What is the sentiment of this news? Please choose an answer from {strong negative/moderately negative/mildly negative/neutral/mildly positive/moderately positive/strong positive}.

Shares of Amazon.com Inc. AMZN, -5.41% sank 5.2% in midday trading, reversing an earlier intraday gain of as much as 2.1%, to put them in danger of a fifth-straight loss. The stock has tumbled 19.44% over the past five days.
strong negative