Sizing — Math the Year, Then Math the Day

The annual math (operator, January 2025)

This is what the operator wrote down for himself going into 2025:

That's a real plan. Specific risk per trade, specific target per trade, specific hit rate, specific number of trading days, specific net P&L expectation. The math closes. If you can't write this for yourself, you don't have a sizing model — you're trading by feel.

The general form:

Annual P&L = (Target_per_trade × Hit_rate × Trading_days)
           − (Risk_per_trade × Loss_rate × Trading_days)
           − Commissions

         where Hit_rate + Loss_rate = 1.0
         and  Target_per_trade / Risk_per_trade = R_multiple

The operator's math at 50% hit rate × 2.5R reward/risk × 250 days × $500 risk = $93,750 net. Run the same equation with YOUR numbers. If your honest hit rate is 40%, your R-multiple needs to be ≥1.5R for breakeven. If your R-multiple is 2R but you're at 35% hit rate, you're losing money. The math doesn't lie.

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Rule 1 — The 3-tier discrete sizing model (1x / 2x / 3x)

Discrete, not continuous

Most sizing models talk about continuous Kelly fractions. Operator's lived sizing is 3-tier discrete:

Setup grade	Sizing	Frequency
F / C-grade / mediocre	0 (don't take it)	~30% of considered setups
B-grade or below	1x base size	~50% of taken trades
B+ to A-grade	2x base size	~30% of taken trades
A+ (every layer firing, structural alignment, cross-asset confirmation)	3x base size	~10% of taken trades

The principle: the discrete tiers force you to grade the setup before sizing. Continuous sizing tempts you to "size 1.5x because I kinda like this." Discrete forces "B or A+? Pick one." Most days, the answer is B → base size. That's the discipline.

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Rule 2 — Risk-per-trade scales to current drawdown buffer

The mistake that costs the most

This is the rule operator codified for himself after a 2026-03 drawdown:

The rule: per-trade risk = ~10% of current drawdown buffer. As buffer shrinks, risk shrinks proportionally.

Buffer remaining	Risk per trade	Daily risk cap (3 shots)
$2,000 (full)	$200	$600
$1,500 (75%)	$150	$450
$1,000 (50%)	$100	$300
$500 (25%)	$50	$150
$200 (10%)	$20	$60 — survival mode

Why this works: trading drawdowns are non-stationary. When you're losing, the market is in a regime your edge isn't matched to (or you're in a tilt regime where your decision-making is degraded). Either way, smaller bets while in drawdown protect against the spiral that turns -50% drawdown into account-zero.

Most retail traders do the OPPOSITE — they size UP on losing days to "get back to even faster." That's the path to zero. Size scales DOWN on losing days, UP on winning days. Never flat.

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Rule 3 — 3 shots a day max (TradeNet 2018, still true)

The hardest cap

From the About page: in 2018 the operator got 1-on-1 coaching at TradeNet in NYC after running a $14k account up to $31k in two weeks. They told him to take 3 shots a day max. He didn't listen. Blew up the account. That lesson cost ~$31k. The lesson is still the rule.

• 3 trades a day max, regardless of outcome (win or lose, the count includes both).
• Daily risk cap = 3 × per-trade risk. No exceptions. Hit the cap, day done.
• Most account-killing days happen because losses 1-3 lead to revenge trades 4, 5, 6. The cap prevents the spiral mathematically.

The math: at $100/trade × 3 trades = $300 daily max loss. Even at 100% loss days for a week, that's $1,500 — recoverable in 6 winning days at average R. Without the cap, a single bad day can be $1,500 by itself.

See Module 7 — The Spiral for the full anti-spiral protocol; this rule is the mathematical floor.

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Rule 4 — Add WITHIN risk, not past it

Scaling up correctly

From Module 2:

Within risk: you're up $300 on the day. You add a contract on a continuation entry with a $200 stop. Worst case you give back $200 of profit and finish +$100. The market paid for the size increase, not your account.

Past risk: you're up $300. You add 3 contracts with a $400 stop because "the move looks strong." Worst case you give back $400 — now down $100. The single add just turned a profitable day into a losing day.

The rule: let the market pay for size increases, not your account. If you're up real money on the day, you have permission to size up within those proceeds. If you're flat or down, base size only.

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Rule 5 — Size BY instrument noise, not BY R-target ambition

From Module 2's wide-stop philosophy

Module 2 covers this in stop terms; here's the sizing implication:

If ES is moving 10 points bar-to-bar in normal noise, your stop has to respect that — say, 8 points. With a $500 risk-per-trade target, that's 500 / (8 × $50/pt) = ~1.25 contracts on full ES, or 12-13 contracts on MES. Don't force a 5-point stop just to size into 2x ES contracts; you'll get noised out before the move develops.

