ACLS ▼ -2.4% - Axcelis Technologies, Inc. $ACLS - Axcelis Announces Participation in Upcoming Investor Conferences Axcelis Technologies shares fell 2.4% today following the company's announcement that it will participate in upcoming investor conferences. Conference participation announcements alone typically do not drive material price moves, suggesting the decline may reflect broader market conditions or investor sentiment unrelated to the news itself. 01-SEP-2026 08:02 AM ET