Stock Average Calculator
Calculate your cost basis and average stock price from multiple purchases at different prices
Calculate Stock Cost Basis
Current market price per share
Stock Purchases
Purchase #1
Purchase #2
Cost Basis Results
Total Investment: $12500.00 | Current Value: $15000.00
Unrealized Profit/Loss: +$2500.00
Good: Above market average return
Investment Analysis
Example Calculation
AMD Stock Dollar Cost Averaging Example
Purchase 1: 1 share at $85.00
Purchase 2: 1 share at $84.00
Purchase 3: 1 share at $83.00
Purchase 4: 1 share at $75.00
Purchase 5: 1 share at $77.00
Purchase 6: 1 share at $75.50
Current Price: $100.00
Calculation
Total Investment = $85 + $84 + $83 + $75 + $77 + $75.50 = $479.50
Total Shares = 6 shares
Cost Basis = $479.50 ÷ 6 = $79.92
Current Value = $100 × 6 = $600.00
Profit = $600.00 - $479.50 = $120.50
Profit Percentage = ($120.50 ÷ $479.50) × 100% = 25.13%
Cost Basis Benefits
Risk Reduction
Lower average cost per share
Dollar cost averaging reduces volatility impact
Better Profit Potential
Increased upside opportunity
Lower break-even point
Strategic Positioning
Build positions systematically
Take advantage of market volatility
Dollar Cost Averaging Tips
Buy more shares when prices are lower
Invest consistently over time
Track your cost basis regularly
Good cost basis is below current price
Use market volatility to your advantage
Understanding Stock Cost Basis
What is Cost Basis?
Cost basis is the weighted average price you paid for your shares across multiple purchases. It's crucial for calculating your actual profit or loss and determining tax implications.
Why Calculate Cost Basis?
- •Accurate profit/loss calculations
- •Tax reporting requirements
- •Investment performance tracking
- •Strategic decision making
Cost Basis Formula
Cost Basis = Total Investment ÷ Total Shares
Total Investment = Σ(Price × Quantity)
- Price: Purchase price per share for each buy
- Quantity: Number of shares purchased
- Weighted Average: Accounts for different purchase sizes
Strategy: Lower cost basis provides better profit potential and risk management