BlockRock (BLK) reported a 10% increase in profits for the first quarter of 2013 on gains from renewed investor interest in the stock market. 

Investors put $39.4 billion of new funds into BlackRock products, with the majority of the money going into stock-related investments. 

Along with rising markets, BlackRock increased assets under management by 7% from the same time last year and by 4% from the fourth quarter of 2012.