Calculate Expected Return of Equally Weighted Portfolio

Calculate Expected Return of Equally Weighted Portfolio :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ccc; –card-background: #ffffff; –error-color: #dc3545; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: var(–text-color); background-color: var(–background-color); margin: 0; padding: 0; } .container { max-width: 960px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); } h1, h2, h3 { color: var(–primary-color); } h1 { text-align: center; margin-bottom: 20px; } .calculator-wrapper { margin-bottom: 40px; padding: 30px; 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); } .calculator-wrapper h2 { text-align: center; margin-bottom: 25px; color: var(–primary-color); } .input-group { margin-bottom: 20px; text-align: left; } .input-group label { display: block; margin-bottom: 8px; font-weight: bold; color: var(–primary-color); } .input-group input[type="number"], .input-group select { width: calc(100% – 20px); padding: 10px; margin-bottom: 5px; border: 1px solid var(–border-color); border-radius: 4px; font-size: 1rem; } .input-group .helper-text { font-size: 0.85rem; color: #6c757d; display: block; margin-top: -3px; margin-bottom: 10px; } .input-group .error-message { color: var(–error-color); font-size: 0.85rem; margin-top: 5px; display: none; /* Hidden by default */ } .input-group .error-message.visible { display: block; } .button-group { display: flex; justify-content: space-between; margin-top: 25px; } .button-group button, .button-group input[type="button"] { padding: 10px 20px; border: none; border-radius: 5px; cursor: pointer; font-size: 1rem; transition: background-color 0.3s ease; } .button-group button:hover, .button-group input[type="button"]:hover { opacity: 0.9; } .btn-primary { background-color: var(–primary-color); color: white; } .btn-reset { background-color: #6c757d; color: white; } .btn-copy { background-color: var(–primary-color); color: white; margin-left: 10px; } #results-container { margin-top: 30px; 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); text-align: center; } #results-container h3 { margin-bottom: 15px; color: var(–primary-color); } #main-result { font-size: 2.5rem; font-weight: bold; color: var(–success-color); margin-bottom: 15px; padding: 15px; border-radius: 5px; background-color: #e9ecef; display: inline-block; } .result-item { margin-bottom: 10px; font-size: 1.1rem; } .result-item strong { color: var(–primary-color); } .formula-explanation { margin-top: 20px; font-size: 0.9rem; color: #555; text-align: center; padding: 10px; background-color: #f0f0f0; border-radius: 4px; } #chart-container { margin-top: 30px; 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); text-align: center; } #chart-container canvas { max-width: 100%; height: auto; } .chart-caption { font-size: 0.9rem; color: #555; margin-top: 10px; } #portfolioTableContainer { margin-top: 30px; 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); } #portfolioTableContainer h3 { text-align: center; margin-bottom: 15px; } table { width: 100%; border-collapse: collapse; margin-top: 15px; } th, td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #ddd; } th { background-color: var(–primary-color); color: white; font-weight: bold; } td { background-color: var(–card-background); } tr:hover { background-color: #f2f2f2; } .article-section { margin-bottom: 40px; padding: 30px; 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); } .article-section h2 { margin-bottom: 20px; color: var(–primary-color); border-bottom: 2px solid var(–primary-color); padding-bottom: 5px; } .article-section h3 { margin-top: 25px; margin-bottom: 15px; color: var(–primary-color); } .article-section p, .article-section ul, .article-section ol { margin-bottom: 15px; } .article-section ul { padding-left: 20px; } .article-section li { margin-bottom: 8px; } .faq-item { margin-bottom: 15px; } .faq-item strong { color: var(–primary-color); cursor: pointer; display: block; margin-bottom: 5px; } .faq-item p { margin-left: 15px; font-size: 0.95rem; color: #555; } .related-links ul { list-style: none; padding: 0; } .related-links li { margin-bottom: 10px; } .related-links a { color: var(–primary-color); text-decoration: none; font-weight: bold; } .related-links a:hover { text-decoration: underline; } .related-links span { font-size: 0.9rem; color: #555; display: block; margin-top: 3px; } .highlighted-result { background-color: var(–success-color); color: white; padding: 10px 15px; border-radius: 4px; font-weight: bold; font-size: 1.2rem; margin-top: 10px; display: inline-block; } .copy-button-container { margin-top: 20px; text-align: center; } .copy-button-container button { padding: 10px 25px; background-color: var(–primary-color); color: white; border: none; border-radius: 5px; cursor: pointer; font-size: 1rem; transition: background-color 0.3s ease; } .copy-button-container button:hover { background-color: #003366; } .hidden { display: none; }

