Out in the field, the industry players are doing real work.

Once in a great while, a sector trend becomes so strong, the rising tide lifts every boat in the industry.

After a long search yesterday, your editor in chief found the No. 1 way to lose money in stocks right now: betting against oil. The past few years have seen the rise of ETFs that allow speculators to make bets against sectors like energy, technology, and financials.