Last week, the S&P 500 put an end to its streak of weekly losses, despite giving back some gains on Friday. Thursday provided the big catalyst, with the ECB’s announcement of its bold new monetary stimulus plan. Investors were cheered and soothed for the moment. And U.S. fundamentals still look strong. Read more about Sector Detector: With the Fed fading into shadows, investors look overseas for new catalysts

Now that’s what I’m talking about. I have been discussing the overbought technical conditions of the S&P 500 for some time and the need for a pullback to test bullish support levels. And as many commentators have suggested, the more time between pullbacks, the more severe is the action when it finally arrives. Bears had become very hungry after a prolonged hibernation. This week offered up a nasty pullback. Read more about Sector Detector: Patient bulls finally get a new entry point, thanks to inflation fears