Fx_Shepherd Lot Size Calculator [ALLDYN]

2024年9月25日

This "Fx_Shepherd Lot Size Calculator" script is a basic yet essential tool designed for traders to calculate the appropriate lot size based on account balance, risk percentage, and stop-loss pips. It promotes disciplined risk management by ensuring that the user only risks a defined percentage of their account on each trade. The script also features a toggleable table that displays the account size, risk percentage, and calculated lot size, offering clear, real-time visualization for the user. This helps traders maintain consistency and avoid over-leveraging.

This "Fx_Shepherd Lot Size Calculator" script stands out as a unique utility for traders in several ways:

### 1. **Real-Time Lot Size Calculation**:
- The script provides an automatic, real-time calculation of the optimal lot size based on the account balance, risk percentage, and stop loss (SL) in pips. This offers traders immediate guidance on how much risk they are exposing their account to in each trade, streamlining risk management decisions.

### 2. **Dynamic Table Display**:
- The toggle-able table feature allows users to show or hide the lot size table on the chart. This makes the script non-intrusive for traders who may not want constant table overlays, providing more flexibility for chart space management.

### 3. **Customizable Inputs**:
- Inputs such as **balance**, **risk percentage**, and **stop loss** are easily configurable, allowing users to adjust the calculations to suit different trading strategies, account sizes, and risk tolerances.
- The `truncate()` function ensures the lot size is presented in a simple, rounded format, which is crucial for precise order placement and reduces the chance of errors.

### 4. **Responsive and Clean UI**:
- The table is color-coded for easy reading, with a sleek design that places key information — account size, risk percentage, and calculated lot size — in a clear, organized structure. The black background with white text for the data points improves readability, while the border and table cell colors (green and black) provide a professional look.

### 5. **Risk Management Focus**:
- The primary purpose of this script is to ensure that traders maintain consistent risk management by aligning their lot size with their defined risk per trade and stop loss distance. This automated approach to risk ensures that traders stay disciplined with risk exposure.

### 6. **Efficiency for All Trading Styles**:
- Whether a trader is scalping, day trading, or swing trading, this calculator adjusts dynamically, allowing it to be used across various timeframes and asset classes. It helps traders avoid manual calculations for each trade, thus improving efficiency and reducing human error.

### 7. **Non-Intrusive Clean-Up**:
- The feature to **clear** the table when not needed ensures the chart remains clean and decluttered when the table is hidden. This improves the user experience, especially for traders who switch between different strategies or charts.

Overall, this script combines simplicity and efficiency while being flexible enough to fit the needs of a broad spectrum of traders. Its focus on user customization, clean interface, and emphasis on risk management makes it a valuable tool for both novice and experienced traders.

9月8日

版本注释

- ****Updated to Pinescript version 6 - [ALLDYN]****

### 📢 Update: Universal Position Size Calculator \[ALLDYN]

This release upgrades the original **Fx\_Shepherd Lot Size Calculator** into a **multi-asset position sizing tool**. It now works across **Forex, Futures, Stocks, and Crypto**, with flexible inputs and a cleaner display.

#### ✨ New Features

* **Multi-asset support**

* Forex → pip-based lot sizing
* Futures → tick-based contract sizing (with manual or auto tick value)
* Stocks & Crypto → dollar-per-share (or coin) stops
* Generic point-based sizing option

* **Dual Risk Options**

* % of account balance
* Fixed dollar risk override

* **Customizable Settings**

* Pip value per standard lot, lot step, and min lot for Forex
* Tick value input with auto-estimate fallback for Futures
* Independent stop inputs (pips, ticks, points, dollars)

* **Unified Output Table**

* Displays symbol, balance, risk, stop, risk per unit, position size, risk used, and helpful notes
* Cleaner layout (no colspan issues) with colored header and labels

#### 🔧 Enhancements

* Consistent **Pine Script v6** syntax (no NA defaults, no colspan, no runtime defvals)
* Safer rounding: lots are rounded **down to nearest step** to prevent over-risking
* Header row styling to mimic merged cells without breaking compile
* Works on any instrument TradingView supports (`syminfo.type` auto-detect)

#### 🧭 Use Case

Quickly calculate **lot size / contracts / shares** directly on-chart, sized to your risk plan. Ideal for traders moving across different asset classes.