#OrderTypes101 Trump’s trade war has threatened Americans’ retirement plans, such as 401(k)s, as it pummels Apple, which depends heavily on international supply chains. According to Howard Silverblatt, senior index analyst at S&P indices, those retirement plans are often invested in funds that track the S&P 500, and the AAPL (Apple stock) accounts for 6% of the S&P 500’s value.