Why Is Arm Holdings $ARM Stock Down -8.63% Today? (Find out why any stock moved today on Tickeron.) • ARM shares fell roughly 8.63% on Thursday, extending a sl

Why Is Arm Holdings $ARM Stock Down -8.63% Today? (Find out why any stock moved today on Tickeron.) • ARM shares fell roughly 8.63% on Thursday, extending a slide that began after its fiscal second-quarter earnings report. • The primary catalyst was a guidance and royalty disappointment: revenue a…