Position sizing is where most funded traders either protect their accounts or blow them. It's not glamorous. It's not exciting. But getting it right is the single biggest factor in whether you survive long enough to become profitable.
Here's the complete system for sizing your trades in a funded account — from boxing in your trades to calculating your exact risk per contract.
The Boxing Technique
Before you ever think about how many contracts to trade, you need to "box in" your trade. This means identifying two things:
- Your profit target — where you expect the trade to go
- Your stop loss — where your idea gets invalidated
"What I do is I call this technique boxing in your trades. I've taken the normal Fibonacci tool, removed pretty much everything except the zero, the one, and the 0.236. It helps me visualize my profit target, my stop loss location, and then the area where I have an appropriate risk-reward ratio to enter a trade."
For bullish trades, draw from top to bottom. For bearish, bottom to top. The green line (0.236 level) marks the deepest entry point where your risk-reward still makes sense.
Risk-Reward: The Foundation of Everything
"The risk-reward ratio by default is a 1 to 3.5. So for every dollar that I am risking, I'm expecting to make three and a half dollars in return."
This isn't arbitrary. It's math: "If I'm flipping a coin, and I'm getting 50 cents for every time I lose but a dollar every time I win, I want to be flipping that coin as many times as I possibly can."
The deeper you buy inside the risk-reward zone, the better your odds: "If you're getting 10-to-1 risk reward instead of 3-to-1, that means you need to be correct on only 10% of your decisions to still remain profitable, instead of needing to be correct on 35%."
The 1% Rule
Here's your baseline: "Your max daily loss should be approximately no more than 1% of your account balance."
| Account Size | Max Daily Loss |
|---|---|
| $50,000 | $500 |
| $100,000 | $1,000 |
| $150,000 | $1,500 |
Now divide that by your expected number of trades: "You can take one trade with $1,500 worth of risk, or five trades with $300 risk, or three trades with $500 worth of risk. Allow the game of probabilities to smooth out your P&L."
Michael's preference is clear: "I would prefer taking more opportunities with smaller position sizing, because I think it impacts me less psychologically. When I'm correct, I can still get tremendous follow-through and build up my position sizing. Whereas if I take only one trade, I put a lot of pressure on myself — that idea has to be perfect."
Find Your Breaking Number
Everyone has a number that pushes them over the edge: "Once you lose X amount or you see X amount go from green to red, you will often have a negative psychological reaction. It's your job to make sure that your position sizing is never hitting a number that puts you on edge."
"Your number might be different than my number or different to every other client. Maybe your max loss that you're willing to take is a million bucks. Maybe it's 10 bucks. Maybe it's somewhere in the middle. But you need to have an honest conversation with yourself about that."
Michael's personal number: "I'm looking for a max loss of about $500 to $600 per trade at its maximum. $500 if I'm working with one contract, up to $600 if I'm working with more than one contract."
How to Calculate Risk Using the Order Window
Here's the practical workflow using TradingView's paper trader:
- Enter your reference price (the blue line / entry zone)
- Enter your stop loss price
- Set your contracts to 1
- Read the dollar risk
"If I'm looking at my max risk per trade with one contract, and I'm risking $670, that's more than the max loss I'm willing to accept."
Now you have two options:
Option 1: Get a Better Entry
"If I change my price to 21,270 instead of 21,281, now I'm risking $455 per contract." A deeper pullback reduces your risk without changing your stop loss.
Option 2: Size Down
Switch from minis to micros. "Micros will allow you to have more positions and a smaller profit per contract hit."
The Deeper Pullback Advantage
"If I look for a deeper pullback — entry at 21,256 with a stop at 21,247 — now I'm risking $180. I could increase my position sizing to two or potentially even three contracts and still stay within my max loss number."
This is the core principle: "You make life a lot easier by buying deeper pullbacks and then setting yourself up to have tight risk management."
The Survival Test
Your max loss per trade should pass this test: "My max loss per trade should be a number that is so conservative that I could take 3, 4, 5, 10 trades in a row, lose on every single one of them, and still have access to my trading account."
If you can't survive a 10-trade losing streak, your sizing is too aggressive. Period.
Position Sizing on Different Instruments
Risk calculation changes by instrument because of different point values:
- NQ (Nasdaq): $20 per point — a 25-point stop = $500 risk per contract
- ES (S&P 500): $12.50 per point
- CL (Crude Oil): $10 per point
"On NQ, my sweet spot for where my pain point and my trade gets invalidated is going to be 25 points away. That's $500 with one contract."
Always run the math through your order window calculator before clicking submit.
Saving Money on Every Trade
"It is better to always lose less than you expect than more than you expect. That's saving money — it's like saving a penny. It will make you rich over the long term."
This is why position sizing and entry timing work together. Your position size is calculated from the reference price, but you're always trying to buy a discount below it. Every point better than your reference price is money saved on your risk.
Key Takeaways
- Box in every trade — know your profit target and stop loss before sizing
- Default risk-reward is 3.5:1 — deeper pullbacks improve this dramatically
- Max daily loss = 1% of account — divide by expected trade count
- Find your psychological breaking number — size below it, always
- Use the calculator — enter reference price, stop loss, and contracts to see exact dollar risk
- Pass the survival test — can you lose 10 in a row and still trade?
- Prefer more trades, smaller size — it smooths your P&L and protects your psychology
- Every point of discount is money saved — entry timing and sizing work together
Size Smart, Trade Funded
At DayTrader Funding, proper position sizing is the difference between keeping your funded account and losing it. Master your sizing, protect your capital, and let the probabilities work in your favor.