Stocks carved steep losses ahead of Monday’s open, as global markets and commodities figured in added risk of a Greek exit from the eurozone following the country’s referendum vote on Sunday. Dow futures were 146.1 points below fair market value and ticking lower. Nasdaq 100 futures were steady, down 31.9 points. S&P 500 futures were down 17 points and drifting lower. The stock market today marks a historic session in a couple of ways.