Andreessen, co-founder and partner of Andreessen Horowitz, speaks during the panel discussion at the Milken Institute Global Conference in Beverly Hills, CaliforniaFacebook Inc director Marc Andreessen's project-capital firm bought a 3rd of its stake on the planet's No. 1 on-line social network, in step with a latest regulatory submitting. Andreessen Horowitz bought 2.28 million shares on November 6 at about $forty nine to $50 a share, consistent with a submitting with the U.S. Securities and Alternate Commission on Friday. It nonetheless holds four.fifty seven million shares in Fb. Andreessen Horowitz spokeswoman Margit Wennmachers mentioned on Sunday that the agency's investment thesis was once a success.