Authentic Brands Group will look to expand Boardriders branded shop-in-shops, retail stores, e-commerce and wholesale distribution, as well as establish an online marketplace, after finalising its deal to buy the parent of Billabong and Quiksilver.

ABG chief executive and founder Jamie Salter overnight penned a definitive agreement to purchase Boardriders, owned by Oaktree Capital Management, which values the group at $US1.25 billion ($1.88 billion). The transaction was flagged a week ago after a prolonged sale process.