ATRA
Atara Biotherapeutics, Inc. Healthcare - Biotechnology Investor Relations →
Atara Biotherapeutics, Inc. (ATRA) closed at $4.91 as of 2026-03-20, trading 87.5% below its 200-week moving average of $39.15. This places ATRA in the extreme value zone. The stock is currently moving closer to the line, down from -83.7% last week. With a 14-week RSI of 18, ATRA is in oversold territory.
Trading volume is running at 0.5x of its 14-week average, which is in the normal range. The balance between buying and selling volume (0.85 ratio) is neutral — neither side is clearly dominating.
Over the past 548 weeks of data, ATRA has crossed below its 200-week moving average 4 times. On average, these episodes lasted 118 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 $40 million, ATRA is a small-cap stock. Free cash flow yield is currently negative, meaning the company is burning cash. The stock trades at -0.9x book value.
Share count has increased 90.9% over three years, indicating dilution.
Over the past 10.6 years, a hypothetical investment of $100 in ATRA would have grown to $1, compared to $405 for the S&P 500. ATRA has returned -38.6% annualized vs 14.1% for the index, underperforming the broader market over this period.
Free cash flow has been volatile over the past several years, making the quality of earnings harder to assess.
Business Health
Annual financials — how the underlying business has performed over the past several years.
Cash Flow Free cash flow & net income ($M)
Revenue Annual revenue ($M) — business growth proxy
Total Debt Balance sheet debt ($M)
ROIC Return on invested capital (%)
FCF Yield Free cash flow / market cap (%) — Yartseva signal
Gross Margin Pricing power & competitive moat (%)
Shares Outstanding Buybacks vs dilution (millions)
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 | 275+ | 97.7% | Ongoing | -99.1% |
| Average | 118 | — | +-49.2% | — |
Frequently Asked Questions
Is ATRA below its 200-week moving average?
Yes. As of 2026-03-20, Atara Biotherapeutics, Inc. (ATRA) is trading 87.5% below its 200-week moving average of $39.15. The current price is $4.91.
What is ATRA's 200-week moving average price?
Atara Biotherapeutics, Inc.'s 200-week moving average is $39.15 as of 2026-03-20. This is the average weekly closing price over roughly the last 4 years, and it acts as a long-term trend line. When a stock drops below this level, it can signal that the price has fallen far enough from the long-term trend to attract value-oriented investors.
What happens when ATRA drops below its 200-week moving average?
ATRA has crossed below its 200-week moving average 4 times in our data. The average one-year return after these crossings was -49.2%, meaning the dips were not reliable buying signals for this particular stock. These episodes lasted 118 weeks on average.
Is ATRA a good value right now?
Here's what our data says about ATRA as of 2026-03-20: The stock is below its 200-week moving average, which is the starting point for our analysis. The 14-week RSI is 18 (oversold). Free cash flow is currently negative. Price-to-book is -0.9x. This is not a buy or sell recommendation — always do your own research.
How does ATRA compare to the S&P 500?
Over the past 10.6 years, $100 invested in ATRA would have grown to $1, compared to $405 for the S&P 500. That's -38.6% annualized vs 14.1% for the index. ATRA has underperformed the broader market over this period.
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 week of 2026-03-20