As previously detailed beforehand, Amazon's 1st quarter would be the worst in its history. Sure enough, it was, and the stock plunged 16% the following day. While revenue came in as expected, the market was spooked by lower operating income, margins and tepid guidance.
### Instruction: What is the sentiment of this news? Please choose an answer from {negative/neutral/positive}
### Input: As previously detailed beforehand, Amazon's 1st quarter would be the worst in its history. Sure enough, it was, and the stock plunged 16% the following day. While revenue came in as expected, the market was spooked by lower operating income, margins and tepid guidance.
### Response: strong negative