Intel shares fell after Elon Musk suggested another chipmaker could join his large semiconductor venture.
Musk said talks with Taiwan Semiconductor Manufacturing Company are ongoing for the Terafab project.
The comments raise the possibility that Intel will not be the sole manufacturing partner.
Intel had been linked to the venture as a key player in chip production.
The uncertainty around Intel’s role appears to have weighed on its stock price.
TSMC is the world’s largest contract chipmaker and a major competitor to Intel.
No final agreement with TSMC has been announced, and details remain limited.
Intel has not commented publicly on Musk’s remarks about a second partner.
Investors are watching the venture closely because of its potential scale and cost.
