U.S. stocks fell on Tuesday at a record for the 53rd time this year. However, experts expect to notch another year of gains due to the optimistic economic outlook.

The S&P 500 dropped 0.5 percent at 4 p.m. in New York, while the Dow Jones Industrial Average lost 55.16 points, or 0.3 percent. Caterpillar plunged $1.12, or 1.2 percent, to 92.59, adding to the weight on the Dow.

In the meantime, the Nasdaq 100 Index slid 0.7 percent as Apple Inc. lost 1.2 percent. Utility shares in the S&P 500 also dropped by the largest amount since June 2013 at 2.1 percent. However, the shares have gained 26.6 percent in 2014.

In addition, around 4.7 billion shares changed hands on U.S. exchanges, which is 30 percent below the three-month average.

"We could be seeing a little bit of profit-taking coming into year-end," said David Lafferty, the chief market strategist for Natixis Global Asset Management in Boston, according to Bloomberg News. "Volume will tend to be very light through year-end, and we anticipate it being quiet."

David Lebovitz, global market strategist for J.P. Morgan Funds, the mutual-fund arm of J.P. Morgan Chase & Co. also shared predictions.

"If companies keep making money the way they have been ... I see no reason stocks can't keep pushing higher," reports the Wall Street Journal.

Experts say that the instability overseas in Greece and Europe will more than likely have no bearing on the markets in America.

"What's going on in Greece right now is a problem that's specific to Greece," Lebovitz said. There isn't "the same element of contagion that existed when we were talking about the banks and sovereign debt."

Chris Gaffney, senior market strategist at EverBank Wealth Management agreed.

"Conditions are much better for U.S. companies than for European and Asian companies. Earnings will support this market," he said.