Dow’s worst day since February; European markets close down by 2%, dragged lower by the travel sector 
It was one of the wildest days of the year for the U.S. stock market with technology shares as the battleground. Big Tech took a big hit to start the day on concerns about rising inflation and high valuations. The selling eventually spread to the rest of the market as the day went on. 
But in an odd twist, tech shares rebounded in the afternoon as investors went back into names like Amazon and Netflix and left the rest of the market in the red. 
The tech-heavy Nasdaq Composite eventually ended the roller-coaster session down less than 0.1% at 13,389.43 after shedding 2.2% at its low of the day. The Dow Jones Industrial Average dropped 473.66 points, or 1.4%, to 34,269.16 for its worst day since February 26. Travelers Companies and Home Depot led the declines in the 30-stock Dow. The S&P 500 slid 0.9% to 4,152.10 as 10 out of 11 sectors registered losses. 

The pan-European Stoxx 600 ended the session down by 2%, with travel and leisure stocks plunging 5.7% to lead losses, as all sectors and major bourses slid into negative territory. 
Earnings came from Ubisoft and Thyssenkrupp before the bell, causing shares of both companies to fall 2% and 10.2% respectively. At the bottom of the European blue chip index, meanwhile, Sweden’s Evolution Gaming plunged 13.8% after announcing the pricing of block trades. 
Source: CNBC