TLREF Rules are reviewed and updated by the TLREF Committee in order to:

• calculate TLREF, with the available data, at 15:30 and announce via BISTECH Data Dissemination System at 15:50 and via Borsa Istanbul’s website after 16:00, on trading days,
• define the rules to calculate TLREF in case of Insufficiency of Input Data,
• include the Istanbul Clearing, Settlement and Custody Bank Inc. among the institutions represented in the TLREF Committee.

 New TLREF Rules will be effective on September 16, 2019.