As a reminder, the Indicative Sporting Value (ISV) of a unit of a memorabilia is calculated using an algorithm which takes into account the prizes of the races in which the horse participates, as well as the horse's performance (winnings, places, race category and regularity).
Increases in value are generally observed when a horse finishes a race and obtains gains, and when it enters better-funded races.
n.b: we have capped certain sponsored races, such as the ARQANA series races whose prize money does not reflect sporting reality.