Mario Draghi

Nearly 19 percent of all corporate bond activity in the past two days is down to the European Central Bank's corporate bond-buying program, according to insights from market data provider Trax.

The ECB formally kicked off its corporate bond buying program on June 8th, a move heralded by President Mario Draghi in March. As part of its plan, the ECB will buy euro-denominated investment grade bonds issued by companies in the euro area.