Deere has been growing international sales, and its stock has been running rapidly.
OptionMonster's tracking systems detected heavy trading yesterday in the February 100 calls for $0.56 to $0.60 and the February 105 calls for $0.19 to $0.23. In some cases, traders bought one and sold the other to leverage a sprint higher in the next two weeks.
Calls lock in the price where investors can buy shares, so they can generate significant leverage in the event of a rally. It would take quite a move to reach those $100 and $105 strike prices, but yesterday's traders are willing to take that risk.