Luminate (formerly Nielsen SoundScan, Nielsen Music Products, and MRC Data) is a provider of music sales data. Established by Mike Fine and Mike Shalett in 1991, data is collected weekly and made available every Sunday (for albums sales) and every Monday (for songs sales) to subscribers, which include record companies, publishing firms, music retailers, independent promoters, film and TV companies, and artist managers. It is the source of sales information for the Billboard music charts. It is owned by PMRC, a joint venture between Eldridge Industries (publisher of Billboard) and Penske Media Corporation.