PROS Holdings Inc., a Houston, Texas-based provider of pricing and revenue optimization software, raised $75.1 million in its IPO. The company priced 6.825 million common shares at $11 per share ($10-$12 range), for an initial valuation of around $284 million. It will trade on the NYSE under ticker symbol PRO, while JPMorgan and Deutsche Bank Securities serving as co-lead underwriters. Shareholders include TA Associates (35.6% pre-IPO stake) and JMI Equity (11.2%).