Texas Instruments Inc. shares slid as much as 6.9% after the chipmaker gave a disappointing earnings forecast for the current period, hurt by still-sluggish demand and higher manufacturing costs.

Texas Instruments forecast first-quarter profit below analysts' estimates on Thursday, as the analog chipmaker grapples with an inventory buildup in its key automotive and industrial markets. Shares of the over 90-year-old company fell about 4% in extended trading after TI also forecast first-quarter revenue largely in line with estimates,

Texas Instruments shares tumbled Friday, leading other analog chipmaker stocks lower after the company’s disappointing profit forecast raised worries that a recovery for analog chips could be slower than anticipated.

TXN's Q4 top line is likely to have been hurt by a fall in factory loading, while increased manufacturing costs are likely to have weighed on the bottom line.