An uneasy start to the trading day at the Opening Bell Thursday. Stocks started lower on oil's sharp fall and the continuing uncertainty over Greece's bailout. Investors' moods were lifted with news the number of Americans applying for unemployment benefits fell more than expected last week. Initial claims are now below the key 300,000 mark at 283,000. Walmart (WMT) reported mixed results, beating earnings estimates but missing on revenue. The world's largest retailer also announced it will raise hourly pay for half a million of its employees. The move ensures hourly workers to earn at least $9 an hour in April, $1.75 above today's federal minimum wage. Priceline (PCLN) is soaring in early trading on better-than-expected earnings results. The online travel company did warn its current quarter will take a hit from the strong dollar.