JAENX vs. VFIAX

Last updated Aug 1, 2026

JAENX (Janus Henderson Enterprise Fund Class T) and VFIAX (Vanguard 500 Index Fund Admiral Shares) are both mutual funds - JAENX is a Mid Cap Growth Equities fund actively managed by Janus Henderson, while VFIAX is a S&P 500 fund tracking the S&P 500 Index. JAENX is actively managed, while VFIAX is passively managed. Over the past 10 years, JAENX returned 12.27%/yr vs 14.96%/yr for VFIAX. Their correlation of 0.90 means they have usually moved in the same direction. JAENX charges 0.91%/yr vs 0.04%/yr for VFIAX.

Performance

JAENX vs. VFIAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Janus Henderson Enterprise Fund Class T (JAENX) and Vanguard 500 Index Fund Admiral Shares (VFIAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, JAENX achieves a 7.75% return, which is significantly lower than VFIAX's 9.33% return. Over the past 10 years, JAENX has underperformed VFIAX with an annualized return of 12.27%, while VFIAX has yielded a comparatively higher 14.96% annualized return.

JAENX

• 1D: 0.28%
• 1M: -0.94%
• 6M: 7.87%
• YTD: 7.75%
• 1Y: 12.43%
• 3Y*: 10.69%
• 5Y*: 6.43%
• 10Y*: 12.27%
• ALL TIME*: 11.16%

VFIAX

• 1D: 1.66%
• 1M: -0.56%
• 6M: 7.77%
• YTD: 9.33%
• 1Y: 20.60%
• 3Y*: 19.00%
• 5Y*: 12.65%
• 10Y*: 14.96%
• ALL TIME*: 8.81%

*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)
JAENX Janus Henderson Enterprise Fund Class T	$0.00	$0.00	$0.00
VFIAX Vanguard 500 Index Fund Admiral Shares	$0.00	$0.00	$0.00

JAENX vs. VFIAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
JAENX Janus Henderson Enterprise Fund Class T	7.75%	7.52%	15.12%	17.86%	-16.12%	16.89%	20.26%	35.07%	-1.04%	26.30%
VFIAX Vanguard 500 Index Fund Admiral Shares	9.33%	17.83%	24.97%	26.24%	-18.16%	28.65%	18.32%	31.46%	-4.45%	21.78%

Correlation

The correlation between JAENX and VFIAX is 0.76, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.76
Correlation (3Y) Balances recent behavior with more history.	0.81
Correlation (5Y) Shows whether the relationship held over a longer period.	0.87
Correlation (10Y) Provides a long-term view across more market conditions.	0.88
Correlation (All Time) Calculated using the full available price history since Nov 13, 2000	0.90

The correlation between JAENX and VFIAX shifts across timeframes, from 0.76 (1 year) to 0.90 (all time), reflecting how their relationship changes across market environments.

Return for Risk

JAENX vs. VFIAX — Risk / Return Rank

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

JAENX

JAENX Risk / Return Rank: 21
JAENX Sharpe Ratio Rank: 20
JAENX Sortino Ratio Rank: 21
JAENX Omega Ratio Rank: 20
JAENX Calmar Ratio Rank: 20
JAENX Martin Ratio Rank: 23

VFIAX

VFIAX Risk / Return Rank: 63
VFIAX Sharpe Ratio Rank: 61
VFIAX Sortino Ratio Rank: 57
VFIAX Omega Ratio Rank: 58
VFIAX Calmar Ratio Rank: 65
VFIAX Martin Ratio Rank: 76

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.

JAENX vs. VFIAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Janus Henderson Enterprise Fund Class T (JAENX) and Vanguard 500 Index Fund Admiral Shares (VFIAX). 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.

	JAENX	VFIAX	Difference
Sharpe ratio: Return per unit of total volatility	0.74	1.43	-0.69
Sortino ratio: Return per unit of downside risk	1.16	1.99	-0.84
Omega ratio: Gain probability vs. loss probability	1.13	1.26	-0.12
Calmar ratio: Return relative to maximum drawdown	0.93	2.06	-1.13
Martin ratio: Return relative to average drawdown	3.24	8.84	-5.60

JAENX vs. VFIAX - Sharpe Ratio Comparison

The current JAENX Sharpe Ratio is 0.74, which is lower than the VFIAX Sharpe Ratio of 1.43. The chart below compares the historical Sharpe Ratios of JAENX and VFIAX, 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

JAENX vs. VFIAX - Drawdown Comparison

The maximum JAENX drawdown since its inception was -79.85%, which is greater than VFIAX's maximum drawdown of -55.20%. Use the drawdown chart below to compare losses from any high point for JAENX and VFIAX.

Drawdown Indicators

	JAENX	VFIAX	Difference
Max Drawdown Largest peak-to-trough decline	-79.85%	-55.20%	-24.65%
Max Drawdown (1Y) Largest decline over 1 year	-11.42%	-8.90%	-2.52%
Max Drawdown (3Y) Largest decline over 3 years	-19.60%	-18.75%	-0.85%
Max Drawdown (5Y) Largest decline over 5 years	-24.31%	-24.53%	+0.22%
Max Drawdown (10Y) Largest decline over 10 years	-38.25%	-33.83%	-4.42%
Current Drawdown Current decline from peak	-1.35%	-2.11%	+0.76%
Average Drawdown Average peak-to-trough decline	-24.82%	-9.35%	-15.47%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.27%	2.07%	+1.20%

Volatility

JAENX vs. VFIAX - Volatility Comparison

The current volatility for Janus Henderson Enterprise Fund Class T (JAENX) is 3.04%, while Vanguard 500 Index Fund Admiral Shares (VFIAX) has a volatility of 3.44%. This indicates that JAENX experiences smaller price fluctuations and is considered to be less risky than VFIAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	JAENX	VFIAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.04%	3.44%	-0.40%
Volatility (6M) Calculated over the trailing 6-month period	11.34%	10.09%	+1.25%
Volatility (1Y) Calculated over the trailing 1-year period	14.38%	12.86%	+1.52%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.73%	17.01%	+0.72%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.69%	18.07%	+0.62%

JAENX vs. VFIAX - Expense Ratio Comparison

JAENX has a 0.91% expense ratio, which is higher than VFIAX's 0.04% expense ratio.

Dividends

JAENX vs. VFIAX - Dividend Comparison

JAENX's dividend yield for the trailing twelve months is around 6.99%, more than VFIAX's 1.07% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
JAENX Janus Henderson Enterprise Fund Class T	6.99%	7.53%	6.98%	7.62%	10.62%	15.94%	8.43%	4.41%	6.32%	1.79%	1.72%	3.93%
VFIAX Vanguard 500 Index Fund Admiral Shares	1.07%	1.12%	1.24%	1.45%	1.68%	1.24%	1.53%	1.87%	2.05%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both JAENX and VFIAX in my portfolio?

JAENX and VFIAX have a correlation of 0.76, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, JAENX or VFIAX?

VFIAX has higher volatility (3.44%) compared to JAENX (3.04%). In terms of maximum drawdown, JAENX dropped -79.85% vs VFIAX's -55.20%.

Which has better risk-adjusted returns?

VFIAX currently has the higher Sharpe Ratio (1.43 vs 0.74), 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.