Foreign investors have infused Rs 13,764 crore ($2.3 billion) into equities, and Rs 18,188 crore ($3.1 billion) in debt markets, taking the total to Rs 31,952 crore ($5.4 billion), shows the latest market data.
Only one trading session is left for this month.
According to market experts, the strong inflows by overseas investors have continued mainly on account of various reform measures expected from the new government and hopes of a stable economic policy regime.
FIIs (Foreign Institutional Investors), considered to be the main drivers of the equity market, have also helped push up the stock market's benchmark BSE index, Sensex, 3.64% so far in June.
Since the beginning of the year, foreign investors have made net investment of Rs 59,568 crore in Indian equities and Rs 64,307 crore in debt, taking the total to Rs 1.24 lakh crore ($20.5 billion).
The strong inflows in the recent months have taken the cumulative net investment of overseas investors into India to $191 billion or well over Rs 9 trillion (Rs 9 lakh crore).
This is based on data from November 1992 onwards, when foreign investors began investing into Indian markets. It includes about $156 billion into equities and about $35.6 billion in debt market.