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Prediction Market data is currently in beta. It is actively being worked on and improved, but may be unreliable. Polymarket data is live, and Kalshi data will be added soon.At least for the time being, this endpoint requires a Growth or Enterprise plan. Learn more.
Kalshi does not provide trader data. These endpoints only work with Polymarket data. Kalshi’s API does not expose individual trader information due to privacy considerations on their regulated exchange.

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Returns

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Arguments

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Query Example

Query comprehensive performance statistics about a specific trader: 
{
  predictionTraders(input: { 
    traderIds: ["0x02227b8f5a9636e895607edd3185ed6ee5598ff7:Polymarket"] 
  }) {
    alias
    protocol
    totalTradesCount
    totalVolumeUsd
    totalVolumeCT
    allTimeProfitUsd
    allTimeProfitCT
    biggestWinUsd
    biggestLossCT
    activeMarketsCount
    firstTradeTimestamp
    lastTradeTimestamp
  }
}
Example response
{
  "data": {
    "predictionTraders": [
      {
        "alias": "HorizonSplendidView",
        "totalTradesCount": 3891,
        "totalVolumeUsd": "21346770.014588",
        "totalVolumeCT": "21347078.158539",
        "allTimeProfitUsd": "1710754.682204",
        "allTimeProfitCT": "1710624.919679",
        "biggestWinUsd": "2369172.875606",
        "biggestLossCT": "1319295.162985",
        "activeMarketsCount": 3,
        "firstTradeTimestamp": 1770564381,
        "lastTradeTimestamp": 1773276976
      }
    ]
  }
}

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Usage Guidelines

  • Trader ID format: <address>:<protocol> (e.g., 0x02227b8f5a9636e895607edd3185ed6ee5598ff7:Polymarket)
  • USD vs CT fields: USD values are denominated in dollars, CT values in Conditional Tokens. For USDC markets, these are typically 1:1
  • Monetary precision: All monetary values returned as strings to maintain precision
  • Timestamps: Unix timestamps in seconds (convert with new Date(timestamp * 1000))
  • Batch queries: Query up to 100 traders in a single request for leaderboards
  • Linked addresses: Track traders using multiple wallets via linkedAddresses field

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Troubleshooting

If a trader ID returns no results, verify:
  • The trader ID format matches the protocol (Ethereum address for Polymarket)
  • The trader has actually made trades on the platform
  • The trader ID hasn’t been mistyped (addresses are case-insensitive but must be valid hex)
Try querying a known active trader first to confirm your API setup is working correctly.
USD values represent the dollar value of trades, while CT (Conditional Token) values represent the native token amounts. For most Polymarket markets using USDC, these values are identical. However:
  • CT values represent the raw blockchain token amounts
  • USD values are the dollar-equivalent at the time of trade
  • In USDC markets, 1 CT = 1 USD
Use USD values for financial reporting and CT values when analyzing on-chain activity.
Not all traders set up public profiles on prediction market platforms. Fields like alias, profileImageUrl, and profileUrl are optional and may be null for traders who:
  • Haven’t created a profile
  • Prefer to trade anonymously
  • Are using the platform programmatically
The primaryAddress and venueTraderId are always available as fallback identifiers.
Negative values in allTimeProfitUsd or allTimeProfitCT indicate the trader has net losses across all their resolved positions. This is calculated as:Total Profit = (Winnings from resolved positions) - (Total amount spent on positions)Note that this only includes resolved markets. Active positions are not factored into profit calculations until they settle.
While typically identical for USDC-based markets, these values can differ when:
  • Markets use different token denominations
  • Currency conversion rates have changed over time
  • The platform uses different pricing mechanisms
For Polymarket (USDC-based), expect these values to match. Significant differences may indicate data inconsistencies worth investigating.
activeMarketsCount shows how many prediction markets the trader currently has open positions in. This number:
  • Only counts markets that haven’t resolved yet
  • Includes any market where the trader holds conditional tokens
  • Decreases when markets resolve or when the trader exits all positions
A high active markets count suggests an actively diversified trader.
Trader statistics are updated in near real-time as trades occur on the blockchain. However:
  • There may be a 1-5 minute delay for data indexing
  • Profit calculations update when markets resolve
  • Profile information (alias, images) may take longer to sync if changed
For high-frequency trading applications, expect metrics like totalTradesCount and totalVolumeUsd to be current within a few minutes of blockchain confirmation.