Sarepta Therapeutics has been holding its ground for months, and now the bulls are looking for the next leg higher.
OptionMonster's tracking systems detected the purchase of about 2,500 March 25 calls, with the largest block pricing for $4. A short while later, a similar number of April 30 calls were bought for $3.20 to $4.70. There was barely any open interest at either strike, indicating that new money was put to work on the long side.
Calls lock in the price where investors can buy shares, so they can generate significant leverage in the event of a rally. But they're also susceptible to losing most or all of their value if the stock doesn't move.