US STOCKS-Nasdaq gains 7th day; Dow, S&P 500 slip with Wal-Mart
* Decline in oil prices weighs on energy shares
* Nasdaq up for 7th session, longest streak in a year
* Priceline rallies after results, Wal-Mart down
* Dow down 0.24 pct, S&P down 0.11 pct, Nasdaq up 0.37 pct (Updates close with Intuit shares up after the bell, American Express, details)
By Caroline Valetkevitch
NEW YORK, Feb 19 (Reuters) - The Nasdaq rose for a seventh straight session on Thursday as Priceline shares jumped, while the Dow and S&P 500 eased following declines in energy shares and a disappointing outlook from Wal-Mart.
Uncertainty over prospects of a debt deal with Greece added to investor caution. Germany rejected a Greek proposal for a six-month extension to its euro zone loan agreement, saying it fell short of conditions set out by the country's euro zone partners.
Boosting the Nasdaq, which had its longest winning streak in a year, Priceline Group shares rallied 8.5 percent to $1,218.05 on its quarterly results. The stock also was the S&P 500's largest daily percentage gainer.
A drop in shares of Wal-Mart Stores Inc weighed down the Dow after the company cut its sales outlook, citing the stronger dollar. Shares dropped 3.2 percent to $83.52. Wal-Mart also said it would raise entry-level wages to $9 an hour. Continuación...