> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Download stored equity volatility-of-variance curves.

> Returns the stored maturity nodes and decimal volatility-of-variance values for the requested
            underlying equity/index identifiers on the exact market date. Always applies provider fallback in this
            order: selected accessible environments in request order, organisation data, then default data, like GetEquityVolSurfaces.
            Omitting environment selection starts at organisation data. ProviderId on each curve identifies its actual
            source. No earlier-date lookup is applied. Curves missing from all providers are omitted, so an empty result
            can be successful; no zero curve is synthesized. Unsupported identifiers fail the complete request. This operation is read-only.
            Use GetMktDataContainer with volatility-swap contracts to inspect the effective pricing data instead.



## OpenAPI

````yaml /risk-and-pricing/atoti-risk-services/apis-endpoints/openapi/openapi.mintlify.json post /api/MarketData/GetEqVolOfVarCurves
openapi: 3.0.4
info:
  title: Derivitec Api 1.0
  version: '1.0'
servers:
  - url: https://api.riskportal.activeviam.com
security:
  - oauth2: []
  - apikey: []
tags:
  - name: AdminUser
  - name: AtotiReport
  - name: AtotiSession
  - name: BloombergOAuth
  - name: Bond
  - name: BondYieldCurvePage
  - name: BookAccess
  - name: Books
  - name: Commodity
  - name: Counterparties
  - name: Currencies
  - name: Equity
  - name: EquityDividend
  - name: EquityPage
  - name: FeatureFlag
  - name: Fx
  - name: FxPage
  - name: GroupAccess
  - name: Home
  - name: LegacyPosition
  - name: MarketData
  - name: MarketDataProvider
  - name: MarketDataProviderAccess
  - name: Meta
  - name: Notification
  - name: Organisation
  - name: PnLReport
  - name: PortfolioAccess
  - name: Portfolios
  - name: Position
  - name: PositionFilter
  - name: PricingEnvironment
  - name: PricingEnvironmentAccess
  - name: RateAsset
  - name: RateAssetPage
  - name: Report
  - name: ReportDefinition
  - name: ReportHistoryLauncherQuery
  - name: ReportLauncher
  - name: ReportQuery
  - name: ReportQueryViewUser
  - name: ReportRestriction
  - name: ReportView
  - name: RiskReport
  - name: Tradable
  - name: TradeBooking
  - name: User
  - name: VarReport
  - name: VarReportQuery
  - name: YieldCurvePage
paths:
  /api/MarketData/GetEqVolOfVarCurves:
    post:
      tags:
        - MarketData
      summary: Download stored equity volatility-of-variance curves.
      description: >-
        Returns the stored maturity nodes and decimal volatility-of-variance
        values for the requested
                    underlying equity/index identifiers on the exact market date. Always applies provider fallback in this
                    order: selected accessible environments in request order, organisation data, then default data, like GetEquityVolSurfaces.
                    Omitting environment selection starts at organisation data. ProviderId on each curve identifies its actual
                    source. No earlier-date lookup is applied. Curves missing from all providers are omitted, so an empty result
                    can be successful; no zero curve is synthesized. Unsupported identifiers fail the complete request. This operation is read-only.
                    Use GetMktDataContainer with volatility-swap contracts to inspect the effective pricing data instead.
      operationId: GetEqVolOfVarCurves
      requestBody:
        description: >-
          Non-empty qualified equity/index identifiers, the date-only
          MarketDate, and either
                      MarketDataEnvironmentNames in priority order, MarketDataEnvironmentName, or ProviderId for readable environments; omit all to start at
                      organisation data. Organisation and default provider fallback always apply.
        content:
          application/json-patch+json:
            schema:
              $ref: '#/components/schemas/ApiGetEqVolOfVarCurvesRequest'
          application/json:
            schema:
              $ref: '#/components/schemas/ApiGetEqVolOfVarCurvesRequest'
          text/json:
            schema:
              $ref: '#/components/schemas/ApiGetEqVolOfVarCurvesRequest'
          application/*+json:
            schema:
              $ref: '#/components/schemas/ApiGetEqVolOfVarCurvesRequest'
      responses:
        '200':
          description: >-
            Stored curves, or an unsuccessful response describing unsupported
            identifiers.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiGetEqVolOfVarCurvesResponse'
        '400':
          description: BadRequest
        '401':
          description: Unauthorized
        '403':
          description: Forbidden
      security:
        - oauth2: []
        - apikey: []
components:
  schemas:
    ApiGetEqVolOfVarCurvesRequest:
      required:
        - $type
      type: object
      properties:
        provider_id:
          type: string
          description: >-
            Opaque identifier of a single market-data provider to use instead of
            either environment-name option.
