{
  "schemaVersion": "vultax-public-research-data-v1",
  "articleUrl": "https://vultax.com/research/is-polymarket-just-sports-betting",
  "datasets": [
    {
      "title": "Sports and esports share of dollars traded on Polymarket, by month",
      "columns": [
        {
          "name": "Category",
          "unit": null
        },
        {
          "name": "Sports and esports",
          "unit": "%"
        },
        {
          "name": "Politics and geopolitics",
          "unit": "%"
        }
      ],
      "rows": [
        [
          "Jan 2025",
          31.2,
          46.3
        ],
        [
          "Feb 2025",
          36.2,
          31.6
        ],
        [
          "Mar 2025",
          35,
          39.5
        ],
        [
          "Apr 2025",
          29.3,
          48.5
        ],
        [
          "May 2025",
          27.5,
          48.1
        ],
        [
          "Jun 2025",
          21.9,
          49.8
        ],
        [
          "Jul 2025",
          24.9,
          23
        ],
        [
          "Aug 2025",
          37.9,
          23.6
        ],
        [
          "Sep 2025",
          47.1,
          27.1
        ],
        [
          "Oct 2025",
          40.6,
          23.3
        ],
        [
          "Nov 2025",
          47.3,
          18.2
        ],
        [
          "Dec 2025",
          42.7,
          19.1
        ],
        [
          "Jan 2026",
          44.4,
          21.8
        ],
        [
          "Feb 2026",
          39.9,
          21.5
        ],
        [
          "Mar 2026",
          42.7,
          21.7
        ],
        [
          "Apr 2026",
          45.6,
          26.7
        ]
      ],
      "measurementContext": "Every fill in the archive, January 2025 to April 2026; politics and geopolitics shown for comparison.",
      "sources": [
        {
          "label": "Polymarket Gamma API — events by 24-hour volume",
          "url": "https://gamma-api.polymarket.com/events/keyset?order=volume24hr&ascending=false&limit=100",
          "note": "Read in full at 20:39 UTC on 27 September 2026, until the volume field reached zero; volume24hr counts contracts; read again at 22:59 UTC on 19 October 2026"
        },
        {
          "label": "Polymarket data API — trades",
          "url": "https://data-api.polymarket.com/trades",
          "note": "Dollars paid for the 256 sampled markets, and the check of the volume field against contracts traded"
        },
        {
          "label": "Boka Qin and Rui Yang — Polymarket-v1 Database (TimeSeventeen)",
          "url": "https://huggingface.co/datasets/TimeSeventeen/Polymarket-v1",
          "note": "Every fill from 1 January 2025 to 28 April 2026, published under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/); the monthly and weekday shares are Vultax calculations on it."
        },
        {
          "label": "Vultax: Is Polymarket legal in the US?",
          "url": "https://vultax.com/research/is-polymarket-legal-in-the-us-2026",
          "note": "Where sports event contracts may be offered, venue by venue"
        },
        {
          "label": "Vultax: Prediction market lawsuit tracker",
          "url": "https://vultax.com/research/prediction-market-lawsuit-tracker",
          "note": "The court cases over sports and event contracts, checked against the court record"
        },
        {
          "label": "Vultax: Polymarket sports and esports markets",
          "url": "https://vultax.com/research/polymarket-sports-and-esports-markets",
          "note": "Order-book depth and trading hours by sport"
        },
        {
          "label": "Selected arithmetic checked in Lean 4.35.0",
          "url": "https://vultax.com/datasets/research-proof-library-2026-10-25/articles/is-polymarket-just-sports-betting.md",
          "note": "Selected exact-rational calculations and displayed-value consistency checks, checked by Lean 4.35.0, Lean kernel replay and Nanoda. Not a proof of the underlying observations, statistical conclusions, legal claims or production code."
        },
        {
          "label": "Per-article scope records and Lean package",
          "url": "https://vultax.com/datasets/research-proof-library-2026-10-25/README.md",
          "note": "Dated per-article scope records, Lean source, frozen permitted public inputs, checker logs and a reproducible ZIP. Covers only the scope stated in each record, not the whole study."
        }
      ],
      "measurement": {
        "kind": "observed",
        "temporalCoverage": "2025-01/2026-04",
        "population": "714,691,643 Polymarket fills",
        "methodology": "Dollars traded per market and month from every fill. Categories come from the venue's tags for the markets carrying 92% of dollars and from the archive's labels for the rest; on markets with both, the two agree on sport-or-not for 99.6% of dollars."
      },
      "id": "monthly-share-chart",
      "kind": "published-chart",
      "description": "On Sunday 27 September 2026 sports and esports took 84.5% of the dollars traded on Polymarket and 83.8% of the contracts. Over sixteen months the dollar share ran from 31% to a low of 22% and up to 46%, and NFL Sundays sat about twenty points above weekdays.",
      "articleUrl": "https://vultax.com/research/is-polymarket-just-sports-betting",
      "sectionUrl": "https://vultax.com/research/is-polymarket-just-sports-betting#monthly-share",
      "publishedAt": "2026-10-06",
      "modifiedAt": "2026-10-25",
      "version": "64479c00da67d58cb2c53c59f8f94493f9699bf63bf314350c04f4f72c62dc42",
      "isLive": false,
      "limitations": "Published research snapshots and calculations; these exports do not contain current quotes or live account data. Observation windows and populations are stated in the source captions and methodology. Missing metadata is unknown, not zero. Figures describe Polymarket's international venue: one full count on 27 September 2026 and every fill from January 2025 to April 2026. They measure what was traded, not how any contract is classified in law. Nothing here is legal or financial advice.",
      "downloads": {
        "json": "https://vultax.com/research/is-polymarket-just-sports-betting/data.json?dataset=monthly-share-chart",
        "csv": "https://vultax.com/research/is-polymarket-just-sports-betting/data.csv?dataset=monthly-share-chart"
      }
    }
  ]
}