Overseas investors have pumped in over 11,300 crore rupees in the Indian debt markets since the beginning of this month. Foreign investors were gross buyers of debt securities worth 20,559 crores between 1st to 16th January, while they sold bonds amounting to 9,250 crores, latest data with Central Depository Services Ltd showed.In addition, Foreign Institutional Investors have made a net investment of 244 crore rupees in the domestic stock markets.In 2014, the net investment by overseas investors into the debt markets was 1.16 lakh crore rupees, while in equities it stood at 98,150 crore rupees.