New symbol fields on options activity events

Broker API

Options activity (V2) events now carry additional instrument identifiers:

• symbol, contract_symbol, and cusip on the CommonOptionsActivityV2 schema.
• A new OPCSHActivityV2 activity detail schema, added to the ActivityV2DetailNTA variants.

Affected Endpoints

• GET /v2beta1/accounts/{account_id}/events/activities/{event_id}
• GET /v2beta1/events/activities