OLGAX vs. VMGAX

Last updated Aug 4, 2026

OLGAX (JPMorgan Large Cap Growth Fund Class A) and VMGAX (Vanguard Mega Cap Growth Index Fund Institutional Shares) are both Large Cap Growth Equities funds. OLGAX is actively managed, while VMGAX is passively managed. Over the past 10 years, OLGAX returned 18.28%/yr vs 18.27%/yr for VMGAX. Their 0.95 correlation means they have historically moved very closely together. OLGAX charges 0.94%/yr vs 0.05%/yr for VMGAX.

Performance

OLGAX vs. VMGAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in JPMorgan Large Cap Growth Fund Class A (OLGAX) and Vanguard Mega Cap Growth Index Fund Institutional Shares (VMGAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OLGAX achieves a -1.37% return, which is significantly lower than VMGAX's 4.77% return. Both investments have delivered pretty close results over the past 10 years, with OLGAX having a 18.28% annualized return and VMGAX not far behind at 18.27%.

OLGAX

• 1D: 0.70%
• 1M: -3.79%
• 6M: -0.60%
• YTD: -1.37%
• 1Y: 5.05%
• 3Y*: 16.99%
• 5Y*: 9.71%
• 10Y*: 18.28%
• ALL TIME*: 10.06%

VMGAX

• 1D: 1.14%
• 1M: -0.93%
• 6M: 6.38%
• YTD: 4.77%
• 1Y: 16.42%
• 3Y*: 21.81%
• 5Y*: 13.07%
• 10Y*: 18.27%
• ALL TIME*: 13.45%

*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)
OLGAX JPMorgan Large Cap Growth Fund Class A	$0.00	$0.00	$0.00
VMGAX Vanguard Mega Cap Growth Index Fund Institutional Shares	$0.00	$0.00	$0.00

OLGAX vs. VMGAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OLGAX JPMorgan Large Cap Growth Fund Class A	-1.37%	13.79%	34.85%	34.28%	-25.58%	17.87%	55.60%	38.81%	0.23%	37.75%
VMGAX Vanguard Mega Cap Growth Index Fund Institutional Shares	4.77%	20.73%	32.98%	51.57%	-33.55%	28.50%	41.02%	37.54%	-2.86%	29.49%

Correlation

The correlation between OLGAX and VMGAX is 0.92, 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.	0.92
Correlation (3Y) Balances recent behavior with more history.	0.95
Correlation (5Y) Shows whether the relationship held over a longer period.	0.96
Correlation (10Y) Provides a long-term view across more market conditions.	0.95
Correlation (All Time) Calculated using the full available price history since Dec 27, 2007	0.95

The correlation between OLGAX and VMGAX has been stable across timeframes, ranging from 0.92 to 0.96 - a consistent structural relationship.

Return for Risk

OLGAX vs. VMGAX — Risk / Return Rank

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

OLGAX

OLGAX Risk / Return Rank: 6
OLGAX Sharpe Ratio Rank: 6
OLGAX Sortino Ratio Rank: 6
OLGAX Omega Ratio Rank: 6
OLGAX Calmar Ratio Rank: 6
OLGAX Martin Ratio Rank: 6

VMGAX

VMGAX Risk / Return Rank: 18
VMGAX Sharpe Ratio Rank: 19
VMGAX Sortino Ratio Rank: 19
VMGAX Omega Ratio Rank: 18
VMGAX Calmar Ratio Rank: 15
VMGAX Martin Ratio Rank: 17

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.

OLGAX vs. VMGAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for JPMorgan Large Cap Growth Fund Class A (OLGAX) and Vanguard Mega Cap Growth Index Fund Institutional Shares (VMGAX). 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.

	OLGAX	VMGAX	Difference
Sharpe ratio: Return per unit of total volatility	0.15	0.76	-0.61
Sortino ratio: Return per unit of downside risk	0.34	1.16	-0.81
Omega ratio: Gain probability vs. loss probability	1.04	1.14	-0.10
Calmar ratio: Return relative to maximum drawdown	0.17	0.83	-0.66
Martin ratio: Return relative to average drawdown	0.46	2.60	-2.14

OLGAX vs. VMGAX - Sharpe Ratio Comparison

The current OLGAX Sharpe Ratio is 0.15, which is lower than the VMGAX Sharpe Ratio of 0.76. The chart below compares the historical Sharpe Ratios of OLGAX and VMGAX, 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

OLGAX vs. VMGAX - Drawdown Comparison

The maximum OLGAX drawdown since its inception was -63.25%, which is greater than VMGAX's maximum drawdown of -47.97%. Use the drawdown chart below to compare losses from any high point for OLGAX and VMGAX.

Drawdown Indicators

	OLGAX	VMGAX	Difference
Max Drawdown Largest peak-to-trough decline	-63.25%	-47.97%	-15.28%
Max Drawdown (1Y) Largest decline over 1 year	-16.92%	-16.78%	-0.14%
Max Drawdown (3Y) Largest decline over 3 years	-21.55%	-23.45%	+1.90%
Max Drawdown (5Y) Largest decline over 5 years	-31.34%	-36.03%	+4.69%
Max Drawdown (10Y) Largest decline over 10 years	-31.87%	-36.03%	+4.16%
Current Drawdown Current decline from peak	-8.46%	-6.12%	-2.34%
Average Drawdown Average peak-to-trough decline	-18.63%	-7.42%	-11.21%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.32%	5.35%	+0.97%

Volatility

OLGAX vs. VMGAX - Volatility Comparison

JPMorgan Large Cap Growth Fund Class A (OLGAX) has a higher volatility of 8.13% compared to Vanguard Mega Cap Growth Index Fund Institutional Shares (VMGAX) at 5.83%. This indicates that OLGAX's price experiences larger fluctuations and is considered to be riskier than VMGAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OLGAX	VMGAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.13%	5.83%	+2.30%
Volatility (6M) Calculated over the trailing 6-month period	15.28%	14.69%	+0.59%
Volatility (1Y) Calculated over the trailing 1-year period	19.00%	18.26%	+0.74%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.74%	23.00%	-2.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.81%	22.02%	-0.21%

OLGAX vs. VMGAX - Expense Ratio Comparison

OLGAX has a 0.94% expense ratio, which is higher than VMGAX's 0.05% expense ratio.

Dividends

OLGAX vs. VMGAX - Dividend Comparison

OLGAX's dividend yield for the trailing twelve months is around 11.98%, more than VMGAX's 0.35% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
OLGAX JPMorgan Large Cap Growth Fund Class A	11.98%	11.82%	2.06%	0.00%	3.20%	15.30%	5.32%	13.03%	16.18%	14.92%	9.94%	4.51%
VMGAX Vanguard Mega Cap Growth Index Fund Institutional Shares	0.35%	0.36%	0.44%	0.51%	0.71%	0.42%	0.65%	0.86%	1.13%	1.23%	1.53%	1.44%

Frequently Asked Questions

Can I hold both OLGAX and VMGAX in my portfolio?

With a correlation of 0.92, OLGAX and VMGAX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, OLGAX or VMGAX?

OLGAX has higher volatility (8.13%) compared to VMGAX (5.83%). In terms of maximum drawdown, OLGAX dropped -63.25% vs VMGAX's -47.97%.

Which has better risk-adjusted returns?

VMGAX currently has the higher Sharpe Ratio (0.76 vs 0.15), 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.