* Housing stocks tumble after KB Home cuts revenue forecast
* Walmart gives up early gains after comp sales beat
* Apple holds up after 5 days of losses
* PC&E Corp plunges again, hits over 15-yr low
* Indexes: Dow down 0.30 pct, S&P up 0.01 pct, Nasdaq up 0.43 pct (Updates prices, adds details)
By Sruthi Shankar
Nov 15 (Reuters) - U.S. stocks struggled on Thursday as an attempt by technology companies to rebound from this week's sharp losses was outweighed by a batch of weak results and Brexit-related concerns.
Department store operator J.C. Penney Co Inc lowered its sales outlook ahead of the holiday shopping season. However the shares reversed course to trade up 4.9 percent after new Chief Executive Officer Jill Soltau gave the first indications of her plans to turn a profit.
Dillard's Inc fell 13.7 percent after reporting third-quarter results.
Shares in the world's largest retailer Walmart Inc, which was up earlier after beating quarterly comparable sales estimates and raising full-year outlook, gave up gains to trade down 1.5 percent.
The results pulled down the broader group, sending the S&P 500 retailing index 1.5 percent lower, despite economic data that showed U.S. retail sales rebounded sharply in October.
Political events in Europe also scared investors after a series of resignations in British Prime Minister Theresa May's government threw into doubt her long-awaited Brexit deal and reports of anti-euro comments from an Italian official.
"Market's choosing not to pick and spare (retail) numbers and most of the retailers are looking forward to the holiday season," said Rick Meckler, a partner at Cherry Lane Investments, New Vernon, New Jersey.
"But right now the focus is on rising interest rates and the potential for long-term trade disruptions with China."
Markets earlier got some relief following news that China had delivered a written response to U.S. trade demands ahead of an expected meeting between President Donald Trump and Chinese President Xi Jinping at the end of the month.
"Most people thought it would be resolved but it has dragged on and the optimism has turned to pessimism," said Meckler.
U.S. stocks got off to a shaky start this month after a sharp selloff in October as investors weigh the prospects of rising interest rates, slowing global economy and trade tensions.
At 11:36 a.m. ET the Dow Jones Industrial Average was down 74.90 points, or 0.30 percent, at 25,005.60, the S&P 500 was up 0.35 points, or 0.01 percent, at 2,701.93 and the Nasdaq Composite was up 30.66 points, or 0.43 percent, at 7,167.05.
Cisco Systems Inc rose 3.7 percent after the network gear maker reported better-than-expected quarterly results, benefiting from demand for its routers and switches.
Apple Inc jumped 1.9 percent after five days of losses, helping the S&P technology index gain 1.2 percent.
Facebook Inc dropped 1.7 percent after the New York Times reported on how its executives ignored and then sought to conceal signs that the social media giant could be exploited to disrupt elections and broadcast viral propaganda.
Amazon.com Inc fell 1.3 percent, pulling the S&P consumer discretionary index down 1.4 percent.
KB Home slumped 16.6 percent after the company cut fourth-quarter revenue forecast. Shares of other homebuilders including PulteGroup Inc, Toll Brothers Inc and Lennar Corp also fell.
Shares in utility PG&E Corp continued its decline for a sixth day, hitting a 15-year low at $19.75, after warning that it could face "significant liability" in excess of its insurance coverage if its equipment caused the northern California blaze.
Declining issues outnumbered advancers for a 1.24-to-1 ratio on the NYSE. Advancing issues outnumbered decliners for a 1.25-to-1 ratio on the Nasdaq.
The S&P index recorded two new 52-week highs and 17 new lows, while the Nasdaq recorded five new highs and 114 new lows. (Reporting by Sruthi Shankar and Shreyashi Sanyal in Bengaluru; Editing by Shounak Dasgupta)