Calculate Expected Return of Equally Weighted Portfolio

Equally Weighted Portfolio Expected Return Calculator

Enter the total number of distinct assets in your portfolio. (Minimum 2)

Your Portfolio's Expected Return

Average Expected Return of Individual Assets:
Total Expected Portfolio Return:
Number of Assets Included:
The expected return of an equally weighted portfolio is the average of the expected returns of all individual assets within the portfolio.

Portfolio Asset Expected Returns Distribution

Visual representation of individual asset expected returns and the portfolio's average.

Individual Asset Expected Returns

Asset Name Expected Return (%)

What is Expected Return of an Equally Weighted Portfolio?

The Expected Return of an Equally Weighted Portfolio is a crucial metric for investors aiming to understand the potential profitability of their diversified investments. In an equally weighted portfolio, each asset is allocated the same percentage of the total investment capital. This means if you have five assets, each constitutes 20% of your portfolio. The expected return of such a portfolio is simply the arithmetic average of the expected returns of all the individual assets it holds. This calculation provides a straightforward way to estimate the overall performance you might anticipate from your investment mix, assuming historical or forecasted returns hold true.

This concept is particularly useful for investors who prefer a simple diversification strategy without complex asset allocation models. It helps to smooth out the impact of any single asset's performance.

Who should use it:

  • Individual investors managing their own portfolios.
  • Financial advisors evaluating client portfolios.
  • Students learning about investment principles.
  • Anyone seeking a quick estimate of portfolio performance based on individual asset expectations.

Common misconceptions:

  • Misconception: Equal weighting always leads to optimal diversification. Reality: While it diversifies risk, it doesn't account for asset correlations or volatility, which are key to true diversification.
  • Misconception: The expected return is guaranteed. Reality: Expected return is a probabilistic forecast, not a certainty. Actual returns can vary significantly.
  • Misconception: The calculator accounts for risk. Reality: This calculator focuses purely on expected returns, not the associated risks (volatility, standard deviation, etc.).

Understanding the Expected Return of an Equally Weighted Portfolio is a fundamental step in investment analysis. It forms the basis for more sophisticated portfolio performance calculations and strategic decisions. This metric is vital for setting realistic financial goals and managing investment expectations effectively.

Expected Return of an Equally Weighted Portfolio Formula and Mathematical Explanation

The formula for the Expected Return of an Equally Weighted Portfolio is elegantly simple, reflecting its name. It's derived by summing the expected returns of each asset and dividing by the number of assets, assuming each asset has an equal weight.

Let:

  • $E(R_p)$ be the Expected Return of the Portfolio
  • $n$ be the number of assets in the portfolio
  • $E(R_i)$ be the Expected Return of the $i$-th asset (where $i$ ranges from 1 to $n$)
  • $w_i$ be the weight of the $i$-th asset in the portfolio

For an equally weighted portfolio, the weight of each asset is the same: $w_i = \frac{1}{n}$ for all $i$.

The general formula for the expected return of a portfolio is: $E(R_p) = \sum_{i=1}^{n} w_i E(R_i)$

Substituting the weights for an equally weighted portfolio ($w_i = \frac{1}{n}$): $E(R_p) = \sum_{i=1}^{n} \left(\frac{1}{n}\right) E(R_i)$

This can be rewritten as: $E(R_p) = \frac{1}{n} \sum_{i=1}^{n} E(R_i)$

In plain English, this means the Expected Return of an Equally Weighted Portfolio is the arithmetic average of the expected returns of all the individual assets.

