Categorize the input news's emotional tone into one of three groups.
Options: negative, positive

Netflix rose handily in after-hours trading Wednesday following news that Bill Ackman's Pershing Square Capital has acquired more than 3.1 million shares to become a top-20 stockholder. He bought on a big dip. The streamer's stock has been killed since its fourth-quarter earnings report last week, and amid a series of broad market selloffs tied...
positive