On CNBC's "Fast Money Halftime Report," Pete Najarian said that he bought calls in Intel Corporation (NASDAQ:INTC) on Tuesday.

He noticed during the first half of the session that traders bought 34,000 contracts of the June 25, $62 calls and 5,000 contracts of the June 25, $60 calls. The company has a big conference coming up and traders are positioning themselves pretty aggressively.

Najarian has also noticed some activity in Centene Corp (NYSE:CNC). When the stock was trading around $69, traders were buying the June $72.50 calls. Around 5,000 contracts were traded for 55 cents. Traders have also sold some puts so the whole trade looks very bullish to Najarian.