Variables Table

Variable Meaning Unit Typical Range
$E(R_p)$ Expected Return of the Portfolio Percentage (%) (-100% to +∞%)
$n$ Number of Assets Count (2 to ∞)
$E(R_i)$ Expected Return of the $i$-th Asset Percentage (%) (-100% to +∞%)
$w_i$ Weight of the $i$-th Asset Decimal or Percentage (%) (0% to 100%)

This formula highlights the core principle: diversification through equal weighting aims to balance the potential upside and downside across multiple assets to achieve a blended expected outcome. It's a foundational concept in understanding portfolio performance and is a key calculation when analyzing investment strategies that prioritize simplicity and broad market exposure. Understanding the Expected Return of an Equally Weighted Portfolio empowers investors to make more informed decisions.

Practical Examples (Real-World Use Cases)

Let's explore practical scenarios to illustrate how the Expected Return of an Equally Weighted Portfolio is calculated and interpreted. These examples demonstrate its application in everyday investment decision-making.

Example 1: Technology Sector Portfolio

An investor is building a small, equally weighted portfolio focused on technology stocks. They identify five key companies and estimate their expected annual returns based on market analysis and company prospects:

  • Asset A (Software Co.): 15%
  • Asset B (Hardware Inc.): 12%
  • Asset C (Cloud Services Ltd.): 18%
  • Asset D (Semiconductor Corp.): 10%
  • Asset E (AI Solutions): 20%

In this scenario, the number of assets ($n$) is 5. Since it's an equally weighted portfolio, each asset has a weight ($w_i$) of $1/5 = 20\%$.

Calculation: The Expected Return of an Equally Weighted Portfolio is the average of these returns: $E(R_p) = (15\% + 12\% + 18\% + 10\% + 20\%) / 5$ $E(R_p) = 75\% / 5$ $E(R_p) = 15\%$

Interpretation: The expected annual return for this equally weighted technology portfolio is 15%. This provides the investor with a baseline projection of performance. If the actual returns deviate significantly from this, it might prompt a review of the underlying assumptions or the portfolio's composition. This metric is a cornerstone for any investor interested in the Expected Return of an Equally Weighted Portfolio.

Example 2: Diversified ETF Portfolio

A beginner investor wants to create an equally weighted portfolio using Exchange Traded Funds (ETFs) that cover different asset classes. They choose four ETFs:

  • ETF 1 (S&P 500 Index): 11%
  • ETF 2 (Global Bonds): 4%
  • ETF 3 (Real Estate): 7%
  • ETF 4 (Emerging Markets): 14%

Here, the number of assets ($n$) is 4, and each ETF has a weight ($w_i$) of $1/4 = 25\%$.

Calculation: The Expected Return of an Equally Weighted Portfolio is calculated as the average: $E(R_p) = (11\% + 4\% + 7\% + 14\%) / 4$ $E(R_p) = 36\% / 4$ $E(R_p) = 9\%$

Interpretation: This diversified ETF portfolio has an expected annual return of 9%. While lower than the tech-focused portfolio in Example 1, it offers broader diversification across different market segments, potentially leading to lower overall risk. The investor can use this figure to compare against other potential portfolio structures or benchmarks. This demonstrates how the Expected Return of an Equally Weighted Portfolio metric aids in comparative analysis.

