Over half of all companies that make up the broad-based S&P 500 Index, which, as the name implies, is made up of 500 companies, have reported through the end of April. So far profits are expected to rise an astounding 25% versus a year ago, according to Thomson Reuters I/B/E/S. Anything above 10%, a double-digit increase, would be viewed as solid.

Last year, stocks marched higher with only minor pullbacks. When the year ended, the largest peak to trough decline for the S&P 500 Index was just under 3% (St. Louis Federal Reserve data on the S&P 500). It was a year that lacked turbulence and one that rewarded diversified investors. Since the beginning of February, volatility has returned.

After nearly a decade of leaving the federal funds rate at zero percent, the time finally came on December 16, 2015: The U.S. Federal Reserve (the Fed) started raising the federal funds rate with modest increases ever since. What do these rate changes mean to your financial well-being? Is there anything you should “do” to your investment portfolio when they occur?

February’s early slide saw the S&P 500 Index lose just over 10% in value–an official correction–in just nine trading days. That’s right–nine trading days from an all-time high to a 10% decline which, according to LPL Research, was the quickest on record. Moderate economic growth at home and abroad has been fueling corporate profits.