Southwest down, Under Armour and Comcast up

New York • Stocks that moved substantially or traded heavily Thursday: • Under Armour Inc., up $1.96 to $21.67 The athletic apparel maker reported higher costs but still beat Wall Street’s expectations for the first quarter. • Comcast Corp., up 80 cents to $39.59 The cable TV and entertainment company reported first-quarter earnings that were far higher than analysts had expected. • Union Pacific Corp., up $3.36 to $113.59 The railroad operator’s first-quarter profit climbed 9 percent as the c...

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