How to Use This Expected Return of an Equally Weighted Portfolio Calculator

Our Expected Return of an Equally Weighted Portfolio calculator is designed for simplicity and clarity, allowing you to quickly estimate your portfolio's potential performance. Follow these steps to get started:

  1. Input the Number of Assets: In the "Number of Assets" field, enter the total count of individual securities or funds that make up your portfolio. For an equally weighted portfolio, this number must be at least two.
  2. Enter Individual Asset Expected Returns: For each asset in your portfolio, you will see a field to input its estimated expected return. Enter the anticipated percentage return for each asset (e.g., enter '10' for 10%). These can be based on historical data, financial analyst projections, or your own investment research.
  3. Calculate: Click the "Calculate Return" button. The calculator will automatically process the inputs.
  4. Review the Results: The calculator will display:
    • Main Highlighted Result: The overall Expected Return of the Equally Weighted Portfolio (Total Expected Portfolio Return).
    • Average Expected Return of Individual Assets: The simple average of all entered individual asset returns.
    • Number of Assets Included: Confirms the count of assets used in the calculation.
    You will also see a table listing each asset's name and its input expected return, and a dynamic chart visualizing the distribution of these returns.
  5. Interpret the Outcome: The primary result, "Total Expected Portfolio Return," gives you a projected annual performance figure for your equally weighted portfolio. Use this as a benchmark for evaluating your investment strategy and making informed decisions. Remember, this is an expectation, not a guarantee.
  6. Copy Results: Click the "Copy Results" button to save the calculated figures, including the main result, intermediate values, and key assumptions (number of assets, individual returns), for your records or to share with others.
  7. Reset: If you need to start over or adjust inputs, click the "Reset" button. It will restore the calculator to its default settings.

By using this tool, you gain valuable insights into the potential performance drivers of your equally weighted investment strategy. Analyzing the Expected Return of an Equally Weighted Portfolio is a key step in responsible investing.

Key Factors That Affect Expected Return of an Equally Weighted Portfolio Results

While the calculation of the Expected Return of an Equally Weighted Portfolio is straightforward (an average), the inputs themselves are influenced by a multitude of dynamic financial factors. Understanding these drivers is crucial for setting realistic expectations and making informed investment decisions.

  • Individual Asset Expected Returns: This is the most direct input. The expected return of each asset is influenced by its specific industry, competitive landscape, management quality, innovation pipeline, and sector-specific economic outlook. For example, a high-growth tech stock might have a higher expected return than a stable utility stock.
  • Market Conditions and Economic Cycles: Broader economic factors like GDP growth, inflation rates, interest rate policies set by central banks, and geopolitical stability significantly impact the expected returns of all assets. During economic expansions, asset returns tend to be higher; during recessions, they often fall.
  • Risk Appetite and Market Sentiment: Investor sentiment plays a huge role. When investors are optimistic (risk-on), they may demand lower premiums for riskier assets, potentially increasing their expected returns. Conversely, during periods of fear (risk-off), investors flock to safer assets, demanding higher premiums (lower expected returns) for riskier ones.
  • Inflation: Expected inflation erodes the purchasing power of future returns. Investors typically demand a higher nominal expected return to compensate for expected inflation, ensuring their real returns (after accounting for inflation) meet their targets. If inflation expectations rise, so too should the expected returns demanded from investments.
  • Interest Rates: Central bank interest rate policies affect borrowing costs, discount rates used in valuation models, and the attractiveness of fixed-income investments. Higher interest rates generally lead to lower expected returns for equities and other growth assets, as the opportunity cost of holding them increases.
  • Asset Correlations (Indirect Impact): While not directly used in the *calculation* of an equally weighted portfolio's expected return, asset correlations are critical for understanding the *risk* associated with that return. A portfolio with high correlation between assets might have a similar average expected return to one with low correlation, but the latter will likely have lower overall risk for the same return. This influences the *choice* of assets going into the portfolio.
  • Fees and Transaction Costs: While not part of the theoretical formula, in practice, management fees, trading commissions, and other expenses reduce the net return an investor actually receives. These costs must be factored into the *realizable* expected return.
  • Taxation: Capital gains taxes and dividend taxes reduce the after-tax return. Investors may adjust their pre-tax expected return targets based on their individual tax situation and the tax implications of different asset classes.

By considering these factors, investors can refine their estimates for individual asset returns and better anticipate the overall performance and risk profile of their Expected Return of an Equally Weighted Portfolio.

Frequently Asked Questions (FAQ)

Q1: What is the main difference between an equally weighted portfolio and a market-cap weighted portfolio?

