Stock Option Profit Calculator

Stock Option Profit Calculator: Calculate Your Potential Gains :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ddd; –card-background: #fff; –error-color: #dc3545; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 0; } .container { max-width: 1000px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); } header { text-align: center; margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid var(–border-color); } header h1 { color: var(–primary-color); margin-bottom: 10px; } .summary { font-size: 1.1em; color: #555; margin-bottom: 30px; } .calculator-section { margin-bottom: 40px; padding: 25px; border: 1px solid var(–border-color); border-radius: 8px; background-color: var(–card-background); box-shadow: 0 1px 5px rgba(0, 0, 0, 0.05); 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Stock Option Profit Calculator

Estimate your potential profit or loss from exercising stock options. Input key details to see your projected financial outcome.

Stock Option Profit Calculator

The price at which you can buy the stock.
The current market price of the stock.
How many option contracts you hold (1 contract = 100 shares).
The cost to purchase one option contract.
Total commission for buying and selling (if applicable).

Calculation Results

Potential Profit/Loss:
Total Cost of Options:
Total Potential Value (Exercised):
Breakeven Stock Price:
Formula Used:

Profit/Loss = (Current Stock Price – Strike Price – Premium Paid Per Share) * Number of Shares – Commission Cost

Total Cost = (Premium Paid Per Option * Number of Options * 100) + Commission Cost

Potential Value = (Current Stock Price – Strike Price) * Number of Shares

Breakeven Price = Strike Price + Premium Paid Per Share

Profitability Scenarios

Profit/Loss at Different Stock Prices
Stock Price Profit/Loss Breakeven Status

What is Stock Option Profit?

Stock option profit refers to the financial gain realized from the exercise and subsequent sale of stock options. Stock options grant the holder the right, but not the obligation, to buy or sell an underlying stock at a predetermined price (the strike price) within a specified period. Understanding how to calculate potential stock option profit is crucial for investors and traders to manage risk and maximize returns. This stock option profit calculator is designed to simplify this complex calculation.

Who should use it:

  • Individual investors who have been granted stock options by their employer (e.g., Employee Stock Options – ESO).
  • Traders who buy and sell call or put options on the open market.
  • Financial advisors and analysts evaluating potential option strategies.

Common misconceptions:

  • Profit is guaranteed if the stock price rises: This is only true if the stock price rises above the strike price PLUS the premium paid and any associated costs.
  • Options are too complex for beginners: While they have nuances, basic profit calculation is straightforward with the right tools like this stock option profit calculator.
  • All options are the same: Different types (call vs. put) and expiration dates significantly impact value and profit potential.

Stock Option Profit Formula and Mathematical Explanation

Calculating the profit or loss from a stock option involves several key variables. The core idea is to compare the potential selling price of the stock (derived from the strike price and current market price) against the total cost incurred to acquire and exercise the option.

Core Profit Calculation

For a call option (the right to buy), the profit is generally calculated as:

Profit/Loss = (Current Stock Price – Strike Price – Premium Paid Per Share) * Number of Shares – Commission Cost

Let's break down the components:

  • Current Stock Price: The market value of one share of the underlying stock at the time of calculation or sale.
  • Strike Price: The fixed price at which the option holder can buy (for a call) or sell (for a put) the stock.
  • Premium Paid Per Share: The cost of the option contract, divided by the number of shares it represents (usually 100). This is the price you paid for the right itself.
  • Number of Shares: Typically 100 shares per option contract.
  • Commission Cost: Any fees charged by your broker for executing the option trade (buying and selling).

Total Cost Calculation

The total cost is essential for determining if the profit is substantial enough to cover expenses:

Total Cost = (Premium Paid Per Option * Number of Options * 100) + Commission Cost

Potential Value (Intrinsic Value)

This represents the immediate value if the option were exercised right now:

Potential Value = (Current Stock Price – Strike Price) * Number of Shares

Note: This value is only positive for "in-the-money" options.

