- ISIN
- US0021202025
- Sector
- Healthcare
- Industry
- Biotechnology
- IPO Date
- May 7, 2015
Highlights
- Market Cap
- $47.62M
- Enterprise Value
- $50.80M
- EPS (TTM)
- -$0.72
- Total Revenue (TTM)
- $190.00K
- Gross Profit (TTM)
- -$22.33M
- EBITDA (TTM)
- -$71.35M
- Year Range
- $0.40 - $6.50
- Target Price
- $5.13
- ROA (TTM)
- -87.92%
- ROE (TTM)
- -120.88%
- Avg. Volume (1M)
- 1M
- Avg. Volume Value (1M)
- $749.13K
Share Price Chart
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Performance
ATYR Performance Chart
aTyr Pharma, Inc. (ATYR) is down 38.0% since the beginning of the year. At $0 per share, ATYR is trading 92.5% below its 52-week high of $7. Investors who bought $1,000 worth of ATYR shares 5 years ago would now be looking at an investment worth $104.
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Returns By Period
aTyr Pharma, Inc. (ATYR) has returned -37.98% so far this year and -89.67% over the past 12 months. Over the last ten years, ATYR has returned -36.17% per year, falling short of the S&P 500 Index benchmark, which averaged 13.26% annually.
aTyr Pharma, Inc.
- 1D
- 1.19%
- 1M
- -18.03%
- 6M
- -44.98%
- YTD
- -37.98%
- 1Y
- -89.67%
- 3Y*
- -37.30%
- 5Y*
- -36.38%
- 10Y*
- -36.17%
- ALL TIME*
- -41.10%
Benchmark (S&P 500 Index)
- 1D
- 0.70%
- 1M
- 0.09%
- 6M
- 7.94%
- YTD
- 9.41%
- 1Y
- 20.07%
- 3Y*
- 17.84%
- 5Y*
- 11.25%
- 10Y*
- 13.26%
- ALL TIME*
- 8.09%
ATYR Monthly Returns History
Based on dividend-adjusted daily data since May 7, 2015, ATYR's average daily return is -0.04%, while the average monthly return is -1.37%.
Historically, 45% of months were positive and 55% were negative. The best month was Oct 2024 with a return of +77.3%, while the worst month was Sep 2025 at -86.6%. The longest winning streak lasted 5 consecutive months, and the longest losing streak was 6 months.
On a daily basis, ATYR closed higher 44% of trading days. The best single day was Sep 13, 2021 with a return of +67.0%, while the worst single day was Sep 15, 2025 at -83.2%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 12.73% | 8.72% | -18.73% | 3.51% | -32.81% | 10.01% | -18.62% | -37.98% | |||||
| 2025 | 6.63% | 2.46% | -23.64% | 14.90% | 28.82% | 13.42% | -6.90% | 13.98% | -86.59% | 20.04% | -9.87% | 0.33% | -78.37% |
| 2024 | 13.12% | 20.38% | 1.56% | -19.49% | 10.19% | -9.83% | 26.92% | -5.56% | -5.88% | 77.27% | 13.14% | 2.55% | 156.74% |
| 2023 | 5.02% | -8.26% | -0.47% | -7.14% | 16.41% | -4.85% | -9.26% | -13.27% | -7.06% | -20.89% | 4.00% | 8.46% | -35.62% |
| 2022 | -23.83% | -12.83% | 7.86% | -22.24% | -32.45% | 0.71% | 24.03% | -2.56% | -12.28% | -17.67% | -12.55% | 1.39% | -70.68% |
| 2021 | -5.41% | 18.53% | 2.30% | -8.99% | 12.10% | 7.49% | -4.51% | 18.35% | 64.64% | -5.40% | -2.91% | -10.43% | 92.53% |
Benchmark Metrics
aTyr Pharma, Inc. has an annualized alpha of -19.65%, beta of 1.00, and R2 of 0.04 versus S&P 500 Index. Calculated based on daily prices since May 07, 2015.
- This stock participated in 194.30% of S&P 500 Index downside but only -33.61% of its upside - more exposed to losses than it benefited from rallies.
- R2 of 0.04 means this stock moves largely independently of S&P 500 Index - capture ratios reflect limited market correlation rather than active downside protection. Consider using a more representative benchmark.