          nullable: true
        entity_access_type:
          enum:
            - view
            - edit
            - owner
            - blocked
          type: string
          description: >-
            Access classification associated with the selected market-data
            environment.
        market_data_environment_names:
          type: array
          items:
            type: string
          description: >-
            Names of the market-data environments to use. Do not combine this
            list with the single-name or provider-ID alternatives.
          nullable: true
        market_data_environment_name:
          type: string
          description: >-
            Single market-data environment name to use instead of
            `market_data_environment_names` or `provider_id`.
          nullable: true
          example: Example market data
        identifiers:
          type: array
          items:
            $ref: '#/components/schemas/InstrumentIdentifier'
          description: >-
            Non-empty collection of qualified underlying equity/index
            identifiers, using the same identifier
                        namespaces as uploads. Duplicate identifiers are returned once; unsupported identifiers fail the request.
          nullable: true
        market_date:
          type: string
          description: >-
            Exact date-only reference date of the stored curves. Supply
            midnight; no timezone conversion or
                        search for an earlier observation is performed. The time component is ignored.
          format: date-time
          example: '2026-10-05T00:00:00Z'
        $type:
          type: string
          enum:
            - >-
              Derivitec.Web.Core.MarketData.ApiGetEqVolOfVarCurvesRequest,
              Derivitec.Web.Core
      additionalProperties: false
      description: >-
        Requests equity volatility-of-variance curves using market-data
        environment fallback.
    ApiGetEqVolOfVarCurvesResponse:
      required:
        - $type
      type: object
      properties:
        is_success:
          type: boolean
          description: >-
            Whether the operation completed successfully. The default is `true`;
            error outcomes set it to `false`.
          example: true
        error_messages:
          type: array
          items:
            type: string
          description: >-
            Messages explaining operation-level failures. The collection is
            empty by default.
          nullable: true
        eq_vol_of_var_curves:
          type: array
          items:
            $ref: '#/components/schemas/EquityVolOfVarCurve'
          description: >-
            Curves selected by provider priority, using the requested identifier
            namespaces. ProviderId identifies
                        the source actually selected: preferred environment, organisation or default data. Each curve has calendar-day
                        maturity offsets and decimal volatility values. Identifiers with missing curves across all providers are omitted;
                        an empty list is successful when no marks exist on the requested date. No synthetic zero curves are returned.
          nullable: true
        $type:
          type: string
          enum:
            - >-
              Derivitec.Web.Core.MarketData.ApiGetEqVolOfVarCurvesResponse,
              Derivitec.Web.Core
      additionalProperties: false
      description: >-
        Stored volatility-of-variance curves for requested equity/index
        identifiers and an exact market date.
    InstrumentIdentifier:
      description: >-
        Instrument code qualified by an identifier namespace and optional market
        code.
      discriminator:
        propertyName: $type
        mapping:
          Derivitec.Web.Core.MarketData.InstrumentIdentifier, Derivitec.Web.Core: '#/components/schemas/InstrumentIdentifierMintlifyShape'
          Derivitec.Web.Core.MarketData.InstrumentInfo, Derivitec.Web.Core: '#/components/schemas/InstrumentInfo'
      oneOf:
        - $ref: '#/components/schemas/InstrumentIdentifierMintlifyShape'
        - $ref: '#/components/schemas/InstrumentInfo'
    EquityVolOfVarCurve:
      required:
        - $type
      type: object
      properties:
        provider_id:
          type: string
          description: >-
            Market-data provider code recorded as the source of the
            contribution. Defaults to Derivitec.
          nullable: true
        derivitec_created:
          type: string
          description: Timestamp at which the market-data record was created.
        derivitec_modified:
          type: string
          description: Optional timestamp of the record's latest modification.
          nullable: true
        uploaded_date_time:
          type: string
          description: >-
            Optional timestamp at which the contribution was uploaded.