An equally weighted portfolio assigns the same dollar amount (or percentage) to each asset, regardless of its size. A market-cap weighted portfolio, like the S&P 500 index, allocates capital to assets based on their total market capitalization (share price times number of outstanding shares). Larger companies thus have a bigger impact on the portfolio's performance in a market-cap weighted structure. The Expected Return of an Equally Weighted Portfolio calculation is simpler as it doesn't require market cap data.

Q2: Does an equally weighted portfolio guarantee better diversification?

Not necessarily. While it diversifies across the *number* of assets, true diversification also considers the correlation between assets and their volatility. An equally weighted portfolio might still be heavily exposed to a single sector or risk factor if all its assets move in tandem. Analyzing correlations is key alongside the Expected Return of an Equally Weighted Portfolio.

Q3: How accurate are the expected return figures used in the calculation?

Expected return figures are estimations based on historical data, forecasts, and financial models. They are inherently uncertain and can be significantly impacted by unforeseen events, changes in economic conditions, or shifts in market sentiment. The Expected Return of an Equally Weighted Portfolio is a projection, not a guarantee.

Q4: Can I use negative expected returns in the calculator?

Yes, absolutely. If an asset is expected to lose value, you can input a negative percentage (e.g., -5 for a 5% expected loss). The calculator will correctly incorporate this into the portfolio's average expected return, accurately reflecting the potential downside. This is crucial for a realistic Expected Return of an Equally Weighted Portfolio.

Q5: What if I have more than 10 assets? Can the calculator handle it?

The calculator is designed to dynamically add input fields for each asset. You can continue adding assets beyond 10; the calculator will adjust the number of fields and the calculations accordingly. The formula for the Expected Return of an Equally Weighted Portfolio scales infinitely with the number of assets.

Q6: Does the calculator account for risk (e.g., standard deviation)?

No, this calculator specifically focuses on the Expected Return of an Equally Weighted Portfolio. It does not calculate or incorporate measures of risk such as standard deviation or beta. Risk assessment requires additional data and complex calculations beyond simple return averaging.

Q7: Should I always use an equally weighted portfolio?

Whether an equally weighted portfolio is suitable depends on your investment goals, risk tolerance, and market outlook. While it offers simplicity and automatic diversification, other weighting schemes (like market-cap weighted or risk parity) might better suit specific objectives or risk management strategies. It's one approach among many for managing the Expected Return of an Equally Weighted Portfolio.

Q8: How often should I rebalance an equally weighted portfolio?

Rebalancing frequency depends on market volatility and your strategy. Common approaches include rebalancing monthly, quarterly, annually, or when asset allocations drift by a predetermined percentage (e.g., 5%). Regular rebalancing ensures your portfolio remains truly equally weighted and helps to systematically sell high and buy low, which can impact your long-term Expected Return of an Equally Weighted Portfolio.

Related Tools and Internal Resources

© 2023 Your Financial Website. All rights reserved.

