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
Daily short-sale volume published by FINRA from its trade-reporting facilities. It measures how many shares were sold short each day as a share of total volume — a daily flow, not the total outstanding short position.
Short Volume
| Date | Short Volume | Short Exempt | Total Volume | Short % |
|---|---|---|---|---|
| 2026-06-09 | 74,679 | 100 | 97,210 | 76.8% |
| 2026-06-08 | 71,913 | 2 | 97,799 | 73.5% |
| 2026-06-05 | 129,963 | 10 | 201,546 | 64.5% |
| 2026-06-04 | 113,541 | 0 | 161,896 | 70.1% |
| 2026-06-03 | 82,327 | 0 | 131,991 | 62.4% |
| 2026-06-02 | 113,868 | 38 | 144,663 | 78.7% |
| 2026-06-01 | 84,174 | 0 | 127,773 | 65.9% |
| 2026-05-29 | 76,375 | 0 | 107,101 | 71.3% |
| 2026-05-28 | 35,169 | 26 | 66,072 | 53.2% |
| 2026-05-27 | 61,842 | 0 | 103,655 | 59.7% |
| 2026-05-26 | 134,737 | 0 | 230,352 | 58.5% |
| 2026-05-22 | 129,066 | 0 | 164,952 | 78.2% |
| 2026-05-21 | 46,563 | 0 | 71,958 | 64.7% |
| 2026-05-20 | 116,846 | 0 | 158,168 | 73.9% |
| 2026-05-19 | 118,351 | 336 | 197,663 | 59.9% |
| 2026-05-18 | 128,340 | 552 | 161,323 | 79.6% |
| 2026-05-15 | 78,192 | 0 | 131,350 | 59.5% |
| 2026-05-14 | 71,915 | 0 | 100,889 | 71.3% |
| 2026-05-13 | 70,159 | 0 | 99,335 | 70.6% |
| 2026-05-12 | 80,444 | 3,194 | 108,437 | 74.2% |
| 2026-05-11 | 140,559 | 4,887 | 206,954 | 67.9% |
| 2026-05-08 | 111,780 | 136 | 168,171 | 66.5% |
| 2026-05-07 | 62,846 | 0 | 91,209 | 68.9% |
| 2026-05-06 | 57,050 | 313 | 75,038 | 76.0% |
| 2026-05-05 | 36,636 | 0 | 84,001 | 43.6% |
| 2026-05-04 | 72,999 | 2 | 135,112 | 54.0% |
| 2026-05-01 | 56,648 | 250 | 142,371 | 39.8% |
| 2026-04-30 | 38,755 | 0 | 71,416 | 54.3% |
| 2026-04-29 | 50,430 | 0 | 77,589 | 65.0% |
| 2026-04-28 | 71,370 | 0 | 110,134 | 64.8% |
| 2026-04-27 | 43,005 | 0 | 68,562 | 62.7% |
| 2026-04-24 | 47,164 | 0 | 70,566 | 66.8% |
| 2026-04-23 | 118,110 | 0 | 155,984 | 75.7% |
| 2026-04-22 | 48,697 | 0 | 68,931 | 70.6% |
| 2026-04-21 | 52,596 | 0 | 92,286 | 57.0% |
| 2026-04-20 | 61,582 | 0 | 88,240 | 69.8% |
| 2026-04-17 | 56,839 | 400 | 103,060 | 55.2% |
| 2026-04-16 | 45,301 | 0 | 61,347 | 73.8% |
| 2026-04-15 | 64,864 | 2 | 107,236 | 60.5% |
| 2026-04-14 | 57,488 | 0 | 104,842 | 54.8% |
| 2026-04-13 | 55,179 | 0 | 85,066 | 64.9% |
| 2026-04-10 | 59,455 | 0 | 90,238 | 65.9% |
| 2026-04-09 | 65,778 | 0 | 105,278 | 62.5% |
| 2026-04-08 | 86,128 | 0 | 134,662 | 64.0% |
| 2026-04-07 | 110,808 | 0 | 165,783 | 66.8% |
| 2026-04-06 | 50,558 | 0 | 89,584 | 56.4% |
Showing 1–46 of 46 days