which activist investor generates the largest share price gains at the outset 
it is difficult to know for sure which activist investors have been the more successful dollar for dollar and what other factors may cause particular stocks to rise in addition to an activist taking on a stake but we can look to sec disclosures and public statements made by these investors elliott investment management for one claims that its investments receive an average rise of 8 in the shares of the target company on the day the firm made its stake public according to elliot its activist engagements have increased the market values of the targeted companies by an aggregate of more 30 billion 24who are the biggest activist investors the largest activist shareholders by assets under management aum as of q1 2023 are listed in the table below led by new york city based third point partners 25the bottom line