var numAssetsInput = document.getElementById('numAssets'); var assetReturnsInputsContainer = document.getElementById('assetReturnsInputs'); var resultsContainer = document.getElementById('results-container'); var mainResultDisplay = document.getElementById('main-result'); var avgIndividualReturnDisplay = document.getElementById('avgIndividualReturn'); var totalPortfolioReturnDisplay = document.getElementById('totalPortfolioReturn'); var numAssetsIncludedDisplay = document.getElementById('numAssetsIncluded'); var portfolioTableBody = document.querySelector('#portfolioTable tbody'); var returnsChartCanvas = document.getElementById('returnsChart'); var chartInstance = null; function updateChart(assetReturnsData) { var ctx = returnsChartCanvas.getContext('2d'); if (chartInstance) { chartInstance.destroy(); } var labels = assetReturnsData.map(function(item, index) { return 'Asset ' + (index + 1); }); var returns = assetReturnsData.map(function(item) { return item.return; }); var avgPortfolioReturn = assetReturnsData.length > 0 ? assetReturnsData.reduce(function(sum, item) { return sum + item.return; }, 0) / assetReturnsData.length : 0; var minValue = Math.min.apply(null, returns.concat([avgPortfolioReturn])); var maxValue = Math.max.apply(null, returns.concat([avgPortfolioReturn])); var range = maxValue – minValue; var yAxisMin = minValue – (range * 0.1); var yAxisMax = maxValue + (range * 0.1); if (yAxisMin > 0) yAxisMin = 0; if (yAxisMax < 0) yAxisMax = 0; if (range === 0) { yAxisMin = -10; yAxisMax = 10; } chartInstance = new Chart(ctx, { type: 'bar', data: { labels: labels, datasets: [{ label: 'Individual Asset Expected Return (%)', data: returns, backgroundColor: 'rgba(0, 74, 153, 0.6)', borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 1 }, { label: 'Portfolio Avg. Expected Return (%)', data: labels.map(function() { return avgPortfolioReturn; }), type: 'line', borderColor: 'rgba(40, 167, 69, 1)', backgroundColor: 'rgba(40, 167, 69, 0.2)', borderWidth: 2, fill: false, pointRadius: 5, pointBackgroundColor: 'rgba(40, 167, 69, 1)' }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: false, min: yAxisMin, max: yAxisMax, ticks: { callback: function(value) { return value + '%'; } } } }, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Individual Asset vs. Portfolio Average Expected Returns' } } } }); } function updateTable(assetReturnsData) { portfolioTableBody.innerHTML = ''; assetReturnsData.forEach(function(item, index) { var row = portfolioTableBody.insertRow(); var assetNameCell = row.insertCell(); var returnCell = row.insertCell(); assetNameCell.textContent = 'Asset ' + (index + 1); returnCell.textContent = item.return.toFixed(2) + '%'; }); } function validateInput(inputElement, errorElement, minValue, maxValue) { var value = inputElement.value.trim(); var errorMsg = ''; errorElement.classList.remove('visible'); if (value === '') { errorMsg = 'This field cannot be empty.'; } else { var number = parseFloat(value); if (isNaN(number)) { errorMsg = 'Please enter a valid number.'; } else if (minValue !== undefined && number maxValue) { errorMsg = 'Value cannot be greater than ' + maxValue + '.'; } } if (errorMsg) { errorElement.textContent = errorMsg; errorElement.classList.add('visible'); return false; } return true; } function calculateExpectedReturn() { var numAssets = parseInt(numAssetsInput.value); var assetReturnsData = []; var totalReturnSum = 0; var allInputsValid = true; var inputElements = assetReturnsInputsContainer.querySelectorAll('.asset-return-input'); inputElements.forEach(function(element) { var returnInput = element.querySelector('input[type="number"]'); var errorElement = element.querySelector('.error-message'); var isValid = validateInput(returnInput, errorElement, -100, 500); // Example range: -100% to 500% if (!isValid) { allInputsValid = false; } var assetReturn = parseFloat(returnInput.value); assetReturnsData.push({ return: assetReturn }); totalReturnSum += assetReturn; }); if (!allInputsValid || numAssets < 2) { if (numAssets < 2) { var numAssetsError = document.getElementById('numAssetsError'); numAssetsError.textContent = 'Portfolio must have at least 2 assets.'; numAssetsError.classList.add('visible'); } resultsContainer.classList.add('hidden'); return; } else { document.getElementById('numAssetsError').classList.remove('visible'); } var averageIndividualReturn = totalReturnSum / numAssets; var totalPortfolioReturn = averageIndividualReturn; // For equally weighted, it's