FYI: As oil prices collapsed, the Dow Jones Industrial Average and the S&P 500 sank 5.1% in just seven trading days between Dec. 5 and their bottom (so far, at least) this past Tuesday.
Then Janet Yellen rode to the rescue. On Wednesday, the Federal Reserve Chairwoman indicated that interest rates would stay low for some time to come. Stocks went straight up, climbing back within 1% of their all-time highs by Thursday—when the market had its biggest one-day gain in three years.
Regards,
Ted
http://blogs.wsj.com/moneybeat/2014/12/19/what-petro-panic-how-investors-should-adjust-their-portfolios/tab/print/