PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 1,927 Value ($000) $18 Avg Close $10.18 Range $9.07 - $11.69
Q3 2025
Shares 42,044 Value ($000) $0 Avg Close $7.69 Range $5.96 - $9.85
Q2 2025
Shares 43,264 Value ($000) $0 Avg Close $7.50 Range $4.32 - $12.45
Q3 2024
Shares 5,977 Value ($000) $0 Avg Close $21.50 Range $15.52 - $25.42
Q2 2024
Shares 2,267 Value ($000) $0 Avg Close $21.64 Range $18.69 - $26.36
Q1 2024
Shares 7,218 Value ($000) $0 Avg Close $29.75 Range $24.25 - $41.55
Q3 2022
Shares 23,666 Value ($000) $1,434 Avg Close $31.61 Range $25.02 - $64.00
Q2 2022
Shares 3,231 Value ($000) $87 Avg Close $29.25 Range $21.06 - $40.31
Q3 2021
Shares 62 Value ($000) $3 Avg Close $62.11 Range $45.09 - $79.75
Q2 2021
Shares 562 Value ($000) $28 Avg Close $31.20 Range $21.30 - $59.74
Q1 2021
Shares 8,737 Value ($000) $219 Avg Close $18.81 Range $10.72 - $28.66
Q4 2020
Shares 8,891 Value ($000) $106 Avg Close $11.83 Range $9.86 - $14.14
Q3 2020
Shares 6,862 Value ($000) $68 Avg Close $12.03 Range $9.67 - $13.78
Q2 2020
Shares 1,301 Value ($000) $13 Avg Close $11.11 Range $9.25 - $12.98
Q1 2020
Shares 4,477 Value ($000) $47 Avg Close $12.11 Range $7.10 - $16.05
Q4 2019
Shares 9,874 Value ($000) $156 Avg Close $10.72 Range $7.40 - $17.63
Q3 2019
Shares 17,322 Value ($000) $135 Avg Close $8.88 Range $6.71 - $10.70
Q2 2019
Shares 18,469 Value ($000) $195 Avg Close $10.27 Range $8.67 - $12.54
Q1 2019
Shares 171 Value ($000) $2 Avg Close $12.49 Range $9.97 - $14.77
Q4 2018
Shares 21,037 Value ($000) $216 Avg Close $11.89 Range $8.63 - $13.83
Q3 2018
Shares 20,163 Value ($000) $263 Avg Close $14.44 Range $12.23 - $15.91
Q2 2018
Shares 1,270 Value ($000) $18 Avg Close $19.75 Range $10.43 - $44.75
Q2 2017
Shares 500 Value ($000) $27 Avg Close $53.29 Range $48.23 - $59.10
Q1 2017
Shares 1,951 Value ($000) $108 Avg Close $52.54 Range $45.13 - $63.14
Q4 2016
Shares 3,436 Value ($000) $169 Avg Close $55.18 Range $40.58 - $68.18
Q4 2015
Shares 15,147 Value ($000) $1,031 Avg Close $60.32 Range $40.47 - $76.42
Q3 2015
Shares 8,607 Value ($000) $390 Avg Close $58.24 Range $42.20 - $70.52
Q2 2015
Shares 4,055 Value ($000) $213 Avg Close $39.47 Range $30.14 - $55.97
Q1 2015
Shares 9,060 Value ($000) $345 Avg Close $25.65 Range $18.76 - $45.00
Q4 2014
Shares 8,555 Value ($000) $178 Avg Close $20.87 Range $17.00 - $24.67