In simple terms
Averaging down means buying more of an asset already held after its price has fallen. The additional purchase lowers average entry: one unit at 100 and one at 80 produce an average of 90.
What the average does not show
Exposure has doubled. If price then falls from 80 to 60, the loss applies to two units, not one. Average cost is an accounting property of the position; it is not protection and does not change market probabilities.
A controlled procedure defines tranches, maximum size, invalidation, and total tolerable loss before the first entry. If additions are driven only by the desire to “get back to breakeven,” the risk is no longer the one originally planned.
Discretionary averaging is not DCA, which uses preset amounts and intervals regardless of short-term price moves.
Limit
Averaging down does not recover a loss or make a trade more valid. It may move breakeven closer to current price, but at the cost of more capital at risk and a potentially larger loss.
Sources
- CME Group, Proper Position Size — shows why quantity, stop distance, and monetary risk must be evaluated together.
- CME Group, Risk Management and Your Trade Plan — includes maximum exposure, leverage, and per-trade loss among advance parameters.
- Investor.gov, Dollar Cost Averaging — defines equal investments at regular intervals, distinct from reactive averaging.