Calls locks in the price where holders can buy shares in the company, so they can generate significant leverage in the event of a rally. But these options will expire worthless if no move occurs.
NRG shares rose 0.61 percent to $23.09 yesterday and is up 36 percent in the last three months. The stock began rallying from long-term lows in late June, then accelerated the next month after announcing that it would merge with Genon Energy to lower costs.
The company continues to trade for less than book value, which could make some investors think that it’s still cheap.
Overall option volume was 5 times greater than average in the session, according to our data systems. Calls outnumbered puts by a bullish 20-to-1 ratio.
—By CNBC Contributor David Russell
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David Russell is a reporter and writer for OptionMonster. Russell has no positions in NRG.