Fundamentals tend to drive my opinion of markets. I have been trading commodities and other assets since the early 1980s and have found that supply and demand factors often uncover compelling opportunities in markets across all asset classes. When it comes to technical analysis, I never discount the importance of sentiment which shows up on charts and sometimes sticks out like a sore thumb.Double tops, head and shoulder formations, key reversals, and other technical patterns represent past price action which is never a guaranty of future performance. However, these signals often cause market participants to