Shares of Cyrix Corp plunged $7 to $21.50 in early heavy trading yesterday after the company said its profit and operating margins would likely be below expectations in the first half of 1995: chief executive Jerry Rogers said With current price pressures and low volumes on the higher frequencies, we’re preparing for a difficult first half, with much lower Cx486 volumes than expected because of a hiatus to redesign the chip to improve yields; initial testing of the M1 has had positive results, the company said.
