- ISIN
- US0245241916
- CUSIP
- 024524191
- Issuer
- American Beacon
- Inception Date
- Feb 1, 2006
- Category
- Mid Cap Growth Equities
- Min. Investment
- $2,500
- Distribution Policy
- Distributing
- Asset Class
- Equity
- Asset Class Size
- Mid-Cap
- Asset Class Style
- Growth
Share Price Chart
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Performance
STMGX Performance Chart
American Beacon Stephens Mid-Cap Growth Fund (STMGX) is up 11.7% since the beginning of the year. STMGX is currently trading at $29 per share. Investors who bought $1,000 worth of STMGX shares 5 years ago would now be looking at an investment worth $1,425.
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Returns By Period
American Beacon Stephens Mid-Cap Growth Fund (STMGX) has returned 11.65% so far this year and 21.54% over the past 12 months. Over the last decade, STMGX has posted an annualized return of 13.85%, slightly higher than the S&P 500 Index benchmark’s 13.66%.
American Beacon Stephens Mid-Cap Growth Fund
- 1D
- 0.71%
- 1M
- 8.63%
- YTD
- 11.65%
- 6M
- 10.19%
- 1Y
- 21.54%
- 3Y*
- 17.25%
- 5Y*
- 7.34%
- 10Y*
- 13.85%
Benchmark (S&P 500 Index)
- 1D
- -0.74%
- 1M
- 4.90%
- YTD
- 10.35%
- 6M
- 10.28%
- 1Y
- 26.52%
- 3Y*
- 20.83%
- 5Y*
- 12.30%
- 10Y*
- 13.66%
STMGX Monthly Returns History
Based on dividend-adjusted daily data since Feb 2, 2006, STMGX's average daily return is +0.05%, while the average monthly return is +0.92%. At this rate, an investment would double in approximately 6.3 years.
Historically, 62% of months were positive and 38% were negative. The best month was Apr 2020 with a return of +16.1%, while the worst month was Oct 2008 at -22.0%. The longest winning streak lasted 8 consecutive months, and the longest losing streak was 5 months.
On a daily basis, STMGX closed higher 54% of trading days. The best single day was Oct 13, 2008 with a return of +12.0%, while the worst single day was Mar 16, 2020 at -12.5%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0.59% | 1.83% | -5.80% | 6.73% | 6.30% | 2.00% | 11.65% | ||||||
| 2025 | 4.64% | -4.84% | -6.25% | 1.73% | 7.66% | 7.15% | 1.65% | 0.77% | 1.82% | 0.26% | -0.80% | -0.57% | 12.98% |
| 2024 | -0.46% | 7.14% | 2.23% | -6.00% | 2.08% | 0.20% | 0.07% | 2.17% | 1.62% | -0.95% | 11.20% | -5.67% | 13.16% |
| 2023 | 8.72% | -2.54% | 4.16% | -1.93% | 0.45% | 6.87% | 2.45% | -2.95% | -4.47% | -3.06% | 10.06% | 6.35% | 25.22% |
| 2022 | -12.15% | -1.23% | 0.75% | -10.48% | -3.82% | -8.11% | 11.86% | -5.10% | -9.03% | 8.18% | 5.00% | -5.49% | -28.31% |
| 2021 | -2.03% | 2.59% | -1.57% | 5.17% | -1.45% | 4.17% | 3.28% | 0.70% | -3.97% | 6.84% | -4.46% | 3.11% | 12.29% |
Benchmark Metrics
American Beacon Stephens Mid-Cap Growth Fund has an annualized alpha of 0.80%, beta of 1.03, and R2 of 0.86 versus S&P 500 Index. Calculated based on daily prices since February 03, 2006.
- With beta of 1.03 and R2 of 0.86, this fund moves broadly in line with S&P 500 Index - much of its variation is explained by market exposure rather than independent behavior.
- Alpha
- 0.80%
- Beta
- 1.03
- R²
- 0.86
- Upside Capture
- 104.91%
- Downside Capture
- 101.60%
Expense Ratio
STMGX has a high expense ratio of 1.14%, indicating above-average management fees.
Return for Risk
Risk / Return Rank
STMGX ranks 26 for risk / return — below 26% of mutual funds on our site. The returns aren't fully compensating for the risk involved. This isn't necessarily a dealbreaker, but factor it into your decision — especially if you're risk-averse.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for American Beacon Stephens Mid-Cap Growth Fund (STMGX) and compare them to S&P 500 Index.
| STMGX | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.83 | ||
| Sortino ratioReturn per unit of downside risk | -1.06 | ||
| Omega ratioGain probability vs. loss probability | 1.24 | 1.41 | -0.17 |
| Calmar ratioReturn relative to maximum drawdown | 2.11 | 2.93 | -0.82 |
| Martin ratioReturn relative to average drawdown | 7.45 | 13.52 | -6.08 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Dividends
Dividend History
American Beacon Stephens Mid-Cap Growth Fund provided a 30.79% dividend yield over the last twelve months, with an annual payout of $8.79 per share.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $8.79 | $8.79 | $1.48 | $0.00 | $0.77 | $2.43 | $0.45 | $0.81 | $1.67 | $1.03 | $1.05 | $0.89 |
Dividend yield | 30.79% | 34.38% | 4.86% | 0.00% | 3.42% | 7.49% | 1.45% | 3.60% | 9.39% | 5.40% | 6.65% | 5.62% |
Monthly Dividends
The table displays the monthly dividend distributions for American Beacon Stephens Mid-Cap Growth Fund. 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 | $0.00 | ||||||
| 2025 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $8.79 | $8.79 |
| 2024 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $1.48 | $1.48 |
| 2023 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 |
| 2022 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.77 | $0.77 |
| 2021 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $2.43 | $2.43 |
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 American Beacon Stephens Mid-Cap Growth Fund. 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 American Beacon Stephens Mid-Cap Growth Fund was 57.58%, occurring on Nov 20, 2008. Recovery took 565 trading sessions.
Related event | Drawdown | Fall | Recovery | Underwater |
|---|---|---|---|---|
Financial crisis2007–2009 | -57.58%Nov 2008 | 1y 20d | 2y 3mo | 3y 3moNov 2007 - Feb 2011 |
Bear market2022 | -36.59%Oct 2022 | 11mo 1d | 2y 26d | 2y 11moNov 2021 - Nov 2024 |
COVID crash2020 | -33.77%Mar 2020 | 1mo 2d | 2mo 11d | 3mo 13dFeb 2020 - Jun 2020 |
2016 bear market2016 | -26.08%Feb 2016 | 7mo 19d | 11mo 22d | 1y 7moJun 2015 - Jan 2017 |
Rate-hike selloffLate 2018 | -23.91%Dec 2018 | 3mo 20d | 4mo | 7mo 20dSep 2018 - Apr 2019 |
Drawdown Indicators
| STMGX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -57.58% | -56.78% | -0.80% |
Max Drawdown (1Y)Largest decline over 1 year | -10.84% | -9.10% | -1.74% |
Max Drawdown (3Y)Largest decline over 3 years | -22.50% | -18.90% | -3.60% |
Max Drawdown (5Y)Largest decline over 5 years | -36.59% | -25.43% | -11.16% |
Max Drawdown (10Y)Largest decline over 10 years | -36.59% | -33.92% | -2.67% |
Current DrawdownCurrent decline from peak | 0.00% | -0.74% | +0.74% |
Average DrawdownAverage peak-to-trough decline | -10.16% | -10.72% | +0.56% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.07% | 1.97% | +1.10% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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