Dana Mattioli is a reporter covering Amazon for The Wall Street Journal in New York. In this role, she has led investigations into the retail giant's business practices, market power and antitrust ...

Amazon (AMZN) is increasing ad spending on Elon Musk-owned X, formerly Twitter, in a major shift after the ecommerce giant removed much of its ...

and Dana Mattioli of The Wall Street Journal reports. OpenAI co-founder Sam Altman is high on Musk’s list of rivals, with people close to Musk saying he despises Altman and has called OpenAI a ...

Paul Vigna and Stephen Grocer continue to dissect the fallout from the Starwood-Anbang deal with Dana Mattioli ... the latest fraud story that has Wall Street buzzing.

The Wall Street Journal’s Juliet Chung, Raffaele Huang and Dana Mattioli report. Shou Chew, chief executive of the popular video app, initiated messages with the billionaire in recent weeks ...

report Will Connors and Dana Mattioli at The Wall Street Journal. "It remains unclear whether Facebook is interested in placing a bid," they add, but "the meeting could reignite speculation that ...