FormFactor is trading 5.96% lower at $121.96, with semiconductor-sector pressure providing a possible backdrop; no clear company-specific announcement explaining the September 28 move surfaced in the available search results.
- OpenAI paused work on its most capable models, renewing concerns that AI development and related chip investment could slow.
- Asian chipmakers also fell.
- The sector backdrop is consistent with the decline but does not confirm the precise cause of FormFactor’s pre-market move.