- ISIN
- US09248G4047
- CUSIP
- 09248G404
- Issuer
- BlackRock
- Inception Date
- Oct 30, 1998
- Category
- Foreign Large Cap Equities
- Min. Investment
- $2,000,000
- Distribution Policy
- Distributing
- Asset Class
- Equity
Share Price Chart
Loading charts...
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Performance
MAILX Performance Chart
BlackRock International Fund of BlackRock Series, Inc. (MAILX) is up 10.0% since the beginning of the year. MAILX is currently trading at $24 per share. Investors who bought $1,000 worth of MAILX shares 5 years ago would now be looking at an investment worth $1,125.
Loading charts...
Compare this symbol against anything
Returns By Period
BlackRock International Fund of BlackRock Series, Inc. (MAILX) has returned 9.99% so far this year and 23.33% over the past 12 months. Over the last ten years, MAILX has returned 7.88% per year, falling short of the S&P 500 Index benchmark, which averaged 13.26% annually.
BlackRock International Fund of BlackRock Series, Inc.
- 1D
- 2.96%
- 1M
- 0.71%
- 6M
- 4.60%
- YTD
- 9.99%
- 1Y
- 23.33%
- 3Y*
- 9.20%
- 5Y*
- 2.38%
- 10Y*
- 7.88%
- ALL TIME*
- 4.60%
Benchmark (S&P 500 Index)
- 1D
- 0.70%
- 1M
- 0.09%
- 6M
- 7.94%
- YTD
- 9.41%
- 1Y
- 20.07%
- 3Y*
- 17.84%
- 5Y*
- 11.25%
- 10Y*
- 13.26%
- ALL TIME*
- 8.09%
MAILX Monthly Returns History
Based on dividend-adjusted daily data since Oct 30, 1998, MAILX's average daily return is +0.03%, while the average monthly return is +0.50%. At this rate, an investment would double in approximately 11.6 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% | -9.42% | 7.19% | 5.00% | -0.41% | -0.40% | 9.99% | |||||
| 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 -0.63%, beta of 0.80, and R2 of 0.62 versus S&P 500 Index. Calculated based on daily prices since October 30, 1998.
- This fund participated in 102.72% of S&P 500 Index downside but only 90.96% of its upside - more exposed to losses than it benefited from rallies.
- Alpha
- -0.63%
- Beta
- 0.80
- R²
- 0.62
- Upside Capture
- 90.96%
- Downside Capture
- 102.72%
Expense Ratio
MAILX has an expense ratio of 0.65%, placing it in the medium range.
Return for Risk
Risk / Return Rank
MAILX ranks 41 for risk / return — above 41% of mutual funds peers on PortfoliosLab. Its historical combined result is near the middle of the peer group.
Risk / Return Metrics
The table below present risk-adjusted performance metrics for BlackRock International Fund of BlackRock Series, Inc. (MAILX) and compare them to S&P 500 Index.
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.
| MAILX | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.10 | ||
| Sortino ratioReturn per unit of downside risk | -0.09 | ||
| Omega ratioGain probability vs. loss probability | 1.24 | 1.25 | -0.01 |
| Calmar ratioReturn relative to maximum drawdown | 1.78 | 2.00 | -0.23 |
| Martin ratioReturn relative to average drawdown | 6.51 | 8.49 | -1.98 |
Dividends
Dividend History
BlackRock International Fund of BlackRock Series, Inc. provided a 2.29% dividend yield over the last twelve months, with an annual payout of $0.55 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $0.55 | $0.40 | $0.18 | $0.21 | $0.19 | $1.62 | $0.07 | $0.20 | $0.25 | $0.25 | $0.22 | $0.09 |
Dividend yield | 2.29% | 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 | $0.00 | $0.00 | $0.35 | $0.35 | |||||
| 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.
Loading charts...
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 2.47%.
Drawdown | Fall | Recovery | Underwater | Related event |
|---|---|---|---|---|
-59.57%Mar 2009 | 1y 4mo | 4y 6mo | 5y 10moNov 2007 - Sep 2013 | Financial crisis2007–2009 |
-53.11%Mar 2003 | 3y 2mo | 3y 23d | 6y 3moJan 2000 - Apr 2006 | — |
-41.68%Oct 2022 | 11mo 20d | 3y 2mo | 4y 2moOct 2021 - Jan 2026 | Bear market2022 |
-36.34%Mar 2020 | 2y 1mo | 5mo 8d | 2y 7moJan 2018 - Aug 2020 | COVID crash2020 |
-24.50%Feb 2016 | 1y 7mo | 1y 2mo | 2y 9moJul 2014 - Apr 2017 | — |
Drawdown Indicators
| MAILX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -59.57% | -56.78% | -2.79% |
Max Drawdown (1Y)Largest decline over 1 year | -12.34% | -9.10% | -3.24% |
Max Drawdown (3Y)Largest decline over 3 years | -17.36% | -18.90% | +1.54% |
Max Drawdown (5Y)Largest decline over 5 years | -41.68% | -25.43% | -16.25% |
Max Drawdown (10Y)Largest decline over 10 years | -41.68% | -33.92% | -7.76% |
Current DrawdownCurrent decline from peak | -2.47% | -1.58% | -0.89% |
Average DrawdownAverage peak-to-trough decline | -16.06% | -10.70% | -5.36% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.36% | 2.14% | +1.22% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
Loading charts...
Build a portfolio with MAILX
Add BlackRock International Fund of BlackRock Series, Inc. to a portfolio and analyze allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Analyzer with MAILX