Stock Average Calculator - Cost Basis

Your details

The current share price. Leave at zero if you only want the cost basis without a profit/loss calculation.
per share
Number of shares bought in the first purchase.
Brokerage fee or commission paid for this lot (optional).
Currency
Average cost per shareUnrealized gain
$111.0000

Weighted-average cost basis per share across all lots, including commissions.

Total shares held25
Total invested$2,775.00
Current position value$3,875.00
Unrealized profit / loss$1,100.00
Return on investment39.64%
Total invested$2,775.00
Current value$3,875.00
Unrealized P/L$1,100.00

Average cost basis: $111.00 per share

  • Your weighted-average cost basis is $111.00 per share across 25 total shares, for a total investment of $2775.00.
  • At the current price of $155.00, your position shows an unrealized gain of $1100.00 (39.64%).
  • You are $44.00 per share above your break-even of $111.00.
  • Cost basis does not include dividends received or potential tax obligations; consult a tax adviser for capital-gains treatment of your specific lots.

Next stepIf you are averaging down, check whether the position still fits your risk budget at the larger share count before adding.

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