Prothena (PRTA) - Cost to borrow

Latest borrow fee for Prothena (PRTA) shares on Interactive Brokers: 0.4496% (annualized)

1200000

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 2026 to 2023

Prothena (PRTA) - number of shares available to borrow from 2026 to 2023

Cost to borrow for shares of similar companies or competitors

Company	Cost to borrow (% year)	Shares available	Country
Amarin Corporation AMRN	0.4081%	1.7 M	🇮🇪 Ireland
Alnylam Pharmaceuticals ALNY	0.4947%	1.2 M	🇺🇸 USA
Alkermes ALKS	0.3342%	1 M	🇮🇪 Ireland

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Cost to borrow PRTA shares - Prothena

Latest borrow fee for Prothena (PRTA) shares on Interactive Brokers: 0.4496% (annualized)