Research Readings Price and volatility
Spot/perpetual close basis
Contract-unit-normalized perpetual close divided by spot close, minus one, for the exact same fully closed Binance one-minute trade bars.
Full definition and limits
Signed fraction. Only perpetuals with a qualified Binance spot pair carry it (410 accepted, not the whole recorded universe; 1000-unit contracts are scaled), each inside its own dated intervals (feature_scopes in the research contract). Missing or zero-trade bars are absent. Descriptive closes cannot establish executable spread, sub-minute lead/lag, flow causation or arbitrage profit.
- Live monitoring
- Unsupported: historical only
- Observed
- from matching closed one-minute perpetual and spot bars
- Unit
- Signed fraction (0.01 is 1%)
- Valid range
- -1 or more
Example scope: BTCUSDT, ETHUSDT, SOLUSDT; 2025-07-15T00:01:00Z to 2026-09-11T00:00:00Z; perpetual close at or above spot. Only the 410 perpetuals with a Binance spot pair carry it, each on its dates. Review this scope before running.
Review scoped exampleTechnical details
Field ID
feature.spot_perp_close_basis
Valid query operators
at least, at most, between
Window operators: lowest, highest, average, latest or change in, over a trailing window.
Editable query preset
Example: A recorded value of 0 signed_fraction can be used in the editable condition below.
Starting point only. Review and edit before running.
{
"schema_version": "research_query.v2",
"normalization_version": "archive_normalization.v1",
"feature_version": "feature_defs.v1",
"target": "record_occurrences",
"where": {
"all": [
[
"feature.spot_perp_close_basis",
"gte",
0
],
[
"identity.symbol",
"in",
[
"btcusdt",
"ethusdt",
"solusdt"
]
],
[
"times.anchor_time",
"between",
[
"2025-07-15T00:01:00Z",
"2026-09-11T00:00:00Z"
]
]
]
},
"sort": [
"times.anchor_time",
"desc"
],
"page": {
"limit": 5,
"cursor": null
}
}The search reports how often the record held this condition and what followed. It does not decide whether an idea works.