MABDX vs. MAGKX

Last updated Jun 23, 2026

MABDX (Mutual of America Bond Fund) and MAGKX (Mutual of America Small Cap Growth Fund) are both mutual funds - MABDX is a Intermediate Core Bond fund managed by Mutual of America, while MAGKX is a Small Cap Growth Equities fund managed by Mutual of America. Over the past 5 years, MABDX returned -0.35%/yr vs 4.06%/yr for MAGKX. At a 0.10 correlation, their price movements are largely independent. MABDX charges 0.43%/yr vs 0.83%/yr for MAGKX.

Performance

MABDX vs. MAGKX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Mutual of America Bond Fund (MABDX) and Mutual of America Small Cap Growth Fund (MAGKX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MABDX achieves a 0.28% return, which is significantly lower than MAGKX's 22.03% return.

MABDX

• 1D: 0.24%
• 1M: 0.91%
• YTD: 0.28%
• 6M: 0.52%
• 1Y: 4.66%
• 3Y*: 3.63%
• 5Y*: -0.35%
• 10Y*: —

MAGKX

• 1D: 1.69%
• 1M: 4.94%
• YTD: 22.03%
• 6M: 18.04%
• 1Y: 38.58%
• 3Y*: 14.55%
• 5Y*: 4.06%
• 10Y*: —

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

MABDX vs. MAGKX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
MABDX Mutual of America Bond Fund	0.28%	7.58%	0.53%	4.08%	-12.96%	-2.98%	914.19%
MAGKX Mutual of America Small Cap Growth Fund	22.03%	8.45%	9.91%	15.22%	-28.37%	9.68%	1,092.52%

Correlation

The correlation between MABDX and MAGKX is 0.31, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.31
Correlation (3Y) Calculated over the trailing 3-year period	0.23
Correlation (5Y) Calculated over the trailing 5-year period	0.15
Correlation (All Time) Calculated using the full available price history since Jan 2, 2020	0.10

Over the past year, MABDX and MAGKX have become more correlated (0.31) than their long-term average of 0.10, meaning their price movements have been converging.

Return for Risk

MABDX vs. MAGKX — Risk / Return Rank

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

MABDX

MABDX Risk / Return Rank: 28
MABDX Sharpe Ratio Rank: 27
MABDX Sortino Ratio Rank: 29
MABDX Omega Ratio Rank: 25
MABDX Calmar Ratio Rank: 30
MABDX Martin Ratio Rank: 27

MAGKX

MAGKX Risk / Return Rank: 72
MAGKX Sharpe Ratio Rank: 62
MAGKX Sortino Ratio Rank: 62
MAGKX Omega Ratio Rank: 52
MAGKX Calmar Ratio Rank: 91
MAGKX Martin Ratio Rank: 91

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

MABDX vs. MAGKX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Mutual of America Bond Fund (MABDX) and Mutual of America Small Cap Growth Fund (MAGKX). 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.

	MABDX	MAGKX	Difference
Sharpe ratio: Return per unit of total volatility	1.39	2.13	-0.74
Sortino ratio: Return per unit of downside risk	2.08	3.01	-0.94
Omega ratio: Gain probability vs. loss probability	1.25	1.36	-0.12
Calmar ratio: Return relative to maximum drawdown	1.97	4.39	-2.42
Martin ratio: Return relative to average drawdown	5.95	17.04	-11.10

MABDX vs. MAGKX - Sharpe Ratio Comparison

The current MABDX Sharpe Ratio is 1.39, which is lower than the MAGKX Sharpe Ratio of 2.13. The chart below compares the historical Sharpe Ratios of MABDX and MAGKX, 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

MABDX vs. MAGKX - Drawdown Comparison

The maximum MABDX drawdown since its inception was -23.20%, smaller than the maximum MAGKX drawdown of -41.67%. Use the drawdown chart below to compare losses from any high point for MABDX and MAGKX.

Drawdown Indicators

	MABDX	MAGKX	Difference
Max Drawdown Largest peak-to-trough decline	-23.20%	-41.67%	+18.47%
Max Drawdown (1Y) Largest decline over 1 year	-2.69%	-9.81%	+7.12%
Max Drawdown (3Y) Largest decline over 3 years	-6.05%	-24.90%	+18.85%
Max Drawdown (5Y) Largest decline over 5 years	-18.51%	-41.67%	+23.16%
Current Drawdown Current decline from peak	-9.39%	0.00%	-9.39%
Average Drawdown Average peak-to-trough decline	-11.96%	-19.72%	+7.76%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.85%	2.45%	-1.60%

Volatility

MABDX vs. MAGKX - Volatility Comparison

The current volatility for Mutual of America Bond Fund (MABDX) is 1.18%, while Mutual of America Small Cap Growth Fund (MAGKX) has a volatility of 6.46%. This indicates that MABDX experiences smaller price fluctuations and is considered to be less risky than MAGKX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MABDX	MAGKX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.18%	6.46%	-5.28%
Volatility (6M) Calculated over the trailing 6-month period	2.83%	15.57%	-12.74%
Volatility (1Y) Calculated over the trailing 1-year period	3.81%	20.21%	-16.40%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.30%	27.74%	-21.44%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	374.08%	384.34%	-10.26%

MABDX vs. MAGKX - Expense Ratio Comparison

MABDX has a 0.43% expense ratio, which is lower than MAGKX's 0.83% expense ratio.

Dividends

MABDX vs. MAGKX - Dividend Comparison

MABDX's dividend yield for the trailing twelve months is around 4.11%, more than MAGKX's 0.77% yield.

Position	TTM	2025	2024	2023	2022	2021
MABDX Mutual of America Bond Fund	4.11%	4.10%	3.26%	2.42%	1.66%	1.77%
MAGKX Mutual of America Small Cap Growth Fund	0.77%	0.94%	1.62%	0.00%	5.47%	17.84%

Frequently Asked Questions

Can I hold both MABDX and MAGKX in my portfolio?

MABDX and MAGKX have a correlation of 0.31, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MABDX or MAGKX?

MAGKX has higher volatility (6.46%) compared to MABDX (1.18%). In terms of maximum drawdown, MABDX dropped -23.20% vs MAGKX's -41.67%.

Which has better risk-adjusted returns?

MAGKX currently has the higher Sharpe Ratio (2.13 vs 1.39), 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.