- The Arm IPO is happening today, September 14, 2023. The company priced its shares at $51 per share, at the top end of its expected range of $47-$51 per share. This values the company at $54.5 billion. Shares will begin trading on the Nasdaq Global Select Market under the symbol "ARM." https://youtu.be/1JQHcHzcVMQ 5 comments arm