{
 "page": "https://prediction-market-use-cases.vercel.app/kalshi/category/entertainment/",
 "source": "Becker Kalshi dataset (github.com/Jon-Becker/prediction-market-analysis); categories from Kalshi public API GET /trade-api/v2/series fetched 2026-10-17",
 "snapshot": "2026-10-17",
 "units": {
  "contracts": "sum of markets.volume (contracts, not dollars)"
 },
 "data": {
  "markets": 56190,
  "events": 5041,
  "nseries": 1426,
  "vol": 244708650,
  "zero": 36332,
  "settled": 51294,
  "yes": 5861,
  "no": 45433,
  "first": "2021-08-03",
  "last": "2025-11-23",
  "by_year": [
   {
    "year": 2021,
    "markets": 65,
    "contracts": 649949,
    "never_traded": 0,
    "settled": 65,
    "yes": 11
   },
   {
    "year": 2022,
    "markets": 104,
    "contracts": 734351,
    "never_traded": 4,
    "settled": 104,
    "yes": 23
   },
   {
    "year": 2023,
    "markets": 434,
    "contracts": 2887979,
    "never_traded": 64,
    "settled": 433,
    "yes": 62
   },
   {
    "year": 2024,
    "markets": 4544,
    "contracts": 78631292,
    "never_traded": 1085,
    "settled": 4408,
    "yes": 778
   },
   {
    "year": 2025,
    "markets": 51043,
    "contracts": 161805079,
    "never_traded": 35179,
    "settled": 46284,
    "yes": 4987
   }
  ],
  "top_series": [
   {
    "series": "KXSPOTIFYD",
    "title": "Daily US Spotify chart",
    "markets": 5498,
    "contracts": 19125002,
    "never_traded": 3628
   },
   {
    "series": "KXTOPARTIST",
    "title": "Top Artist on Spotify",
    "markets": 27,
    "contracts": 9333924,
    "never_traded": 10
   },
   {
    "series": "KXRANKLISTGOOGLESEARCH",
    "title": "#1 most searched on google",
    "markets": 37,
    "contracts": 6807358,
    "never_traded": 1
   },
   {
    "series": "KXOSCARPIC",
    "title": "Oscar for Best Picture",
    "markets": 33,
    "contracts": 6519179,
    "never_traded": 0
   },
   {
    "series": "KXSBADS",
    "title": "Super Bowl ads",
    "markets": 17,
    "contracts": 6118248,
    "never_traded": 0
   },
   {
    "series": "KXSONGSONCHARTTSWIFT",
    "title": "TAYLOR SWIFT HOLDS ALL TOP 12 SONGS ON BILLBOARD HOT 100 CHART",
    "markets": 2,
    "contracts": 6086781,
    "never_traded": 0
   },
   {
    "series": "KXSUPERBOWLHEADLINE",
    "title": "Who will headline super bowl ",
    "markets": 50,
    "contracts": 4813533,
    "never_traded": 0
   },
   {
    "series": "KXAPPRANKFREE",
    "title": "Free app ranking",
    "markets": 1541,
    "contracts": 3943570,
    "never_traded": 748
   },
   {
    "series": "KXTIME",
    "title": "TIME\u2019s Person of the Year",
    "markets": 37,
    "contracts": 3851737,
    "never_traded": 16
   },
   {
    "series": "KXTOP10BILLBOARDSPOTSTS",
    "title": "HOw many top 10 spots will taylor Swift have on the billboard chart for the week of ",
    "markets": 60,
    "contracts": 3634317,
    "never_traded": 0
   }
  ]
 }
}