Shares of Aerojet Rocketdyne Holdings Inc. soared more than 12% Tuesday after the maker of rocket motors landed two contracts with an estimated aggregate value of $1.4 billion. We first recommended Aerojet at $11.40 a share back in February 2013, when it was still known as GenCorp Inc. That was just months after GenCorp had inked a $550 million deal to buy the Pratt & Whitney Rocketdyne unit from United Technologies Corp. .