Advance/Decline Volume Line

Install and import

bash

npm install fintech-algorithms

import { calculate } from "fintech-algorithms/market-breadth-and-internals/thrust-and-pressure/advance-decline-volume-line";

Signature

calculate(rows, seed)

Worked example

executed Captured by running this function on the input its own test provides. Real output of real code — but not asserted against a published figure.

Input

rows

[
  {
    "session_date": "2026-01-05",
    "advances": 520,
    "declines": 480,
    "unchanged": 20,
    "advancing_volume": 92000000,
    "declining_volume": 78000000,
    "ready": true
  },
  {
    "session_date": "2026-01-06",
    "advances": 480,
    "declines": 520,
    "unchanged": 20,
    "advancing_volume": 86000000,
    "declining_volume": 94000000,
    "ready": true
  },
  {
    "session_date": "2026-01-07",
    "advances": 540,
    "declines": 460,
    "unchanged": 20,
    "advancing_volume": 108000000,
    "declining_volume": 72000000,
    "ready": true
  }
]

Showing 3 of 24 elements.

seed

Call

calculate(rows, seed)

Returns

object with 3 fields: status, value, series

{
  "status": "resolved",
  "value": 96000000,
  "series": [
    {
      "date": "2026-01-05",
      "net": 14000000,
      "value": 14000000
    },
    {
      "date": "2026-01-06",
      "net": -8000000,
      "value": 6000000
    },
    {
      "date": "2026-01-07",
      "net": 36000000,
      "value": 42000000
    }
  ]
}

Diagrams

Advance/Decline Volume Line — decision boundary

Advance/Decline Volume Line — family map

How it works

This page states the contract — how to call it correctly. The article explains the concept: why it works, and where it breaks.

Read the article →

References

Claim-to-source map
Advance-Decline Volume Line — StockCharts ChartSchool
Advance-Decline Indicators — StockCharts ChartSchool
Volume Summary Client Specification v1.1d — New York Stock Exchange
Historical-example decision