Indian equity benchmarks BSE Sensex and NSE Nifty50 are likely to open on a subdued note on Friday, amid a sell-off across global markets on fears of recession. Singapore Exchange (SGX) Nifty futures — an early indicator of the Nifty index — rose as much as 73 points or 0.5 percent to 15,382.5 early on Friday, suggesting a mildly positive opening ahead on Dalal Street.