Yesterday's triple-digit gain was an afterthought today, as the Dow Jones Industrial Average (DJIA 14,078.7) gave back nearly 86 points today. The biggest drag on the venerable index throughout trading today was Boeing (BA). The aerospace firm finished the day more than 2% after reporting yet another delay in delivering the Dreamliner. The high-flying Dow component lost potential support at the 100 level, and now may face resistance at this level as it tries to trek higher. Moving to the longer picture, the shares lost the support of their 20-week moving average, and are poised to close below this trendline (barring a late-week rally) for the first time since the first week of September. That said, longer-term support is in place, as the stock still may enjoy support from its 10-month moving average. The last time the stock closed below this trendline was August 2006.

The S&P 500 Index (SPX 1,562.47) finished the day more than 2.5 points lower. The lone index that fought higher was the tech-rich Nasdaq Composite (COMP 2,811.6). The COMP advanced to a multi-year high, and closed above the 2,800 level for the first time since October 2000.