JFNAX vs. VFIAX

Last updated Aug 5, 2026

JFNAX (Janus Henderson Global Life Sciences Fund Class A) and VFIAX (Vanguard 500 Index Fund Admiral Shares) are both mutual funds - JFNAX is a Health & Biotech Equities fund managed by Janus Henderson, while VFIAX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, JFNAX returned 10.90%/yr vs 15.14%/yr for VFIAX. Their 0.72 correlation means they have sometimes moved together and sometimes differently. JFNAX charges 0.98%/yr vs 0.04%/yr for VFIAX.

Performance

JFNAX vs. VFIAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Janus Henderson Global Life Sciences Fund Class A (JFNAX) 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, JFNAX achieves a 7.42% return, which is significantly lower than VFIAX's 11.74% return. Over the past 10 years, JFNAX has underperformed VFIAX with an annualized return of 10.90%, while VFIAX has yielded a comparatively higher 15.14% annualized return.

JFNAX

• 1D: -0.56%
• 1M: -3.51%
• 6M: 6.34%
• YTD: 7.42%
• 1Y: 36.72%
• 3Y*: 13.35%
• 5Y*: 7.97%
• 10Y*: 10.90%
• ALL TIME*: 15.01%

VFIAX

• 1D: 1.49%
• 1M: 1.63%
• 6M: 10.48%
• YTD: 11.74%
• 1Y: 21.46%
• 3Y*: 20.84%
• 5Y*: 13.10%
• 10Y*: 15.14%
• ALL TIME*: 8.90%

*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)
JFNAX Janus Henderson Global Life Sciences Fund Class A	$0.00	$0.00	$0.00
VFIAX Vanguard 500 Index Fund Admiral Shares	$0.00	$0.00	$0.00

JFNAX vs. VFIAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
JFNAX Janus Henderson Global Life Sciences Fund Class A	7.42%	24.61%	3.41%	7.35%	-2.86%	6.59%	25.42%	28.98%	4.00%	22.35%
VFIAX Vanguard 500 Index Fund Admiral Shares	11.74%	17.83%	24.97%	26.24%	-18.16%	28.65%	18.32%	31.46%	-4.45%	21.78%

Correlation

The correlation between JFNAX and VFIAX is 0.33, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.33
Correlation (3Y) Balances recent behavior with more history.	0.50
Correlation (5Y) Shows whether the relationship held over a longer period.	0.61
Correlation (10Y) Provides a long-term view across more market conditions.	0.67
Correlation (All Time) Calculated using the full available price history since Jul 6, 2009	0.72

Over the past year, the correlation between JFNAX and VFIAX has dropped to 0.33 - well below their long-term average of 0.72, suggesting their price drivers have been diverging.

Return for Risk

JFNAX vs. VFIAX — Risk / Return Rank

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

JFNAX

JFNAX Risk / Return Rank: 90
JFNAX Sharpe Ratio Rank: 93
JFNAX Sortino Ratio Rank: 92
JFNAX Omega Ratio Rank: 85
JFNAX Calmar Ratio Rank: 92
JFNAX Martin Ratio Rank: 87

VFIAX

VFIAX Risk / Return Rank: 75
VFIAX Sharpe Ratio Rank: 75
VFIAX Sortino Ratio Rank: 70
VFIAX Omega Ratio Rank: 70
VFIAX Calmar Ratio Rank: 77
VFIAX Martin Ratio Rank: 85

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.

JFNAX vs. VFIAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Janus Henderson Global Life Sciences Fund Class A (JFNAX) 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.

	JFNAX	VFIAX	Difference
Sharpe ratio: Return per unit of total volatility	2.45	1.82	+0.63
Sortino ratio: Return per unit of downside risk	3.55	2.51	+1.04
Omega ratio: Gain probability vs. loss probability	1.42	1.33	+0.09
Calmar ratio: Return relative to maximum drawdown	3.96	2.62	+1.34
Martin ratio: Return relative to average drawdown	12.28	11.27	+1.01

JFNAX vs. VFIAX - Sharpe Ratio Comparison

The current JFNAX Sharpe Ratio is 2.45, which is higher than the VFIAX Sharpe Ratio of 1.82. The chart below compares the historical Sharpe Ratios of JFNAX 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

JFNAX vs. VFIAX - Drawdown Comparison

The maximum JFNAX drawdown since its inception was -31.07%, smaller than the maximum VFIAX drawdown of -55.20%. Use the drawdown chart below to compare losses from any high point for JFNAX and VFIAX.

Drawdown Indicators

	JFNAX	VFIAX	Difference
Max Drawdown Largest peak-to-trough decline	-31.07%	-55.20%	+24.13%
Max Drawdown (1Y) Largest decline over 1 year	-9.71%	-8.90%	-0.81%
Max Drawdown (3Y) Largest decline over 3 years	-21.28%	-18.75%	-2.53%
Max Drawdown (5Y) Largest decline over 5 years	-22.29%	-24.53%	+2.24%
Max Drawdown (10Y) Largest decline over 10 years	-27.39%	-33.83%	+6.44%
Current Drawdown Current decline from peak	-4.29%	0.00%	-4.29%
Average Drawdown Average peak-to-trough decline	-6.25%	-9.35%	+3.10%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.13%	2.07%	+1.06%

Volatility

JFNAX vs. VFIAX - Volatility Comparison

Janus Henderson Global Life Sciences Fund Class A (JFNAX) has a higher volatility of 4.55% compared to Vanguard 500 Index Fund Admiral Shares (VFIAX) at 3.81%. This indicates that JFNAX's price experiences larger fluctuations and is considered to be riskier than VFIAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	JFNAX	VFIAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.55%	3.81%	+0.74%
Volatility (6M) Calculated over the trailing 6-month period	12.36%	10.20%	+2.16%
Volatility (1Y) Calculated over the trailing 1-year period	15.75%	12.86%	+2.89%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.12%	17.03%	-0.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.38%	18.08%	-0.70%

JFNAX vs. VFIAX - Expense Ratio Comparison

JFNAX has a 0.98% expense ratio, which is higher than VFIAX's 0.04% expense ratio.

Dividends

JFNAX vs. VFIAX - Dividend Comparison

JFNAX's dividend yield for the trailing twelve months is around 4.24%, more than VFIAX's 1.05% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
JFNAX Janus Henderson Global Life Sciences Fund Class A	4.24%	4.56%	5.74%	4.28%	0.08%	9.90%	7.82%	6.18%	13.55%	1.03%	0.97%	8.93%
VFIAX Vanguard 500 Index Fund Admiral Shares	1.05%	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 JFNAX and VFIAX in my portfolio?

JFNAX and VFIAX have a correlation of 0.33, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, JFNAX or VFIAX?

JFNAX has higher volatility (4.55%) compared to VFIAX (3.81%). In terms of maximum drawdown, JFNAX dropped -31.07% vs VFIAX's -55.20%.

Which has better risk-adjusted returns?

JFNAX currently has the higher Sharpe Ratio (2.45 vs 1.82), 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.