FIXED_INTERVAL instruments (e.g. crypto perpetuals) fund at the end of each fixed period, shifted by the instrument's market offset. Only next_funding_time is given; sessions is null.SESSION_BASED instruments (equity futures) fund only during NASDAQ cash-session hours. sessions lists the upcoming sessions with their concrete funding periods, which vary with early closes and holidays.id property from the Instruments endpoint.curl --location 'https://api.onetrading.com/fast/v1/funding-rate/schedule?instrument_code=BTC_USD_P&days=2' \
--header 'Authorization: Bearer <token>'{
"instrument_code": "NVDA_USD_P",
"funding_schedule": {
"type": "SESSION_BASED",
"calendar": "NASDAQ",
"max_periods_per_day": 2,
"split": "SESSION_MIDPOINT"
},
"next_funding_time": "2026-09-28T16:45:00.000Z",
"sessions": [
{
"date": "2026-09-28",
"periods": [
{
"period_number": 1,
"start": "2026-09-28T13:30:00.000Z",
"end": "2026-09-28T16:45:00.000Z",
"duration_minutes": 195
},
{
"period_number": 2,
"start": "2026-09-28T16:45:00.000Z",
"end": "2026-09-28T20:00:00.000Z",
"duration_minutes": 195
}
]
}
]
}