RIGL vs. ATRA

Last updated Jun 3, 2026

RIGL (Rigel Pharmaceuticals, Inc.) and ATRA (Atara Biotherapeutics, Inc.) are both stocks. Both operate in the Biotechnology industry within the Healthcare sector. Over the past 10 years, RIGL returned 1.65%/yr vs -31.79%/yr for ATRA. At a 0.34 correlation, their price movements are largely independent.

Performance

RIGL vs. ATRA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Rigel Pharmaceuticals, Inc. (RIGL) and Atara Biotherapeutics, Inc. (ATRA). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RIGL achieves a -29.91% return, which is significantly higher than ATRA's -45.27% return. Over the past 10 years, RIGL has outperformed ATRA with an annualized return of 1.65%, while ATRA has yielded a comparatively lower -31.79% annualized return.

RIGL

• 1D: 0.54%
• 1M: 2.11%
• YTD: -29.91%
• 6M: -32.40%
• 1Y: 48.98%
• 3Y*: 28.95%
• 5Y*: -4.61%
• 10Y*: 1.65%

ATRA

• 1D: -3.70%
• 1M: 102.04%
• YTD: -45.27%
• 6M: -18.99%
• 1Y: 23.75%
• 3Y*: -36.41%
• 5Y*: -50.50%
• 10Y*: -31.79%

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

RIGL vs. ATRA - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RIGL Rigel Pharmaceuticals, Inc.	-29.91%	154.64%	16.00%	-3.33%	-43.40%	-24.29%	63.55%	-6.96%	-40.72%	63.03%
ATRA Atara Biotherapeutics, Inc.	-45.27%	35.91%	3.82%	-84.37%	-79.19%	-19.71%	19.19%	-52.59%	91.93%	27.46%

Correlation

The correlation between RIGL and ATRA is 0.17, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.17
Correlation (3Y) Calculated over the trailing 3-year period	0.27
Correlation (5Y) Calculated over the trailing 5-year period	0.32
Correlation (10Y) Calculated over the trailing 10-year period	0.34
Correlation (All Time) Calculated using the full available price history since Oct 17, 2014	0.34

The correlation between RIGL and ATRA shifts across timeframes, from 0.17 (1 year) to 0.34 (10 years), reflecting how their relationship changes across market environments.

Fundamentals

Market Cap RIGL : $590.97M ATRA : $139.40M
EPS RIGL : $19.21 ATRA : -$0.72
PS Ratio RIGL : 1.90 ATRA : 5.76
Total Revenue (TTM) RIGL : $299.77M ATRA : $22.62M
Gross Profit (TTM) RIGL : $279.95M ATRA : $21.73M
EBITDA (TTM) RIGL : $125.80M ATRA : -$6.92M

Return for Risk

RIGL vs. ATRA — Risk / Return Rank

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

RIGL

RIGL Risk / Return Rank: 63
RIGL Sharpe Ratio Rank: 63
RIGL Sortino Ratio Rank: 66
RIGL Omega Ratio Rank: 64
RIGL Calmar Ratio Rank: 63
RIGL Martin Ratio Rank: 60

ATRA

ATRA Risk / Return Rank: 55
ATRA Sharpe Ratio Rank: 46
ATRA Sortino Ratio Rank: 62
ATRA Omega Ratio Rank: 69
ATRA Calmar Ratio Rank: 49
ATRA Martin Ratio Rank: 47

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.

RIGL vs. ATRA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rigel Pharmaceuticals, Inc. (RIGL) and Atara Biotherapeutics, Inc. (ATRA). 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.

	RIGL	ATRA	Difference
Sharpe ratio Return per unit of total volatility	0.70	0.17	+0.54
Sortino ratio Return per unit of downside risk	1.55	1.42	+0.13
Omega ratio Gain probability vs. loss probability	1.19	1.23	-0.03
Calmar ratio Return relative to maximum drawdown	1.13	0.35	+0.78
Martin ratio Return relative to average drawdown	2.02	0.62	+1.40
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RIGL vs. ATRA - Sharpe Ratio Comparison

The current RIGL Sharpe Ratio is 0.70, which is higher than the ATRA Sharpe Ratio of 0.17. The chart below compares the historical Sharpe Ratios of RIGL and ATRA, 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

	RIGL	ATRA	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.70	0.17	+0.54
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.05	-0.42	+0.36
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.02	-0.32	+0.34
Sharpe Ratio (All Time) Calculated using the full available price history	-0.13	-0.25	+0.12

Drawdowns

RIGL vs. ATRA - Drawdown Comparison

The maximum RIGL drawdown since its inception was -99.37%, roughly equal to the maximum ATRA drawdown of -99.74%. Use the drawdown chart below to compare losses from any high point for RIGL and ATRA.

Drawdown Indicators

	RIGL	ATRA	Difference
Max Drawdown Largest peak-to-trough decline	-99.37%	-99.74%	+0.37%
Max Drawdown (1Y) Largest decline over 1 year	-50.08%	-76.89%	+26.81%
Max Drawdown (3Y) Largest decline over 3 years	-57.75%	-92.76%	+35.01%
Max Drawdown (5Y) Largest decline over 5 years	-85.24%	-99.16%	+13.92%
Max Drawdown (10Y) Largest decline over 10 years	-86.40%	-99.68%	+13.28%
Current Drawdown Current decline from peak	-97.19%	-99.38%	+2.19%
Average Drawdown Average peak-to-trough decline	-90.91%	-73.99%	-16.92%
Ulcer Index Depth and duration of drawdowns from previous peaks	27.87%	43.41%	-15.54%

Volatility

RIGL vs. ATRA - Volatility Comparison

The current volatility for Rigel Pharmaceuticals, Inc. (RIGL) is 19.95%, while Atara Biotherapeutics, Inc. (ATRA) has a volatility of 72.26%. This indicates that RIGL experiences smaller price fluctuations and is considered to be less risky than ATRA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RIGL	ATRA	Difference
Volatility (1M) Calculated over the trailing 1-month period	19.95%	72.26%	-52.31%
Volatility (6M) Calculated over the trailing 6-month period	39.84%	133.02%	-93.18%
Volatility (1Y) Calculated over the trailing 1-year period	70.01%	143.93%	-73.92%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	85.52%	122.01%	-36.49%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	82.84%	100.24%	-17.40%

Dividends

RIGL vs. ATRA - Dividend Comparison

Neither RIGL nor ATRA has paid dividends to shareholders.

Tickers have no history of dividend payments

Financials

Frequently Asked Questions

Can I hold both RIGL and ATRA in my portfolio?

RIGL and ATRA have a correlation of 0.17, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RIGL or ATRA?

ATRA has higher volatility (72.26%) compared to RIGL (19.95%). In terms of maximum drawdown, RIGL dropped -99.37% vs ATRA's -99.74%.

Which has better risk-adjusted returns?

RIGL currently has the higher Sharpe Ratio (0.70 vs 0.17), 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.