Frontline has been falling for the last three years, but the bulls took the helm on Friday.
OptionMonster's monitoring systems detected heavy call volume in the oil-tanker company, with some 2,700 of the June 2 contracts purchased against previous open interest of just 205. Premiums started at $0.15 and then doubled to $0.30 as the shares advanced.
Calls lock in the price where investors can buy stock, and they can deliver significant leverage because they're so cheap to buy. Traders often uses them to keep a trade from running away from them while reducing the amount of capital at risk.