Welcome to

O’Byrne and Grassick

International Bloodstock Agency

O’Byrne and Grassick International Bloodstock Agency is owned by world renowned bloodstock agent Demi O’Byrne and Seán Grassick.

They attend all major Flat and National Hunt sales in Europe, USA and Australia. O’Byrne and Grassick operate their business to the highest integrity and together bring a successful blend of youth and experience.

Services offered

Yearling Purchase

Demi and Seán attend all the major yearling sales in Europe, USA and Australia and are available to purchase yearlings for a range of clients with varying sizes of budget.

Horses in Training

Horses in training can be purchased privately or at public auction to race across the globe.

Breeding Stock

Fillies and broodmares can be sourced privately or at public auction in Europe, USA or Australia.

Bloodstock Management

Clients can be be advised on the management of their bloodstock portfolio, along with regular farm visits to assess the development of their stock.