Creates a new watchlist or updates an existing one for a specific trading account. Manages collections of symbols for monitoring, enabling users to organize securities into named groups with customizable symbol lists.
Use Case: Build and maintain personalized watchlists for tracking favorite stocks, sector groups, or trading strategies within specific accounts.
OAuth2 Bearer token: obtain an access token from the token endpoint and send it in the Authorization header.
The unique identifier of the trading account (must be a valid account owned by the authenticated user)
Array of watchlist objects to create or update. Each watchlist must have a unique name within the array and a list of stock symbols (symbols must be unique within each watchlist). Both name and symbols are required.