S&P 500 set for another down week as January's rally fizzles

By Stan Choe

U.S. stocks fell in morning trading Friday to join a worldwide move lower as concerns remain high about global trade and the strength of the economy.

The S&P 500 is on pace to close out its second down week in the last three, as investors hit pause following a tumultuous two months where the index followed up its worst December since 1931 with its best January in three decades.

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