Vendor Licence and Data Usage Rights

Buying access to a dataset is not the same as owning unrestricted rights to use it however a firm likes. Vendor licences typically spell out narrower permissions: whether the data can be used only for internal research or also to generate live trading signals, whether derived outputs (like a factor built from the raw data) can be shared with clients or redistributed, how many users or seats may access it, and how long the data must be retained or deleted after the contract ends. A dataset licensed for "academic research only," for instance, cannot legally be plugged into a production trading system, no matter how useful the backtest results look.

Violating these terms is a real business risk, not a formality — vendors audit usage, and violations can mean contract termination, financial penalties, or exclusion from future access, sometimes discovered only after a strategy built on the data is already running. Because licence terms vary enormously between vendors and even between products from the same vendor, a firm's research and compliance teams typically maintain a registry mapping each dataset to its specific permitted uses, so a researcher can check before building a signal rather than after it's already gone live.