Technology stocks dipped yesterday, shaken by sales warnings from telecom giant WorldCom and speciality chip maker Altera Corp. Blue Chips were also hurt, struggling off session lows as consumer products giant Procter & Gamble continued to suffer from Tuesday's profit warning and brokerage stocks slipped on negative analysts' comments.

The technology-packed Nasdaq Composite Index tumbled more than 2 per cent early in the session, popped briefly into positive territory but then fell again.

WorldCom fell $4.81 to $18.94 or just more than 20 per cent after cutting its profit and revenue growth outlook through 2001 in the face of increased competition and higher spending. Its decline weighed on other telecom shares and send the North America Telecom Index down 4.5 per cent to 1,246.97.