            UploadRateAssets ignores the supplied value on each rate asset and
            stores the current UTC time.
          nullable: true
        derivitec_modified_by:
          type: string
          description: >-
            Principal recorded as the latest modifier. UploadRateAssets ignores
            the supplied value on each rate asset and stores the authenticated
            user identifier.
          nullable: true
        uploaded_by:
          type: string
          description: >-
            Principal recorded as the uploader. UploadRateAssets ignores the
            supplied value on each rate asset and stores the authenticated user
            identifier.
          nullable: true
        rolled:
          type: boolean
          description: Whether the contribution has been rolled.
          example: false
        maturities:
          type: array
          items:
            type: integer
            format: int32
          description: >-
            Strictly increasing maturity offsets from ReferenceDate, in calendar
            days, corresponding by position to the volatility values.
          nullable: true
        reference_date:
          type: string
          description: Reference date of the volatility curve.
          format: date-time
        vols:
          type: array
          items:
            type: number
            format: double
          description: >-
            Volatility values as decimals; 0.20 means 20%. Values correspond by
            position to maturities.
          nullable: true
        spot_ref:
          type: number
          description: Optional spot reference carried by the volatility curve.
          format: double
          nullable: true
        eq_vol_of_var_index_id:
          $ref: '#/components/schemas/InstrumentIdentifier'
        $type:
          type: string
          enum:
            - >-
              Derivitec.Web.Core.MarketData.EquityVolOfVarCurve,
              Derivitec.Web.Core
      additionalProperties: false
      description: >-
        Volatility-of-variance curve for an identified equity
        volatility-of-variance index.
    InstrumentIdentifierMintlifyShape:
      required:
        - $type
      type: object
      properties:
        code:
          type: string
          description: Instrument code interpreted in the selected identifier namespace.
          nullable: true
        identifier_type:
          enum:
            - Derivitec
            - Ric
            - Bloomberg
            - Isin
            - Figi
            - Sedol
            - RedCode
            - RedPairCode
            - BloombergYellow
            - XIgniteCode
            - CBondsId
            - EdiSecId
            - EdiSymbol
            - Cusip
            - NotSet
          type: string
          description: Namespace that determines how the instrument code is interpreted.
        market_identification_code:
          type: string
          description: >-
            Optional market identification code that further qualifies the
            instrument code.
          nullable: true
        $type:
          type: string
          enum:
            - >-
              Derivitec.Web.Core.MarketData.InstrumentIdentifier,
              Derivitec.Web.Core
      additionalProperties: false
      description: >-
        Instrument code qualified by an identifier namespace and optional market
        code.
    InstrumentInfo:
      required:
        - $type
      type: object
      properties:
        code:
          type: string
          description: Instrument code interpreted in the selected identifier namespace.
          nullable: true
        identifier_type:
          enum:
            - Derivitec
            - Ric
            - Bloomberg
            - Isin
            - Figi
            - Sedol
            - RedCode
            - RedPairCode
            - BloombergYellow
            - XIgniteCode
            - CBondsId
            - EdiSecId
            - EdiSymbol
            - Cusip
            - NotSet
          type: string
          description: Namespace that determines how the instrument code is interpreted.
        market_identification_code:
          type: string
          description: >-
            Optional market identification code that further qualifies the
            instrument code.
          nullable: true
        name:
          type: string
          description: Human-readable name of the identified instrument.
          nullable: true
        $type:
          type: string
          enum:
            - Derivitec.Web.Core.MarketData.InstrumentInfo, Derivitec.Web.Core
      additionalProperties: false
      description: Instrument identifier with a human-readable instrument name.
  securitySchemes:
    oauth2:
      type: oauth2
      description: >-
        OAuth2 access-token requested from AWS Cognito and provided as a Auth
        Bearer header
      flows:
        implicit:
          authorizationUrl: https://auth.riskportal.derivitec.com/oauth2/authorize
          scopes: {}
    apikey:
      type: apiKey
      description: API-Key requested via the site and provided as a header
      name: x-api-key
      in: header

````