the same avgIndividualReturnDisplay.textContent = averageIndividualReturn.toFixed(2) + '%'; totalPortfolioReturnDisplay.textContent = totalPortfolioReturn.toFixed(2) + '%'; numAssetsIncludedDisplay.textContent = numAssets; mainResultDisplay.textContent = totalPortfolioReturn.toFixed(2) + '%'; resultsContainer.classList.remove('hidden'); updateTable(assetReturnsData); updateChart(assetReturnsData); } function generateAssetInputFields() { var numAssets = parseInt(numAssetsInput.value); assetReturnsInputsContainer.innerHTML = ''; // Clear previous inputs if (isNaN(numAssets) || numAssets < 2) { numAssets = 2; // Default to 2 if invalid numAssetsInput.value = numAssets; } for (var i = 0; i < numAssets; i++) { var div = document.createElement('div'); div.classList.add('input-group', 'asset-return-input'); var label = document.createElement('label'); label.textContent = 'Expected Return for Asset ' + (i + 1) + ' (%)'; var input = document.createElement('input'); input.type = 'number'; input.className = 'asset-return'; input.value = (Math.random() * 20 – 10).toFixed(2); // Default with some random values for demonstration input.min = "-100"; input.max = "500"; var helperText = document.createElement('span'); helperText.classList.add('helper-text'); helperText.textContent = 'Enter the expected annual return percentage for this asset.'; var errorDiv = document.createElement('div'); errorDiv.className = 'error-message'; div.appendChild(label); div.appendChild(input); div.appendChild(helperText); div.appendChild(errorDiv); assetReturnsInputsContainer.appendChild(div); } // Attach event listeners to new inputs for real-time update var inputElements = assetReturnsInputsContainer.querySelectorAll('input[type="number"]'); inputElements.forEach(function(input) { input.addEventListener('input', calculateExpectedReturn); }); } function resetCalculator() { numAssetsInput.value = 5; generateAssetInputFields(); // Regenerate fields with defaults calculateExpectedReturn(); // Recalculate with defaults resultsContainer.classList.add('hidden'); // Hide results initially after reset } function copyResults() { var mainResult = mainResultDisplay.textContent; var avgIndividual = avgIndividualReturnDisplay.textContent; var totalPortfolio = totalPortfolioReturnDisplay.textContent; var numAssetsIncluded = numAssetsIncludedDisplay.textContent; var tableRows = portfolioTableBody.querySelectorAll('tr'); var tableContent = "Individual Asset Expected Returns:\n"; tableRows.forEach(function(row) { var cells = row.querySelectorAll('td'); tableContent += cells[0].textContent + ": " + cells[1].textContent + "\n"; }); var textToCopy = "Equally Weighted Portfolio Expected Return:\n\n" + "Total Expected Portfolio Return: " + mainResult + "\n" + "Average Expected Return of Individual Assets: " + avgIndividual + "\n" + "Number of Assets Included: " + numAssetsIncluded + "\n\n" + tableContent + "\n" + "Formula: The expected return of an equally weighted portfolio is the average of the expected returns of all individual assets."; navigator.clipboard.writeText(textToCopy).then(function() { // Optional: show confirmation message var copyButton = document.querySelector('.copy-button-container button'); var originalText = copyButton.textContent; copyButton.textContent = 'Copied!'; setTimeout(function() { copyButton.textContent = originalText; }, 2000); }).catch(function(err) { console.error('Failed to copy text: ', err); // Fallback for older browsers or specific environments var textArea = document.createElement("textarea"); textArea.value = textToCopy; textArea.style.position = "fixed"; textArea.style.left = "-9999px"; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'Copied!' : 'Copy failed'; var copyButton = document.querySelector('.copy-button-container button'); var originalText = copyButton.textContent; copyButton.textContent = msg; setTimeout(function() { copyButton.textContent = originalText; }, 2000); } catch (err) { console.error('Fallback copy failed: ', err); } document.body.removeChild(textArea); }); } numAssetsInput.addEventListener('input', generateAssetInputFields); document.getElementById('calculateBtn').addEventListener('click', calculateExpectedReturn); document.getElementById('resetBtn').addEventListener('click', resetCalculator); // Initial setup generateAssetInputFields(); calculateExpectedReturn(); // Calculate initial values based on defaults resultsContainer.classList.add('hidden'); // Hide results on load

Leave a Comment