Nimble Storage Inc. (NYSE: NMBL ) made its stock market debut on Friday and closed up nearly 62 percent to $33.93 at the close in New York, valuing the San Jose , California-based company at $2.38 billion. Nimble’s flash technology is used to bolster data-center storage, providing more speed and capacity while keeping prices down. Revenue more than doubled in the third quarter to $33.4 million.