EU antitrust regulators have paused their probe into NVIDIA's proposed $40 billion acquisition of ARM as they await further information. This takeover which would be the largest chip merger in history is now "highly unlikely" according to analysts as regulators from the FTC in the US are suing to block the deal. The UK's Competition and Markets Authority (CMA) is also undergoing an in-depth investigation to discover potential national security risks and competition concerns. These competition concerns are shared by the FTC who state that the acquisition would stifle innovation in next-generation technologies and would distort Arm's incentives to benefit NVIDIA by undermining rivals. NVIDIA has originally hoped to complete the deal within 2 years however this timeline is now unachievable as noted by CEO Jensen Huang in August.