The risk model changes implied position in the Nikkei225 index futures on market close 3 April 2023, from 0.0 to 1.0.
Implied risk positions are from then on:
US (SP500): -1.0
EU (Estoxx50): -1.0
Japan (Nikkei225): +1.0
Fixed Income (US 10y TN): +1.0