$FCX - Freeport upgraded as Credit Suisse sees big buying opportunity https://t.co/d4TGqrNi7Y
### Instruction: What is the sentiment of this news? Please choose an answer from {negative/neutral/positive}
### Input: $FCX - Freeport upgraded as Credit Suisse sees big buying opportunity https://t.co/d4TGqrNi7Y
### Response: positive