Why has Butterfly Appliances rallied so sharply in recent days?

Kitchen appliance manufacturer, Butterfly Gandhimathi, gained 45% in the last one week after results to Rs.923 after it turned around to net profit of Rs.9.9 crore in Mar-21 quarter. It had reported net loss in Mar-20 quarter. Revenues were up 86% as the lockdown accentuated preference for home food. Butterfly also reduced its average debtors days.