Simplex Trading, LLC
- SEC CIK
- 0001488542
- Latest filing
- Aug 12, 2026
CSTL holding history
Castle Biosciences Inc in every 13F filed by Simplex Trading, LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
CSTL overviewAll 13F holders of CSTLFull Q2 2026 holdings
- Shares (Q4 2025)
- 0
- Sold out in Q4 2025
- Value
- $0
- % of portfolio
- 0.0%
- Quarters held
- 12
- Since Q2 2021
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q4 2025 | 0 | $0 | 0.0% | −1,512−100.0% | Sold out | Holders |
| Q3 2025 | 1,512 | $34.0K | <0.1% | +1,512 | New | Holders |
| Q2 2025 | 0 | $0 | 0.0% | −97−100.0% | Sold out | Holders |
| Q1 2025 | 97 | $1.00K | <0.1% | −2,967−96.8% | Reduced | Holders |
| Q4 2024 | 3,064 | $81.0K | <0.1% | −8,940−74.5% | Reduced | Holders |
| Q3 2024 | 12,004 | $342.0K | <0.1% | +12,004 | New | Holders |
| Q2 2024 | 0 | $0 | 0.0% | −6−100.0% | Sold out | Holders |
| Q1 2024 | 6 | $0 | 0.0% | +6 | New | Holders |
| Q4 2023 | 0 | $0 | 0.0% | −260−100.0% | Sold out | Holders |
| Q3 2023 | 260 | $4.00K | <0.1% | +260 | New | Holders |
| Q2 2023 | 0 | $0 | 0.0% | −3,138−100.0% | Sold out | Holders |
| Q1 2023 | 3,138 | $71.0K | <0.1% | +3,138 | New | Holders |
| Q4 2022 | 0 | $0 | 0.0% | −8,968−100.0% | Sold out | Holders |
| Q3 2022 | 8,968 | $233.0K | <0.1% | +8,022+848.0% | Added | Holders |
| Q2 2022 | 946 | $20.0K | <0.1% | +946 | New | Holders |
| Q1 2022 | 0 | $0 | 0.0% | −177−100.0% | Sold out | Holders |
| Q4 2021 | 177 | $7.00K | <0.1% | −1,443−89.1% | Reduced | Holders |
| Q3 2021 | 1,620 | $115.0K | <0.1% | 00.0% | Unchanged | Holders |
| Q2 2021 | 1,620 | $118.0K | <0.1% | +1,620 | New | Holders |