The Nasdaq composite index has fallen more than 10 percent from its December peak. The S&P 500 now sits below its level on Election Day.

Stocks struggled for buoyancy and a steep selloff in bonds abated on Friday, as investors stayed edgy at the end of a week marked by confusion over U.S. trade policy and a global rise in borrowing costs.

Investors were met with some calm on Friday after a turbulent week besieged by U.S. trade policy confusion and a global rise in borrowing costs, as a steep selloff in bonds abated and currencies steadied,