US STOCKS-Energy pressures Wall St, Priceline boosts Nasdaq
* Decline in oil prices weigh on energy shares
* Priceline rallies after results, Wal-Mart down
* Jobless claims fall in latest week
* Dow down 0.2 pct, S&P down 0.1 pct, Nasdaq up 0.3 pct (Updates to market open)
By Ryan Vlastelica
NEW YORK, Feb 19 (Reuters) - U.S. stocks fell modestly on Thursday with energy shares leading the drop amid a slump in oil prices, and investors remained cautious as uncertainty continued over the prospects of a debt deal with Greece.
Losses were outsized in the Dow after Wal-Mart Stores cut its sales outlook, citing the impact of a stronger dollar. Shares fell 2.5 percent to $84.08.
On the upside, Priceline Group rallied on its results, helping keep the Nasdaq slightly positive.
Crude oil fell 3.5 percent to $50.30 as another big weekly build in U.S. crude inventories and possible rise in Saudi output fueled concerns about oversupply. Continuación...