LEXINGTON, Ky. - Jamie LaMonica, co-owner of Empire Stud in New York, and John Stuart of Bluegrass Thoroughbred Services used to bump into each other all the time on stallion deals, either seeking each other out as partners or bidding against each other for the same horse. Now they've joined forces in a new stallion-only brokerage called The Stallion Company, which opened its headquarters this month in downtown Lexington.