OPEN-SOURCE SCRIPT
Smart Position Sizer [QuantRegime]
## Overview
The Smart Position Sizer calculates the exact position size for any trade based on your account size, risk percentage, and stop loss distance. It answers the question every trader should ask before every trade: **"How many shares/contracts/coins should I buy?"**
Most traders either skip this calculation (and blow up) or do it manually (and make mistakes). This indicator does it instantly, on any market, on any timeframe.
## How It Works
**The core formula:**
$$\text{Position Size} = \frac{\text{Account} \times \text{Risk \%}}{\text{Stop Loss Distance}}$$
But unlike a simple calculator, this indicator:
1. **Automatically calculates stop loss distance** using 5 different methods
2. **Shows entry, SL, and 3 take-profit levels** directly on your chart
3. **Displays exact dollar risk, position value, and implied leverage**
4. **Adjusts in real-time** as price and volatility change
## 5 Stop Loss Methods
| Method | Best For | How It Works |
|--------|----------|-------------|
| **ATR** | Most traders | Places SL at N × ATR from entry. Adapts to current volatility. |
| **Fixed Points** | Scalpers | Fixed pip/point distance. Consistent mechanical stop. |
| **Fixed %** | Swing traders | SL at a fixed % below/above entry. Simple and predictable. |
| **Recent Swing** | Price action traders | Uses the most recent swing high/low as the stop level. |
| **Manual Price** | Specific levels | You type in the exact SL price (e.g., below a key support). |
## The Dashboard
The dashboard shows everything you need at a glance:
- **Direction** — Long or Short (auto-detected or manual)
- **Position Size** — How many units/shares/contracts to buy
- **Position Value** — Total dollar value of the position
- **Risk Amount** — Exact dollars at risk if stopped out
- **Stop Loss** — Price level and % distance
- **ATR** — Current average true range and % of price
- **TP1, TP2, TP3** — Take profit targets with R:R ratio and dollar profit
## Chart Lines
The indicator draws directly on your chart:
- **White solid line** — Entry price
- **Red dashed line** — Stop loss level
- **Cyan dotted lines** — 3 take profit levels with R:R labels
## Who This Is For
- **Crypto traders** — Know exactly how many coins to buy for your risk tolerance
- **Stock traders** — Calculate share count for any position
- **Forex traders** — Get lot sizes based on pip risk
- **Futures traders** — Contract sizing with proper risk management
## Settings Guide
### For Conservative Traders (1% risk)
- Risk Per Trade: 1%
- ATR Multiplier: 2.0-2.5
- TP1: 1.5R, TP2: 2.5R, TP3: 4R
### For Moderate Traders (2% risk)
- Risk Per Trade: 2%
- ATR Multiplier: 1.5-2.0
- TP1: 1R, TP2: 2R, TP3: 3R
### For Aggressive (scalping, 3%+)
- Risk Per Trade: 3%
- SL Method: Fixed Points (tight)
- TP1: 1R, TP2: 1.5R, TP3: 2R
## Important Notes
- **Update your account size** as it changes — this is not connected to your broker
- Position sizes are calculated based on the current bar's close price
- The "Auto" direction uses a 21 EMA — override manually if you have a specific bias
- Works on any market with proper syminfo (stocks, crypto, forex, futures, indices)
## Risk Management Rules
This indicator enforces proper risk management by design:
- Never risk more than your set % per trade
- ATR-based stops adapt to current market volatility
- The R:R display helps you only take trades with favorable risk/reward
> "The goal of a successful trader is to make the best trades. Money is secondary." — Alexander Elder
## Disclaimer
This indicator is for educational and analytical purposes only. It does not constitute financial advice. Position sizing calculations depend on accurate input of your account size and do not account for slippage, gaps, or execution differences. Always verify calculations before placing trades.
The Smart Position Sizer calculates the exact position size for any trade based on your account size, risk percentage, and stop loss distance. It answers the question every trader should ask before every trade: **"How many shares/contracts/coins should I buy?"**
Most traders either skip this calculation (and blow up) or do it manually (and make mistakes). This indicator does it instantly, on any market, on any timeframe.
