Time to uninstall Spotify and stop feeding the monster. Try Grooveshark instead, and lose those annoying ads at the same time.
According to newspaper Computer Sweden, which has got hold of documents that Spotify send to the companies registration office in Luxembourg, the record companies bought the shares for 100,000 kronor (€9.700, $13.900).
The record labels are: Sony BMG (5,8 percent), Universal Music (4,8 percent), Warner Music (3,8 percent) and EMI (1,9 percent). Also Merlin holds a small stake.
(*) At the very least I think they should provide some sort of record label filter, so the users could choose to exclude artists from certain labels, thus minimizing their income.