It might appear obvious that this was caused by the downgrade but look how Treasuries are performing. The five-year US Treasury yield just dropped to a record low since the data has been tracked in 1962. The 1.07 percent yield is a decline of 0.18 percentage points.What may be happening is that fear causes investors to sell stocks. Investors then put funds in something they perceive as safe. Historically, that has been the US Treasury Bonds. Today appears to be no different.
So the market's reaction to S&P stating US Treasuries are now riskier is to make it significantly less expensive for the US Government to borrow.
Stocks are down about 15 percent over the past 11 trading days. Panic is overcoming greed and cash is again becoming King, as it was in March 2009. Stocks had lost 55 percent of their value then before the 120 percent surge. Cash was the only major asset class to lose out on this gain.
Investing is risky and get use to this volatility. I don't know what the next few weeks will hold but I'll be buying more stocks if they continue to plunge.