Track your cost basis across multiple stock purchases to find your average price.

Summary

Avg. Cost Basis

$143.33

Total Shares

15

Total Invested

$2,150.00

Purchases

2 / 1000

Price vs. Average Over Time
Buy Price
Avg Cost Basis
Add Purchase
Purchase History (2)
#Price / ShareSharesTotal CostRunning AvgRemove
1$150.00 ▲10$1,500.00$150.00
2$130.00 ▼5$650.00$143.33
Description
The Average Stock Price Calculator helps investors understand their true cost basis when buying a stock across multiple transactions at different prices.
Here`s how each value is calculated:
  • Price / Share: The price you paid per share in that transaction.
  • Shares: How many shares you purchased in that transaction.
  • Total Cost: Price × Shares for each individual purchase.
  • Average Cost Basis: Total cost of all purchases ÷ Total shares owned.
  • Running Average: Your cumulative average cost after each successive purchase.
The ▼ indicator (green) means you bought below your final average — a good buy. The ▲ indicator (red) means you bought above your final average.