Stock Average Calculator
Updated on 22 Oct 2026 · Checked by Aotob
Your 100 shares cost an average of $35.20 each.
At $35.00 they are worth $3,500.00, a loss of $20.00.
Average price
$35.20a share
The price needs to rise 0.6% to get back to your average.
Show the working
Average = (50 × 40.00 + 30 × 32.00 + 20 × 28.00) ÷ 100 = 35.20
Your buys
| Buy | Shares | Price | Cost |
|---|---|---|---|
| 1 | 50 | 40.00 | 2,000.00 |
| 2 | 30 | 32.00 | 960.00 |
| 3 | 20 | 28.00 | 560.00 |
| Total | 100 | 35.20 | 3,520.00 |
Questions people ask
How is the average price worked out?
Total spent ÷ total shares. A big buy at one price pulls the average towards it more than a small one.
What is averaging down?
Buying more after a fall to lower your average cost. It lowers the price needed to break even, but adds to a position that is losing.
Does the tax office use the same average?
The UK uses a pooled average (section 104 holding), and Canada uses adjusted cost base, both close to this. The US lets you pick lots, so the cost of the shares you sell can differ.
Updated 22 Oct 2026Source: Standard financial maths (time value of money)Checked by AotobFees not included unless you add them to prices. Not financial advice.Report an issue