Breakeven Stock Price

This is the stock price at which you would neither make nor lose money on the option contract itself (before considering commissions):

Breakeven Stock Price = Strike Price + Premium Paid Per Share

Variables Table

Key Variables in Stock Option Profit Calculation
Variable Meaning Unit Typical Range
Strike Price The price at which the option can be exercised. Currency (e.g., USD) $0.01 – $1000+
Current Stock Price The real-time market price of the underlying stock. Currency (e.g., USD) $0.01 – $1000+
Number of Options The quantity of option contracts held. Count 1 – 1000+
Premium Paid Per Option The cost for one option contract. Currency (e.g., USD) $0.01 – $100+
Premium Paid Per Share Premium Paid Per Option / 100 (shares per contract). Currency (e.g., USD) $0.0001 – $10+
Number of Shares Shares controlled by one option contract. Count 100 (standard)
Commission Cost Broker fees for trades. Currency (e.g., USD) $0.00 – $50+

Practical Examples (Real-World Use Cases)

Example 1: Profitable Call Option Trade

Sarah bought 5 call option contracts for XYZ Corp stock. Each contract gives her the right to buy 100 shares at a strike price of $50. She paid a premium of $3 per share ($300 per contract). The total commission for buying was $20.

Inputs:

  • Strike Price: $50.00
  • Current Stock Price: $65.00
  • Number of Options: 5
  • Premium Paid Per Option: $3.00
  • Commission Cost: $20.00

Calculation using the stock option profit calculator:

  • Number of Shares = 5 contracts * 100 shares/contract = 500 shares
  • Premium Paid Per Share = $3.00
  • Total Cost = ($3.00 * 5 * 100) + $20.00 = $1500 + $20 = $1520
  • Potential Value = ($65.00 – $50.00) * 500 = $15.00 * 500 = $7500
  • Breakeven Stock Price = $50.00 + $3.00 = $53.00
  • Profit/Loss = ($65.00 – $50.00 – $3.00) * 500 – $20.00 = ($12.00 * 500) – $20.00 = $6000 – $20.00 = $5980.00

Interpretation: Sarah has a potential profit of $5980.00. The stock price ($65) is well above her breakeven point ($53), indicating a profitable trade. She would need to sell the shares for more than $53 each to cover her costs.

Example 2: Loss-Making Call Option Trade

John bought 2 call option contracts for ABC Inc. stock with a strike price of $100. He paid a premium of $5 per share ($500 per contract). The total commission was $10. Unfortunately, the stock price only rose to $102.

Inputs:

  • Strike Price: $100.00
  • Current Stock Price: $102.00
  • Number of Options: 2
  • Premium Paid Per Option: $5.00
  • Commission Cost: $10.00

Calculation using the stock option profit calculator:

  • Number of Shares = 2 contracts * 100 shares/contract = 200 shares
  • Premium Paid Per Share = $5.00
  • Total Cost = ($5.00 * 2 * 100) + $10.00 = $1000 + $10 = $1010
  • Potential Value = ($102.00 – $100.00) * 200 = $2.00 * 200 = $400
  • Breakeven Stock Price = $100.00 + $5.00 = $105.00
  • Profit/Loss = ($102.00 – $100.00 – $5.00) * 200 – $10.00 = (-$3.00 * 200) – $10.00 = -$600 – $10.00 = -$610.00

Interpretation: John has a potential loss of $610.00. The stock price ($102) is below his breakeven point ($105). Even though the stock price increased, it wasn't enough to cover the premium paid and commissions, resulting in a net loss if he exercises and sells.

How to Use This Stock Option Profit Calculator

Our stock option profit calculator is designed for ease of use. Follow these simple steps to get your results:

  1. Enter Strike Price: Input the price at which you have the right to buy the stock.
  2. Enter Current Stock Price: Input the current market price of the stock.
  3. Enter Number of Options: Specify how many option contracts you hold. Remember, one contract typically represents 100 shares.
  4. Enter Premium Paid Per Option: Input the total cost you paid for one option contract.
  5. Enter Commission Cost: Add any total commission fees associated with your option trades (buying and selling).
  6. Click 'Calculate Profit': The calculator will instantly display your potential profit or loss, total costs, potential value, and breakeven stock price.

