Stock Average Calculator
Calculate weighted average price of your stock purchases
Purchase Lots
Stock Average
Stock Average Calculator
The Stock Average Calculator helps traders and investors calculate the weighted average price of their stock purchases across multiple lots. Whether you're averaging down during a dip or building a position over time, this tool gives you a clear picture of your effective cost per share.
Key Components
- Purchase Price per Share
- Number of Shares per Lot
- Weighted Average Price
- Total Investment
- Profit/Loss Analysis
How It Works
The calculator uses a weighted average formula to determine your effective cost per share:
- Average Price = Sum(Price x Quantity) / Sum(Quantity)
- Total Investment = Sum of all (Price x Quantity)
- Profit/Loss = (Current Price - Average Price) x Total Shares
- P&L Percentage = ((Current Price - Average Price) / Average Price) x 100
Benefits
- Track your true cost basis across multiple purchases
- Make informed averaging decisions
- Understand your breakeven price
- Calculate unrealized profit or loss instantly
- Plan your next purchase strategically
Using the Calculator
Add your stock purchase lots with the price and quantity for each buy. Optionally enter the current market price to see your profit or loss. The calculator will instantly compute your weighted average cost and provide a complete investment summary.
Track Your Average Cost
Enter each purchase transaction (date, quantity, price) for a stock. The calculator computes your weighted average cost, total investment, and current gain/loss based on the market price. It is especially useful for tracking positions built over multiple purchases at different price levels.
Frequently Asked Questions
What is cost averaging in stocks?
Cost averaging means buying the same stock at different prices over time, which results in an average cost per share that smooths out price volatility. If you buy 100 shares at Rs 200 and 100 shares at Rs 150, your average cost is Rs 175. This works in your favour when the stock recovers above the average price.
Should I average down on a falling stock?
Average down only if your original investment thesis remains intact and the stock is fundamentally sound. Never average down on a stock falling due to deteriorating business quality or governance issues. Set a limit on how much of your portfolio you will allocate to any single stock (5-10% max). Averaging down on a fundamentally broken stock is a common wealth destroyer.
How do I calculate my average stock price?
Weighted average price = Total amount invested / Total shares held. If you bought 50 shares at Rs 300 (Rs 15,000) and 100 shares at Rs 250 (Rs 25,000), your average = Rs 40,000 / 150 shares = Rs 266.67 per share. The calculator handles multiple buy and sell transactions.
