I know we are getting 1 share Prothena for every 41 shares of Elan held. Does someone know percentage original cost basis retained by issuers shares and percentage of cost basis allocated to spin off shares?
that's a good question, and I thought it was more like 50:1 ratio.
if in a taxable account, you need the exact % of issuers and of prothena. I think cost will be on amount on 12/20?