In comparison, the debt market saw huge inflow of over Rs 10,200 crore during the period.
Foreign investors were gross buyers of equities worth Rs 32,484 crore till October 17 and sellers to the tune of Rs 36,239 crore, registering a net outflow of Rs 3,755 crore ($612 million), according to the latest data.
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The outflow comes after overseas investments in the stock market hit 7-months low in September.
"We have witnessed an outflow in this month mainly due to profit booking and the market is also in a consolidation mode," CNI Research Head Kishor Ostwal said.
He further said that the long-term prospects of staying invested in India are still positive.
Overseas investors (Foreign Institutional Investors or Foreign Portfolio Investors) had pumped in a little over Rs 5,100 crore in Indian equity markets in September, making it the lowest net investment since February when they had infused Rs 1,404 crore.
Since the beginning of this year, foreign investors have infused a net amount of Rs 79,682 crore ($13.3 billion) into the share market, while they invested a net of Rs 1.28 lakh crore into the debt market ($21.3 billion).
From the beginning of June, FIIs along with sub-accounts and qualified foreign investors have been clubbed together by capital market regulator Sebi to create a new investor category called FPIs.