Investors were spooked and the Dow Jones had its biggest drop of the year.
It came with the US considering duties on an additional 100 billion dollars in goods imported from China.
Even with the rebound, this was the worst week for the market in about two years.
Financial analysts said the latest drop was triggered by a combination of events that rattled investors.
Hollywood star Leonardo DiCaprio has told ITV News that many of the people responsible for "decimating" the economy "got away scot-free."