US STOCKS-Wall St flat after six-day run amid mixed global data
* U.S. Flash PMI, existing home sales top expectations
* Wisconsin Energy to buy Integrys for $9.1 bln
* Oracle to buy Micros for $68 per share
* Dow off 0.14 pct, S&P off 0.02 pct, Nasdaq off 0.05 pct (Updates to open, adds U.S. PMI, housing data, comments)
By Chuck Mikolajczak
NEW YORK, June 23 (Reuters) - U.S. stocks were little changed on Monday following a six-day rally in the benchmark S&P 500 and a mixed bag of global economic data.
Financial data firm Markit said its preliminary, or "flash," U.S. Manufacturing Purchasing Managers Index rose to 57.5 in June, above economist expectations for 56.5 and the highest reading since May 2010.
Housing data was also encouraging. The National Association of Realtors said existing home sales in May increased 4.9 percent to an annual rate of 4.89 million units, the largest increase since August 2011. The PHLX housing sector index gained 1.2 percent.
Earlier, the HSBC/Markit Flash China Manufacturing Purchasing Managers' Index rose into expansion territory for the first time in six months with a 50.8 reading for June, from May's final reading of 49.4, beating the 49.7 forecast in a Reuters poll of economists. Continuación...