{
"symbol": "SPY",
"snapshot_date": "string",
"current_atm_iv": 0,
"iv_rank": 0,
"iv_percentile": 0,
"window": 0,
"observations_found": 0,
"retention_window_days": 0,
"min_iv": 0,
"max_iv": 0,
"first_observation_date": "string",
"last_observation_date": "string",
"methodology": "string"
}