As tempting as it is to get funds that track industries, what I have observed is that if you look at the big picture (5+ years of investing) companies are far more correlated to one another based on their market cap, rather than their industry. You might get a few time periods where energy large caps do better than healthcare large caps, or vice versa, but I remain unconvinced that trying to pick industries offers any advantage over trying to pick stocks.
I'll stick to asset allocation based on market cap, with some bonds and foreign investments thrown in. Least trouble, and, very likely, more profitable than trying to pick industries.