Skip to main content
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.

​
Returns

​
Arguments

​
Example Query

{
  predictionTraderBars(input: {
    traderId: "0x02227b8f5a9636e895607edd3185ed6ee5598ff7:Polymarket"
    from: 1772658000
    to: 1773349275
    resolution: day1
  }) {
    bars {
      t
      trades
      buys
      sells
      uniqueMarkets
      volumeUsd
      buyVolumeUsd
      sellVolumeUsd
      wins
      losses
      realizedPnlUsd
      cumulativeRealizedPnlUsd
    }
  }
}
Example Response (truncated)
{
  "data": {
    "predictionTraderBars": {
      "bars": [
        {
          "t": 1772582400,
          "trades": 511,
          "buys": 510,
          "sells": 1,
          "uniqueMarkets": 1,
          "volumeUsd": "4708891.840898",
          "buyVolumeUsd": "1169859.482646",
          "sellVolumeUsd": "3539032.358252",
          "wins": 1,
          "losses": 0,
          "realizedPnlUsd": "2369172.875606",
          "cumulativeRealizedPnlUsd": "2369172.875606"
        },
        {
          "t": 1772755200,
          "trades": 273,
          "buys": 273,
          "sells": 0,
          "uniqueMarkets": 1,
          "volumeUsd": "509897.415985",
          "buyVolumeUsd": "509897.415985",
          "sellVolumeUsd": "0",
          "wins": 0,
          "losses": 0,
          "realizedPnlUsd": "0",
          "cumulativeRealizedPnlUsd": "2369172.875606"
        },
        {
          "t": 1772841600,
          "trades": 1,
          "buys": 0,
          "sells": 1,
          "uniqueMarkets": 1,
          "volumeUsd": "0",
          "buyVolumeUsd": "0",
          "sellVolumeUsd": "0",
          "wins": 0,
          "losses": 1,
          "realizedPnlUsd": "-509897.415985",
          "cumulativeRealizedPnlUsd": "1859275.4596209999"
        }
        // ... 5 more bars
      ]
    }
  }
}

​
Usage Guidelines

Bar data provides time-series aggregates for individual trader activity. Each bar represents a time period and tracks trading behavior, volume, profit/loss, and market participation for a specific trader. Key characteristics:
  • Trader ID format: The traderId format is <address>:<protocol> (e.g., 0x742d35cc6634c0532925a3b844bc9e7595f0beb6:Polymarket)
  • Trading activity metrics: Count trades, buys, sells, and unique markets traded
  • Volume tracking: Monitor trading volume in both USD and collateral tokens (CT)
  • Performance analysis: Track realized PnL (profit and loss) and cumulative performance
  • Win/loss tracking: Count profitable vs unprofitable positions resolved during the period
  • Time-series format: Each bar has a timestamp (t) representing the period start
  • Coarser resolutions: Available in hourly, 4-hour, daily, and weekly intervals (no minute-level data)

​
Troubleshooting Tips

Trader bars are designed for analyzing trading patterns over longer periods. Minute-level granularity would produce sparse data for most traders and isn’t useful for typical trader analysis. Use hourly or daily resolutions for meaningful insights.
  • realizedPnlUsd: Profit/loss from positions that were opened AND closed during this specific bar period
  • cumulativeRealizedPnlUsd: Total all-time realized PnL as of the end of this bar
The cumulative value helps track overall trader performance, while the per-bar value shows period-specific gains/losses.
Wins and losses count the number of positions that were resolved (closed) during the bar period:
  • wins: Positions closed at a profit
  • losses: Positions closed at a loss
Note: These only count resolved positions, not unrealized gains on open positions.
While often similar (especially for USDC-based markets), these can differ due to:
  • Exchange rate fluctuations if the collateral token isn’t a stablecoin
  • Timing differences in data collection
  • Different calculation methodologies at the venue level
For most Polymarket data, expect these to be nearly identical since USDC is the collateral.
This counts the number of distinct prediction markets the trader participated in during the bar period. A high value indicates diversification, while a low value suggests focused trading on specific events.
Wins and losses only count when positions are fully closed and resolved. If a trader only opened new positions or partially closed existing ones during the bar period, trades will be non-zero but wins/losses will be zero.
Win rate = wins / (wins + losses). Only calculate this when (wins + losses) > 0 to avoid division by zero. Note that win rate doesn’t account for position sizing - a trader could have a high win rate but negative PnL if their losses are larger than their wins.