ATRA
Atara Biotherapeutics, Inc. Healthcare - Biotechnology Investor Relations →
Atara Biotherapeutics, Inc. (ATRA) closed at $4.88 as of 2026-02-02, trading 88.9% below its 200-week moving average of $43.89. This places ATRA in the extreme value zone. The stock is currently moving closer to the line, down from -88.4% last week. The 14-week RSI sits at 31, indicating neutral momentum.
Over the past 542 weeks of data, ATRA has crossed below its 200-week moving average 4 times. On average, these episodes lasted 117 weeks. The average one-year return after crossing below was -49.2%, suggesting these dips have not historically been reliable buying opportunities for this stock.
With a market cap of $35 million, ATRA is a small-cap stock. Free cash flow yield is currently negative, meaning the company is burning cash. The stock trades at -1.0x book value.
Share count has increased 59.8% over three years, indicating dilution.
Over the past 10.5 years, a hypothetical investment of $100 in ATRA would have grown to $1, compared to $430 for the S&P 500. ATRA has returned -38.9% annualized vs 14.9% for the index, underperforming the broader market over this period.
Free cash flow has been volatile over the past several years, making the quality of earnings harder to assess.
Growth of $100: ATRA vs S&P 500
Monthly data normalized to $100 at start. Vertical dashed lines mark 200-week MA touches.
What Happens After ATRA Crosses Below the Line?
Across 4 historical episodes, buying ATRA when it crossed below its 200-week moving average produced an average return of -37.8% after 12 months (median -37.0%), compared to +17.2% for the S&P 500 over the same periods. After 24 months, the average return was -51.8% vs +34.0% for the index.
Each line shows $100 invested at the moment ATRA crossed below its 200-week MA. Bold blue = stock average. Gray dashed = S&P 500 average over same periods.
Historical Touches
ATRA has crossed below its 200-week MA 4 times with an average 1-year return of +-49.2% after recovery.
| Crossed Below | Recovered | Weeks | Max Depth | 1-Year Return | Return Since Touch |
|---|---|---|---|---|---|
| Sep 2015 | Nov 2015 | 8 | 33.2% | -37.4% | -99.4% |
| Dec 2015 | Jan 2018 | 109 | 54.6% | -49.1% | -99.4% |
| May 2019 | Nov 2020 | 81 | 68.6% | -61.0% | -99.2% |
| Dec 2020 | Ongoing | 269+ | 97.7% | Ongoing | -99.1% |
| Average | 117 | — | +-49.2% | — |
Not financial advice. This is an educational tool. Past performance does not guarantee future results. Do your own research before making investment decisions.
Data as of Friday close, 2026-02-02