NEW YORK (MarketWatch) -- Treasury prices stayed lower and the dollar extended gains slightly against the Japanese yen on Friday after a report showed U.S. wholesale inventories rose 1.3% in July. The dollar rose to buy 84.27 yen (USDYEN 84.2200, +0.4000, +0.4772%) , up from ¥83.83 on Thursday. The dollar index (DXY 82.74, +0.06, +0.08%) , a measure of the U.S. unit against a basket of major rivals, traded at 82.787 versus 82.745 before the data and up from 82.683 in North American trade late Thursday. Yields on 10-year notes (UST10Y 2.80, +0.04, +1.45%) , which move inversely to prices, stayed higher by 4 basis points to 2.80%.

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