Atara Biotherapeutics, Inc. (ATRA) stock
Close on Nov 13, 2026Market cap $77.29MP/E –Yield –
Atara Biotherapeutics statistics
72 measures from SEC filings and the closing price. Hover a name for the formula; the last column is the median of companies in the same industry group.
Important dates
- Next earnings
- Mar 15, 2027 (estimated, during market hours)
- Last ex-dividend date
- No dividends
- Fundamentals through
- Sep 30, 2026
- Share price as of
- Nov 13, 2026
Valuation ratiosIndustry
Enterprise valuationIndustry
- EV / Sales
- 17.00
- 2.57
Share statisticsIndustry
- Shares Change (YoY)
- 23.0%
- 10.8%
- Shares Change (QoQ)
- 7.89%
- 0.50%
- Float
- 4M
- 49M
- Shares Held by Insiders
- 55.5%
- 11.7%
- Shares Held by Institutions
- 44.5%
- 56.4%
Short sellingIndustry
- Short Interest
- 296,651
- –
- Short Interest Change
- -15.3%
- -0.80%
- Short % of Float
- 6.63%
- 9.01%
- Short % of Shares Outstanding
- 2.96%
- 6.30%
- Days to Cover
- 13.43
- 5.15
Stock price statisticsIndustry
- 52-Week High
- $19.14
- –
- 52-Week Low
- $3.92
- –
- 20-Day Moving Average
- $8.42
- –
- 50-Day Moving Average
- $8.94
- –
- 200-Day Moving Average
- $7.83
- –
- Average True Range (14)
- $0.58
- –
- Price Change (1 Week)
- -2.16%
- -1.15%
- Price Change (1 Month)
- -20.2%
- -4.87%
- Price Change (3 Months)
- -7.89%
- -21.0%
- Price Change (6 Months)
- -19.6%
- -20.6%
- Price Change (YTD)
- -57.4%
- -23.6%
- Price Change (1 Year)
- -38.3%
- -22.4%
- Price Change (3 Years)
- -11.4%
- -29.5%
- Price Change (5 Years)
- -98.3%
- -77.9%
- Price Change (10 Years)
- -98.5%
- -65.4%
- Average Volume (10 Days)
- 19,554
- –
- Average Volume (20 Days)
- 21,119
- –
- Average Volume (90 Days)
- 44,830
- –
- Relative Volume
- 0.38
- 0.70
- Relative Strength Index (14)
- 38.4
- 43.4
- Volatility (1 Year)
- 141.6%
- 80.1%
- Beta (5 Years)
- 1.64
- 1.07
MarginsIndustry
- Pretax Margin
- -368.6%
- -11.6%
- EBITDA Margin
- -341.2%
- -27.7%
Returns on capitalIndustry
- Return on Assets (ROA)
- -59.9%
- -40.6%
- Return on Capital Employed (ROCE)
- -113.1%
- -37.9%
Financial positionIndustry
- Current Ratio
- 1.72
- 3.30
- Quick Ratio
- 1.61
- 2.39
GrowthIndustry
- Revenue Growth (YoY)
- -97.4%
- 6.82%
- Net Income Growth (YoY)
- -162.5%
- -14.4%
- Revenue Growth (3Y CAGR)
- 23.9%
- 2.25%
EfficiencyIndustry
- Asset Turnover
- 0.16
- 0.40
- Revenue Per Employee
- $283.21K
- $429.29K
- Profits Per Employee
- -$1.04M
- -$689.41K
- Employee Count
- 14
- 74
- WACC
- 13.3%
- 10.2%
Income statement (TTM)Industry
- Pretax Income
- -$14.61M
- -$12.95M
Balance sheetIndustry
- Net Cash (Debt)
- $9.90M
- $17.76M
- Net Cash Per Share
- $0.99
- $0.80
- Equity (Book Value)
- -$37.90M
- $53.89M
- Book Value Per Share
- -$3.78
- $1.50
- Tangible Book Value
- -$37.90M
- $27.13M
- Working Capital
- $4.75M
- $79.99M
Cash flow (TTM)Industry
Dividends and yieldsIndustry
- Earnings Yield
- -18.9%
- -21.8%
- Buyback Yield
- -11.2%
- -0.76%
- Shareholder Yield
- -11.2%
- 0.00%
Taxes and interestIndustry
- Income Tax
- $1.00K
- $73.00K
Scores and fair valueIndustry
- Altman Z-Score
- -154.05
- 0.23
- Piotroski F-Score
- 5
- 4
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 13, 2026. The S&P 500 is measured by the SPY fund.
| Period | ATRA | S&P 500 | Difference | ATRA per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | -17.2% | -3.0% | −14.2 pts | ||
| 3 months | -9.5% | -2.8% | −6.7 pts | ||
| Year to date | -57.4% | +11.5% | −68.9 pts | ||
| 1 year | -42.5% | +13.5% | −56.0 pts | ||
| 3 years | +19.8% | +77.7% | −57.9 pts | +6.2% | +21.1% |
| 5 years | -98.3% | +72.6% | −170.9 pts | -55.5% | +11.5% |
| 10 years | -98.5% | +308.2% | −406.6 pts | -34.2% | +15.1% |
Short interest
Shares sold short and not yet covered, reported by brokers to FINRA twice a month. Latest settlement date Oct 30, 2026.
0M ATRA shares were sold short on Oct 30, 2026, down 15.3% from the previous report, or 6.63% of the shares available to trade. At recent volumes it would take 13.4 days to buy them back. Over the last 20 sessions, 42.2% of the volume reported to FINRA was short selling.
| Settlement date | Shares short | Change | Avg. daily volume | Days to cover |
|---|---|---|---|---|
| Oct 30, 2026 | 296,651 | -15.3% | 22,085 | 13.4 |
| Oct 15, 2026 | 350,260 | +8.8% | 40,263 | 8.7 |
| Sep 30, 2026 | 321,792 | -20.4% | 39,657 | 8.1 |
| Sep 15, 2026 | 404,270 | -5.4% | 55,057 | 7.3 |
| Aug 31, 2026 | 427,435 | -10.4% | 38,619 | 11.1 |
| Aug 14, 2026 | 477,268 | -11.1% | 51,842 | 9.2 |
| Jul 31, 2026 | 536,897 | -7.1% | 57,166 | 9.4 |
| Jul 15, 2026 | 577,635 | +59.8% | 92,530 | 6.2 |
| Jun 30, 2026 | 361,520 | -26.6% | 91,505 | 4.0 |
| Jun 15, 2026 | 492,405 | +1.7% | 78,554 | 6.3 |
| May 29, 2026 | 484,391 | -11.4% | 166,237 | 2.9 |
| May 15, 2026 | 546,470 | +78.5% | 7,386,437 | 1.0 |
Ratios use trailing-twelve-month results and the latest balance sheet. How we calculate.
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