File: cqg_api/quant/quant.proto
Request subscription to options implied volatility.
Response: ImpliedVolReport
Supported kinds: KIND_SUBSCRIBE, KIND_DROP
•request_type_id = 251
•request_protocol_version = 1
Type: string
Description: Select target options by option instrument group.
Either calls or puts can be specified, no difference.
Example: “C.US.EP” or “P.US.EP14”.