Investors may own a piece of Facebook and not even know it. A fair number of mutual fund...

|By:, SA News Editor

Investors may own a piece of Facebook and not even know it. A fair number of mutual fund companies hold pre-IPO shares in Facebook, although for most the stake is small. The notable exception is T. Rowe Price Associates (TROW -0.5%) as an owner of 5% of Facebook with shares distributed among 19 different funds. Facebook's share price will have the biggest impact on the T. Rowe Price Media and Telecommunications Fund (PRMTX) - since it holds the highest percent of its holdings in FB.