(Reuters) – Dutch trading services provider Flow Traders said on Friday it expected fixed operating expenses to grow about 25% this year, as its total compensation mix shifts towards higher levels of base compensation and a strengthening U.S. dollar. The group, best known for market making in exchange-traded products (ETPs), also announced a new share buyback programme of up to 25 million euros ($25.47 million) over 12 months. ($1=0.9817 euros) (Reporting by Juliette Portala and Lina Golovnya; Editing by Izabela Niemec and Clarence Fernandez)