35 /100
HIGH RISK
Score updated Feb 26, 2026
ATRA
Atara Biotherapeutics, Inc.

DilutionScore™ measures dilution risk across 5 factors. Lower scores indicate higher risk of share dilution.

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📊 Score Breakdown
📋 Offering Ability
80
💰 Cash Runway
5
📊 Float Risk
70
⚠️ Warrant Exposure
85
🔄Convertible Debt
💹 Market Data
Market Cap$37.93M
Shares Outstanding7.21M
Float4.63M
Cash$13.71M
Debt$16.96M
Short InterestN/A
🏛 Institutional Holdings
39 institutional holders · 1.89M shares
#1 EcoR1 Capital, LLC 573.2K shares
#2 Redmile Group, LLC 441.7K shares
#3 VANGUARD GROUP INC 203.4K shares
+ 17 more holders Sign up free to view →
📉 Short Interest
Short Interest1.02M
Days to Cover1.0
% of Float21.9%
FINRA data as of Jan 15, 2026
📁 Recent SEC Activity
xbrl XBRL CONVERTIBLE Dec 31, 2014
Full SEC filing analysis available with free account
📰 Recent News
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