FREE ONLINE CALCULATOR

Stock Average Down Calculator

Estimate the weighted average stock purchase price after an additional share purchase.

✓ Instant results ✓ Editable inputs ✓ Formula explained

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FINANCE · TOOLS

TRANSPARENT FORMULAS NO ACCOUNT REQUIRED INVESTMENT MATH

CALCULATION TOOL

Stock Average Down Calculator

Change any value and calculate again.

Uses the values you enter. No account required.

NASDAQ SYMBOL DIRECTORY

Stock Profit Calculator by Ticker

Choose a listed stock and enter your own buy and sell prices.

AAPL Apple Inc. NVDA NVIDIA Corporation MSFT Microsoft Corporation AMZN Amazon.com, Inc. GOOGL Alphabet Inc. AMD Advanced Micro Devices, Inc. TSLA Tesla, Inc. META Meta Platforms, Inc. PLTR Palantir Technologies Inc. SOFI SoFi Technologies, Inc. INTC Intel Corporation NFLX Netflix, Inc. AAL American Airlines Group, Inc. AAOI Applied Optoelectronics, Inc. AAON AAON, Inc. AARD Aardvark Therapeutics, Inc. ABAT American Battery Technology Company ABCL AbCellera Biologics Inc. ABEO Abeona Therapeutics Inc. ABLV Able View Global Inc. ABNB Airbnb, Inc. ABOS Acumen Pharmaceuticals, Inc. ABSI Absci Corporation ABTC American Bitcoin Corp.

Company names and symbols are taken from a Nasdaq listing snapshot. Stock prices, dividends, and live financial data are not supplied by this calculator.

Browse all 2,731 Nasdaq stock symbols →

HOW IT WORKS

The calculation

New average price = (existing shares × existing price + new shares × new price + new fees) ÷ combined shares.

Read the full guide →

ASSUMPTIONS

Know the limitations

This is a purchase cost-basis estimate, not a recommendation to buy more of a falling stock. Previous transaction fees should be included in the initial average if applicable.

Results are estimates derived from your inputs.

ABOUT THIS TOOL

When to use a stock average down calculator

Estimate the weighted average stock purchase price after an additional share purchase.

All assumptions are visible and adjustable. Check rates and underlying data against original sources before making a decision.