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The Teamsters said the workers, who voted to authorize strikes in recent days, joined picket lines after Amazon ignored a Dec. 15 deadline the union set for contract negotiations.

Analysts are betting that further market-share gains and increased profit contributions from Walmart’s higher-margin ancillary businesses will extend the stock’s rally.

Amazon has long been a target of worker’s rights advocates and labor unions, who say the company pushes its employees too hard in the name of getting packages to customers quickly.

Amazon launched an online storefront designed to compete with Temu, the low-cost shopping app that gained traction with shoppers who trade longer shipping times for rock-bottom prices.

Silicon Valley is bracing for a different relationship with the U.S. government as Donald Trump prepares to return to the White House.

Returnless refunds are a tool that more retailers are using to keep online shoppers happy and to reduce shipping fees, processing time and other ballooning costs from returned products.

“As we get into the holiday season, we’re excited about what we have in store for customers,” CEO Andy Jassy said in a statement.

Walmart Inc. will start delivering prescriptions to U.S. homes in as little as 30 minutes, a move that’s intended to grab a bigger slice of online spending and compete against Amazon.com Inc.

Amazon on Oct. 16 said it was investing in small nuclear reactors, coming just two days after a similar announcement by Google, as both tech giants seek new sources of carbon-free electricity.

Amazon.com Inc. unveiled a new artificial intelligence tool designed to help drivers locate packages in cluttered vans.