Just ran the backtest back to 1990 for the MOC system. Current maxDD been seen several times, mainly in the Asian Currency Crisis of the late 90’s
27 Oct 1997 – single day was -51% (fuck me) but recovered immediately on the following day
31 Aug 1998 – 3 days to -52% but recovered 13 Jan 1999, about 4.5 months
19 Apr 1999 – single day was -45.8% but recovered 5 Aug 1999, about 3.5 months