GBST Holdings Limited provided an earnings update for fiscal 2017 based on current expectations. The company expects net earnings before interest, taxation, depreciation and amortisation (EBITDA) of around $8.0 million for the first half of fiscal 2017, which remains subject to finalisation of the accounts and external audit review. Due to an anticipated reduction in services revenue, GBST advises that it expects EBITDA in the region of $12.0 million for the full year, compared to EBITDA of $17.2 million in the prior corresponding period.