Applied Materials Inc., the largest American producer of chipmaking gear, plunged in late trading after giving a disappointing sales and profit forecast, renewing concerns that the US trade dispute with China is weighing on demand. Revenue will be approximately $6.7 billion in the fiscal fourth quarter, the company said in a statement Thursday. Analysts had estimated $7.32 billion on average. Profit will be about $2.11 a share, excluding some items, compared with a projection of $2.38. The company is seeing less demand from customers in China, Chief Executive Officer Gary Dickerson said in an interview. It also faces delays in...