The Gates Notes, LLC An investment adviser that traces its origins to Warren Buffett likely netted a nearly $900 million gain on Wayfair in under three months. Ruane, Cunniff & Goldfarb bolstered its position in the online home-goods retailer to 5.2 million shares as of March 31, and the Sequoia Fund it manages also built a stake of 1.9 million shares. Wayfair’s stock price has soared 230% since then, lifting the combined value of those investments from about $380 million to $1.25 billion. Bill Ruane founded Sequoia Fund in 1970 at Buffett’s request, as the famed investor was closing his