Options Position Size Calculator

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Options Position Size Calculator
Automate your options position sizing directly on the chart.
This indicator calculates the optimal number of options contracts to buy based on your risk management parameters, entry price, stop loss, and expected options decay.
📋 What It Does
Eliminates the need for external calculators by computing your position size directly on TradingView. Simply set your entry and stop loss prices, configure your risk parameters, and the indicator instantly shows you how many contracts to buy.
✨ Key Features

Visual Price Lines: Set entry and stop loss prices with draggable horizontal lines
Custom Loss Table: Input your own options loss percentages for distances from 0.1% to 1.5% (with interpolation between values)
Automatic Calculations: Calculates distance to stop loss, expected options loss, dollar risk, and final contract quantity
Live Display: All calculations shown in a clean info box on your chart
Accounts for Contract Multiplier: Correctly factors in the standard 100x options multiplier

🎯 How to Use
1. Configure Settings First

Add the indicator to your chart (set any initial prices when prompted)
Open indicator Settings (gear icon)
Enter your Portfolio Size (e.g., $10,000)
Set Risk Percentage (e.g., 2%)
Enter the Contract Price (the premium per contract, e.g., $1.50)

2. Fill Your Options Loss Table

This is crucial - you must input your own data
For each distance (0.1%, 0.2%, up to 1.5%), enter the expected % loss your options will suffer
Base this on your strategy (calls/puts), strike selection, and expiration
Use historical data from your trades or an options calculator
Example: If underlying moves 0.5% to your stop, your option might lose 30%

3. Set Entry & Stop Loss on Chart

Go back to indicator settings
Adjust Entry Price and Stop Loss Price to match your trade setup
The indicator calculates your position size instantly

4. Read Results
The indicator displays:

Distance to stop loss (%)
Expected options loss (%)
Dollar risk amount
CONTRACTS TO BUY - your position size

📊 Example
Portfolio: $10,000 | Risk: 2% | Entry: $150 | Stop: $149 (0.67% distance)
Expected loss: 38% | Contract price: $2.00
→ Buy 2 contracts

⚠️ Important
Your loss table values depend on your specific options strategy, strike, DTE, and IV
Different strategies require different loss tables
This is for educational purposes - always verify calculations
Never risk more than you can afford to lose

Made by traders, for traders. Trade safe, size smart.

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Информация о релизе

Here's a professional description for your TradingView publication:

📊 Position Size Calculator - Options & Crypto
A comprehensive position sizing tool that calculates the optimal number of contracts (Options) or position size with leverage (Crypto) based on your risk management parameters.

🎯 What It Does
This indicator helps you determine exactly how much to invest in a trade while maintaining strict risk management. Simply click on your entry and stop loss prices on the chart, and the calculator instantly shows you:
For Options Trading:

Number of contracts to buy
Expected loss percentage based on underlying movement
Total cost of position

For Crypto Trading:

Position size in base currency
Optimal leverage multiplier
Margin requirements


⚙️ How To Use
Step 1: Add Indicator to Chart

Add the indicator to your chart
Select your trading mode (Options or Crypto)

Step 2: Set Entry & Stop Loss (Interactive)

When prompted, click on the chart where you want your entry price
Click again where you want your stop loss
The indicator draws green (entry) and red (stop loss) lines automatically

Step 3: Configure Your Settings
Risk Management (Both Modes):

Portfolio Size: Your total trading capital
Risk Percentage: What % of capital you're willing to risk (typically 1-2%)

Options Mode Settings:

Contract Price: Current price per options contract
Loss Table: Define expected options loss % for each 0.1% move in the underlying (from 0.1% to 1.5%)

Example: If underlying moves 0.5% to your stop loss, how much % will your options lose? (typically 25-40%)



Crypto Mode Settings:

Trading Fee: Your exchange's trading fee percentage (e.g., 0.055% for most major exchanges)


📐 Calculation Methodology
Options Mode:
1. Calculates distance from entry to stop loss (%)
2. Interpolates expected options loss from your lookup table
3. Calculates: Contracts = Risk Amount / (Contract Price × Expected Loss %)
Crypto Mode:
1. Position Size = (Capital × Risk%) / (|Entry - Stop Loss| + TradingFee% × (Entry + Stop Loss))
2. Leverage = ceil((Entry Price × Position Size / Capital) × 1.05)

✨ Key Features

Interactive Price Selection: Click directly on chart to set entry/stop loss
Dual Mode: Seamlessly switch between Options and Crypto trading
Real-time Calculations: Updates instantly as you adjust parameters
Visual Display: Clear label shows all relevant information
Risk Management: Ensures you never risk more than your defined percentage
Precise Calculations: Uses exact decimal values (no rounding errors)

⚠️ Important Notes

This indicator is a position sizing tool only - it does not provide trade signals
Always verify calculations before placing trades
Past performance does not guarantee future results
Adjust the options loss table based on your specific options strategy and market conditions
For crypto, ensure your exchange supports your calculated leverage level