Yes, I love it! zyprexa medication administration But do such events mean the stock market's structure itself is dangerously brittle? Not necessarily, strategists say. Fran Kinniry, a principal at Vanguard Investment Strategy Group, says the fact that these events are newsworthy shows how unusual they are and, counterintuitively, how reliable the markets have become. There is always a chance of a market tumble, and there is rising uncertainty about the economy as the Federal Reserve gradually begins to pull back after five years of easy credit.