Najarian buys energy play on M&A speculation

The J. W. McLean offshore drill rig, operated by Transocean Ltd., stands anchored in the Cromarty Firth in Invergorgon, U.K.
Simon Dawson | Bloomberg | Getty Images

CNBC "Halftime Report" trader Jon Najarian scooped up shares of Transocean for his model portfolio after detecting unusual options activity that may signal a deal for the company.

In the past 12 months, shares of the offshore-drilling company have lost more than 45 percent of their value as higher inventories and reduced global demand hit oil prices.

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