How to read results:

  • Potential Profit/Loss: A positive number indicates a potential profit; a negative number indicates a potential loss.
  • Total Cost of Options: The total amount spent to acquire the options, including premiums and commissions.
  • Total Potential Value (Exercised): The market value of the shares if you exercise the option, minus the cost to exercise them (strike price).
  • Breakeven Stock Price: The stock price needed to cover the premium paid per share. Any price above this (for calls) is profit territory.

Decision-making guidance: Compare the potential profit/loss against your investment goals and risk tolerance. If the potential profit is significant and the stock price is comfortably above your breakeven point, exercising might be a good decision. Conversely, if the potential loss is substantial or the stock price is below breakeven, you might consider letting the option expire worthless to limit further losses.

Key Factors That Affect Stock Option Profit Results

Several factors significantly influence the profitability of stock options. Understanding these can help you make more informed decisions:

  1. Strike Price vs. Current Stock Price: This is the most direct determinant. For call options, a higher current stock price relative to the strike price increases potential profit. For put options, the opposite is true.
  2. Time to Expiration: Options have a limited lifespan. As expiration approaches, the "time value" of the option erodes. If the stock price hasn't moved favorably, the option can become worthless purely due to time decay. This is often referred to as Theta.
  3. Volatility (Implied Volatility – IV): Higher implied volatility in the market generally leads to higher option premiums. While this increases the initial cost, it also suggests a greater expected price movement, which could lead to larger profits if the movement is in your favor.
  4. Premium Paid: The initial cost of the option is a direct deduction from potential profits. A lower premium paid means a lower breakeven point and higher potential profit margin.
  5. Commissions and Fees: Brokerage fees for buying and selling options can eat into profits, especially for smaller trades or strategies involving multiple legs. Always factor these in.
  6. Market Sentiment and News: Broader market trends, company-specific news, economic data, and geopolitical events can all impact stock prices and, consequently, option values.
  7. Dividends: For call options, expected dividends can sometimes reduce the stock price on the ex-dividend date, potentially impacting the option's value. For put options, dividends can increase their value.

Frequently Asked Questions (FAQ)

Q1: What is the difference between exercising an option and selling it?

Exercising an option means you fulfill the contract's terms (buy or sell the stock at the strike price). Selling an option means you sell the contract itself to another trader before it expires. Profitability calculations differ slightly.

Q2: Can I lose more than I paid for the option?

If you *buy* an option (call or put), the maximum you can lose is the premium you paid plus commissions. If you *sell* (write) an option, your potential loss can be unlimited (especially for uncovered calls).

Q3: What does it mean for an option to be "in the money," "at the money," or "out of the money"?

"In the money" (ITM) means the option has intrinsic value (e.g., for a call, stock price > strike price). "At the money" (ATM) means the stock price is very close to the strike price. "Out of the money" (OTM) means the option has no intrinsic value (e.g., for a call, stock price < strike price).

Q4: How does time decay (Theta) affect my profit?

Time decay erodes the value of an option as it gets closer to expiration. For option buyers, it's a cost; for option sellers, it's a benefit. The stock option profit calculator primarily focuses on intrinsic value at a point in time, but time decay is crucial for strategy.

Q5: What happens if I don't exercise my option before it expires?

If you don't exercise an "in the money" option, it typically expires worthless, and you lose the premium paid. If it's "out of the money," it expires worthless automatically. Your broker may automatically exercise ITM options if the profit is substantial enough to cover costs, but this varies by broker.

Q6: Are there taxes on stock option profits?

Yes, profits from stock options are generally subject to capital gains taxes. The tax treatment depends on whether the options are classified as short-term or long-term, which is determined by how long you held the option or the underlying stock after exercise.

Q7: How many shares does one option contract represent?

Typically, one option contract represents 100 shares of the underlying stock. This is a standard convention in most equity options markets.

Q8: Can this calculator be used for put options?

This specific calculator is primarily designed for call options (profit from price increase). For put options (profit from price decrease), the logic needs adjustment: Profit = (Strike Price – Current Stock Price – Premium Paid Per Share) * Number of Shares – Commission Cost. The breakeven would be Strike Price – Premium Paid Per Share.

