Stocks notched uneven early gains Tuesday as investors weighed solid new home sales and mixed durable goods data against the potential for a deal between Greece and its eurozone creditors. The Dow Jones industrial average climbed 0.3%. The Nasdaq added less than 0.1%. The S&P 500 split the difference, up 0.2%. Volume was mixed on the stock market today, up 5% on the Nasdaq and 8% lower on the NYSE, compared to trade at the same time Monday.