Elon Musk’s X is quietly expanding its footprint in on-platform market data with Cashtags, a feature that has already generated roughly $1 billion in trading volume globally since its late-tuesday debut, according to aggregated data from X’s trading pilot. Cashtags let users attach a ticker to a post and immediately pull up live price charts and related posts, aiming to turn X into a more comprehensive hub for market information and discussion.

The rollout is currently limited to US and Canadian users on iPhones, and it sits within Musk’s broader ambition to transform X into an “everything app” that could someday include peer-to-peer payments and e-commerce. With more than 550 million users each month, X’s scale gives it…