New Delhi, April 20 -- Opportunistic investors who traded for only a single day constituted almost a whopping one-fourth of the 35.8 million active retail investors on the National Stock Exchange (NSE) last fiscal year, data in the bourse's monthly Market Pulse issue showed.

Even when aggregated, investors trading up to 10 days constituted 69% of the total active retail base. This reveals a "highly skewed, long-tailed pattern, where bulk of investors trade only a handful of days in a year, while a very small proportion participates regularly," according to NSE's Economic Policy & Research Department (NSE EPR), which prepared the data.

In absolute terms, those trading for just one day stood at 8.43 million investors, comprising 24% of th...