Men looks up at an electronic screen displaying stock figures at the Bombay Stock Exchange (BSE) in Mumbai, India.

After turning their back on domestic equities for five years, Indian retail investors have finally begun to dip their toes back into the market, a trend that could help sustain the bumper rally seen over the past year, say strategists.

"Retail investor could be the next big thing," Aditya Narian and Jitender Tokas, analysts at Citigroup Global Markets wrote in a note.