NEW YORK--(BUSINESS WIRE)--Blackstone (NYSE:BX) today announced an investment in Market Data Insights LLC (MDI), a services firm that specializes in providing market data management solutions to financial services firms. MDI’s business model for the delivery of market data management solutions addresses many of the shortcomings of traditional approaches. MDI’s solutions are delivered by people with a deep understanding of market data products and client needs. By requiring short term commitment