Multiple large blocks were bought in the October 17 calls for $0.20 to $0.25, according to OptionMonster's real-time tracking systems. More than 17,000 of the calls traded against previous positioning of just 3,713 contracts, pushing CY's total option volume to 8 times greater than its daily average.
These calls will be profitable if the stock gains at least 8.5 percent by the time they expire on Oct. 21. The company will report earnings before the bell a day earlier, on Oct. 20.
Total calls at all strikes in the name outnumbered puts by more than 60 to 1, another reflection of bullish trader sentiment.
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—Najarian has no positions in CY.
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Pete Najarian is a professional investor, CNBC contributor, regular co-host of CNBC's "Fast Money" and co-founder of OptionMonster.com.