Documentation

Glossary

12 terms of art, from the order-flow, volume and options screens and the data labels, written out in full and explained in one sentence. Where a measure has a limit — something it cannot tell you, or an assumption it rests on — that limit is part of the definition rather than a footnote somewhere else. Each indicator has its own page under /docs/indicators, and each screener filter is defined on /docs/screener.

There is one copy of each definition, in lib/glossary.ts, and this page renders it, so a definition cannot be edited here and left behind there.

Level 2 (order book)l2

Every resting buy and sell order at each price, not just the best bid and offer.

It shows where size is waiting. Resting orders can be pulled the instant price reaches them, so depth is intent, never a promise.

Cumulative Volume Deltacvd

A running total of volume that traded into the offer minus volume that traded into the bid.

It separates buying that lifted offers from selling that hit bids. Price and CVD moving apart describes which side was more aggressive; it does not say what price does next.

Anchored VWAPavwap

The volume-weighted average price measured from one chosen bar forward, rather than from the session open.

Anchoring to an event — a gap, an earnings print, a high — shows the average price everyone who traded since that event has paid.

Point of Controlpoc

The single price at which the most volume traded over the period.

It is where the most business got done over the period. It describes that period; it says nothing about where price goes next.

Value Area Highvah

The upper edge of the price band that contains about 70% of the period’s volume.

Above it, price is outside the range most of the period’s trade agreed on.

Value Area Lowval

The lower edge of the price band that contains about 70% of the period’s volume.

Below it, price is outside the range most of the period’s trade agreed on.

Open, High, Low, Close, Volumeohlcv

The five numbers that define one price bar: where it started, its extremes, where it ended, and how much traded.

Simulatedsim

This figure is computed from a placeholder, not from a live market feed.

It is badged rather than hidden so a demo can never be mistaken for a fill. Anything marked SIM must not be traded on.

Relative Volumerelvol

The volume of the last completed session, divided by the average volume of the ten completed sessions before it.

Above 1 means more shares traded than usual — it says nothing about direction. It compares whole sessions, so a session still trading is not counted until it closes.

Unusual Volumeunusual_volume

Names trading far more than their own recent average.

Unusual is relative to the name itself, so a quiet stock qualifies on much less volume than a busy one.

Open Interestoi

The number of contracts that exist and have not yet been closed out.

Volume counts what changed hands today; open interest counts what is still on the books. Rising price with rising OI means new positions, not just churn.

Gamma Exposuregex

An estimate of how much dealers must buy or sell to stay hedged as price moves.

It is an ESTIMATE built on an assumption about who is on which side of each contract — it is a map of likely dealer behaviour, not an observed flow.

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