{ "schemaVersion": "vultax-public-research-data-v1", "articleUrl": "https://vultax.com/research/is-polymarket-just-sports-betting", "datasets": [ { "title": "One Sunday, every event counted", "columns": [ { "name": "Category", "unit": null }, { "name": "Events", "unit": null }, { "name": "Share of contracts", "unit": null } ], "rows": [ [ "Sports", "2,746", "70.6%" ], [ "Esports", "259", "13.2%" ], [ "Crypto", "2,039", "10.4%" ], [ "Politics", "1,416", "3.2%" ], [ "Weather and climate", "365", "1.2%" ], [ "Economy and finance", "295", "0.4%" ], [ "Culture", "183", "0.4%" ], [ "Geopolitics", "136", "0.3%" ], [ "Science and technology", "214", "0.2%" ], [ "Other", "30", "0.03%" ] ], "measurementContext": "Polymarket's international venue, every event with volume in the 24 hours to 20:39 UTC on Sunday 27 September 2026, counted once under the venue's own category tags. Polymarket US is a separate exchange and is not counted.", "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" }, { "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" } ], "measurement": { "kind": "observed", "temporalCoverage": "2026-09-26T20:39Z/2026-09-27T20:39Z", "population": "7,683 Polymarket events with 24-hour volume", "methodology": "The venue's public event feed read in full, ordered by 24-hour volume until the field reached zero; each event counted once under the venue's tags. The volume field counts contracts." }, "id": "whole-venue-table", "kind": "published-table", "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#whole-venue", "publishedAt": "2026-10-06", "modifiedAt": "2026-10-06", "version": "457bbb8c35bd4f1ded6455e75146a244cbe58d4cc92f5678ea362170d3a367d8", "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=whole-venue-table", "csv": "https://vultax.com/research/is-polymarket-just-sports-betting/data.csv?dataset=whole-venue-table" } }, { "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" }, { "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" } ], "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": "2026-10-06", "version": "ad222d9e2ba0e5c11e01d060e67b7ef4513445eaf10f0c075bbd93106d8c28db", "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" } }, { "title": "Sports and esports share of dollars traded, by day of the week", "columns": [ { "name": "Category", "unit": null }, { "name": "Sports and esports share", "unit": "%" } ], "rows": [ [ "Mon", 36.2 ], [ "Tue", 34.5 ], [ "Wed", 37.4 ], [ "Thu", 40.3 ], [ "Fri", 40.5 ], [ "Sat", 56.6 ], [ "Sun", 57.1 ] ], "measurementContext": "2025 NFL season, 4 September 2025 to 8 February 2026. Days run from 05:00 UTC, midnight in New York in winter, so a Sunday holds the whole NFL Sunday.", "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" }, { "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" } ], "measurement": { "kind": "observed", "temporalCoverage": "2025-09-04/2026-02-08", "population": "Every Polymarket fill in the 2025 NFL season", "methodology": "Share of each day's dollars traded in sports and esports markets, pooled by day of the week; days cut at 05:00 UTC." }, "id": "sundays-and-weekdays-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#sundays-and-weekdays", "publishedAt": "2026-10-06", "modifiedAt": "2026-10-06", "version": "5dd41acd380c06aed805ae2715f262ef654d781a60397d9a4459b06e209b4d6e", "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=sundays-and-weekdays-chart", "csv": "https://vultax.com/research/is-polymarket-just-sports-betting/data.csv?dataset=sundays-and-weekdays-chart" } } ] }