LSEG (Refinitiv) Data APIs

LSEG Data and Analytics is the financial data business formerly known as Refinitiv, acquired by the London Stock Exchange Group and now operating under the LSEG name. It supplies market data, feeds, analytics, AI and workflow solutions, reporting more than 40,000 customers and 400,000 end users across approximately 190 markets, with exclusive access to Reuters news.

Exclusive access to Reuters is the asset that cannot be replicated. Market prices are available from many vendors and eventually converge, but a wire service with global reporting capacity is a different kind of holding, and for institutions where a headline moves a position before any price does, the news feed is the product rather than an accessory to it.

Being part of an exchange group changes the nature of the relationship. The same organisation that runs the London Stock Exchange also sells the data about it, which offers integration advantages and concentrates a customer's dependence in one supplier.

The Refinitiv name no longer appears on the site, which matters for anyone searching for it. Documentation and community material written under the old brand still describes the same APIs, but the commercial relationship and the roadmap now sit with LSEG, which is what a buyer is actually contracting with.