Stream Quote Changes

Streams the latest Quote information for the given Symbols. The first chunk in the stream is a full quote snapshot - subsequent chunks only contain fields of the quote object that have changed since the last chunk.

An invalid symbol name will result in a response of this form - {"Symbol":"BADEXAMPLESYMBOL","Error":"FAILED, EX_INVALID_SYMBOL"}

If the user is not entitled for the symbol requested, response will be of this form - {"Symbol":"EXAMPLESYMBOL","Error":"FAILED, EX_NOT_ENTITLED"}