ATYR (aTyr Pharma Inc.) historical data
STOCKListed1-minute bars
| Symbol | ATYR |
|---|---|
| Name | aTyr Pharma Inc. |
| Exchange | NASDAQ |
| Sector | Healthcare |
| Industry | Biotechnology |
| IPO date | 2015-05-07 |
| History | 2015-05-08 to 2026-10-09 (about 11 years) |
| Bar sizes | Daily, hourly, 5-minute and 1-minute |
| Adjustments | Unadjusted, split-adjusted or split-and-dividend-adjusted, chosen on read |
| Survivorship | Included in the survivorship-free universe |
| Free tier | Last 12 months of daily bars |
Price history at a glance
ATYR last closed at $0.25 on 2026-10-09, -74.2% over the past year and -97.2% over five years. Its deepest fall from a prior high in this history was -99.9%, reached on 2026-10-09.
| Last close | $0.25 (2026-10-09) |
|---|---|
| 1-year change | -74.2% |
| 5-year change | -97.2% |
| Annualized since 2015-05-08 | -45.8% |
| 52-week range | $0.25 – $1.06 |
| Deepest drawdown | -99.9% (2026-10-09) |
| Avg. daily dollar volume (3 months) | $1.2m |
| Daily bars in history | 2,873 |
Split- and dividend-adjusted closes. Computed by FinzData from its own daily bars.
Institutional ownership (13F, 2026Q2)
| Managers holding | 90 |
|---|---|
| Shares held | 40,639,781 ($24.2m reported value) |
| Quarter flows | 16 new, 29 added, 30 trimmed, 37 exited; -15,416,433 shares vs the prior quarter |
From SEC Form 13F filings. Every holder, line by line, and the full history since 2013: yf.Client().holders("ATYR") on the look-back bundles. Top holders of ATYR · All 13F managers
Short interest (2026-09-30)
| Shares short | 12,893,008 (+20.9% vs prior report) |
|---|---|
| Days to cover | 1.00 |
ATYR short interest history · Healthcare sector
Get it in Python
import finzdata as yf
df = yf.Ticker("ATYR").history(start="2015-05-08", interval="1d")
df.tail()