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Performance
Performance Chart
The chart shows the growth of an initial investment of $10,000 in BlackRock International Fund of BlackRock Series, Inc., comparing it to the performance of the S&P 500 index or another benchmark. All prices have been adjusted for splits and dividends.
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Returns By Period
BlackRock International Fund of BlackRock Series, Inc. (MAILX) has returned -4.47% so far this year and 9.26% over the past 12 months. Over the last ten years, MAILX has returned 6.75% per year, falling short of the S&P 500 Index benchmark, which averaged 12.16% annually.
BlackRock International Fund of BlackRock Series, Inc.
- 1D
- -0.14%
- 1M
- -12.16%
- YTD
- -4.47%
- 6M
- -0.55%
- 1Y
- 9.26%
- 3Y*
- 6.50%
- 5Y*
- 0.18%
- 10Y*
- 6.75%
Benchmark (S&P 500 Index)
- 1D
- 2.91%
- 1M
- -5.09%
- YTD
- -4.63%
- 6M
- -2.39%
- 1Y
- 16.33%
- 3Y*
- 16.69%
- 5Y*
- 10.18%
- 10Y*
- 12.16%
Monthly Returns
Based on dividend-adjusted daily data since Oct 30, 1998, MAILX's average daily return is +0.02%, while the average monthly return is +0.47%. At this rate, your investment would double in approximately 12.3 years.
Historically, 58% of months were positive and 42% were negative. The best month was Nov 2022 with a return of +15.0%, while the worst month was Oct 2008 at -21.7%. The longest winning streak lasted 14 consecutive months, and the longest losing streak was 6 months.
On a daily basis, MAILX closed higher 51% of trading days. The best single day was Oct 13, 2008 with a return of +12.3%, while the worst single day was Mar 16, 2020 at -11.4%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 5.14% | 3.43% | -12.16% | -4.47% | |||||||||
| 2025 | 4.71% | 2.00% | -5.37% | 1.22% | 4.05% | 1.11% | -3.93% | 3.60% | 3.67% | 1.21% | 0.05% | 2.80% | 15.60% |
| 2024 | -2.40% | 1.46% | 4.43% | -4.19% | 4.37% | -1.33% | 1.19% | 2.09% | 0.10% | -4.96% | 2.20% | -1.98% | 0.46% |
| 2023 | 11.29% | -3.90% | 2.77% | 2.14% | -4.46% | 5.80% | 3.45% | -3.62% | -5.85% | -4.16% | 11.01% | 5.62% | 19.67% |
| 2022 | -5.02% | -5.00% | -0.90% | -8.19% | -0.50% | -11.17% | 5.23% | -7.46% | -10.71% | 6.72% | 14.96% | -2.13% | -24.24% |
| 2021 | 0.14% | 6.22% | 2.47% | 3.13% | 2.09% | -0.40% | -1.53% | 2.36% | -1.85% | 2.82% | -7.48% | 1.62% | 9.32% |
Benchmark Metrics
BlackRock International Fund of BlackRock Series, Inc. has an annualized alpha of -0.64%, beta of 0.80, and R² of 0.62 versus S&P 500 Index. Calculated based on daily prices since November 02, 1998.
- This fund participated in 102.91% of S&P 500 Index downside but only 91.52% of its upside — more exposed to losses than it benefited from rallies.
- Alpha
- -0.64%
- Beta
- 0.80
- R²
- 0.62
- Upside Capture
- 91.52%
- Downside Capture
- 102.91%
Expense Ratio
MAILX has an expense ratio of 0.65%, placing it in the medium range.
Return for Risk
Risk / Return Rank
MAILX ranks 18 for risk / return — in the bottom 18% of mutual funds on our site. This means you're taking on significantly more risk than the returns justify. Consider whether the potential upside is worth the volatility, or explore alternatives with better risk / return profiles.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for BlackRock International Fund of BlackRock Series, Inc. (MAILX) and compare them to a chosen benchmark (S&P 500 Index).
| MAILX | Benchmark | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.51 | 0.90 | -0.39 |
Sortino ratioReturn per unit of downside risk | 0.78 | 1.39 | -0.60 |
Omega ratioGain probability vs. loss probability | 1.11 | 1.21 | -0.10 |
Calmar ratioReturn relative to maximum drawdown | 0.57 | 1.40 | -0.83 |
Martin ratioReturn relative to average drawdown | 2.14 | 6.61 | -4.46 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Explore MAILX risk-adjusted metrics in detail
Dive deeper into individual metrics with historical trends, benchmark comparisons, and performance across different time periods.
Dividends
Dividend History
BlackRock International Fund of BlackRock Series, Inc. provided a 1.88% dividend yield over the last twelve months, with an annual payout of $0.40 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $0.40 | $0.40 | $0.18 | $0.21 | $0.19 | $1.62 | $0.07 | $0.20 | $0.25 | $0.25 | $0.22 | $0.09 |
Dividend yield | 1.88% | 1.79% | 0.90% | 1.08% | 1.13% | 7.30% | 0.33% | 1.11% | 1.83% | 1.39% | 1.62% | 0.65% |
Monthly Dividends
The table displays the monthly dividend distributions for BlackRock International Fund of BlackRock Series, Inc.. The dividends shown in the table have been adjusted to account for any splits that may have occurred.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | $0.00 | $0.00 | $0.00 | $0.00 | |||||||||
| 2025 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.20 | $0.00 | $0.00 | $0.00 | $0.00 | $0.20 | $0.40 |
| 2024 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.12 | $0.00 | $0.00 | $0.00 | $0.00 | $0.06 | $0.18 |
| 2023 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.12 | $0.00 | $0.00 | $0.00 | $0.00 | $0.09 | $0.21 |
| 2022 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.14 | $0.00 | $0.00 | $0.00 | $0.00 | $0.05 | $0.19 |
| 2021 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $1.13 | $0.00 | $0.00 | $0.00 | $0.00 | $0.49 | $1.62 |
Drawdowns
Drawdowns Chart
The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.
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Worst Drawdowns
The table below displays the maximum drawdowns of the BlackRock International Fund of BlackRock Series, Inc.. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.
The maximum drawdown for the BlackRock International Fund of BlackRock Series, Inc. was 59.57%, occurring on Mar 9, 2009. Recovery took 1141 trading sessions.
The current BlackRock International Fund of BlackRock Series, Inc. drawdown is 12.34%.
Depth | Start | To Bottom | Bottom | To Recover | End | Total |
|---|---|---|---|---|---|---|
| -59.57% | Nov 1, 2007 | 339 | Mar 9, 2009 | 1141 | Sep 18, 2013 | 1480 |
| -53.11% | Jan 4, 2000 | 799 | Mar 12, 2003 | 771 | Apr 3, 2006 | 1570 |
| -41.68% | Oct 27, 2021 | 242 | Oct 12, 2022 | 810 | Jan 6, 2026 | 1052 |
| -36.34% | Jan 30, 2018 | 540 | Mar 23, 2020 | 111 | Aug 28, 2020 | 651 |
| -24.5% | Jul 7, 2014 | 405 | Feb 11, 2016 | 302 | Apr 25, 2017 | 707 |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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