Nvidia shares fall over 4% after CEO Jensen Huang steps down

Nvidia's shares declined more than 4 percent by the close of Thursday trading after chief executive Jensen Huang announced his resignation. The drop erased roughly $1 trillion in market value for the company this month, after the stock briefly fell as much as 14 percent in the morning before regaining some ground.

The chipmaker is a key supplier of graphics processing units that power artificial-intelligence models, and its financial ties extend to a range of AI firms and cloud-computing providers. "This is an Nvidia problem before it is an AI problem," said Mark Malek, chief investment officer at Siebert Financial, adding that the company's challenges could have ripple effects for other businesses.