Shares of Williams-Sonoma Inc. /zigman2/quotes/202067350/composite WSM +0.82% rallied more than 9% in the extended session Thursday after the retailer said its online business experienced "breakout" growth in the latter part of the first quarter and "continues to accelerate," making up for store closures amid the coronavirus pandemic. Williams-Sonoma said it earned $35 million, or 45 cents a share, in the quarter, compared with $53 million, or 66 cents a share, in the year-ago period. Adjusted for one-time items, the company earned 74 cents a share, compared with 81 cents a year ago. Sales reached $1.24 billion, flat in comparison with a year ago, thanks to "a significant acceleration in e-commerce revenue growth to over 30%," the company said. Analysts polled by FactSet had expected earnings of 15 cents a share on sales of $1.1 billion. The company did not provide guidance due to the pandemic and "the continuing macroeconomic uncertainty that could impact its performance." Shares of Williams-Sonoma ended the regular trading day down 0.4%.