Sharing Costs, Spreading Risks - Racehorse syndicates have been around for a long time, but it’s only in the last 20 years that sport horse syndicates have become more common. In the horse world, a syndicate is generally a group of people who pool their funds to invest in a horse together and share the horse’s annual costs. Everyone who “buys in” is a shareholder and owns a portion of the horse for a set period of time, or until the horse is resyndicated or sold.