Stock Average Down Calculator
New average cost after buying more shares.
Enter your values
ⓘ Live results
Results
- New average cost
- $37.88
- Total shares
- 160
- Total invested
- $6,060.00
- Gain needed to break even
- 22.18%
Working
- 1(100x$42.00 + 60x$31.00) / 160 = $37.88
Quick answer
Your new average cost is total money invested divided by total shares held after the additional purchase.
avg = (shares1 x price1 + shares2 x price2) / (shares1 + shares2)
How to use the Stock Average Down Calculator
- 1Enter your existing share count and average price.
- 2Enter the new purchase quantity and price.
- 3Check how far the stock must rise from here to break even.
Worked example
Using the values the calculator loads with:
Inputs
- Shares owned100
- Average price paid42 $
- New shares60
- New price31 $
Results
- New average cost$37.88
- Total shares160
- Total invested$6,060.00
- Gain needed to break even22.18%
- (100x$42.00 + 60x$31.00) / 160 = $37.88
Frequently asked questions
Is averaging down smart?
Only when your original thesis still holds; otherwise it concentrates a losing position.
Does it lower my loss?
It lowers the break-even price, not the dollar loss already incurred.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.