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

# Position Concentration

> Returns position concentration analysis and top holders for a market. Only available for Polymarket and Limitless.



## OpenAPI

````yaml GET /v1/api/positions/concentration
openapi: 3.1.0
info:
  title: Dot Prediction API
  description: >-
    A unified API for accessing prediction market data across Kalshi,
    Polymarket, and Limitless.
  version: 1.0.0
servers:
  - url: https://api.dotprediction.io
security:
  - apiKey: []
paths:
  /v1/api/positions/concentration:
    get:
      tags:
        - Analytics
      summary: Position concentration
      description: >-
        Returns position concentration analysis and top holders for a market.
        Only available for Polymarket and Limitless.
      operationId: getPositionConcentration
      parameters:
        - name: provider
          in: query
          required: true
          description: Platform to query.
          schema:
            type: string
            enum:
              - polymarket
              - limitless
        - name: market_id
          in: query
          required: true
          description: The market ID to analyze.
          schema:
            type: string
        - name: limit
          in: query
          required: false
          description: Max results to return (default 20, max 100).
          schema:
            type: integer
            default: 20
            maximum: 100
      responses:
        '200':
          description: Position concentration data.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PositionConcentrationResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: 0d5813fe-a3df-4eee-bda5-8e01bfe0683a
        '500':
          $ref: 13256dda-f2cf-48d5-853d-eda20215fa08
components:
  schemas:
    PositionConcentrationResponse:
      type: object
      properties:
        market_id:
          type: string
        platform:
          type: string
        title:
          type: string
        concentration:
          $ref: '#/components/schemas/ConcentrationStats'
        top_holders:
          type: array
          items:
            $ref: '#/components/schemas/PositionHolder'
        meta:
          type: object
          properties:
            platforms:
              type: array
              items:
                type: string
            request_time:
              type: integer
              format: int64
            data_completeness:
              type: string
            trades_analyzed:
              type: integer
    ConcentrationStats:
      type: object
      properties:
        top_10_share:
          type: number
        top_20_share:
          type: number
        hhi:
          type: number
        total_holders:
          type: integer
        total_shares:
          type: number
    PositionHolder:
      type: object
      properties:
        rank:
          type: integer
        address:
          type: string
        display_name:
          type: string
        outcome:
          type: string
        shares:
          type: number
        share_of_total:
          type: number
        current_value:
          type: number
        entry_price_avg:
          type: number
        unrealized_pnl:
          type: number
        trade_count:
          type: integer
        first_trade:
          type: integer
          format: int64
        last_trade:
          type: integer
          format: int64
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            status:
              type: integer
              description: HTTP status code.
            message:
              type: string
              description: Human-readable error message.
            resolution:
              type: string
              description: Suggested action to resolve the error.
            error_text:
              type: string
              description: Detailed error information.
  responses:
    BadRequest:
      description: Invalid request parameters.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    Unauthorized:
      description: Missing or invalid API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    apiKey:
      type: apiKey
      in: header
      name: X-API-Key
      description: >-
        API key for authentication. Generate one via the dashboard or the
        `/v1/api/auth/api-keys` endpoint.

````