A bullish trend was noted due to higher than normal Call volume yesterday:

"NEW YORK (AVAFIN) -- Options traders were heavily trading call contracts during the last trading session establishing a new 3-month call volume record. A total of 3,030 put and 11,697 calls were traded where call contracts outnumbered puts 3.9:1, yielding a 0.26 ratio.
Put/Call ratio is often used to measure investor sentiment, the ratio serves as a predictor of investor behavior. A high put/call ratio suggests that the investor sentiment is bearish and that investors expect the underlying stock to decrease in value. In contrast, a low put/call ratio suggests that the investor sentiment is bullish and that the underlying stock is expected to increase in value. Unusual volume provides reliable clues that the stock is expected to make a move.
Shares of InterOil Corporation closed at $67.06, up $1.77 (+2.71%) in the last trading session. Today's volume of 343M shares is less than the average volume of 807M shares. IOC is trading below the 50 day moving average and lower than the 200 day moving average. The stock's 52 week low is $63.25 and 52 week high is $106.44."