## How It Works
**The core formula:**
$$\text{Position Size} = \frac{\text{Account} \times \text{Risk \%}}{\text{Stop Loss Distance}}$$
But unlike a simple calculator, this indicator:
1. **Automatically calculates stop loss distance** using 5 different methods
2. **Shows entry, SL, and 3 take-profit levels** directly on your chart
3. **Displays exact dollar risk, position value, and implied leverage**
4. **Adjusts in real-time** as price and volatility change
## 5 Stop Loss Methods
| Method | Best For | How It Works |
|--------|----------|-------------|
| **ATR** | Most traders | Places SL at N × ATR from entry. Adapts to current volatility. |
| **Fixed Points** | Scalpers | Fixed pip/point distance. Consistent mechanical stop. |
| **Fixed %** | Swing traders | SL at a fixed % below/above entry. Simple and predictable. |
| **Recent Swing** | Price action traders | Uses the most recent swing high/low as the stop level. |
| **Manual Price** | Specific levels | You type in the exact SL price (e.g., below a key support). |
## The Dashboard
The dashboard shows everything you need at a glance:
- **Direction** — Long or Short (auto-detected or manual)
- **Position Size** — How many units/shares/contracts to buy
- **Position Value** — Total dollar value of the position
- **Risk Amount** — Exact dollars at risk if stopped out
- **Stop Loss** — Price level and % distance
- **ATR** — Current average true range and % of price
- **TP1, TP2, TP3** — Take profit targets with R:R ratio and dollar profit
## Chart Lines
The indicator draws directly on your chart:
- **White solid line** — Entry price
- **Red dashed line** — Stop loss level
- **Cyan dotted lines** — 3 take profit levels with R:R labels
## Who This Is For
- **Crypto traders** — Know exactly how many coins to buy for your risk tolerance
- **Stock traders** — Calculate share count for any position
- **Forex traders** — Get lot sizes based on pip risk
- **Futures traders** — Contract sizing with proper risk management
## Settings Guide
### For Conservative Traders (1% risk)
- Risk Per Trade: 1%
- ATR Multiplier: 2.0-2.5
- TP1: 1.5R, TP2: 2.5R, TP3: 4R
### For Moderate Traders (2% risk)
- Risk Per Trade: 2%
- ATR Multiplier: 1.5-2.0
- TP1: 1R, TP2: 2R, TP3: 3R
### For Aggressive (scalping, 3%+)
- Risk Per Trade: 3%
- SL Method: Fixed Points (tight)
- TP1: 1R, TP2: 1.5R, TP3: 2R
## Important Notes
- **Update your account size** as it changes — this is not connected to your broker
- Position sizes are calculated based on the current bar's close price
- The "Auto" direction uses a 21 EMA — override manually if you have a specific bias
- Works on any market with proper syminfo (stocks, crypto, forex, futures, indices)
## Risk Management Rules
This indicator enforces proper risk management by design:
- Never risk more than your set % per trade
- ATR-based stops adapt to current market volatility
- The R:R display helps you only take trades with favorable risk/reward
> "The goal of a successful trader is to make the best trades. Money is secondary." — Alexander Elder
## Disclaimer
This indicator is for educational and analytical purposes only. It does not constitute financial advice. Position sizing calculations depend on accurate input of your account size and do not account for slippage, gaps, or execution differences. Always verify calculations before placing trades.
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Thông tin và các ấn phẩm này không nhằm mục đích, và không cấu thành, lời khuyên hoặc khuyến nghị về tài chính, đầu tư, giao dịch hay các loại khác do TradingView cung cấp hoặc xác nhận. Đọc thêm tại Điều khoản Sử dụng.
Mã nguồn mở
Theo đúng tinh thần TradingView, tác giả của tập lệnh này đã công bố nó dưới dạng mã nguồn mở, để các nhà giao dịch có thể xem xét và xác minh chức năng. Chúc mừng tác giả! Mặc dù bạn có thể sử dụng miễn phí, hãy nhớ rằng việc công bố lại mã phải tuân theo Nội quy.
Thông báo miễn trừ trách nhiệm
Thông tin và các ấn phẩm này không nhằm mục đích, và không cấu thành, lời khuyên hoặc khuyến nghị về tài chính, đầu tư, giao dịch hay các loại khác do TradingView cung cấp hoặc xác nhận. Đọc thêm tại Điều khoản Sử dụng.