{
    "symbol": "SPY",
    "contractsWithTrades": 5271,
    "totalTrades": 801450,
    "buyVolume": 3465538,
    "sellVolume": 3631048,
    "midVolume": 720339,
    "netVolume": -165510,
    "biggestSingleTrade": 19295,
    "lastTradeUtc": "2026-05-12T20:14:59.995Z"
}