US STOCKS-Wall St mixed on Greece, China worries; energy stocks down
* Oil prices fall after rising for eight straight weeks
* Apple biggest drag on S&P 500, Nasdaq
* Indexes: Dow down 0.08 pct, S&P up 0.05 pct, Nasdaq up 0.1 pct (Adds details, changes comment, updates prices)
By Tanya Agrawal
May 11 (Reuters) - Wall Street was mixed in morning trading on Monday amid worries about Greece's precarious financial condition and slowing growth in China, while energy stocks fell on weaker oil prices.
The U.S. stock market, which rallied on Friday on a strong jobs report, has been trading at historically expensive valuations, fueled by ultra-low borrowing costs.
"Even though the market closed up on Friday, more stocks were lower for the week and that points to weakness," said Paul Nolte, portfolio manager at Kingsview Asset Management in Chicago.
"We could see some sloppy action for the next couple of sessions."
U.S. light crude was down after rising for eight straight weeks, the longest winning stretch since early 2013, on signs that U.S. shale oil production was recovering. Continuación...