Timeline: SoftBank-backed Arm’s long march to $54.5 billion US listing

Arm Holdings secured a $54.5 billion valuation in its U.S. initial public offering (IPO) on Wednesday, seven years after its owner SoftBank Group took the chip designer private for $32 billion.

The Japanese investment giant sold 95.5 million American Depositary shares of Arm at $51 apiece to raise $4.87 billion in the listing.