Crypto Mark-Price Data: Event Time vs Retrieval Time
Mark price updates continuously; each reading has a time. Using a mark price from a different moment than the position check misstates liquidation risk.
Short answer
Binance's premiumIndex returns markPrice, indexPrice, lastFundingRate, nextFundingTime and a time field; the mark-price stream pushes updates with an event time. Mark price drives liquidation and unrealised P&L, so align it precisely with the moment you evaluate a position. Mark-price klines summarise mark price per interval with the same live-bar caveat as trade klines.
Which times the data carries
| Time | Present? | Meaning |
|---|---|---|
| time (premiumIndex) | Yes | Reading time |
| Stream event time | Yes | Update time |
| nextFundingTime | Yes | Upcoming settlement |
| Retrieval time | No | Record it |
Put Crypto Mark-Price Data next to price, flow and positioning in one workspace.
Open a ChartsPod workspaceWhat to record yourself
| Field to store | Why |
|---|---|
| time / event time | Event key |
| received_at | Delay |
| markPrice | Value |
| indexPrice | Same reading |
| source (REST/stream/kline) | Convention |
Example
Illustrative: a risk check used a mark price three seconds old during a fast move; the stream had already dropped 280. The liquidation buffer looked larger than it was.
Related: Crypto Mark-Price Data: Null vs Zero - Handle Missing Fields Correctly, Crypto Index-Price Data: Event Time vs Retrieval Time.
Mark-price klines summarise mark price per interval with the same live-bar caveat as trade klines.
Review Crypto Mark-Price Data with bar replay before using it live.
Open ChartsPod replayQuestions readers ask
Why does mark price timing matter?
It drives liquidation and P&L.
What time does premiumIndex give?
A time field per reading.
Stream or REST?
Stream for timeliness; record times either way.
Sources and methodology
Field definitions come from DEX Screener's API reference and CoinGecko's onchain API documentation, read 17 October 2026. Where a schema doesn't document a timestamp, this guide says so and recommends recording retrieval time yourself.
- Binance: USD-M Futures market data API — trades, depth, funding and open interest.
This article explains research tools and workflows. It is not financial advice, does not recommend buying or selling any asset and does not predict prices. Crypto derivatives carry a risk of rapid and total loss of margin.
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