* Jobless claims seen edging lower from prior week
* Volume expected to be low on quarter's last day
* Berkshire Class B shares fall after Sokol resignation
* Dow up 8 pts, S&P down 0.4 pt, Nasdaq down 0.5 pt
* For up-to-the-minute market news see [STXNEWS/US]
By Ryan Vlastelica
NEW YORK, March 31 (Reuters) - U.S. stock index futures were little changed on Thursday as investors looked ahead to weekly jobless claims data on the final day of the first quarter.
* The week has been marked by some of the year's lowest volumes as traders opt to ride recent winners amid global risks. The S&P 500 is up 5.6 percent in the quarter, based on Wednesday's close.
* Initial jobless claims, due at 8:30 a.m. [1230 GMT], are forecast at 380,000, a slight decline from the prior week. Wednesday's reassuring ADP report on private payrolls kept sentiment up for Friday's key government non-farm payrolls report.
* David Sokol, the man widely seen as the leading successor to Warren Buffett to head up Berkshire Hathaway (BRKa.N: Quote, Profile, Research) (BRKb.N: Quote, Profile, Research), has resigned after buying shares in chemical company Lubrizol Corp (LZ.N: Quote, Profile, Research) before pushing Buffett to acquire it. Berkshire's Class B shares fell 2.6 percent to $83.25 in premarket trading. For details, see [ID:nN30189928]
* S&P 500 futures (SPc1: Quote, Profile, Research) fell 0.4 point and were even with fair value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract. Dow Jones industrial average futures (DJc1: Quote, Profile, Research) added 8 points and Nasdaq 100 futures (NDc1: Quote, Profile, Research) slid 0.5 point.
* February durable goods and factory orders data will be released after the market opens; factory orders are seen rising by a smaller amount than in the previous month.
* Chicago PMI data and the New York ISM number, both for March, will also be released.
* Microsoft Corp (MSFT.O: Quote, Profile, Research) stepped up its rivalry with Google Inc (GOOG.O: Quote, Profile, Research) on Thursday by filing a formal complaint with the European Commission claiming Google systematically thwarts Internet search competition. [ID:nN31223364]
* The Macau unit of Las Vegas Sands Corp (LVS.N: Quote, Profile, Research) said it is being investigated by the Hong Kong Securities and Futures Commission for alleged regulatory breaches, the latest twist in a case that involves allegations of corruption and bribery. Shares of Las Vegas Sands fell 3.7 percent to $41.85 before the bell. [ID:nL3E7EV08W]
* U.S. stocks rose for a second session on Wednesday with activity dominated by some of the strongest-performing groups in the first quarter, including energy and and small-cap stocks.
(Editing by Kenneth Barry)
US STOCKS-Futures flat before jobless claims data