{
  "source": "Prediction Frontier",
  "page": "https://predictionfrontier.com/markets",
  "generated_at": "2026-09-16T17:13:15.098Z",
  "licence": "Free to reuse with attribution to Prediction Frontier and a link to https://predictionfrontier.com/markets.",
  "unit_note": "Volume in contracts is never converted to dollars. A window whose usd_complete is false excludes at least one venue from the dollar total.",
  "sources": [
    {
      "venue": "Manifold",
      "slug": "manifold",
      "kind": "native",
      "delayed": false,
      "last_success_at": "2026-09-16T17:10:02.053+00:00"
    },
    {
      "venue": "Polymarket",
      "slug": "polymarket",
      "kind": "native",
      "delayed": false,
      "last_success_at": "2026-09-16T17:10:02.053+00:00"
    },
    {
      "venue": "Kalshi",
      "slug": "kalshi",
      "kind": "native",
      "delayed": false,
      "last_success_at": "2026-09-16T17:10:02.053+00:00"
    }
  ],
  "windows": {
    "24h": {
      "captured_at": "2026-09-16T17:10:01.913+00:00",
      "total": {
        "notional_volume_usd": null,
        "unique_users": null,
        "transactions": null,
        "open_interest_usd": 0,
        "active_markets": 1000,
        "usd_complete": false
      },
      "venues": [
        {
          "venue": "Kalshi",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": 0,
          "active_markets": 914,
          "usd_complete": false,
          "delayed": false
        },
        {
          "venue": "Polymarket",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": null,
          "active_markets": 85,
          "usd_complete": false,
          "delayed": false
        },
        {
          "venue": "Manifold",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": null,
          "active_markets": 1,
          "usd_complete": false,
          "delayed": false
        }
      ]
    },
    "7d": {
      "captured_at": "2026-09-16T17:10:01.913+00:00",
      "total": {
        "notional_volume_usd": null,
        "unique_users": null,
        "transactions": null,
        "open_interest_usd": 0,
        "active_markets": 1000,
        "usd_complete": false
      },
      "venues": [
        {
          "venue": "Kalshi",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": 0,
          "active_markets": 914,
          "usd_complete": false,
          "delayed": false
        },
        {
          "venue": "Polymarket",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": null,
          "active_markets": 85,
          "usd_complete": false,
          "delayed": false
        },
        {
          "venue": "Manifold",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": null,
          "active_markets": 1,
          "usd_complete": false,
          "delayed": false
        }
      ]
    },
    "30d": {
      "captured_at": "2026-09-16T17:10:01.913+00:00",
      "total": {
        "notional_volume_usd": null,
        "unique_users": null,
        "transactions": null,
        "open_interest_usd": 0,
        "active_markets": 1000,
        "usd_complete": false
      },
      "venues": [
        {
          "venue": "Kalshi",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": 0,
          "active_markets": 914,
          "usd_complete": false,
          "delayed": false
        },
        {
          "venue": "Polymarket",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": null,
          "active_markets": 85,
          "usd_complete": false,
          "delayed": false
        },
        {
          "venue": "Manifold",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": null,
          "active_markets": 1,
          "usd_complete": false,
          "delayed": false
        }
      ]
    },
    "all": {
      "captured_at": "2026-09-16T17:10:01.913+00:00",
      "total": {
        "notional_volume_usd": null,
        "unique_users": null,
        "transactions": null,
        "open_interest_usd": 0,
        "active_markets": 1000,
        "usd_complete": false
      },
      "venues": [
        {
          "venue": "Kalshi",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": 0,
          "active_markets": 914,
          "usd_complete": false,
          "delayed": false
        },
        {
          "venue": "Polymarket",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": null,
          "active_markets": 85,
          "usd_complete": false,
          "delayed": false
        },
        {
          "venue": "Manifold",
          "notional_volume_usd": null,
          "unique_users": null,
          "transactions": null,
          "open_interest_usd": null,
          "active_markets": 1,
          "usd_complete": false,
          "delayed": false
        }
      ]
    }
  }
}