Video: Dow Jones Industrial Average Sinks Over 500 Points

The Dow Jones Industrial Average moved sharply lower Friday amid worries about a trade war with China.

Stocks like Caterpillar (CAT) - Get Report , Boeing (BA) - Get Report , Nike (NKE) - Get Report and Goldman Sachs (GS) - Get Report fell 2.5-3.5%.

This caps off quite a volatile week for stocks. Here's how the Dow performed every day this week:

• Monday: down 459 points
• Tuesday: up 389 points
• Wednesday: up 231 points
• Thursday: down 241

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