Simplex Trading, LLC Prothena Corp Public LTD CO Transaction History

Simplex Trading, LLC

  • $195 Billion
  • Q3 2025

A detailed history of Simplex Trading, LLC transactions in Prothena Corp Public LTD CO stock. As of the latest transaction made, Simplex Trading, LLC holds 42,044 shares of PRTA stock, worth $430,951. This represents 0.0% of its overall portfolio holdings.

Number of Shares
42,044
Previous 43,264 2.82%
Holding current value
$430,951
Previous $262,000 56.49%
% of portfolio
0.0%
Previous 0.0%

Shares

21 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Nov 12, 2025
SELL
$6.22 - $9.76 $7,588 - $11,907
-1,220 Reduced 2.82%
42,044 $410,000
Q2 2025

Aug 05, 2025
BUY
$4.58 - $12.14 $198,149 - $525,224
43,264 New
43,264 $262,000
Q3 2024

Nov 08, 2024
BUY
$16.73 - $24.79 $62,068 - $91,970
3,710 Added 163.65%
5,977 $99,000
Q2 2024

Jul 25, 2024
SELL
$19.54 - $26.15 $96,742 - $129,468
-4,951 Reduced 68.59%
2,267 $46,000
Q1 2024

Apr 25, 2024
BUY
$24.75 - $40.66 $178,645 - $293,483
7,218 New
7,218 $178,000
Q3 2022

Nov 04, 2022
BUY
$25.16 - $60.63 $514,144 - $1.24 Million
20,435 Added 632.47%
23,666 $1.43 Million
Q2 2022

Aug 03, 2022
BUY
$22.73 - $39.98 $72,031 - $126,696
3,169 Added 5111.29%
3,231 $87,000
Q3 2021

Oct 28, 2021
SELL
$48.2 - $78.89 $24,100 - $39,445
-500 Reduced 88.97%
62 $3,000
Q2 2021

Aug 12, 2021
SELL
$21.63 - $57.65 $176,825 - $471,288
-8,175 Reduced 93.57%
562 $28,000
Q1 2021

Apr 26, 2021
SELL
$11.0 - $28.24 $1,694 - $4,348
-154 Reduced 1.73%
8,737 $219,000
Q4 2020

Feb 02, 2021
BUY
$10.12 - $13.94 $20,533 - $28,284
2,029 Added 29.57%
8,891 $106,000
Q3 2020

Oct 14, 2020
BUY
$9.93 - $13.47 $55,220 - $74,906
5,561 Added 427.44%
6,862 $68,000
Q2 2020

Jul 13, 2020
SELL
$9.56 - $12.51 $30,362 - $39,731
-3,176 Reduced 70.94%
1,301 $13,000
Q1 2020

Apr 29, 2020
SELL
$7.54 - $15.77 $40,693 - $85,110
-5,397 Reduced 54.66%
4,477 $47,000
Q4 2019

Feb 05, 2020
SELL
$7.48 - $17.01 $55,711 - $126,690
-7,448 Reduced 43.0%
9,874 $156,000
Q3 2019

Oct 15, 2019
SELL
$6.89 - $10.45 $7,902 - $11,986
-1,147 Reduced 6.21%
17,322 $135,000
Q2 2019

Jul 26, 2019
BUY
$8.85 - $12.49 $161,937 - $228,542
18,298 Added 10700.58%
18,469 $195,000
Q1 2019

Apr 18, 2019
SELL
$10.32 - $14.49 $215,337 - $302,348
-20,866 Reduced 99.19%
171 $0
Q4 2018

Jan 16, 2019
BUY
$8.73 - $13.74 $7,630 - $12,008
874 Added 4.33%
21,037 $216,000
Q3 2018

Oct 23, 2018
BUY
$12.7 - $15.79 $239,941 - $298,320
18,893 Added 1487.64%
20,163 $263,000
Q2 2018

Jul 30, 2018
BUY
$10.99 - $44.21 $13,957 - $56,146
1,270 New
1,270 $18,000

Others Institutions Holding PRTA

# of Institutions
218
Shares Held
35M
Call Options Held
656K
Put Options Held
1.12M
View Full List

About PROTHENA CORP PUBLIC LTD CO

PRTA Quotes by TradingView
  • Ticker PRTA
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Biotechnology
  • Shares Outstandng 46,922,800
  • Market Cap $481M
  • Description
  • Prothena Corporation plc, a late-stage clinical company, focuses on discovery and development of novel therapies for life-threatening diseases in the United States. The company is involved in developing Birtamimab, an investigational humanized antibody that is in Phase III clinical trial for the treatment of AL amyloidosis; Prasinezumab, a human...
More about PRTA
Track This Portfolio

Track Simplex Trading, LLC Portfolio

Follow Simplex Trading, LLC and customize your updates to receive the information that matters most to you.

Portfolio Update

Get notified when there are updates to the investment portfolio of Simplex Trading, LLC, based on Form 13F filings with the SEC.

News

Stay updated on Simplex Trading, LLC with notifications on news.

Choose your preferred platform and Sign Up 👇 Telegram Email