Stan Weinstein states in his amazing book that choosing the right sector to trade is just as important as trading with the overall market trend at your back. Just in the past year in 2017 we've seen this concept front and center with semiconductor stocks, cannabis stocks, and even bitcoin-related stocks all experiencing massive gains as each of those sectors was on fire for a period of time. This is the reason for studying all market sectors at all times because it increases the chances of catching a big trend.

If we go back in time and study the past 20 years it becomes apparent how market outperformance has transitioned between major sectors in the market. From 2001-2011 the leading sectors of the market were anything commodity-related, from gold miners to oil and agriculture producers to uranium and rare earth metals. This is generalized by the chart below which shows how the HUI Gold Bugs Index outperformed the Nasdaq 100 from 2001-2011.

Next from 2011-2015 biotech and healthcare-related stocks were the leading sector in the markets as evidenced by the chart below showing the ratio between the IBB Biotechnology ETF and the Nasdaq 100.