Applied Materials Inc. suffered the worst single-day stock decline in five years after giving a disappointing sales and profit forecast, renewing concerns that the US trade dispute with China is weighing on demand.

Applied Materials forecast fourth-quarter revenue and profit below estimates on Thursday, citing weak demand in China and erratic orders from customers facing uncertainty due to tariffs, sending its shares down nearly 13% in extended trading.

The semiconductor-equipment maker said it expects adjusted per-share earnings of $2.11, give or take 20 cents, compared with $2.32 in the year-ago period.