ADNPX vs. SSMHX

Last updated Aug 4, 2026

ADNPX (American Beacon ARK Transformational Innovation Fund) and SSMHX (State Street Small/Mid Cap Equity Index Portfolio) are both Mid Cap Growth Equities funds. Over the past 5 years, ADNPX returned -9.13%/yr vs 5.74%/yr for SSMHX. Their correlation of 0.81 means they have usually moved in the same direction. ADNPX charges 1.39%/yr vs 0.02%/yr for SSMHX.

Performance

ADNPX vs. SSMHX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Beacon ARK Transformational Innovation Fund (ADNPX) and State Street Small/Mid Cap Equity Index Portfolio (SSMHX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ADNPX achieves a -6.40% return, which is significantly lower than SSMHX's 13.35% return.

ADNPX

• 1D: -2.43%
• 1M: -13.02%
• 6M: -3.21%
• YTD: -6.40%
• 1Y: 1.31%
• 3Y*: 13.33%
• 5Y*: -9.13%
• 10Y*: —
• ALL TIME*: 12.72%

SSMHX

• 1D: -0.48%
• 1M: -2.88%
• 6M: 9.85%
• YTD: 13.35%
• 1Y: 24.03%
• 3Y*: 14.29%
• 5Y*: 5.74%
• 10Y*: 11.50%
• ALL TIME*: 10.33%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ADNPX American Beacon ARK Transformational Innovation Fund	$0.00	$0.00	$0.00
SSMHX State Street Small/Mid Cap Equity Index Portfolio	$0.00	$0.00	$0.00

ADNPX vs. SSMHX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ADNPX American Beacon ARK Transformational Innovation Fund	-6.40%	35.66%	8.19%	67.46%	-66.37%	-22.90%	147.19%	31.93%	-3.50%	65.99%
SSMHX State Street Small/Mid Cap Equity Index Portfolio	13.35%	12.90%	10.73%	25.21%	-25.43%	13.08%	32.46%	28.00%	-9.21%	15.97%

Correlation

The correlation between ADNPX and SSMHX is 0.81, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.81
Correlation (3Y) Balances recent behavior with more history.	0.82
Correlation (5Y) Shows whether the relationship held over a longer period.	0.84
Correlation (All Time) Calculated using the full available price history since Feb 1, 2017	0.81

The correlation between ADNPX and SSMHX has been stable across timeframes, ranging from 0.81 to 0.84 - a consistent structural relationship.

Return for Risk

ADNPX vs. SSMHX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

ADNPX

ADNPX Risk / Return Rank: 3
ADNPX Sharpe Ratio Rank: 3
ADNPX Sortino Ratio Rank: 4
ADNPX Omega Ratio Rank: 4
ADNPX Calmar Ratio Rank: 3
ADNPX Martin Ratio Rank: 3

SSMHX

SSMHX Risk / Return Rank: 44
SSMHX Sharpe Ratio Rank: 37
SSMHX Sortino Ratio Rank: 38
SSMHX Omega Ratio Rank: 34
SSMHX Calmar Ratio Rank: 58
SSMHX Martin Ratio Rank: 52

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

ADNPX vs. SSMHX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Beacon ARK Transformational Innovation Fund (ADNPX) and State Street Small/Mid Cap Equity Index Portfolio (SSMHX). 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.

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.

	ADNPX	SSMHX	Difference
Sharpe ratio: Return per unit of total volatility	-0.11	1.24	-1.35
Sortino ratio: Return per unit of downside risk	0.09	1.82	-1.72
Omega ratio: Gain probability vs. loss probability	1.01	1.22	-0.21
Calmar ratio: Return relative to maximum drawdown	-0.13	2.16	-2.30
Martin ratio: Return relative to average drawdown	-0.29	7.53	-7.81

ADNPX vs. SSMHX - Sharpe Ratio Comparison

The current ADNPX Sharpe Ratio is -0.11, which is lower than the SSMHX Sharpe Ratio of 1.24. The chart below compares the historical Sharpe Ratios of ADNPX and SSMHX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

ADNPX vs. SSMHX - Drawdown Comparison

The maximum ADNPX drawdown since its inception was -79.98%, which is greater than SSMHX's maximum drawdown of -41.61%. Use the drawdown chart below to compare losses from any high point for ADNPX and SSMHX.

Drawdown Indicators

	ADNPX	SSMHX	Difference
Max Drawdown Largest peak-to-trough decline	-79.98%	-41.61%	-38.37%
Max Drawdown (1Y) Largest decline over 1 year	-30.04%	-10.03%	-20.01%
Max Drawdown (3Y) Largest decline over 3 years	-38.99%	-30.38%	-8.61%
Max Drawdown (5Y) Largest decline over 5 years	-75.82%	-34.84%	-40.98%
Max Drawdown (10Y) Largest decline over 10 years	—	-41.61%	—
Current Drawdown Current decline from peak	-51.51%	-3.86%	-47.65%
Average Drawdown Average peak-to-trough decline	-34.91%	-9.03%	-25.88%
Ulcer Index Depth and duration of drawdowns from previous peaks	14.10%	2.88%	+11.22%

Volatility

ADNPX vs. SSMHX - Volatility Comparison

American Beacon ARK Transformational Innovation Fund (ADNPX) has a higher volatility of 10.38% compared to State Street Small/Mid Cap Equity Index Portfolio (SSMHX) at 3.92%. This indicates that ADNPX's price experiences larger fluctuations and is considered to be riskier than SSMHX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ADNPX	SSMHX	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.38%	3.92%	+6.46%
Volatility (6M) Calculated over the trailing 6-month period	28.07%	13.24%	+14.83%
Volatility (1Y) Calculated over the trailing 1-year period	36.07%	17.53%	+18.54%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	45.38%	22.47%	+22.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	39.64%	22.37%	+17.27%

ADNPX vs. SSMHX - Expense Ratio Comparison

ADNPX has a 1.39% expense ratio, which is higher than SSMHX's 0.02% expense ratio.

Dividends

ADNPX vs. SSMHX - Dividend Comparison

ADNPX has not paid dividends to shareholders, while SSMHX's dividend yield for the trailing twelve months is around 6.28%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ADNPX American Beacon ARK Transformational Innovation Fund	0.00%	0.00%	0.00%	0.00%	9.67%	31.49%	0.39%	3.31%	6.56%	3.64%	0.00%	0.00%
SSMHX State Street Small/Mid Cap Equity Index Portfolio	6.28%	7.12%	0.00%	1.56%	2.31%	16.30%	2.91%	3.65%	6.43%	4.01%	1.71%	0.73%

Frequently Asked Questions

Can I hold both ADNPX and SSMHX in my portfolio?

ADNPX and SSMHX have a correlation of 0.81, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ADNPX or SSMHX?

ADNPX has higher volatility (10.38%) compared to SSMHX (3.92%). In terms of maximum drawdown, ADNPX dropped -79.98% vs SSMHX's -41.61%.

Which has better risk-adjusted returns?

SSMHX currently has the higher Sharpe Ratio (1.24 vs -0.11), 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.