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 |
|---|---|---|---|---|
| 2025-06-16 | 1,909,363 | 6,341,228 | 8,250,591 | 59.3% |
| 2025-06-23 | 1,949,598 | 1,925,688 | 3,875,286 | 38.3% |
| 2025-06-30 | 886,504 | 642,225 | 1,528,729 | 34.8% |
| 2025-07-07 | 844,064 | 719,405 | 1,563,469 | 39.2% |
| 2025-07-14 | 604,506 | 777,002 | 1,381,508 | 37.0% |
| 2025-07-21 | 588,665 | 1,026,339 | 1,615,004 | 42.3% |
| 2025-07-28 | 979,597 | 1,089,352 | 2,068,949 | 44.7% |
| 2025-08-04 | 1,296,881 | 2,347,956 | 3,644,837 | 47.7% |
| 2025-08-11 | 1,142,001 | 955,143 | 2,097,144 | 39.0% |
| 2025-08-18 | 1,405,193 | 679,716 | 2,084,909 | 44.0% |
| 2025-08-25 | 1,211,886 | 1,075,540 | 2,287,426 | 38.8% |
| 2025-09-01 | 1,143,869 | 899,114 | 2,042,983 | 47.0% |
| 2025-09-08 | 839,396 | 502,398 | 1,341,794 | 40.4% |
| 2025-09-15 | 574,749 | 564,492 | 1,139,241 | 38.6% |
| 2025-09-22 | 1,002,779 | 774,758 | 1,777,537 | 41.2% |
| 2025-09-29 | 1,021,510 | 768,069 | 1,789,579 | 39.6% |
| 2025-10-06 | 837,697 | 462,368 | 1,300,065 | 36.5% |
| 2025-10-13 | 668,817 | 470,676 | 1,139,493 | 34.5% |
| 2025-10-20 | 457,735 | 260,385 | 718,120 | 36.1% |
| 2025-10-27 | 687,034 | 355,917 | 1,042,951 | 36.8% |
| 2025-11-03 | 849,918 | 377,778 | 1,227,696 | 38.0% |
| 2025-11-10 | 893,281 | 420,922 | 1,314,203 | 41.5% |
| 2025-11-17 | 724,942 | 332,701 | 1,057,643 | 39.8% |
| 2025-11-24 | 606,083 | 162,314 | 768,397 | 37.8% |
| 2025-12-01 | 899,420 | 509,143 | 1,408,563 | 38.7% |
| 2025-12-08 | 748,944 | 529,279 | 1,278,223 | 39.6% |
| 2025-12-15 | 833,466 | 839,165 | 1,672,631 | 25.1% |
| 2025-12-22 | 527,891 | 266,701 | 794,592 | 38.7% |
| 2025-12-29 | 377,206 | 304,677 | 681,883 | 36.6% |
| 2026-01-05 | 473,765 | 319,009 | 792,774 | 32.7% |
| 2026-01-12 | 578,391 | 509,544 | 1,087,935 | 38.6% |
| 2026-01-19 | 596,262 | 261,452 | 857,714 | 35.8% |
| 2026-01-26 | 395,974 | 222,825 | 618,799 | 30.4% |
| 2026-02-02 | 422,563 | 293,794 | 716,357 | 30.0% |
| 2026-02-09 | 306,768 | 225,824 | 532,592 | 32.9% |
| 2026-02-16 | 447,838 | 231,572 | 679,410 | 37.4% |
| 2026-02-23 | 492,279 | 235,853 | 728,132 | 33.1% |
| 2026-03-02 | 550,062 | 289,706 | 839,768 | 27.4% |
| 2026-03-09 | 632,179 | 329,348 | 961,527 | 29.3% |
| 2026-03-16 | 517,013 | 584,778 | 1,101,791 | 32.9% |
| 2026-03-23 | 452,828 | 236,435 | 689,263 | 28.1% |
| 2026-03-30 | 368,671 | 280,145 | 648,816 | 38.1% |
| 2026-04-06 | 362,812 | 292,341 | 655,153 | 31.8% |
| 2026-04-13 | 333,853 | 229,096 | 562,949 | 30.3% |
| 2026-04-20 | 328,879 | 220,909 | 549,788 | 35.6% |
| 2026-04-27 | 332,213 | 201,714 | 533,927 | 29.5% |
| 2026-05-04 | 414,396 | 197,957 | 612,353 | 31.3% |
Showing 1–47 of 47 weeks