In the latest round of fourth-quarter earnings reports, the majority of semiconductors are pointing to weakness in China as a key drag on their businesses. For example, chipmaker Nvidia forecasted a weaker revenue guidance after it cut its projected revenue to $2.2 billion from $2.7 billion.

“Deteriorating macroeconomic conditions, particularly in China, impacted consumer demand for NVIDIA gaming GPUs,” the chipmaker said in a statement.

It was reported by the International Monetary Fund recently that China’s economy grew at a rate of 6.6 percent last year based on numbers coming out of China’s government. The figure was in line with analyst expectations, but represented its slowest pace of growth in almost 30 years.

“The one thing with China is it’s not a made-up story. It’s not like companies are blaming just the Fed or the weather,” said Quincy Krosby, chief market strategist at Prudential Financial. “As we go through the week, if this becomes a theme in many different sectors, it’s going to lend urgency to the idea that the global economy is slowing and the need for more stimulus.”

Another chipmaker, Intel is forecasting lesser-than-expected revenue, which could be another telltale sign for weakness in the sector.

“This may be the best read in one place that an investor can make into the health of the semiconductor industry as a whole,” Real Money contributor Stephen “Sarge” Guilfoyle wrote in his column. “Chip stock performance underscores the health of almost everything else. If chip stocks are cold, business spending itself is cold. In fact, if chip stocks are cold, the consumer, him or herself, is probably cold as well.”

With a U.S.-China trade deal looming or not, this could be the trigger event for the semiconductor industry. In the video below, CNBC’s Sara Eisen takes a look at chip stocks rising on the potential for a U.S.-China trade deal.

For more trends, visit the Core ETF Channel.