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Portfolio Rebalancing Calculator

Calculate buying and selling adjustments to align your portfolio back to target asset weights.

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Calculation Parameters

Specify your inputs below.

Calculated Result

Total Portfolio Assets $12,000.00
Required Stock Buy/Sell Sell $0.00
Required Bond Buy/Sell Buy $0.00
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Expert Tip

Rebalancing helps enforce buy-low/sell-high discipline by moving profits from overperforming assets back to targets.

How this Calculator Works

This calculator determines the adjustments needed to return your investment portfolio to its target asset allocation. Over time, differing market performances alter asset weightings, exposing you to unintended risk. Portfolio managers use rebalancing to sell overperforming assets and buy underperforming ones.

Formula & Methodology

Target Value_i = Total Portfolio Value * (Target Weight_i / 100) Adjustment_i = Target Value_i - Current Value_i - Total Portfolio Value is the sum of all current asset values. - Target Weight_i is the target allocation percentage of asset i. - Current Value_i is the actual value of asset i.

Step-by-Step Calculation Example

Here is a step-by-step example showing how the calculations are performed:

A portfolio is worth $10,000, consisting of Stock A ($6,500) and Stock B ($3,500). Target allocation is 50% for Stock A and 50% for Stock B. 1. Calculate target values: Stock A = $5,000, Stock B = $5,000. 2. Calculate Stock A adjustment: $5,000 - $6,500 = -$1,500 (sell $1,500). 3. Calculate Stock B adjustment: $5,000 - $3,500 = +$1,500 (buy $1,500). Result: Rebalance by selling $1,500 of Stock A and purchasing $1,500 of Stock B.

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Detailed Insights & Expert Guide

ℹ️ About this Calculation

This investment analytics calculator evaluates portfolio yield, compounding growth, risk-adjusted returns, present/future asset valuations, and capital growth metrics based on CFA and modern portfolio theory (MPT) principles.

Variable Glossary

Input

Investment Parameters

Initial principal, periodic contribution, interest rate, discount factor, holding period, or asset price inputs.

Parameter

Performance Metrics

Compound Annual Growth Rate (CAGR %), Net Present Value (NPV), Internal Rate of Return (IRR), or Sharpe ratio.

How to Calculate Step-by-Step

1

Step 1

Enter your initial investment capital, asset purchase prices, or cash flow streams.

2

Step 2

Set compounding frequency, discount rate, or benchmark risk-free rate factors.

3

Step 3

Review calculated total return value, annualized growth %, or risk-adjusted alpha/beta statistics.

FAQ

How does compounding frequency impact investment returns?
More frequent compounding (e.g. monthly or daily vs. annually) generates higher effective annual yields (APY) because interest is calculated on accumulated interest earlier in the period.
What is the difference between Sharpe Ratio and Sortino Ratio?
The Sharpe ratio divides excess return by total standard deviation (both upside and downside volatility), whereas the Sortino ratio divides excess return by downside deviation only.
Should investment calculators replace professional wealth management?
No. Investment calculators model financial mathematics under assumed growth rates. Actual market performance fluctuates, so consult a licensed financial planner (CFP) or RIA for personalized advice.