Monarchos was retired to Claiborne Farm, where his initial stud fee was $25,000. His most successful foals are Informed Decision, a winner of the Breeders' Cup Filly and Mare Sprint and a multiple graded stakes winner of $2.2 million, and Win Willy, winner of the Rebel Stakes and one-time Kentucky Derby contender, winner of over $1 million. Other stakes winners include Japanese stakes winner Mr. Monarchos ($775k), multiple stakes winner Stormin Monarcho ($487k), multiple stakes winner Bingham, stakes winners Riley's Monarch and Stones River, Aces Star (Champion 2yo colt in Scandinavia) and others.