AHITX vs. MGK

Last updated Jun 5, 2026

AHITX (American Funds American High-Income Trust) and MGK (Vanguard Mega Cap Growth ETF) are both funds - AHITX is a High Yield Bonds fund managed by American Funds, while MGK is a Large Cap Growth Equities fund tracking the CRSP US Mega Cap Growth Index. Over the past 10 years, AHITX returned 5.89%/yr vs 19.22%/yr for MGK. At a 0.39 correlation, their price movements are largely independent. AHITX charges 0.69%/yr vs 0.05%/yr for MGK.

Performance

AHITX vs. MGK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds American High-Income Trust (AHITX) and Vanguard Mega Cap Growth ETF (MGK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AHITX achieves a 1.88% return, which is significantly lower than MGK's 10.16% return. Over the past 10 years, AHITX has underperformed MGK with an annualized return of 5.89%, while MGK has yielded a comparatively higher 19.22% annualized return.

AHITX

• 1D: -0.30%
• 1M: 0.30%
• YTD: 1.88%
• 6M: 2.43%
• 1Y: 8.02%
• 3Y*: 9.19%
• 5Y*: 4.38%
• 10Y*: 5.89%

MGK

• 1D: 0.13%
• 1M: 6.68%
• YTD: 10.16%
• 6M: 9.47%
• 1Y: 29.81%
• 3Y*: 26.86%
• 5Y*: 16.28%
• 10Y*: 19.22%

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

AHITX vs. MGK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AHITX American Funds American High-Income Trust	1.88%	8.28%	9.45%	11.43%	-10.38%	8.32%	7.01%	11.86%	-1.80%	7.30%
MGK Vanguard Mega Cap Growth ETF	10.16%	20.67%	32.94%	51.67%	-33.59%	28.58%	41.01%	37.38%	-2.91%	29.49%

Correlation

The correlation between AHITX and MGK is 0.53, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.53
Correlation (3Y) Calculated over the trailing 3-year period	0.43
Correlation (5Y) Calculated over the trailing 5-year period	0.47
Correlation (10Y) Calculated over the trailing 10-year period	0.44
Correlation (All Time) Calculated using the full available price history since Dec 28, 2007	0.39

The correlation between AHITX and MGK shifts across timeframes, from 0.39 (all time) to 0.53 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

AHITX vs. MGK — Risk / Return Rank

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

AHITX

AHITX Risk / Return Rank: 78
AHITX Sharpe Ratio Rank: 67
AHITX Sortino Ratio Rank: 86
AHITX Omega Ratio Rank: 80
AHITX Calmar Ratio Rank: 75
AHITX Martin Ratio Rank: 82

MGK

MGK Risk / Return Rank: 47
MGK Sharpe Ratio Rank: 55
MGK Sortino Ratio Rank: 52
MGK Omega Ratio Rank: 52
MGK Calmar Ratio Rank: 37
MGK Martin Ratio Rank: 40

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.

AHITX vs. MGK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds American High-Income Trust (AHITX) and Vanguard Mega Cap Growth ETF (MGK). 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.

	AHITX	MGK	Difference
Sharpe ratio: Return per unit of total volatility	2.40	1.85	+0.55
Sortino ratio: Return per unit of downside risk	4.15	2.51	+1.63
Omega ratio: Gain probability vs. loss probability	1.53	1.32	+0.22
Calmar ratio: Return relative to maximum drawdown	3.39	1.78	+1.61
Martin ratio: Return relative to average drawdown	15.23	6.11	+9.12
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AHITX vs. MGK - Sharpe Ratio Comparison

The current AHITX Sharpe Ratio is 2.40, which is comparable to the MGK Sharpe Ratio of 1.85. The chart below compares the historical Sharpe Ratios of AHITX and MGK, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	AHITX	MGK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.40	1.85	+0.55
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.88	0.72	+0.16
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.08	0.88	+0.20
Sharpe Ratio (All Time) Calculated using the full available price history	1.43	0.66	+0.78

Drawdowns

AHITX vs. MGK - Drawdown Comparison

The maximum AHITX drawdown since its inception was -34.81%, smaller than the maximum MGK drawdown of -47.97%. Use the drawdown chart below to compare losses from any high point for AHITX and MGK.

Drawdown Indicators

	AHITX	MGK	Difference
Max Drawdown Largest peak-to-trough decline	-34.81%	-47.97%	+13.16%
Max Drawdown (1Y) Largest decline over 1 year	-2.41%	-16.85%	+14.44%
Max Drawdown (3Y) Largest decline over 3 years	-3.96%	-23.36%	+19.40%
Max Drawdown (5Y) Largest decline over 5 years	-13.93%	-36.01%	+22.08%
Max Drawdown (10Y) Largest decline over 10 years	-21.22%	-36.01%	+14.79%
Current Drawdown Current decline from peak	-0.30%	-1.30%	+1.00%
Average Drawdown Average peak-to-trough decline	-2.67%	-7.47%	+4.80%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.54%	4.89%	-4.35%

Volatility

AHITX vs. MGK - Volatility Comparison

The current volatility for American Funds American High-Income Trust (AHITX) is 1.18%, while Vanguard Mega Cap Growth ETF (MGK) has a volatility of 4.00%. This indicates that AHITX experiences smaller price fluctuations and is considered to be less risky than MGK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AHITX	MGK	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.18%	4.00%	-2.82%
Volatility (6M) Calculated over the trailing 6-month period	2.63%	12.36%	-9.73%
Volatility (1Y) Calculated over the trailing 1-year period	3.41%	16.22%	-12.81%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.98%	22.62%	-17.64%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.48%	21.88%	-16.40%

AHITX vs. MGK - Expense Ratio Comparison

AHITX has a 0.69% expense ratio, which is higher than MGK's 0.05% expense ratio.

Dividends

AHITX vs. MGK - Dividend Comparison

AHITX's dividend yield for the trailing twelve months is around 6.29%, more than MGK's 0.32% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AHITX American Funds American High-Income Trust	6.29%	6.26%	6.25%	5.87%	4.17%	4.27%	5.81%	6.19%	6.31%	5.99%	5.05%	6.92%
MGK Vanguard Mega Cap Growth ETF	0.32%	0.35%	0.43%	0.50%	0.70%	0.41%	0.65%	0.85%	1.12%	1.23%	1.53%	1.43%

Frequently Asked Questions

Can I hold both AHITX and MGK in my portfolio?

AHITX and MGK have a correlation of 0.53, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AHITX or MGK?

MGK has higher volatility (4.00%) compared to AHITX (1.18%). In terms of maximum drawdown, AHITX dropped -34.81% vs MGK's -47.97%.

Which has better risk-adjusted returns?

AHITX currently has the higher Sharpe Ratio (2.40 vs 1.85), 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.