Intel chief executive Craig Barrett said Wednesday that he's not worried about semiconductor demand or his company's flagging stock price. Barrett, speaking at the Exchange eBusiness Summit in San Francisco, said the market was "overreacting" to a recent spate of discouraging news. Intel shares were off 81 cents to $36.75 Wednesday afternoon. Although hamstrung by the company's quiet period ahead of its 17 October earnings report, Barrett told analysts and reporters that Intel will make good on its promise to invest more than $6bn to develop and manufacture the next generation of high-performance microprocessors. Barrett said the market was overreacting to growth concerns about his company and the technology industry in general. "I wake up and see Yahoo! was hit because it only grew 90 percent this quarter," Barrett said. "I don't know what to call that other than an overreaction." In late September, Intel warned that it would not meet third-quarter sales estimates, blaming weak demand and tightening profit margins for the shortfall. Intel shares went into a predictable nosedive, falling from $63 a share to a 52-week low of $32.50 in less than three weeks. Several analysts cut the stock and lowered estimates, even though the world's largest chipmaker is still expected to post a profit of 38 cents a share in the quarter. However, the company said gross profit margins will be right around 62 percent, give or take a point, slightly below the 63 percent to 64 percent it had previously anticipated. Last quarter, Intel topped analysts' estimates, earning $3.5bn, or 50 cents a share, on sales of $8.3bn. Barrett also said he was encouraged by IBM's announcement Tuesday that it will invest $5bn to support its semiconductor business around the world. IBM plans to expand facilities in Vermont and Japan, and building a new chipmaking plant in New York. "Demand is white-hot in three critical segments -- chips for big servers, chips to power the explosion in Internet access devices and chips in the networking equipment that ties everything together," chief executive Lou Gerstner said in a release Tuesday. Intel shares hit a 52-week high of $75.81 in August. Twenty-five of the 31 analysts following the stock rate it either a "buy" or "strong buy". See Chips Central for daily hardware news, including interactive roadmaps for AMD, Intel and Transmeta. In baseball terms, Intel is in a slump. Product delays. Mounting competition. And a stock price stuck in the dugout. Is the all-star chip maker suddenly minor league? Jesse Berst will tell you what's troubling Intel and what it means for the company's future. Go to AnchorDesk UK for the news comment. To have your say online click on the TalkBack button and go to the ZDNet News forum. Let the editors know what you think in the Mailroom. And read what others have said.