// by seankriegler.com

Share Averaging Down Calculator

Model averaging down strategies to recover a losing stock position

Initial Position (from your broker)

Average Purchase Price (avg cost)

Cost per share (from broker)

Number of Shares Owned

Supports fractional shares (e.g., 10.0374)

Current Market Price

Current bid/ask price

Total Commission Paid (on initial buy)

Leave 0 if already in avg price, or enter actual commission

Calculate New Position

Choose what you want to find: how much to spend, target average cost, or break-even price.

I have $X to spend Target average cost Break even at price

Amount to spend ($)

How much money you'll spend at current market price

Results

Shares to Buy

$ to Spend

New Total Shares

New Total Invested

New Average Cost

New Loss %

New Loss ($)

Break-Even Price

Original Position

Sensitivity Analysis

% of Input	$ to Spend	Shares to Buy	New Avg Cost	New Loss %

Current Position (Validation)

// Averaging Down Basics

If a stock is down 40%, buying more at the lower price reduces your average purchase cost, bringing your break-even price closer to current market levels. This lowers the gain % you need to recover.

// Dollar-Cost Averaging Effect

Each additional purchase at the same (or lower) price reduces your average cost and position loss. The effect diminishes as you add more capital, approaching the market price asymptotically.

// Commission & Costs

Each trade incurs a commission. On small positions this can significantly impact your break-even. Factor in both buy and eventual sell costs.

// Risk of Averaging Down

Averaging down works if price recovers, but if the stock continues falling you increase losses. Only average down if you believe in the fundamentals.