5 Reddit Stocks that Tripled in 2021

3. Prothena Corporation plc (NASDAQ:PRTA)

Number of Hedge Fund Holders: 25

Year-To-Date Gain: 309%   

Prothena Corporation plc (NASDAQ:PRTA) is a biotech firm that develops and markets treatments for life-threatening diseases. Earlier this year, the company sold off the PRX-004 drug pipeline to Danish pharma giant Novo Nordisk in a deal worth more than $1 billion. 

JMP Securities analyst Gobind Singh recently initiated coverage of Prothena Corporation plc (NASDAQ:PRTA) stock with an Outperform rating and a price target of $77, noting the market potential of pipeline drugs of the firm. 

Among the hedge funds being tracked by Insider Monkey, California-based firm EcoR1 Capital is a leading shareholder in Prothena Corporation plc (NASDAQ:PRTA) with 11 million shares worth more than $803 million.