IBM Stock Headed for Worst Day Since Black Monday

IBM stock was set for its worst day since the 1987 “Black Monday” market crash after the company issued a profit warning. The shares fell about 24% in morning trading as investors reacted to the update. IBM said performance in its software and infrastructure business came in below expectations during the second quarter. The article frames the move as the steepest decline since a landmark market event, highlighting how quickly guidance changes can reset sentiment. It also underscores the competitive pressure IBM faces in enterprise software and infrastructure, where results are closely tied to recurring demand and customer spending cycles.