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Stock Average Cost Calculator

Find your true average cost basis when you've bought shares at multiple prices. Add each purchase, see per-share cost, and track gains or losses vs the current price.

Purchases
Shares
Price / share ($)
Fee ($)
$5,000.00
$3,255.00
Current price

Commission if you sold all shares today

Cost basis & P/L
Average cost per share
$55.03
$55.00 excluding fees
150
Total shares
$8,255.00
Total cost
$5.00
Total fees
$10,500.00
Current value
$14.97
Per-share gain
$10,500.00
Net proceeds
$2,245.00
Total gain/loss
27.20%
Return %
📈 Profit of $2,245.00 (+27.20% return on $8,255.00 invested)

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