Frontline has been falling for the last three years, but the bulls took the helm on Friday.
optionMONSTER's Heat Seeker monitoring system 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.
Long 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. (See our Education section for more on why more investors are using options in their portfolio strategies.)
FRO surged 12 percent to $1.97 on Friday. It fetched more than $35 in April 2010 before a slowing global economy took the wind of out its sails. In recent weeks, however, numbers from China and Europe have surprised to the upside, and sentiment has warmed toward emerging-market stocks. That could be bullish for a transport such as Frontline.
Short interest also stood north of 20 percent in mid-April, which could also squeeze the shares higher.
Total option volume was 16 times greater than average in Friday's session, with calls outnumbering puts by a similar proportion.
(A version of this post appeared on InsideOptions Pro on Friday.)
More From optionMONSTER