After showing weakness last week and creating some bearish-looking technical formations, stocks took a turn for the better on Monday. Perhaps it was renowned value investor Warren Buffett breaking from his usual aversion to tech companies and investing $1 billion in Apple (AAPL) that gave bulls a much-needed shot of confidence. But then things went south again on Tuesday, and some commentators are surmising that the strength in some of the economic data makes investors think the Fed is more likely to raise rates, i.e., we may be back to a good-news-is-bad-news reactionary environment. Read more about Sector Detector: Global uncertainties, mixed economic signals, and summer doldrums conspire to paralyze investors