US STOCKS-Wall St dips on Ukraine concerns despite strong data
* Investors concerned by report of Russian troop movements
* GDP revised higher in Q2, jobless claims fall
* Banks in focus after reports of cyber attacks
* Indexes down: Dow 0.4 pct, S&P and Nasdaq 0.3 pct (Updates to open, adds analyst comment and housing data)
By Ryan Vlastelica
NEW YORK, Aug 28 (Reuters) - U.S. stocks fell on Thursday after Ukraine's president said Russian forces had been brought into his country, bringing concerns over the volatile region back into focus and overshadowing some positive economic data.
Worries over tension abroad had largely faded from Wall Street, with major indexes seeing few negative days over the past two weeks and both the Dow and S&P hitting records.
Ukraine's security and defense council said the border town of Novoazovsk and other parts of Ukraine's south-east had fallen under the control of Russian forces who, together with rebels, were staging a counter-offensive.
While few U.S. companies have heavy exposure to either country, investors are worried about the potential fallout from any escalation in tensions, including increased sanctions. Continuación...