What is the sentiment of the input news from financial perspective?
Options: negative, positive

After the release of the company's preliminary fourth-quarter results with an update on first-quarter guidance on Thursday, Amazon.com Inc. AMZN stock surged 13.54% on Friday to close at $3152.79. Let's examine the updated perspectives and sentiments of various sell-side firms below: -KeyBanc Maintains Overweight Rating, With $4,000 Price Target
positive