Trade Grading & Exponential Sizing

Most traders bet roughly the same amount on every trade. The best ones don't. They grade each opportunity — is this an A+ setup or a mediocre C? — and then size with skew, risking far more on the rare great trades than on the average ones. It sounds aggressive, but it follows directly from expected value: if a handful of trades each year carry most of your edge, betting them the same as everything else leaves enormous money on the table.

Bet size should rise sharply with setup quality — not stay flat across A's, B's, C's, and D's.

A grade — the standout

The memorable, once-or-twice-a-month trade you'll look back on at year-end. This is where you press hardest, if liquidity and your skill allow.

B grade — solid & common

A best-trade-of-the-day-caliber setup. Good, frequent, worth normal size — but not a reason to swing for the fences.

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C and D — small or skip

A C is an everyday flyer with thin edge; a D is a bored 50/50 toss-up you should skip. Betting these like your A's is how good traders give back profits.

Pocket aces, not 9-2

Like a poker player who raises with aces and folds junk, you scale your bet to the strength of your hand. "80% of profits come from 5% of trades" — so the few big edges have to count.

Two prerequisites

This is not for beginners. First, you must be able to tell an A from a B in real time — a skill that takes years. Second, the size itself must not change how you trade: if a bigger position makes you hesitate or exit early, you've sized too big.

Build up to it

Start by sizing uniformly while you find consistency. Then, once you can grade your setups and trust your edge, gradually add skew — bigger on the best, smaller on the rest — within your risk limits.

Where this comes from — and how the pros say it

Betting more when your edge is larger is the core insight of the Kelly criterion and of every professional gambler — Edward Thorp beat blackjack and markets by sizing bets to his edge, and Van Tharp argues position sizing matters more than entries. Mike Bellafiore of SMB Capital tells traders it's their job to "swing the bat hard on your best setups." Modern prop trader Lance Breitstein packages it as a simple practice: grade every trade A/B/C/D, then size exponentially, not uniformly.

WATCH Lance Breitstein — "The Trade Sizing Strategy that Made Me Millions"