According to Business Insider, Apple shares slid during Monday morning trading.
After President Donald Trump proposed even more tariffs on Chinese imports last week, Apple warned that a wide range of their products would go up in price.
On Sept. 10th, Apple's stock dropped about 2-percent, only days after they said prices of the Apple Watch and AirPods could increase.
Both are important product lines for Apple, but the company did not include the iPhone or iPad in their statement.