Global sales of semiconductors continue to march to record highs even as growth has eased in recent months, the Semiconductor Industry Association reported late Friday. Sales of chips worldwide rose 13.8% to $122.7 billion from the year-ago quarter, and by 2% to $40.91 billion in September, for record levels in both the quarter and the month. "Three-quarters of the way through 2018, the global semiconductor industry is on pace to post its highest-ever annual sales, comfortably topping last year's record total of $412 billion," said John Neuffer, SIA president and chief executive, in a statement. "While year-to-year growth has tapered in recent months, September marked the global industry's highest-ever monthly sales, and Q3 was its top-grossing quarter on record," Neuffer said. For September, China sales showed the strongest growth, rising 26% to $11.36 billion from a year ago. Monthly sales for the Americas grew 15% to $7.99 billion from September of a year ago. In earnings for the September-ended quarter, chip makers such as Intel Corp. and Xilinx Inc. appear positioned to carry that momentum with strong forecasts, while forecasts from companies like Advanced Micro Devices Inc. and Texas Instruments Inc. disappointed. Even while chip sales continue to hit record levels, some fear that a glut of chips may develop amid easing demand. For the year, the PHLX Semiconductor Index , which had traded up as much as 15% earlier in the year, is down 8%, while the S&P 500 index is down 0.6% and the tech-heavy Nasdaq Composite Index is up 3.8%.