Paytm-owner One97 Communications, a digital firm, which opened its initial public offering (IPO) for subscription on November 8, saw a retail subscription of 78 per cent on the first day. But subscription to its $2.5 billion initial share offering was comparatively on a sluggish phase on the second day. Retail investors are individuals or NRIs who apply for up to Rs 2,00,000 in an IPO.