Prothena (PRTA) - Cost to borrow shares

Latest borrow fee for Prothena (PRTA) shares on Interactive Brokers: 0.5430% (annualized)

The cost to borrow / borrow fee is an annualized percentage an account is charged when borrowing shares of a stock.
Please note that the borrow fee and available shares to borrow displayed on this page are solely based on information provided by Interactive Brokers.

Prothena (PRTA) - cost to borrow in the last 7 days chart

Prothena (PRTA) - number of shares available to borrow in the last 7 days

Prothena (PRTA) - cost to borrow from 2025 to 2023

Prothena (PRTA) - number of shares available to borrow from 2025 to 2023

Cost to borrow for shares of similar companies or competitors

Company	Cost to borrow (% year)	Shares available	Country
Alkermes ALKS	0.25%	1.6 M	🇮🇪 Ireland
Alnylam Pharmaceuticals ALNY	0.3645%	1.9 M	🇺🇸 USA
Amarin Corporation AMRN	0.4091%	10 M	🇮🇪 Ireland