A selloff in tech found its legs again, wiping out the Nasdaq and weighing on broader markets. Losses in tech overshadowed a rally in crude oil prices and gains in the financials sector after the banks' stress tests. Blue Apron (APRN) - Get Report opened for trading in its market debut on the New York Stock Exchange. The meal-kit delivery service was slightly higher than its issue price of $10 a share. Blue Apron sold 30 million shares in its IPO. Constellation Brands (STZ) - Get Report climbed after quarterly profit beat estimates. Revenue fell slightly shy of consensus. Beer sales rose 8%, while wine and spirits climbed 4%. Staples (SPLS) agreed to be acquired by private-equity firm Sycamore Partners for $6.9 billion. That comes a year after Staples' deal with Office Depot (ODP) - Get Report fell apart on regulatory concerns. The deal is expected to close by year's end.