CSTL (Castle Biosciences Inc.) historical data
STOCKListed1-minute bars
| Symbol | CSTL |
|---|---|
| Name | Castle Biosciences Inc. |
| Exchange | NASDAQ |
| Sector | Healthcare |
| Industry | Medical - Diagnostics & Research |
| IPO date | 2019-07-25 |
| History | 2019-07-26 to 2026-10-09 (about 7 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
CSTL last closed at $34.42 on 2026-10-09, +45.5% over the past year and -43.8% over five years. Its deepest fall from a prior high in this history was -88.0%, reached on 2023-06-05.
| Last close | $34.42 (2026-10-09) |
|---|---|
| 1-year change | +45.5% |
| 5-year change | -43.8% |
| Annualized since 2019-07-26 | +5.8% |
| 52-week range | $18.15 – $43.04 |
| Deepest drawdown | -88.0% (2023-06-05) |
| Avg. daily dollar volume (3 months) | $12.6m |
| Daily bars in history | 1,811 |
Split- and dividend-adjusted closes. Computed by FinzData from its own daily bars.
Institutional ownership (13F, 2026Q2)
| Managers holding | 176 |
|---|---|
| Shares held | 27,341,828 ($652.8m reported value) |
| Quarter flows | 24 new, 79 added, 56 trimmed, 34 exited; -267,991 shares vs the prior quarter |
From SEC Form 13F filings. Every holder, line by line, and the full history since 2013: yf.Client().holders("CSTL") on the look-back bundles. Top holders of CSTL · All 13F managers
Short interest (2026-09-30)
| Shares short | 1,999,726 (+5.3% vs prior report) |
|---|---|
| Days to cover | 4.77 |
CSTL short interest history · Healthcare sector
Get it in Python
import finzdata as yf
df = yf.Ticker("CSTL").history(start="2019-07-26", interval="1d")
df.tail()