Hewlett Packard shares fell $1.15 (€1.26) to $19.35 (€21.25) amidst the continuing confusion and controversy surrounding its merger with Compaq.
Shares fell nearly 6% after the computer and printer company reported lower than expected revenues for the final quarter before its controversial purchase of Compaq Computer Corporation.
HP said revenues for the second quarter ended April 30 fell to $10.6bn (€11.64bn) from $11.7bn (€12.85bn) a year earlier.
Executive announced that they were not losing ground to competitors in the wake of the recent merger and HP also said that it saw no signs of impending meaningful improvement in the industry until 2003.
Lehman Brothers analyst Dan Niles is reported to have said: "Everybody's revenue forecast for the company is going to come down".
Revenue fell in all division of the company's business.
Hewlett Packard employs 4,500 staff in the Republic and Northern Ireland.