Trolling is defined as creating ** on the Internet by starting quarrels or upsetting people by posting inflammatory or off-topic messages in an online community. Basically, a social media troll is someone who purposely says something controversial in order to get a rise out of other users.
so most would agree going into an online share forum and onto the page of a share you don’t own every one or two weeksl to put the company down and tell holders of that share how they are losing money - pretty fits the definition perfectly.