The Federal Reserve does not want to do anything that might upset the status quo. And at this point, the Fed is between a rock and a hard place. The central bank can normalize interest rates, which will ultimately pop the stock market bubble, or it can continue with its easy monetary policies and wreck the US Dollar. The Federal Reserve will ultimately sacrifice the currency (US Dollar) on the altar of the stock market.
Related trading instruments: SPDR S&P 500 Index ETF (SPY)