Aperiodic
Metrics
MarketsLive
DocsPricing
Get the data

Metrics library

Grid24h
Data Catalog

MASK on

DELAYED 15 MIN…Updates by itself every minute

MASK perp · Binance USDT
5-minute bars · the last 24 hours
Compare MASK with other perps in Markets →

—

Loading the last day

Order flow

About order flow

Volume delta

Taker buys minus taker sells, in dollars: which side crossed the spread harder in each bar.

volume_delta_notional

—

Loading the last day

Flow toxicity

One-sided taker flow times volatility, each scored against the day so far: the bars where takers pushed hard into a moving market.

flow_toxicity_score

—

Loading the last day

Flow entropy

How evenly taker notional split between buying and selling. Low entropy means one side had the market to itself.

flow_entropy

—

Loading the last day

Kyle’s lambda

How far the price moved per unit of signed taker flow inside the bar. Spikes are bars where a little flow moved the price a lot.

kyle_like_lambda

—

Loading the last day

Taker slippage

What the average taker trade paid against the prevailing quote, in basis points.

slippage_bps_mean

—

Loading the last day

Large trades

The share of notional that traded in trades of $1,000 and up.

large_order_percentage

—

Loading the last day

Run imbalance

The longest unbroken run of buys against the longest run of sells: which side kept hitting, and for how long.

run_imbalance

—

Loading the last day

Uptick volume

Volume printed on upticks over volume on downticks: whether trades were lifting the price or leaning on it.

uptick_downtick_volume_ratio

—

Loading the last day

Realized volatility

Volatility from every trade-to-trade return inside the bar, for the 5 minutes and not annualised.

realized_vol

—

Loading the last day

Jump ratio

The share of realized variance that bipower variation doesn’t explain: how much of the move came in jumps rather than drift.

jump_ratio

—

Loading the last day

High-low range

How far the price travelled from its high to its low inside the bar, in basis points.

range_bps

—

Loading the last day

L1 & L2 order book

About the order book

Spread

The bid-ask spread at the bar’s close, in basis points of the mid.

spread_bps

—

Loading the last day

Top-of-book depth

Dollars resting at the best bid and the best ask together, at the bar’s close.

total_dollar_depth

—

Loading the last day

Depth, 10 levels

Size resting in the top 10 levels of both sides, averaged over the bar and priced in dollars.

bid_agg_10_avg + ask_agg_10_avg

—

Loading the last day

Book imbalance

Bids against asks across the top 10 levels, from −1 to 1: above zero, the book leaned to the bid.

imbalance_ratio_10

—

Loading the last day

Derivatives

About derivatives

Funding rate

The rate the venue showed at the bar’s close, per funding period. Positive means longs pay shorts.

funding_rate

—

Loading the last day

Basis

The mark price against the index, in basis points of the index.

basis_bps

—

Loading the last day

Open interest

Contracts open, as the change since the first bar of the window.

open_interest_contracts

—

Loading the last day

Volume

Dollars traded in each bar.

volume_notional

—

Loading the last day

New to these metrics? Learn them from first principles, in our interactive course. Want a chart that isn't here? Tell us.

Aperiodic

Built from hundreds of terabytes of raw data and distilled into point-in-time metrics you can pull as parquet files. Plus the raw trades, quotes and derivatives data behind them.

Use Cases
  • Improve your backtest
  • Find new alpha
  • Execute smarter
Indices
  • All indices
  • Aperiodic Cost Index
  • Aperiodic Depth Index
  • Aperiodic Impact Index
Metrics
  • Metrics library
  • Data Catalog
  • Free data
  • Live markets dashboard
  • Every perp, A–Z
  • Global Liquidity
  • Unusual activity
  • Order Flow
  • L1 & L2
  • Derivatives
  • RWA
  • Live funding rates
  • Raw Data
Developers
  • Docs
  • API Docs
  • MCP Server
  • Notebooks
  • Integrations
  • For AI Agents
  • Atlas Security Master
  • TParquet
  • Binance OI history API
  • OKX history APIs
  • Pre-flight
  • Changelog
  • Roadmap
  • llms.txt
Learn
  • Markets from First Principles
  • Replays
  • Microstructure Guide
  • Architecture
  • Research Blog
  • FAQ
Compare
  • All vendors
  • Pricing compared
  • vs. Tardis
  • vs. CoinGlass
  • vs. Kaiko
  • vs. Amberdata
  • vs. Crypto Lake
  • vs. Laevitas
  • vs. Coinalyze
  • vs. Binance public data
  • vs. Hyperliquid data
  • Binance archive
  • Hyperliquid data
Company
  • Team
  • Pricing
  • Contact
  • Book a call
  • Terms of Service
  • Privacy Policy
  • Licensing
  • SLA

© Copyright 2026 Aperiodic. All Rights Reserved.

Aperiodic Limited · Registered in Ireland · Company No. 815273 ·
136 Capel Street, Dublin D01 T2C9, Ireland