- Alpha
- -19.65%
- Beta
- 1.00
- R²
- 0.04
- Upside Capture
- -33.61%
- Downside Capture
- 194.30%
Return for Risk
Risk / Return Rank
ATYR ranks 14 for risk / return — above 14% of stocks peers on PortfoliosLab. Its historical combined result is below most peers; review the five component ranks for context.
Risk / Return Metrics
The table below present risk-adjusted performance metrics for aTyr Pharma, Inc. (ATYR) and compare them to S&P 500 Index.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| ATYR | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.07 | ||
| Sortino ratioReturn per unit of downside risk | -2.62 | ||
| Omega ratioGain probability vs. loss probability | 0.89 | 1.25 | -0.37 |
| Calmar ratioReturn relative to maximum drawdown | -0.96 | 2.00 | -2.96 |
| Martin ratioReturn relative to average drawdown | -1.09 | 8.49 | -9.59 |
Dividends
Dividend History
Drawdowns
Drawdowns Chart
The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.
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Worst Drawdowns
The table below displays the maximum drawdowns of the aTyr Pharma, Inc.. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.
The maximum drawdown for the aTyr Pharma, Inc. was 99.90%, occurring on May 13, 2026. The portfolio has not yet recovered.
The current aTyr Pharma, Inc. drawdown is 99.88%.
Drawdown | Fall | Recovery | Underwater | Related event |
|---|---|---|---|---|
-99.90%May 2026 | 10y 11mo | — | 11y 2moJun 2015 - now | — |
-9.67%May 2015 | 2d | 5d | 7dMay 2015 - Jun 2015 | — |
-9.18%May 2015 | 1d | 7d | 7dMay 2015 - May 2015 | — |
Drawdown Indicators
| ATYR | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -99.90% | -56.78% | -43.12% |
Max Drawdown (1Y)Largest decline over 1 year | -93.43% | -9.10% | -84.33% |
Max Drawdown (3Y)Largest decline over 3 years | -94.01% | -18.90% | -75.11% |
Max Drawdown (5Y)Largest decline over 5 years | -96.83% | -25.43% | -71.40% |
Max Drawdown (10Y)Largest decline over 10 years | -99.55% | -33.92% | -65.63% |
Current DrawdownCurrent decline from peak | -99.88% | -1.58% | -98.30% |
Average DrawdownAverage peak-to-trough decline | -93.24% | -10.70% | -82.54% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 81.96% | 2.14% | +79.82% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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Financials
Financial Performance
The chart below illustrates the trends in the financial health of aTyr Pharma, Inc. over time, highlighting three key metrics: Total Revenue, Earnings Before Interest and Taxes (EBIT), and Net Income.
Valuation
The Valuation section provides an overview of how aTyr Pharma, Inc. is priced in the market compared to other companies in the Biotechnology industry. It includes key financial ratios that help investors assess whether the stock is undervalued or overvalued.
PS Ratio
This chart shows the Price-to-Sales (P/S) ratio for ATYR relative to other companies in the Biotechnology industry. Currently, ATYR has a P/S ratio of 249.8. This P/S ratio is high relative to other companies in the industry. It could mean the stock is overvalued, or that investors expect strong future growth and profitability.
PB Ratio
The chart illustrates the Price-to-Book (P/B) ratio for ATYR in comparison with other companies in the Biotechnology industry. Currently, ATYR has a P/B value of 0.8. This P/B ratio is low compared to industry peers. It might indicate the stock is undervalued or that the company’s assets are not expected to generate strong returns.
Income Statement
| TTM | |
|---|---|
Revenue | |
Total Revenue | — |
Cost Of Revenue | — |
Gross Profit | — |
Operating Expenses | |
Selling, General & Admin Expenses | — |
R&D Expenses | — |
Depreciation And Amortization | — |
Total Operating Expenses | — |
Income | |
Income Before Tax | — |
Operating Income | — |
EBITDA | — |
EBIT | — |
Earnings From Continuing Operations | — |
Net Income | — |
Income Tax Expense | — |
Other Non-Operating Income (Expenses) | — |
Extraordinary Items | — |
Discontinued Operations | — |
Effect Of Accounting Charges | — |
Non Recurring | — |
Minority Interest | — |
Other Items | — |
Interest Income | — |
Interest Expense | — |
Net Interest Income | — |
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