{ "$schema": "http://json-schema.org/draft-07/schema#", "$id": "https://developer.tastytrade.com/schemas/instruments/EquityOption", "title": "EquityOption", "type": "object", "properties": { "active": { "description": "", "type": "boolean" }, "days-to-expiration": { "description": "", "type": "integer", "format": "int32" }, "exercise-style": { "description": "", "type": "string" }, "expiration-date": { "description": "", "type": "string", "format": "date" }, "expiration-type": { "description": "", "type": "string" }, "expires-at": { "description": "", "type": "string", "format": "date-time" }, "halted-at": { "description": "", "type": "string", "format": "date-time" }, "instrument-type": { "description": "", "type": "string" }, "is-closing-only": { "description": "", "type": "boolean" }, "listed-market": { "description": "", "type": "string" }, "market-time-instrument-collection": { "description": "", "type": "string" }, "old-security-number": { "description": "", "type": "string" }, "option-chain-type": { "description": "", "type": "string" }, "option-type": { "description": "", "type": "string" }, "root-symbol": { "description": "", "type": "string" }, "settlement-type": { "description": "", "type": "string" }, "shares-per-contract": { "description": "", "type": "integer", "format": "int32" }, "stops-trading-at": { "description": "", "type": "string", "format": "date-time" }, "streamer-symbol": { "description": "", "type": "string" }, "strike-price": { "description": "", "type": "number", "format": "double" }, "symbol": { "description": "", "type": "string" }, "underlying-symbol": { "description": "", "type": "string" } }, "description": "EquityOption model" }