Equity indices rebounded in early trade on Wednesday amid the ongoing optimistic trend in equities and buying in largecap stocks. The 30-share BSE Sensex climbed 273.65 points to 74,957.35 in early trade. The NSE Nifty advanced 83.85 points to 22,726.60. From the Sensex basket, Bharti Airtel, Tata Steel, Reliance Industries, Kotak Mahindra Bank, Axis Bank and State Bank of India were the major gainers. HDFC Bank, Tata Consultancy Services, UltraTech Cement, and Wipro were the laggards.