Forex dealers said selling of the American currency by exporters and sustained foreign fund inflows also propped up the rupee.
On the global front, oil prices slipped on Friday, extending a steep fall from the previous session on surging US output and an expected supply increase from producer club OPEC and putting crude on track for a second week of declines. Both crude futures - Brent and WTI lost almost 3 per cent in value in the previous session.
According to a report by Business Standard, the rupee could end up being the best-performing currency in the region as decline in oil prices and tax collection bolsters the economy. In the past five trading sessions, the rupee has appreciated 1.30 per cent, the sharpest among major currencies in the region.
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In the equity markets, Asian shares were subdued on Friday amid thin holiday trade although the dollar found support as investors pared expectations for a US rate cut this year. Back home, the benchmark indices opened flat with positive bias. At 09:30 am, the S&P BSE Sensex was trading 79 points or 0.20 per cent higher at 39,061 while NSE's Nifty50 index was ruling at 11,739, up 14 points or 0.12 per cent.