Two comments on this thread.
1) If you assume a fair wheel, then red and black are equally likely. The ball and the wheel have no memory. A string of runs of one color are not only likely but predictable. However, the likelihood of the next run is unaffected by past runs. If the wheel is not fair, then a string of one color might indicate a fix.
2) If an analyst (whether good or bad) sees that the price of a stock goes well below what he or she considers fair value, than the analyst should become bullish, barring the belief that the company will die and the stock become zero. Thus an analyst may hate a company, hate the business segment that they are in, hate the present direction of the market and the stock price, yet recommend the stock because the value he or she sees there will eventually become recognized and the stock price will rise from current levels to meet that recognition. CONVERSELY, an analyst may love an industry, a company, its future business prospects and the overall direction for the market. But if the stock has moved up so strongly that it is was overvalued given any reasonable business scenario, the analyst should state that the issue is overvalued.
My problem with analysts is that they don't seem very good at seeing long term trends develop. They seem to me to be very herd-like. Occaisionally you get advice like Micron at the top or Iomega at the bottom that accurately tell you what is likely to occur. That is from analysts who both do their homework and have good judgement (and possibly a little luck too.) As a long term follower of Intel, I was amazed to see Tom Kurlak of Merrill Lynch advise selling Intel in the 50s and buying in the 80s (at least the second call was right, but why would anyone believe he had any good insights after the first call). The bottom line is still the same. Do your own homework, trust your own evaluation. You may have better information or better judgement than the analyst.
Good investing to all, Burt |