Indian equities gained in the quarter ended September as Asia’s third-largest economy reopened after the second wave of the pandemic and speedier vaccination aided optimism.The Nifty 50 rallied as much as 12.4% in July-September. The mid- and small-cap indices, too, rose 10% and 11.8%, respectively, despite suffering losses in August, according to Bloomberg data.Some of the veteran investors used this opportunity to buy or pare holdi...