Nikita Bier is stepping back as X’s product chief after 400 days, transitioning to an advisory role. During his tenure starting July 2025, he shipped nearly 30 new products, including a feature embedding live market data that drove an estimated $1 billion in trading volume within 48 hours. Financial metrics tell a grimmer story: advertising revenue fell to $1.8 billion in 2025 from $4.4 billion in 2022, while downloads declined 13% to 104 million. Bier also found himself at the center of multiple controversies, including a 120 million euro fine from Brussels for non-compliance with the Digital Services Act and accusations of suppressing crypto content, despite serving as an advisor to Solana.
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