Historic Stock Lookup

Adjusted historic prices for the week of May 21, 2018
Date Open High Low Close Volume
May 21, 2018 14.26 15.19 14.17 14.65 1,123,862
May 22, 2018 14.65 14.88 14.41 14.64 805,146
May 23, 2018 14.65 14.86 14.20 14.32 477,200
May 24, 2018 13.81 15.23 13.70 14.86 615,492
May 25, 2018 14.83 15.15 14.48 14.62 403,893

Year End Stock Prices

Year end PRTA stock price

The historical stock information provided is for informational purposes only and is not intended for trading purposes. The historical stock information is provided by Mergent, a third party service, and Prothena Corporation plc does not maintain or provide information directly to this service. Prices display split-adjusted cost basis per share on that date.