It follows a 4-month high inflow of Rs 12,612 crore in the preceding month. That was the highest net inflow since March when FPIs had pumped in Rs 21,143 crore into the stocks.
Indian equities have been witnessing positive inflows from foreign investors since March.
Foreign portfolio investors (FPIs) turned net buyers in March after pulling out a massive Rs 41,661 crore from the market in previous four months (November-February).
Brokers said the likely delay in US rate hike is positive for emerging markets, especially India, triggering fresh round of purchases by investors.
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Sentiment got a fillip after the long-stalled indirect tax reform GST Constitution Amendment Bill was passed in the Rajya Sabha on August 4 and in the Lok Sabha on August 8.
BoE, earlier this month, had cut its key interest rate by 25 basis points to 0.25 per cent, its first reduction since 2009, and also begun a fresh round of quantitative easing that had been on pause since 2012.
According to depositors' data, net investment of FPIs stood at Rs 7,723 crore in equities on August 1-19. However, they pulled out Rs 1,699 crore from the debt market, taking the total inflow to Rs 6,023 crore.
He added: "In the Indian context, there would be USD 26 billion outflow to meet the FCNR(B) redemptions in October and November. This should lead to currency deprecation in India, reducing the total return of FPIs."
So far this year, FPIs have invested Rs 39,501 crore in equities while withdrawing Rs 6,422 crore from the debt market. This resulted in a net flow of Rs 33,079 crore.