US STOCKS-Wall St edges up, set for best month since February
* Trading volumes light ahead of Labor Day holiday
* Indexes on track for fourth straight week of gains
* Chicago PMI, consumer sentiment both top forecasts
* Dow off 0.04 pct, S&P up 0.18 pct, Nasdaq up 0.3 pct (Updates to midday trading)
By Chuck Mikolajczak
NEW YORK, Aug 29 (Reuters) - U.S. stocks edged higher in a quiet session on Friday as the latest in a string of positive data pushed investors to extend a rally that had been briefly threatened by overseas concerns, although gains were capped ahead of an extended holiday weekend.
Since falling to a near three-month low on Aug. 7, the S&P 500 is now on track for its 12th rise of the past 16 sessions. It is also set to close out its fourth straight weekly advance and its sixth positive month of the past seven.
Wall Street fell early in the session after Britain introduced a note of caution into the market, raising its international terrorism threat level to the second highest in response to possible attacks being planned in Syria and Iraq.
"Short term, you never know in advance of a holiday weekend, plus given everything else that is going on, people are just being cautious so you are not going to see any big upside," said Randy Carver, president and founder of Carver Financial Services in Mentor, Ohio. Continuación...