CSTL
Castle Biosciences IncCompany with tickers: CSTL
CIK
1447362
CUSIP
14843C105
Shares Outstanding
30,329,952
13F Activity (30d)
108 filings
104 filers
Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.
Off-Exchange Volume History
| Week Start | ATS Volume | Non-ATS OTC Volume | Total Off-Exchange | % of FINRA Weekly Volume |
|---|---|---|---|---|
| 2026-05-04 | 970,845 | 625,748 | 1,596,593 | 43.0% |
| 2026-04-27 | 315,157 | 147,729 | 462,886 | 39.8% |
| 2026-04-20 | 332,864 | 219,566 | 552,430 | 36.8% |
| 2026-04-13 | 240,223 | 119,040 | 359,263 | 36.6% |
| 2026-04-06 | 303,466 | 160,466 | 463,932 | 29.9% |
| 2026-03-30 | 345,424 | 230,597 | 576,021 | 56.3% |
| 2026-03-23 | 379,449 | 184,102 | 563,551 | 37.1% |
| 2026-03-16 | 364,577 | 274,820 | 639,397 | 40.7% |
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