Desi MO (McClellans Oscillator For NSE) – 1st JUN 2020 June 1, 2020June 1, 2020 R M Blog MO at 68 Declining volumes dip below 5% Indiavix Declining Volumes NSE – McClellan Summation index (MSI) MSI is a summation of MO, hence its absolute value depends upon the beginning date of summation.