Request Option Chains
EClient.reqSecDefOptParams (
reqId: int. The ID chosen for the request
underlyingSymbol: String. Contract symbol of the underlying.
futFopExchange: String. The exchange on which the returned options are trading. Can be set to the empty string "" for all exchanges.
underlyingSecType: String. The type of the underlying security, i.e. STK
underlyingConId: int. The contract ID of the underlying security.
)
Requests security definition option parameters for viewing a contract’s option chain.