What Is Position Sizing?

Position sizing is the most boring math in trading. It also decides whether a bad trade costs you a bad day or a bad year.

Chad has a name for the trader who skips this math. He calls it "Stage 2.5," with "a $20,000 trading account... go full tilt, day one," sizing "willy-nilly" off the slider. As he puts it, "We've experienced this many, many times, even in this Mastermind."

What's the position sizing formula?

Three inputs, and size is the output, never an input:

Position size (units) = dollar risk divided by the distance from entry to stop.

For a long, the distance is entry minus stop. For a short, stop minus entry. Units times entry price gives the notional exposure.

A $10,000 account risking 1% has $100 to work with. Entry is 60,200 on Bitcoin and the stop is 59,500, a distance of 700. $100 divided by 700 is about 0.143 BTC, roughly $8,600 of exposure, or about 8,600 contracts on a platform that quotes in one-dollar contracts.

A stop twice as far away means half the size, and the dollar risk doesn't move.

Doesn't a wider stop mean a bigger position sizing loss?

No, because the size shrinks to match. Chad puts it this way: "The further away your entry is from your stop loss, the greater the exposure on the contracts. So we compensate by reducing our contract size and using a fixed risk at the stop loss, so our risk is always predetermined and pre-quantified."

The stop sets the size. Never the other way around.

Can you do position sizing on a $1,000 account?

Yes. Illustrative numbers: the trader risks 2% ($20), inside the beginner range of 1 to 2%.

• SOL has equal highs at 150. Price sweeps to 153, then closes back below 150.
• Short entry comes after that failure, at 149. The stop is 153, the high of the sweep, because a move back above it proves the idea wrong.
• Distance is 4. Size is $20 divided by 4, which is 5 SOL, about $745 of exposure.
• The range low at 137 is the target, 12 away, a 1:3 ratio, which passes the 1:3 filter.
• Leverage comes last. On isolated margin at 3x the position ties up about $248; at 10x, about $75. Either way about $20 is at risk at the stop before fees and slippage.

Apply timeframe imposition. Take the same short from 4-hour structure with invalidation at 158: distance 9, size about 2.2 SOL, dollar risk still $20.

How do we do position sizing at Crypto Renegades?

Sizing is decision three of the Decision Protocol, and it can't happen before decision two, the invalidation level. Chad Wittfeldt teaches it as a contract size calculation: set the risk budget, put the stop where the analysis is proven wrong, then add contracts until the estimated amount at the stop matches the budget. Leverage comes after all of that.

In Chad's words: "Trading takes consistency of variables. We wanna be very, very consistent with our variables." The same dollar risk every trade is what makes a journal readable and a review honest.

Splitting an entry with a resting just in case order? Size once against one stop, then divide. And fund the account with unemotional risk capital, so fear never tests the rule.

So where does position sizing go wrong?

Sizing by feel or by margin. "I'll put $500 in at 10x" says nothing about what happens at the stop, so real risk swings from trade to trade. Funny how the leverage screenshots online never show the stop. Same problem when a slider sets size as a percentage of the balance and the stop goes a fixed 10% away: two numbers, neither from the chart.

The second mistake is adding after entry without redoing the math. Double the contracts against the same stop and you've doubled the risk, even with a better entry.

What's your position sizing homework?

Take your last trade's entry, stop and intended risk, and run the formula. If the size you used doesn't match... now you know where the surprises come from.

Examples: crypto position sizing and how to size a crypto position with $1,000. Run your numbers in the position size calculator. The full framework is in crypto risk management.

Sources: the CFTC's customer advisory on virtual currency trading advises trading only money you can afford to lose, and Investor.gov's What is Risk? covers the volatility risk that position sizing exists to contain.