What does recovering from a loss actually require?

An account falls from 100 to 80. It has lost 20%. Returning from 80 to 100 requires a 25% gain.

The difference comes from the denominator. The loss was measured against the larger starting amount. Recovery is measured against the smaller amount that remains.

As the drawdown deepens, the recovery requirement grows faster. A 50% loss needs a 100% gain to return to the previous level. These are arithmetic relationships, not predictions about how quickly a trader can recover.

That makes drawdown useful for more than describing discomfort. It shows how much future performance the account now needs before it can exceed its previous peak. Withdrawals during that period can add another demand on the remaining capital.

It also helps separate a losing streak from an account drawdown. Several uninterrupted losses can produce a drawdown, but so can a longer sequence containing small wins and larger losses. Counting only the longest streak misses part of the account's experience.

An account reaching zero, a missed income payment, a broker liquidation and a daily loss-rule breach are different events. A model must define the event before reporting its probability. The career explorer records unpaid withdrawals; the losing-run example below assumes independent trades. Neither supplies a general real-world ruin rate.

The shared career discussion made recovery and losing runs central questions, rather than footnotes to a growth calculation. Our scenario work distinguishes the deepest equity decline from the longest run of losing trades.

It also keeps sizing policies separate. Reducing size after a decline can soften further losses while slowing recovery if performance subsequently improves. A policy needs to be compared over complete paths, rather than judged only at the moment it reduces exposure.