Related Tools and Internal Resources

var chartInstance = null; // Global variable to hold chart instance function validateInput(id, min, max, errorMessageId, helperText) { var input = document.getElementById(id); var errorElement = document.getElementById(errorMessageId); var value = parseFloat(input.value); errorElement.classList.remove('visible'); input.style.borderColor = '#ddd'; if (isNaN(value)) { errorElement.textContent = 'Please enter a valid number.'; errorElement.classList.add('visible'); input.style.borderColor = 'var(–error-color)'; return false; } if (min !== null && value max) { errorElement.textContent = 'Value is too high.'; errorElement.classList.add('visible'); input.style.borderColor = 'var(–error-color)'; return false; } return true; } function calculateProfit() { var strikePrice = parseFloat(document.getElementById('strikePrice').value); var currentPrice = parseFloat(document.getElementById('currentPrice').value); var numOptions = parseInt(document.getElementById('numberOfOptions').value); var premiumPerOption = parseFloat(document.getElementById('premiumPaid').value); var commission = parseFloat(document.getElementById('commissionCost').value); var valid = true; valid = validateInput('strikePrice', 0, null, 'strikePriceError') && valid; valid = validateInput('currentPrice', 0, null, 'currentPriceError') && valid; valid = validateInput('numberOfOptions', 0, null, 'numberOfOptionsError') && valid; valid = validateInput('premiumPaid', 0, null, 'premiumPaidError') && valid; valid = validateInput('commissionCost', 0, null, 'commissionCostError') && valid; if (!valid) { document.getElementById('profitLoss').textContent = '–'; document.getElementById('totalCost').textContent = '–'; document.getElementById('potentialValue').textContent = '–'; document.getElementById('breakevenPrice').textContent = '–'; updateChart([]); updateTable([]); return; } var sharesPerContract = 100; var totalShares = numOptions * sharesPerContract; var premiumPerShare = premiumPerOption / sharesPerContract; // Correct calculation for premium per share var totalPremiumCost = premiumPerOption * numOptions; // Total cost of premiums for all contracts var totalCost = totalPremiumCost + commission; var potentialValue = (currentPrice – strikePrice) * totalShares; var breakevenPrice = strikePrice + premiumPerOption; // Breakeven is strike + total premium per share // Profit/Loss calculation: (Market Value – Exercise Cost) – Total Cost // Market Value = Current Price * Total Shares // Exercise Cost = Strike Price * Total Shares // Profit/Loss = (Current Price * Total Shares – Strike Price * Total Shares) – Total Cost // Profit/Loss = (Current Price – Strike Price) * Total Shares – Total Cost // This is equivalent to: Potential Value – Total Cost // However, the formula in the explanation is: (Current Stock Price – Strike Price – Premium Paid Per Share) * Number of Shares – Commission Cost // Let's use the more direct profit calculation: // Profit = (Sale Price – Purchase Price) – Costs // Sale Price = Current Price * Total Shares // Purchase Price = Strike Price * Total Shares // Costs = Total Premium Cost + Commission // Profit = (Current Price * Total Shares – Strike Price * Total Shares) – (Total Premium Cost + Commission) // Profit = (Current Price – Strike Price) * Total Shares – Total Premium Cost – Commission // Profit = Potential Value – Total Premium Cost – Commission // Profit = Potential Value – Total Cost var profitLoss = potentialValue – totalCost; document.getElementById('profitLoss').textContent = formatCurrency(profitLoss); document.getElementById('totalCost').textContent = formatCurrency(totalCost); document.getElementById('potentialValue').textContent = formatCurrency(potentialValue); document.getElementById('breakevenPrice').textContent = formatCurrency(breakevenPrice); updateChartData(strikePrice, currentPrice, numOptions, premiumPerOption, commission); updateScenarioTable(strikePrice, currentPrice, numOptions, premiumPerOption, commission); } function formatCurrency(amount) { if (isNaN(amount)) return '–'; return '$' + amount.toFixed(2); } function resetCalculator() { document.getElementById('strikePrice').value = '10.00'; document.getElementById('currentPrice').value = '15.00'; document.getElementById('numberOfOptions').value = '100'; document.getElementById('premiumPaid').value = '1.00'; document.getElementById('commissionCost').value = '0.00'; // Clear errors var errorElements = document.querySelectorAll('.error-message'); for (var i = 0; i < errorElements.length; i++) { errorElements[i].classList.remove('visible'); errorElements[i].textContent = ''; } var inputs = document.querySelectorAll('.loan-calc-container input'); for (var i = 0; i < inputs.length; i++) { inputs[i].style.borderColor = '#ddd'; } calculateProfit(); // Recalculate with default values } function copyResults() { var profitLoss = document.getElementById('profitLoss').textContent; var totalCost = document.getElementById('totalCost').textContent; var potentialValue = document.getElementById('potentialValue').textContent; var breakevenPrice = document.getElementById('breakevenPrice').textContent; var assumptions = "Assumptions:\n"; assumptions += "Strike Price: $" + document.getElementById('strikePrice').value + "\n"; assumptions += "Current Stock Price: $" + document.getElementById('currentPrice').value + "\n"; assumptions += "Number of Options: " + document.getElementById('numberOfOptions').value + "\n"; assumptions += "Premium Paid Per Option: $" + document.getElementById('premiumPaid').value + "\n"; assumptions += "Commission Cost: $" + document.getElementById('commissionCost').value + "\n"; var textToCopy = "Stock Option Profit Calculation Results:\n\n"; textToCopy += "Potential Profit/Loss: " + profitLoss + "\n"; textToCopy += "Total Cost of Options: " + totalCost + "\n"; textToCopy += "Total Potential Value (Exercised): " + potentialValue + "\n"; textToCopy += "Breakeven Stock Price: " + breakevenPrice + "\n\n"; textToCopy += assumptions; navigator.clipboard.writeText(textToCopy).then(function() { // Optional: Show a confirmation message var copyButton = document.querySelector('.btn-copy'); var originalText = copyButton.textContent; copyButton.textContent = 'Copied!'; setTimeout(function() { copyButton.textContent = originalText; }, 1500); }).catch(function(err) { console.error('Failed to copy text: ', err); // Optional: Show an error message }); } // Charting Logic function updateChartData(strikePrice, currentPrice, numOptions, premiumPerOption, commission) { var canvas = document.getElementById('profitChart'); if (!canvas) return; var ctx = canvas.getContext('2d'); var sharesPerContract = 100; var totalShares = numOptions * sharesPerContract; var totalPremiumCost = premiumPerOption * numOptions; var totalCost = totalPremiumCost + commission; var stockPrices = []; var profits = []; var breakevenPrice = strikePrice + (premiumPerOption / sharesPerContract); // Correct breakeven per share // Generate stock prices around current price and breakeven var minPrice = Math.min(currentPrice, breakevenPrice) – 10; var maxPrice = Math.max(currentPrice, breakevenPrice) + 10; if (minPrice < 0) minPrice = 0; for (var i = 0; i < 10; i++) { var price = minPrice + (maxPrice – minPrice) * (i / 9); stockPrices.push(price); // Profit/Loss = (Current Stock Price – Strike Price) * Total Shares – Total Cost var profit = (price – strikePrice) * totalShares – totalCost; profits.push(profit); } // Ensure breakeven price is included if not already if (stockPrices.indexOf(breakevenPrice) === -1) { stockPrices.push(breakevenPrice); profits.push(0); // Profit is 0 at breakeven } stockPrices.sort(function(a, b){return a-b}); // Re-calculate profits based on sorted prices profits = stockPrices.map(function(price) { return (price – strikePrice) * totalShares – totalCost; }); if (chartInstance) { chartInstance.destroy(); } chartInstance = new Chart(ctx, { type: 'line', data: { labels: stockPrices.map(function(p) { return '$' + p.toFixed(2); }), datasets: [{ label: 'Profit/Loss ($)', data: profits, borderColor: 'var(–success-color)', backgroundColor: 'rgba(40, 167, 69, 0.2)', fill: true, tension: 0.1 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { x: { title: { display: true, text: 'Stock Price ($)' } }, y: { title: { display: true, text: 'Profit / Loss ($)' }, beginAtZero: false // Adjust based on data range } }, plugins: { tooltip: { callbacks: { label: function(context) { var label = context.dataset.label || ''; if (label) { label += ': '; } if (context.parsed.y !