{
 "page": "https://prediction-market-use-cases.vercel.app/kalshi/series/kxatpmatch/",
 "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": {
  "category": "Sports",
  "title": "ATP Tennis Match",
  "frequency": "custom",
  "markets": 2520,
  "events": 1260,
  "vol": 450159413,
  "zero": 40,
  "settled": 2486,
  "yes": 1239,
  "no": 1247,
  "first": "2025-06-18",
  "last": "2025-11-15",
  "by_month": [
   [
    "2025-06",
    334,
    11882971,
    5,
    334,
    164
   ],
   [
    "2025-07",
    606,
    92189872,
    32,
    606,
    302
   ],
   [
    "2025-08",
    566,
    75420045,
    0,
    560,
    280
   ],
   [
    "2025-09",
    272,
    57429875,
    0,
    268,
    134
   ],
   [
    "2025-10",
    594,
    125204951,
    3,
    576,
    288
   ],
   [
    "2025-11",
    148,
    88031699,
    0,
    142,
    71
   ]
  ],
  "trades_by_month": [
   [
    "2025-06",
    54444,
    8333044
   ],
   [
    "2025-07",
    344021,
    94926718
   ],
   [
    "2025-08",
    353420,
    62186495
   ],
   [
    "2025-09",
    226776,
    69750461
   ],
   [
    "2025-10",
    788621,
    124443679
   ],
   [
    "2025-11",
    372998,
    90449718
   ]
  ],
  "top_events": [
   [
    "KXATPMATCH-25SEP05DJOALC",
    2,
    11436386
   ],
   [
    "KXATPMATCH-25JUL11SINDJO",
    2,
    9924079
   ],
   [
    "KXATPMATCH-25JUL11FRIALC",
    2,
    9141148
   ],
   [
    "KXATPMATCH-25SEP02AUGDE",
    2,
    8630887
   ],
   [
    "KXATPMATCH-25SEP05SINAUG",
    2,
    8198164
   ]
  ]
 }
}