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

Cathie Wood's money managing firm Ark Investment Management on Thursday sold more shares in Netflix Inc (NASDAQ: NTFLX) just ahead of the streaming video-on-demand company issuing quartely guidance below estimates and sending its shares down in the after-hours session. Ark Invest sold 2,958 shares — estimated to be worth $1.5 million based on the latest closing price — in Netflix on Thursday.
negative