why ibm stock price experience a sharp decrease on 2002/1/22

The closing price for International Business Machines (IBM) on January 22, 2002 was $54.11. It was down 3.3% for the day (down 3.3% from previous close). The latest price is $232.14.

DATEOPENHIGHLOWCLOSEVOLUME
January 22 2002
$55.95
$55.96
$54.03
$54.11
10,596,398
Daily pricing data for International Business Machines dates back to 1/2/1962, and may be incomplete.