When to scale up size

Earn the size by earning the sample

After your first 50 trades you might feel ready to scale up. Maybe you've had three green weeks in a row. Maybe a friend doubled their account in a month. Both are bad reasons. Scaling up size is one of the highest-leverage decisions in a trading career, which means it deserves a slow, evidence-based answer. Not a gut answer.

Three gates have to open before you scale. Gate one: sample size. At least 100 trades that all followed the plan — no impulse entries, no skipped checklist items. Gate two: R-distribution. Winners average 2R or higher, losers cluster around 1R, no outsized losses where you held past stop. Gate three: positive expectancy. Net R per trade across the 100 is positive after spreads and slippage. If any gate is closed, you don't scale yet.

When the gates do open, scale by 10 to 25 percent, not by doubling. If you were risking 1 percent ($5 on a $500 account), step to 1.1 or 1.25 percent ($5.50 to $6.25). That feels small. It is small on purpose. Emotional capacity scales sub-linearly with dollars at risk. A doubled position triggers more than double the cognitive load because the loss aversion curve is not linear. A 10-25 percent bump is what your nervous system can absorb without contaminating execution.

Trade the new size for the next 50 trades, then re-evaluate the same three gates. If they're still open, bump again. If one closed, hold size or step back. The pattern is: prove, bump, prove, bump. Slow scaling is how careers are built. Fast scaling is how the same $500 account ends three times in a row.

Recap: scale only after 100+ trades, healthy R-distribution, and positive expectancy. Then 10-25 percent bumps, never doubling. Prove, bump, prove, bump.