Stocks continue to crawl higher. The steady pace has all three major equity averages up more than 2% to their best levels of the day. The action comes in stark contrast to what had been exhibited in the three previous sessions, when stocks suffered a string of losses that left the S&P 500 to shed more than 4%. Amid the decidedly positive tone of today's trade, advancing volume outnumbers declining volume by about 15-to-1 on the NYSE. Overall share volume isn't that robust, though