== null) { label += formatCurrency(context.parsed.y); } return label; } } } } } }); } // Table Logic function updateScenarioTable(strikePrice, currentPrice, numOptions, premiumPerOption, commission) { var tableBody = document.getElementById('scenarioTableBody'); tableBody.innerHTML = ''; // Clear previous rows var sharesPerContract = 100; var totalShares = numOptions * sharesPerContract; var totalPremiumCost = premiumPerOption * numOptions; var totalCost = totalPremiumCost + commission; var breakevenPrice = strikePrice + (premiumPerOption / sharesPerContract); var pricesToTest = [ breakevenPrice * 0.5, // Significantly below breakeven breakevenPrice * 0.8, // Below breakeven breakevenPrice, // At breakeven breakevenPrice * 1.2, // Above breakeven breakevenPrice * 1.5, // Significantly above breakeven currentPrice // Current price ]; // Ensure unique prices and sort them pricesToTest = Array.from(new Set(pricesToTest)).sort(function(a, b) { return a – b; }); pricesToTest.forEach(function(price) { if (price 0) { status = 'Profitable'; } else if (profit < 0) { status = 'Loss'; } else { status = 'Breakeven'; } var row = tableBody.insertRow(); var cellPrice = row.insertCell(); var cellProfit = row.insertCell(); var cellStatus = row.insertCell(); cellPrice.textContent = formatCurrency(price); cellProfit.textContent = formatCurrency(profit); cellStatus.innerHTML = status; }); } // Initial calculation and chart rendering on load document.addEventListener('DOMContentLoaded', function() { calculateProfit(); updateChartData( parseFloat(document.getElementById('strikePrice').value), parseFloat(document.getElementById('currentPrice').value), parseInt(document.getElementById('numberOfOptions').value), parseFloat(document.getElementById('premiumPaid').value), parseFloat(document.getElementById('commissionCost').value) ); updateScenarioTable( parseFloat(document.getElementById('strikePrice').value), parseFloat(document.getElementById('currentPrice').value), parseInt(document.getElementById('numberOfOptions').value), parseFloat(document.getElementById('premiumPaid').value), parseFloat(document.getElementById('commissionCost').value) ); }); // Add Chart.js library dynamically if not present if (typeof Chart === 'undefined') { var script = document.createElement('script'); script.src = 'https://cdn.jsdelivr.net/npm/chart.js@3.7.0/dist/chart.min.js'; // Use a specific version script.onload = function() { console.log('Chart.js loaded.'); // Recalculate and update chart after library is loaded calculateProfit(); updateChartData( parseFloat(document.getElementById('strikePrice').value), parseFloat(document.getElementById('currentPrice').value), parseInt(document.getElementById('numberOfOptions').value), parseFloat(document.getElementById('premiumPaid').value), parseFloat(document.getElementById('commissionCost').value) ); updateScenarioTable( parseFloat(document.getElementById('strikePrice').value), parseFloat(document.getElementById('currentPrice').value), parseInt(document.getElementById('numberOfOptions').value), parseFloat(document.getElementById('premiumPaid').value), parseFloat(document.getElementById('commissionCost').value) ); }; script.onerror = function() { console.error('Failed to load Chart.js.'); // Optionally display a message to the user }; document.head.appendChild(script); } else { // Chart.js is already loaded, ensure initial render calculateProfit(); updateChartData( parseFloat(document.getElementById('strikePrice').value), parseFloat(document.getElementById('currentPrice').value), parseInt(document.getElementById('numberOfOptions').value), parseFloat(document.getElementById('premiumPaid').value), parseFloat(document.getElementById('commissionCost').value) ); updateScenarioTable( parseFloat(document.getElementById('strikePrice').value), parseFloat(document.getElementById('currentPrice').value), parseInt(document.getElementById('numberOfOptions').value), parseFloat(document.getElementById('premiumPaid').value), parseFloat(document.getElementById('commissionCost').value) ); }

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