$DDD 3D Systems (DDD) Stock Receives Ratings Downgrade Today at Jefferies http://stks.co/g1cqd
### Instruction: What is the sentiment of this news? Please choose an answer from {negative/neutral/positive}
### Input: $DDD 3D Systems (DDD) Stock Receives Ratings Downgrade Today at Jefferies http://stks.co/g1cqd
### Response: negative