Wall Street got walloped Wednesday as the Dow Jones industrial average suffered its worst day since February.

The blue-chip index plunged more than 830 points — or 3.2 percent — at its close as traders fretted about raising interest rates and the sell-off of once-high-flying tech stocks.

Amazon’s stock plunged 6.1 percent while Apple’s stock shed 4.6 percent in a late-day sell-off.

Other so-called FAANG stocks got beat up as well.

Facebook fell 4.1 percent while Netflix and Google parent Alphabet were down 8.4 percent and 5.1 percent, respectively.

It was the fifth negative day for the S&P 500, and the longest losing streak during the Trump presidency.

“After five down days, institutional investors have to act,” Michael Antonelli, managing director at Robert W. Baird, told The Post, explaining the acceleration of Wednesday’s sell-off.

“Volumes are surging because people are sitting up and acting,” he said.

The S&P 500 and tech-heavy Nasdaq joined in Wednesday’s carnage, falling 3.3 percent and 4.1 percent, respectively.

Markets have sold off in recent days as the rate on the 10-year Treasury note flirted with 3.2 percent — its highest level in seven years. Bond yields move in the opposite direction to price.

The moves come as positive economic data — including the unemployment rate standing at 3.7 percent, its lowest level since 1969 — stoked investor fears that the Federal Reserve would raise rates aggressively to prevent the economy from overheating.

“The market is starting to believe the Federal Reserve a bit more and starting to price [rate hikes] in,” Mona Mahajan, US investment strategist at Allianz Global Investors, told The Post.