Many Long Islanders are checking their investments after the Dow Jones industrial average tumbled nearly 1,200 points Monday – the largest single-day percentage fall since 2011. 

Some experts say it's just the markets natural way of ironing itself out after record gains over the past year. Others say it could mean that the Federal Reserve will raise interest rates faster than expected.

Financial advisor Jon Ten Haagen says people shouldn't make rash decisions during wild swings of the market. He says they should be a reminder to look at investments with a professional.

"Don't panic. Talk to your advisors, review your goals and aspirations, your time parameters, your risk tolerances and see where you stand," said Haagen. 

Experts also said the drop off may reveal some bargain stocks that clients could have the opportunity to buy.

The Dow Jones industrial average closed up more than 560 points, or 2 percent, after another volatile day Tuesday.