CNBC commentator Ron Insana writes in a commentary for CNBC that while some market experts are seeing serious warnings sign for the market, he doesn’t – not just yet.

Insana cautions that investors shouldn’t panic just because the Dow Jones Transportation Average is noticeably underperforming the Dow Jones Industrial Average

"'Dow Theory' suggests that when the industrials and transports are moving up in tandem, a bull market is in force and the economy is chugging along at a healthy clip. By the same token, if the averages part ways, it could be viewed as a warning sign that something in the economy is out of line,” he wrote.

“The true test will come if the industrials move to new highs from here, and the transports break down even further. That would be a meaningful divergence and suggest a Dow Theory "sell" signal. In that case, it would be time to catch a train departing Wall Street Station. For now, it is a light yellow flag. Any deeper divergences and that flag will go from pale yellow to flashing red.”

However, some other television business-news commentators do see more serious warnings signs for the US economy.

Trish Regan, an anchor at Fox Business Network and a columnist at USA Today, wrote in a recent commentary that “the world economy faces massive challenges.”

She pointed out that “if you combine our problems at home with the unraveling of the eurozone, economic challenges in Asia and a decline in commodity prices that hurts developing nations, many fear we have the recipe for a potential worldwide recession the likes of which we haven't seen since the early 1930s.”

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