As per the Securities market risk parameters methodology, on 29.04.2020, 15-16 (MSK) the upper bound of the price band (up to 0.00576) and initial margins (up to 87.5 %) for the security TGKB were changed. New values are available here
FTSE Mondo Visione Exchanges Index:
Moscow Exchange: Risk Parameters Change For The Security TGKB
Date 29/04/2020