{
 "page": "https://prediction-market-use-cases.vercel.app/kalshi/category/economics/",
 "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": 8752,
  "events": 1497,
  "nseries": 248,
  "vol": 515827345,
  "zero": 2618,
  "settled": 7450,
  "yes": 3669,
  "no": 3781,
  "first": "2021-06-30",
  "last": "2025-11-22",
  "by_year": [
   {
    "year": 2021,
    "markets": 127,
    "contracts": 1203136,
    "never_traded": 1,
    "settled": 127,
    "yes": 71
   },
   {
    "year": 2022,
    "markets": 2123,
    "contracts": 27788379,
    "never_traded": 445,
    "settled": 2123,
    "yes": 974
   },
   {
    "year": 2023,
    "markets": 1301,
    "contracts": 34180702,
    "never_traded": 393,
    "settled": 1275,
    "yes": 607
   },
   {
    "year": 2024,
    "markets": 2124,
    "contracts": 73778584,
    "never_traded": 307,
    "settled": 1954,
    "yes": 969
   },
   {
    "year": 2025,
    "markets": 3077,
    "contracts": 378876544,
    "never_traded": 1472,
    "settled": 1971,
    "yes": 1048
   }
  ],
  "top_series": [
   {
    "series": "KXFEDDECISION",
    "title": "Fed meeting",
    "markets": 130,
    "contracts": 278539309,
    "never_traded": 62
   },
   {
    "series": "FED",
    "title": "Fed funds rate",
    "markets": 347,
    "contracts": 40837397,
    "never_traded": 8
   },
   {
    "series": "KXAAAGASM",
    "title": "US gas price",
    "markets": 182,
    "contracts": 36583464,
    "never_traded": 82
   },
   {
    "series": "KXCPIYOY",
    "title": "Inflation",
    "markets": 124,
    "contracts": 22946853,
    "never_traded": 6
   },
   {
    "series": "KXRATECUTCOUNT",
    "title": "Number of rate cuts",
    "markets": 36,
    "contracts": 17930225,
    "never_traded": 13
   },
   {
    "series": "KXPAYROLLS",
    "title": "Jobs numbers",
    "markets": 255,
    "contracts": 11082522,
    "never_traded": 130
   },
   {
    "series": "KXCPI",
    "title": "CPI",
    "markets": 85,
    "contracts": 10180484,
    "never_traded": 1
   },
   {
    "series": "RATECUT",
    "title": "Fed rate cut",
    "markets": 11,
    "contracts": 9758096,
    "never_traded": 0
   },
   {
    "series": "FEDDECISION",
    "title": "Fed meeting",
    "markets": 70,
    "contracts": 8598823,
    "never_traded": 6
   },
   {
    "series": "KXGDP",
    "title": "US GDP growth",
    "markets": 62,
    "contracts": 8396269,
    "never_traded": 19
   }
  ]
 }
}