Traders apparently expect Express Scripts to keep its momentum into early next year.
OptionMonster's tracking systems detected the purchase of 2,000 January 70 calls for $2.95 and the sale of an equal number of January 60 calls for $8.75. Volume was below open interest in the 60s, which suggests that an existing position was closed and rolled to the higher strike.
These calls lock in the price where shares can be purchased in the provider of pharmacy benefits. Investors use them for cheap upside exposure, leveraging small moves and managing risk in the process.