Averaging Down

Stock trading dictionary: meaning, example and how traders use it.

Last updated: October 17, 2026

Definition: Averaging down is the strategy of buying additional shares of a stock after its price has fallen, which lowers the investor's average cost per share. It can reduce the break-even price but also increases exposure to a losing position.

How averaging down works

When you buy shares at different prices, your cost basis is the weighted average of all purchases. Buying more at a lower price pulls that average down, so the stock needs a smaller recovery for the position to return to break-even.

The approach is popular with long-term investors who believe a company's value has not changed even though its share price has dropped. It is the opposite of averaging up, which means adding to a position as it rises.

Example: calculating your new average cost

Suppose you buy 100 shares at $50, investing $5,000. The stock falls to $40, and you buy another 100 shares for $4,000. You now own 200 shares for $9,000, an average cost of $45 per share.

Before the second purchase, the stock needed to climb 25% (from $40 back to $50) to break even. After averaging down, it needs to rise only 12.5% (from $40 to $45). But if the stock instead falls to $30, your loss is $3,000 on 200 shares rather than $2,000 on 100 shares, because you doubled your exposure.

The same arithmetic works at any scale: total dollars invested divided by total shares owned always gives the new average cost.

Averaging down vs dollar-cost averaging

The two are often confused. Dollar-cost averaging means investing a fixed amount on a regular schedule regardless of price, commonly into a diversified fund or ETF. Averaging down is a discretionary decision to add to a specific position because it has fallen. The first is a disciplined savings habit; the second is a bet that a particular decline is temporary.

Risks of averaging down

  • Catching a falling knife: a falling price may reflect real deterioration in earnings or the business, and the decline can continue into a prolonged bear market.
  • Concentration: adding to a loser increases its weight in your portfolio and amplifies investment risk.
  • Margin danger: averaging down with borrowed money through margin can trigger a margin call if the price keeps falling.
  • Worst case: in a bankruptcy, shareholders may lose their entire investment, including the extra shares.

When investors consider averaging down

Investors who use the strategy usually re-examine the original thesis before adding money. They check whether the drop came from a broad market correction or from company-specific problems, set a maximum position size in advance, and avoid using leverage. Some prefer to wait for the price to stabilize or show a reversal before buying more. None of these steps removes the risk; they simply make the decision deliberate rather than emotional.

Frequently asked questions

Is averaging down a good strategy?

It can lower your break-even price if the stock eventually recovers, but it increases losses if the decline continues. Its success depends on whether the original investment thesis is still valid.

How do you calculate the average price after averaging down?

Add the total dollars invested across all purchases and divide by the total number of shares owned. That gives your new average cost per share.

What is the difference between averaging down and dollar-cost averaging?

Dollar-cost averaging invests a fixed amount on a set schedule regardless of price. Averaging down is buying more of a specific position only because its price has fallen.

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For information only, not investment advice. See the disclaimer.