ENTA vs. IBB

Last updated Apr 1, 2026

Compare and contrast key facts about Enanta Pharmaceuticals, Inc. (ENTA) and iShares Nasdaq Biotechnology ETF (IBB).

IBB is a passively managed fund by iShares that tracks the performance of the NASDAQ Biotechnology Index. It was launched on Feb 5, 2001.

Performance

ENTA vs. IBB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Enanta Pharmaceuticals, Inc. (ENTA) and iShares Nasdaq Biotechnology ETF (IBB). The values are adjusted to include any dividend payments, if applicable.

ENTA vs. IBB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ENTA Enanta Pharmaceuticals, Inc.	-19.91%	174.26%	-38.89%	-79.77%	-37.79%	77.62%	-31.85%	-12.78%	20.71%	75.16%
IBB iShares Nasdaq Biotechnology ETF	0.12%	27.98%	-2.41%	3.76%	-13.69%	0.95%	26.01%	25.42%	-9.53%	21.08%

Returns By Period

In the year-to-date period, ENTA achieves a -19.91% return, which is significantly lower than IBB's 0.12% return. Over the past 10 years, ENTA has underperformed IBB with an annualized return of -8.19%, while IBB has yielded a comparatively higher 6.84% annualized return.

ENTA

• 1D: 3.69%
• 1M: -11.68%
• YTD: -19.91%
• 6M: 5.51%
• 1Y: 128.80%
• 3Y*: -32.15%
• 5Y*: -24.30%
• 10Y*: -8.19%

IBB

• 1D: 4.32%
• 1M: -3.65%
• YTD: 0.12%
• 6M: 17.17%
• 1Y: 32.33%
• 3Y*: 9.65%
• 5Y*: 2.46%
• 10Y*: 6.84%

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

Return for Risk

ENTA vs. IBB — Risk / Return Rank

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

ENTA

ENTA Risk / Return Rank: 86
ENTA Sharpe Ratio Rank: 78
ENTA Sortino Ratio Rank: 90
ENTA Omega Ratio Rank: 87
ENTA Calmar Ratio Rank: 90
ENTA Martin Ratio Rank: 84

IBB

IBB Risk / Return Rank: 78
IBB Sharpe Ratio Rank: 77
IBB Sortino Ratio Rank: 78
IBB Omega Ratio Rank: 70
IBB Calmar Ratio Rank: 85
IBB Martin Ratio Rank: 82

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.

ENTA vs. IBB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Enanta Pharmaceuticals, Inc. (ENTA) and iShares Nasdaq Biotechnology ETF (IBB). 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.

	ENTA	IBB	Difference
Sharpe ratio Return per unit of total volatility	1.15	1.35	-0.20
Sortino ratio Return per unit of downside risk	2.83	1.91	+0.91
Omega ratio Gain probability vs. loss probability	1.36	1.25	+0.12
Calmar ratio Return relative to maximum drawdown	3.80	2.41	+1.40
Martin ratio Return relative to average drawdown	7.55	8.61	-1.06
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ENTA vs. IBB - Sharpe Ratio Comparison

The current ENTA Sharpe Ratio is 1.15, which is comparable to the IBB Sharpe Ratio of 1.35. The chart below compares the historical Sharpe Ratios of ENTA and IBB, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	ENTA	IBB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.15	1.35	-0.20
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.33	0.11	-0.45
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.14	0.29	-0.43
Sharpe Ratio (All Time) Calculated using the full available price history	-0.04	0.26	-0.30

Correlation

The correlation between ENTA and IBB is 0.47, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

ENTA vs. IBB - Dividend Comparison

ENTA has not paid dividends to shareholders, while IBB's dividend yield for the trailing twelve months is around 0.23%.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ENTA Enanta Pharmaceuticals, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
IBB iShares Nasdaq Biotechnology ETF	0.23%	0.23%	0.29%	0.26%	0.31%	0.21%	0.21%	0.33%	0.20%	0.30%	0.19%	0.03%

Drawdowns

ENTA vs. IBB - Drawdown Comparison

The maximum ENTA drawdown since its inception was -96.63%, which is greater than IBB's maximum drawdown of -62.85%. Use the drawdown chart below to compare losses from any high point for ENTA and IBB.

Drawdown Indicators

	ENTA	IBB	Difference
Max Drawdown Largest peak-to-trough decline	-96.63%	-62.85%	-33.78%
Max Drawdown (1Y) Largest decline over 1 year	-31.86%	-11.65%	-20.21%
Max Drawdown (5Y) Largest decline over 5 years	-95.62%	-39.82%	-55.80%
Max Drawdown (10Y) Largest decline over 10 years	-96.63%	-39.82%	-56.81%
Current Drawdown Current decline from peak	-90.01%	-4.88%	-85.13%
Average Drawdown Average peak-to-trough decline	-48.66%	-21.30%	-27.36%
Ulcer Index Depth and duration of drawdowns from previous peaks	16.05%	3.47%	+12.58%

Volatility

ENTA vs. IBB - Volatility Comparison

Enanta Pharmaceuticals, Inc. (ENTA) has a higher volatility of 18.26% compared to iShares Nasdaq Biotechnology ETF (IBB) at 8.62%. This indicates that ENTA's price experiences larger fluctuations and is considered to be riskier than IBB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ENTA	IBB	Difference
Volatility (1M) Calculated over the trailing 1-month period	18.26%	8.62%	+9.64%
Volatility (6M) Calculated over the trailing 6-month period	45.61%	14.53%	+31.08%
Volatility (1Y) Calculated over the trailing 1-year period	112.53%	24.08%	+88.45%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	73.20%	21.87%	+51.33%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	60.67%	23.37%	+37.30%