U.S. stocks jumped in an­oth­er man­ic day on Wall Street, but the falling val­ue of the U.S. dol­lar and oth­er swings in fi­nan­cial mar­kets sug­gest wor­ries about Pres­i­dent Don­ald Trump’s trade war re­main high.

The S&P 500 rose 1.8% Fri­day af­ter veer­ing be­tween gains and loss­es, clos­ing a his­toric week full of mon­strous swings. But the falling val­ue of the U.S. dol­lar and oth­er swings in fi­nan­cial mar­kets sug­gest wor­ries about Pres­i­dent Don­ald Trump’s trade war re­main high.

The Dow Jones In­dus­tri­al Av­er­age went from an ear­ly loss of near­ly 340 points to a gain of 810 be­fore clos­ing with a gain of 619 points.

The Nas­daq com­pos­ite rose 2.1%. Stocks kicked high­er as pres­sure eased a bit from with­in the U.S. bond mar­ket.

By STAN CHOE