Nearly every market move over the last two weeks has been attributed to the British referendum on whether the United Kingdom should remain with or leave the European Union.
A poll showed Brits might want to leave? Down go stocks. Then it looked like the U.K. would stay in the political and economic bloc? Here's 200 points to the upside for the Dow Jones industrial average.
Now that the U.K. has officially voted in favor of leaving, markets are going wild. The Dow shed 500 points right out of the gate, before paring some of those losses. The British pound also posted its largest one-day fall ever, before recovering slightly.
And it's not just trading desks who cared about Thursday's referendum. Federal Reserve Chair Janet Yellen said earlier this month that a British exit from the EU "could have consequences in turn for the U.S. economic outlook."