Castle Biosciences Inc
CSTL- Exchange
- Nasdaq
- Industry
- Services-Medical Laboratories
- SEC CIK
- 0001447362
In the last 90 days, Castle Biosciences Inc insiders filed 0 open-market purchases and 20 sales; 176 institutions reported holding it in 13F filings for Q2 2026, worth $653.8M in total; no superinvestor holds it.
Superinvestors holding CSTL, Q2 2026
No superinvestor reported holding CSTL in Q2 2026.
Moves by quarter
Superinvestors that opened, added to, trimmed or sold out of CSTL each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.
Q2 2022
0 superinvestors holding at quarter end
- Sold out
- ARK Invest
Q1 2022
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−3.6%)
Q4 2021
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−41.0%)
Q3 2021
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−18.5%)
Q2 2021
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−2.8%)