Stocks fell as the broadest measure of U.S. economic growth fell short of expectations in the first quarter and Amazon.com gave a disappointing outlook. **CHEVRON CORP, $120.06, up 1.3 pct. **AMAZON.COM INC, $255.52, down 7 pct.
April 26- National Instruments Corp:. *JP Morgan cuts price target to $28 from $32 For a summary of rating and price target changes on U.S. companies:. Reuters Station users, click. 1568.
*Oracle offers $23.50 per share, a 31 pct premium. Dec 20- Oracle Corp agreed to buy Eloqua Inc, a maker of web-based marketing automation software that listed in August, for about $810 million as it seeks to expand its cloud-computing services.