Nanosphere Inc. (NASDAQ: NSPH) stock jumped 69.38 percent (51 cents) to close at $1.29 Monday after Luminex Corp. (NASDAQ: LMNX) agreed to buy the company for roughly $58 million in cash ($1.35 a share). Luminex shares went up too, but just by 1.53 percent (30 cents) to $19.93.