Indian equity benchmarks BSE Sensex and NSE Nifty50 are likely to open lower on Thursday amid a largely negative trend across global markets, a day after the RBI hiked the key lending rate by 50 bps as expected. Singapore Exchange (SGX) Nifty futures — an early indicator of the Nifty index — fell as much as 94.5 points or 0.6 percent to 16,254.5, suggesting a lower opening ahead on Dalal Street.