversification Fund (MDIJX) at 3.08%. This indicates that MAILX's price experiences larger fluctuations and is considered to be riskier than MDIJX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.


2.00%4.00%6.00%8.00%10.00%December2025FebruaryMarchAprilMay
4.48%
3.08%
MAILX
MDIJX