John Paulson, the hedge fund manager who was called before Congress last week to discuss the big profits he made by foreseeing the collapse of the subprime mortgage market, has started to buy securities backed by residential mortgages.

Paulson’s move marks the latest example of a famously bearish investor shifting gears to profit from depressed prices in the global credit markets.

US residential mortgage securities fell in value last week after Hank Paulson, Treasury secretary, said that the federal government had decided against buying toxic assets as part of its $700bn (£466bn) troubled asset relief programme (Tarp).

John Paulson, who is not related to the Treasury secretary, has told his investors that he started buying troubled mortgage-backed securities at the end of last week, hoping to capitalise on price falls that followed the Treasury announcement.

Financial Times