PRTA
Prothena Corp Public Ltd CoCompany with tickers: PRTA
CIK
1559053
CUSIP
G72800108
Shares Outstanding
52,353,237
13F Activity (30d)
112 filings
109 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 | 414,396 | 197,957 | 612,353 | 31.3% |
| 2026-04-27 | 332,213 | 201,714 | 533,927 | 29.5% |
| 2026-04-20 | 328,879 | 220,909 | 549,788 | 35.6% |
| 2026-04-13 | 333,853 | 229,096 | 562,949 | 30.3% |
| 2026-04-06 | 362,812 | 292,341 | 655,153 | 31.8% |
| 2026-03-30 | 368,671 | 280,145 | 648,816 | 38.1% |
| 2026-03-23 | 452,828 | 236,435 | 689,263 | 28.1% |
| 2026-03-16 | 517,013 | 584,778 | 1,101,791 | 32.9% |
Showing 1–8 of 8 weeks