In a sign of strong demand, NYMEX, the world's leading physical commodity-based futures exchange and clearinghouse, increased the proposed range on its highly anticipated IPO by 11% to $54 to $57 on Tuesday morning. The company also increased the offering size to 6.5 million shares from 6 million, with the additional shares company from the firm. The deal, which is being underwritten by JP Morgan and Merrill Lynch, is expected to price on Thursday evening.
