The risk model changes implied position in the SP500 futures on market close (locally) on 1 April 2024, from 0.0 to -0.5.
Implied risk positions are from then on:
US (SP500): -0.5
EU (Estoxx50): -1.0
Japan (Nikkei225): 1.0
Fixed Income (US 10y TN): 1.0