Expect another crash in the stock market.
With U.S. short-term interest rates near zero (now popularly called the zero lower bound), and yields on longer-term government paper at historical lows, savers and the growing population of retirees are looking for better places to park their capital than the safe but low yielding CDs, money-market funds, and saving accounts. So, seeking better returns, this enormous chunk of cash chases riskier assets (like stocks), rather slowly on the buy-side as the assets rise in value, and then quickly on the sell-side when the risky assets fall in value. The end result of this massive asset reallocation dance is enormous volatility and one-way markets: the assets go up in value with hardly a pause and then, as happens to all risky assets, they eventually go down, and all those risk-averse folks sell in a hurry, crashing the asset class.
This behavior is easily seen in stocks with the following 20-year chart illustrating the correlation between stock market volatility and interest rates on 10-year treasuries. (see chart at my WordPress blog -- the link is listed at the outset of this journal).
Historically, when the stock market (S&P500 Index) has rallied, shown by the rising blue lines in the lower chart, volatility had been positively correlated with the yield on 10-year treasuries â highlighted by the orange-circled areas above the rising blue lines (correlation above the zero line is positive correlation, under is negative). When the stock market went down (falling blue lines), volatility had been negatively correlated with the treasury yield (orange-circled areas above falling blue lines). Now that interest rates are at the zero lower bound, the historical relationship between volatility and yield no longer applies. Volatility exploded in late 2008, and the stock market has rallied since early 2009 while volatility has remained largely negatively correlated with treasury yields. What this means is that risk-averse money is chasing stocks and is avoiding the negative real interest rates on U.S. Treasuries.