curl --request GET \
  --url https://external-api.kalshi.com/trade-api/v2/margin/markets/{ticker}

{
  "market": {
    "ticker": "<string>",
    "title": "<string>",
    "contract_size": "<string>",
    "tick_size": "0.5600",
    "fractional_trading_enabled": true,
    "leverage_estimate": 123,
    "leverage_estimates": {},
    "price": "0.5600",
    "volume": "10.00",
    "volume_notional_value_dollars": "0.5600",
    "open_interest": "10.00",
    "open_interest_notional_value_dollars": "0.5600",
    "volume_24h": "10.00",
    "volume_24h_notional_value_dollars": "0.5600",
    "bid": "0.5600",
    "ask": "0.5600",
    "settlement_mark_price": {
      "price": "0.5600",
      "ts_ms": 123
    },
    "liquidation_mark_price": {
      "price": "0.5600",
      "ts_ms": 123
    },
    "reference_price": {
      "price": "0.5600",
      "ts_ms": 123
    }
  }
}