> ## Documentation Index > Fetch the complete documentation index at: https://docs.deribit.com/llms.txt > Use this file to discover all available pages before exploring further. # markprice.options.(index_name) > Options mark price updates for the given `index_name`. Use this channel to receive mark prices for options under the given index, useful for valuation, risk monitoring, and P&L calculations. ## AsyncAPI ````yaml specifications/deribit_asyncapi.json markprice.options.(index_name) id: markprice.options.(index_name) title: 'markprice.options.(index_name) ' description: > Options mark price updates for the given `index_name`. Use this channel to receive mark prices for options under the given index, useful for valuation, risk monitoring, and P&L calculations. servers: - id: production protocol: wss host: deribit.com/ws/api/v2 bindings: [] variables: [] - id: testnet protocol: wss host: test.deribit.com/ws/api/v2 bindings: [] variables: [] address: markprice.options.(index_name) parameters: - id: index_name jsonSchema: type: string description: >- Index identifier, matches (base) cryptocurrency with quote currency **Allowed values:** `btc_usd`, `eth_usd`, `ada_usdc`, `algo_usdc`, `avax_usdc`, ... (total 47 values) enum: - btc_usd - eth_usd - ada_usdc - algo_usdc - avax_usdc - bch_usdc - bnb_usdc - btc_usdc - btcdvol_usdc - buidl_usdc - doge_usdc - dot_usdc - eurr_usdc - eth_usdc - ethdvol_usdc - link_usdc - ltc_usdc - near_usdc - paxg_usdc - shib_usdc - sol_usdc - steth_usdc - ton_usdc - trump_usdc - trx_usdc - uni_usdc - usde_usdc - usyc_usdc - xrp_usdc - btc_usdt - eth_usdt - eurr_usdt - sol_usdt - steth_usdt - usdc_usdt - usde_usdt - btc_eurr - btc_usde - btc_usyc - eth_btc - eth_eurr - eth_usde - eth_usyc - steth_eth - paxg_btc - drbfix-btc_usdc - drbfix-eth_usdc description: >- Index identifier, matches (base) cryptocurrency with quote currency **Allowed values:** `btc_usd`, `eth_usd`, `ada_usdc`, `algo_usdc`, `avax_usdc`, ... (total 47 values) type: string required: true deprecated: false bindings: [] operations: - &ref_2 id: send_subscribe_markprice_options_index_name title: Send subscribe request for markprice description: Client sends subscription request for markprice updates type: send messages: - &ref_4 id: subscription_message contentType: application/json payload: - name: Subscription Notification Data description: Server sends subscription notification data type: object properties: - name: data type: object required: true properties: - name: instrument_name type: string description: Unique instrument identifier required: false - name: mark_price type: number description: The mark price for the instrument required: false - name: iv type: number description: Value of the volatility of the underlying instrument required: false - name: timestamp type: integer description: The timestamp (milliseconds since the Unix epoch) required: false headers: [] jsonPayloadSchema: type: object description: Response containing notification data properties: data: type: object description: '' properties: instrument_name: type: string description: Unique instrument identifier example: BTC-PERPETUAL x-parser-schema-id: mark_price: description: The mark price for the instrument type: number x-parser-schema-id: iv: description: Value of the volatility of the underlying instrument type: number x-parser-schema-id: timestamp: type: integer example: 1536569522277 description: The timestamp (milliseconds since the Unix epoch) x-parser-schema-id: required: [] additionalProperties: false x-parser-schema-id: required: - data additionalProperties: false x-parser-schema-id: title: Subscription Notification Data description: Server sends subscription notification data example: |- { "data": [ { "timestamp": 1622470378005, "mark_price": 0.0333, "iv": 0.9, "instrument_name": "BTC-2JUN21-37000-P" }, { "timestamp": 1622470378005, "mark_price": 0.117, "iv": 0.9, "instrument_name": "BTC-4JUN21-40500-P" }, { "timestamp": 1622470378005, "mark_price": 0.0177, "iv": 0.9, "instrument_name": "BTC-4JUN21-38250-C" }, { "timestamp": 1622470378005, "mark_price": 0.0098, "iv": 0.9, "instrument_name": "BTC-1JUN21-37000-C" }, { "timestamp": 1622470378005, "mark_price": 0.0371, "iv": 0.9, "instrument_name": "BTC-4JUN21-36500-P" } ] } bindings: [] extensions: - id: x-parser-unique-object-id value: subscription_message bindings: [] extensions: &ref_0 - id: x-parser-unique-object-id value: markprice.options.(index_name) - &ref_1 id: receive_markprice_options_index_name_updates title: Receive markprice updates description: Client receives markprice update notifications type: receive messages: - &ref_3 id: subscribe_request contentType: application/json payload: - name: Subscription Request description: >- Client sends subscription request to subscribe to notification channel. Please refer to [Notification page](https://deribit.mintlify.app/articles/notifications) for more information. type: object properties: [] headers: [] jsonPayloadSchema: properties: {} additionalProperties: false x-parser-schema-id: title: Subscription Request description: >- Client sends subscription request to subscribe to notification channel. Please refer to [Notification page](https://deribit.mintlify.app/articles/notifications) for more information. example: |- { "jsonrpc": "2.0", "method": "public/subscribe", "id": 42, "params": { "channels": [ "markprice.options.(index_name)" ] } } bindings: [] extensions: - id: x-parser-unique-object-id value: subscribe_request bindings: [] extensions: *ref_0 sendOperations: - *ref_1 receiveOperations: - *ref_2 sendMessages: - *ref_3 receiveMessages: - *ref_4 extensions: - id: x-parser-unique-object-id value: markprice.options.(index_name) securitySchemes: [] ````