Stock overview
Castle Biosciences Inc.
Explore the company, reported ownership, price history, and available source evidence.
CASTLE BIOSCIENCES INC (CSTL) is a healthcare or biotechnology equity security tracked from 13F filings.
- Last close
- $35.81
- · CSTL
- Tracked holders
- 2 funds
- Latest available 13F per fund
CSTL · USD
Price
$35.81
+$13.07
(+57.48%)
over selected range
Close · Sep 25, 2026
Market closed
252 stored daily closes
$35.81
Sep 25, 2026
- Range low
- $18.15
- Range high
- $43.04
- Observations
- 252
- Session date
- Sep 25, 2026
Sep 25, 2025–Sep 25, 2026. Regular market hours only. Historical prices are unadjusted; splits and other corporate actions can affect comparisons.
Investor Popularity
Rows are narrowed by movement, fund type, and position size.
| Fund | Move | Value | Weight |
|---|---|---|---|
| Renaissance Technologies largest tracked holder Q2 2026 · filed Aug 13, 2026 · SEC filing | −30% 26'Q2 | $8,853,120 | 0.01% |
| Tudor Investment Corp position history Q2 2026 · filed Aug 14, 2026 · SEC filing | −94% 26'Q2 | $344,919 | 0% |
SEC Forms 4/5
Insiders
Financials
Official-source analysis
AI Earnings Report
No published AI Earnings Report yet
We publish a cited AI Earnings Report after an eligible official earnings filing is accepted and passes validation.
Options market