Updated from 10/22/11 to include outcome of weekend talks among European leaders.NEW YORK ( TheStreet) -- The Dow has gained almost 10% over the past four winning weeks. That's the longest such streak since January, which saw a string of eight winning weeks, according to Dow Jones Indexes. But can the market continue to rise on only optimism about Europe? Every time the Kool-Aid seems to run out, the bulls give us another kicker. On Friday, blue-chips rose by triple digits even as Germany and France had hit a schism on how to leverage up the eurozone rescue fund. The market evidently has enough patience to extend its countdown for a "comprehensive" plan by another three days. Europe's leaders also tacked on another summit on Wednesday to the one on Sunday. Headlines coming out of the weekend talks in Brussels on Sunday are unlikely to make Monday's session a happy one, as European leaders failed to complete a comprehensive plan to address the region's debt crisis. Instead, they promised they would offer their solution on Wednesday. As David Ader, strategist at CRT Capital Group, put it in a research note, investors would have a "cleaner" trade, with clarity out of the eurozone. Bullish investors would be happy to be able to just focus on earnings. > > Bull or Bear? Vote in Our Poll James Dailey, senior portfolio manager at Team Asset Strategy Fund, says he believes that Europe essentially has two paths, one of credit contraction and the other of inflation, and that eurozone leaders will choose the latter. "There are 17 chefs in the kitchen and ultimately all 17 chiefs will do what leaders in the Japan, Britain and the U.S. have done in the past," he said. "Like in any democratic country that can print paper money, the leaders chose competitive currency devaluations." Stocks are likely to get whipsawed by headlines again. If only all investors were in for the longer term, then the market would able to take any incremental headlines stride. Ader at CRT Capital Group writes that perhaps "those in the market are to blame for our own angst and nervous trigger fingers to react to those headlines when we know better." Summit Roadmap The one area where there was progress over the weekend was on the issue of recapitalizing Europe's banks. An EU official said Saturday that banks would be required to bolster their capital buffers by a bit more than 100 billion euros ($140 billion), the Associated Press reported.