IBM stock fell 25%+ on Tuesday, sinking further than its previous worst day of October 19, 1987, after reporting preliminary Q2 results below estimates (CNBC)

CNBC:
IBM stock fell 25%+ on Tuesday, sinking further than its previous worst day of October 19, 1987, after reporting preliminary Q2 results below estimates  —  International Business Machines shares plummeted 25% on Tuesday after the hardware, software and consulting provider released preliminary …