Position Manager

Position Manager is a lightweight browser extension that adds a draggable risk-management panel to TradingView. It calculates a position size from your account equity, risk tolerance, entry price, stop-loss price, and leverage, then lets you apply the calculated quantity to TradingView's order ticket.

The extension is designed to make position sizing deliberate and consistent before a trade is placed.

Features

• Calculates position quantity from a fixed percentage of account equity
• Automatically determines long or short direction from the entry and stop-loss prices
• Shows stop-loss distance, nominal position size, required margin, and projected stop-loss amount
• Reads the current symbol, market price, account equity, limit or stop entry price, and stop-loss price from TradingView when available
• Applies the calculated quantity to TradingView's quantity field
• Records realized losses for the current day in browser local storage
• Enforces a configurable maximum daily drawdown
• Disables position application when:
  • the daily loss limit has been reached, or
  • the required margin exceeds account equity
• Provides a draggable, minimizable interface isolated from TradingView's styles

Position-sizing model

The extension uses the following calculations:

Risk amount       = Account equity × Risk percentage
Stop distance     = |Entry price − Stop-loss price| ÷ Entry price
Nominal size      = Risk amount ÷ Stop distance
Position quantity = Nominal size ÷ Entry price
Required margin   = Nominal size ÷ Leverage

For example, with $10,000 of equity, 1% risk, an entry at $100, and a stop loss at $98:

Risk amount       = $100
Stop distance     = 2%
Nominal size      = $5,000
Position quantity = 50 units

Leverage changes the required margin, but it does not change the amount at risk at the stop-loss price.

Installation

This repository currently contains an unpacked browser extension and is not distributed through a browser extension store.

Chrome, Brave, or another Chromium browser

1. Clone or download this repository.
2. Open chrome://extensions in your browser.
3. Enable Developer mode.
4. Select Load unpacked.
5. Choose the repository directory containing manifest.json.
6. Open or refresh TradingView.

Firefox

1. Clone or download this repository.
2. Open about:debugging#/runtime/this-firefox.
3. Select Load Temporary Add-on.
4. Choose manifest.json from the repository.
5. Open or refresh TradingView.

Firefox removes temporary extensions when the browser closes, so you must load it again in a new browser session.

Usage

1. Open a TradingView chart and its order ticket.
2. Confirm or enter your account equity and leverage.
3. Set your desired risk percentage and maximum daily drawdown.
4. Enter an entry price and stop-loss price. When supported by the current TradingView order ticket, the extension fills these values automatically.
5. Review the calculated position quantity, nominal size, required margin, and projected stop-loss amount.
6. Select Apply Position to copy the calculated quantity into TradingView's quantity field.

The extension does not submit an order. Review every value in TradingView before placing the trade.

Daily-loss tracking

Enter each realized loss in the Daily Loss section. Records include the current symbol and time and are stored locally in the browser. They reset automatically when the local calendar date changes.

When recorded daily losses reach the configured maximum drawdown, the extension sets the position quantity to zero and disables Apply Position.

You can remove an individual record or clear all records for the current day.

Privacy

Position Manager has no backend and sends no account or trading data to an external service. Daily-loss records are stored in the browser's local storage for TradingView.

The extension runs only on URLs matching:

https://*.tradingview.com/*

Current limitations

• TradingView can change its page structure without notice. Automatic field detection or quantity application may stop working when element IDs or selectors change.
• Quantity is currently rounded to two decimal places, which may not suit every instrument.
• Daily losses must be entered manually.
• The extension does not account for fees, slippage, funding, liquidation price, contract multipliers, or instrument-specific quantity rules.
• Account-equity detection depends on the relevant value being visible in TradingView.
• Firefox installation is temporary unless the extension is packaged and signed.

Project structure

.
├── manifest.json   # Manifest V3 extension configuration
├── content.js      # Panel UI, TradingView integration, and risk calculations
├── livermore.jpg   # Image displayed in the panel
└── LICENSE         # MIT License

Development

There is no build step or package dependency. Edit content.js, reload the unpacked extension from your browser's extension page, and refresh TradingView to test changes.

Disclaimer

This software is provided for informational and risk-management purposes only. It is not financial advice and does not guarantee that losses will remain within the selected risk amount. Market gaps, slippage, fees, leverage, liquidation, execution behavior, and incorrect or stale page data can produce different results. You are responsible for verifying all calculations and orders before trading.

License

Licensed under the MIT License.