Atara Biotherapeutics Inc
NASDAQ: ATRA · HEALTHCARE · BIOTECHNOLOGY
Updated 2026-04-30
Atara Biotherapeutics Inc (ATRA) Stock Valuation Analysis
Fair value estimate, historical valuation range, and quality signals for ATRA.
Current price exceeds what fundamentals support. Risk/reward skewed unfavorably.
ATRA historical valuation range
Where current P/E sits in ATRA's own 5Y range.
ATRA intrinsic value (DCF)
DCF-based fair value estimate vs current market price.
Standard discounted cash flow models produce unreliable output for unprofitable or near-breakeven companies. Revenue-based multiples such as P/S and EV/Sales, combined with the historical valuation position above, give a more reliable read for this stock.
Intrinsic value calculated using discounted cash flow (DCF) model based on projected free cash flows, discount rate, and terminal growth assumptions. A positive margin of safety indicates the current price is below estimated fair value, providing a cushion against estimation error.
ATRA valuation signals
Quick-read green flags, caution flags, and risks based on current metrics.
P/E Ratio — History
Current: 1.95x
P/S Ratio — History
Current: 0.34x
Is ATRA overvalued in 2026?
Atara Biotherapeutics Inc (ATRA) currently trades at $4.77 per share with a market capitalization of $40,972,400.00. Based on our multi-factor framework, the stock appears richly valued with a Smart Value Score of 34/100. This score blends growth quality, financial health, and price attractiveness into a single institutional-grade read.
The stock trades at a P/E ratio of 1.9x, below its 5-year median of 2.0x.
Looking at its own history, ATRA is currently trading cheaper than 57% of the last 5Y on P/E. This places it in the 43th percentile of its historical range, a reasonable but unremarkable position.
A standard DCF model does not produce reliable output for ATRA under current conditions. For unprofitable or near-breakeven companies, revenue-based multiples such as EV/Sales and historical P/S percentile are more informative than intrinsic value calculations.
Financial quality is a concern. The Piotroski F-Score of 0/9 flags weakening fundamentals that deserve closer scrutiny before the valuation case can be fully trusted.
Bottom line: ATRA appears richly valued on our framework, with a Smart Value Score of 34/100. At current levels the risk/reward is skewed against the buyer. A materially lower price or significant operational improvement would be needed to change the picture.
Frequently asked questions
Is ATRA overvalued in 2026?
Based on a Smart Value Score of 34/100, ATRA appears overvalued. Current price exceeds what fundamentals currently justify.
What is ATRA's fair value?
Standard DCF is unreliable for ATRA due to its current profitability profile. Revenue-based approaches such as EV/Sales or historical P/S percentile are more informative for this stock.
What P/E ratio does ATRA trade at?
ATRA trades at a P/E of 1.9x on trailing twelve-month earnings, compared to its 5-year median of 2.0x.
Is ATRA a buy based on valuation?
WallStSmart does not issue buy or sell recommendations. Our Smart Value Score of 34/100 reflects the combined read on growth, quality, and price. The profile skews cautious. Consider waiting for a better price or clearer operational improvement.
How does ATRA's valuation compare to its history?
On P/E, ATRA currently sits in the 43th percentile of its own 5Y range. That is below its long-run median relative to where it has traded over the period.
What is ATRA's Smart Value Score?
ATRA's Smart Value Score is 34/100. The Smart Value Score is a proprietary WallStSmart metric blending growth quality, financial health, and valuation attractiveness into a single 0-100 read. Scores above 75 are rare and indicate strong multi-factor alignment.