Nysos

Nysos is a bay colt bred in Kentucky by Susie Atkins. His sire is Nyquist, winner of the 2016 Kentucky Derby and his dam is Zetta Z who was sired by Bernardini never started in an event. In 2024 Coolmore Stud bought Zetta Z for $2 million during the Fasig-Tipton Kentucky Winter Mixed Sale. Zetta Z's dam, Seresa's Spirit was also unraced. The third dam is Unbridled Elaine, who took the Pocahontas Stakes at two-year-old, and won the Grade 1 Breeders' Cup Distaff as a three-tear-old.

Nysos was named after a demigod In Greek mythology, who lived on Mount Nysa, identified as modern day Mount Kithairon.

Nysos went through the auction sales ring three times before starting for his current owners Charles and Susan Chu's Baoma Corporation. At the Keeneland Breeding Stock 2021 November Sale as a weanling Nysos was sold to Cypress Creek for $130,000. The following year at the Fasig-Tipton Kentucky Fall Yearling sale Nysos was sold for $150,000 to Best Of Luck Farm. He was then purchased as a two-year-old at the Ocala Breeders Sale for $550,000.

Nysos is trained by U.S. Racing Hall of Fame Bob Baffert.

In late 2025 after Nysos won the Grade 1 Breeders' Cup Dirt Mile, Coolmore Stud became registered lessee owners with Baoma.