The seasonality tool here at StockCharts.com provides an easy way to review historical results for indices, sectors, industry groups and individual stocks. I looked at financials and healthcare industry groups as these two sectors have performed the worst over the past three months. Perhaps seasonal strength can provide a “cure” for pharmaceuticals ($DJUSPR), which have clearly been under the weather. Here’s the historical view of pharmas, broken down by average calendar month returns over the past 17 years: