The U.S. stock market is having its worst quarter since the great depression and much of it has to do with President Donald Trump’s disruptive nature.

Dow tanks more than 450 points, Nasdaq closes in correction and Amazon leads tech lower.

On the first trading day of April, which is also the first trading day of the second quarter, stocks tanked thanks to a combination of anxiety about a trade war, and fears about the tech industry getting hit with regulation.

The Dow Jones industrial average plunged 458.92 points to close at 23,644.19, with Intel as the worst-performing stock in the index.

The 30-stock index fell as much as 758.59 points and hit a new low for the year on Monday, falling at one point below the intraday low touched during the slide in February.

The S&P 500 dropped 2.2 percent to 2,581.88 and re-entered correction territory, with tech falling 2.5 percent.

The index also closed below its 200-day moving average, a key technical level, for the first time since June 2016.

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The Nasdaq composite dropped 2.7 percent to 6,870.12 as Amazon declined 5.2 percent.