US STOCKS-S&P 500 flat, on track to close slightly lower on week
* Nike rallies after results; DuPont drops as outlook cut
* Russell reconstitution may drive up volume at close
* Consumer sentiment rises in June - U Mich
* Indexes: Dow off 0.2 pct, S&P flat, Nasdaq up 0.2 pct (Updates to midday trading)
By Ryan Vlastelica
NEW YORK, June 27 (Reuters) - U.S. stocks were flat on Friday, pointing to a week of modest losses as recent data painted a mixed picture of economic growth, though Wall Street's 2014 rally was expected to continue into the second half of the year.
The S&P 500 was 0.3 percent away from a record closing high hit last week, but breaking decisively above that level may be difficult amid a dearth of catalysts. Still, with the second quarter nearing a close, the S&P 500 is up about 5.9 percent year-to-date.
U.S. consumer sentiment rose more than expected, according to the Thomson Reuters/University of Michigan's final June reading, though that follows weak reads on consumer spending and first-quarter economic activity earlier this week. Continuación...