• Wide stop + smaller size = same dollar risk, fewer noise stop-outs
• Tight stop + larger size = same dollar risk, more noise stop-outs

The math is identical at entry; the outcomes diverge over time. Wide stop wins because noise events are common; structural moves are rare; surviving the noise to participate in the move is the edge.

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Rule 6 — Multi-account copier sizing (for funded traders)

5-account math, simplified

Operator runs a trade copier from a master TradingView account to 5 funded TopStep accounts simultaneously, plus a personal account.

Sizing math for the copier setup:

• Per-account risk: ~10% of that account's drawdown buffer (Rule 2)
• Total trade risk: per-account × number of copied accounts
• Why this works: each funded account has independent drawdown — losing on one doesn't kill the others. The risk multiplies but so does the upside.
• The pain point: when the copier service drops, you have to manage 5 accounts manually. The bot can route trade signals to all accounts simultaneously without copier dependency.

For non-copier traders: ignore Rule 6, use Rule 2 single-account math.

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Rule 7 — Two-stage trader career: small-account grind vs scaled-account exploit

The profit-factor philosophy

Operator's 2025-08 evolution on R-targets:

Stage 1 — Small-account grind. 1-2R trades, high frequency, base size. The math is volume × small edge × discipline. Casinos make money this way. Most traders should too while their account is small.

Stage 2 — Scaled-account exploit. Once the account is large enough that 1R = real money, you can selectively size up for A+ setups and target 5-10R captures. The operator's CL +4R was a Stage-2 trade — 2 contracts × $4,050 R-captured = $8,100 day.

Don't try to skip stages. A small account aiming for 10R captures gets crushed by the inevitable 0R / -1R variance. Profit factor matters more than R-multiple at every stage.

The full sizing checklist (use before every trade)

1. Setup grade: what tier is this — base, B, A+? Discrete, not continuous.
2. Risk-per-trade: ~10% of current drawdown buffer. Adjust if buffer is below half.
3. Daily-risk check: already lost 1-2 trades today? After 2, mandatory pause regardless of buffer.
4. Stop distance vs noise: stop ≥ 50% of recent ATR? If less, size down OR pass.
5. Add-discipline: if planning multi-leg entry, total worst-case is within today's accumulated profit?
6. Multi-account math (if applicable): per-account risk × N copies = total trade risk. Sane?
7. Profit-factor frame: small account = 1-2R targets. Scaled account = selective A+ for 5-10R.

What to do tomorrow

Tonight: write your annual P&L equation. Risk per trade. Target per trade. Honest hit rate (look at last 30 days). Trading days you'll actually trade (subtract weekends + market holidays). Multiply it out. Does the equation produce a number you can live on? If yes, that's your plan. If no, adjust risk per trade or hit rate or trading days until it does — and then trade THAT plan.

Tomorrow: take 1-3 trades max. Base size unless A+. Stop distance respects instrument noise. Per-trade risk respects your current drawdown buffer. Hit the daily cap, you're done. Rinse, repeat.

Across 250 trading days, the math compounds. The discipline IS the edge.

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Up next in the curriculum

• M6 — Session Discipline. When to trade. The 3-5pm PT dead zone. Asia open. Sweet spots and how to schedule around them.
• M7 — The Spiral. Recognizing and stopping the 1-loss → forced re-entry → 2nd loss pattern.
• M8 — Override Capture. The recursive learning loop.

Browse the full curriculum →

For funded-account traders specifically

The 3-tier sizing model + 3-shots-a-day cap + drawdown-aware tier reduction in this module is the direct counter to Trap 3 in funded futures — sizing buying-power instead of sizing trailing-drawdown headroom. Two free companion pieces:

• Why most funded futures traders fail — the three traps — Topstep's own ~5.6% eval-to-payout math + how Trap 3 (sizing without a plan) compounds the trailing-drawdown floor against you.
• Funded-account checklists — pre-session briefing + pre-trade check + post-session scorecard — operational templates that operationalize this module's sizing rules at the account-state level.

Risk disclosure. Trading futures involves substantial risk of loss. Most retail traders lose money. The sizing methodology described here reflects the operator's actual trading methodology over 9 years. Past performance is not indicative of future results. Operator does not manage customer accounts. Nothing in this module is investment advice or a solicitation. Customers trade their own accounts under their own decisions.