DRAG
The Essential Weapon for the Trading Millionaire's Journey

It's not about prediction. It's about response.
And response isn't intuition — it's math.

Crypto · Stocks · Derivatives — the markets differ, but the probabilistic thinking the survivors burned into instinct is the same.

Lose 10% → gain 10% = break even? No. 100 → 90 → 99. Recovery takes 11.1%. A 50% loss needs 100%. People enter the market blind to this asymmetry. That's why they disappear.

The math of Munger, Duke, and Dennis. Read it in a book and you'll know it all — until you sit in front of the chart and your hand reaches for the wrong button. Knowing it and having it burned into instinct are not the same thing.

Feel it yourself with the $10,000 simulator →

Press F2. See the logic. · $29 See the Concepts

Excel .xlsx · Instant download · Yours for life · No refunds (digital product)

Launch price $29 · Regular $39 · First 100 buyers only

Trading Simulator — 10 minutes, feel risk-reward
15 trades with $10,000. The SELL button shows your live P&L ↓
Best Balance $0
Best R:R —
Best Win Rate —
Attempts 0
1 / 15 TECHCO $10,000
PRICE $50.00
STATUS Ready
VOLUME
This is risk-reward. Let winners run, cut losers short — the Turtles in one line. The same math works for hiring, startups, options, and insurance. Work it out by hand once and it's yours for life — below ↓
Backed by 225 studies
10 sheets
500+ live formulas
0 hard-coded values
WHY THIS WORKBOOK

The weapon millionaire traders all share —
probabilistic thinking.

Buffett, Munger, Dennis, Annie Duke, Simons — different markets, different eras, yet they all stressed the same thing. Risk-reward, expected value, variance, Kelly, Bayesian. Not known in the head — burned into instinct. Read it in a book and you'll know it all. Sit down in front of the chart and your hand reaches for the wrong button. Closing that gap is what this workbook is for.

No chart patterns. No stock picks. No trade signals. Just the *mathematical backbone* of the ones who survived.

WHAT'S INSIDE

1 Excel file · 10 sheets · Launch price $29

Only the math the survivors burned into instinct. Trace the cells with F2 and it becomes intuition.

SHEET 0 10 min

Guide

F2 key, cell references, learning paths. Your starting point.

SHEET 1 25 min

Drawdown Asymmetry

A 10% loss needs an 11.1% gain. 50% = 100%. 90% = 900%. Where risk-reward begins.

SHEET 2 30 min

Expected Value

EV = probability × value. The start of every decision. Decision trees in cells.

SHEET 3 35 min

Risk-Reward Ratio

1:3 R:R → EV+ even at a 25% win rate. The rule that made 17 Turtles millionaires.

SHEET 4 35 min

ATR & Volatility

Volatility = stop distance. 14-day average true range (ATR), 2N stops. The Turtles' N.

SHEET 5 30 min

1% Rule · Position Sizing

Position size = (account × 1%) ÷ stop width. Less of the volatile, more of the calm. Turtle money management.

SHEET 6 45 min

Variance & 100-Trade Sim

Even EV+ has 5–10 losses in a row — normal. Feel variance with a 100-trade sim. Separate luck from skill.

SHEET 7 35 min

Kelly Sizing

f* = (p×b − q) / b. Optimal bet size. The moderation of Half-Kelly. The *theoretical ceiling* of the 1% Rule.

SHEET 8 40 min

Bayesian Update

Prior × likelihood = posterior. Update decisions with new signals. Done in 30 seconds.

SHEET 9 25 min

Inversion · Pre-mortem

Start with the failure scenario. Munger: "Invert, always invert." Sum the success EV and the failure EV.

Trace the cells with F2.

Don't memorize formulas. See them in cells.

HOW IT WORKS

Two keys. That's all.

Don't memorize. Touch it.

esc
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
CLOSE
Back to the result
OPEN
See how it's calculated

Press F2 to look inside.   Press ESC to come back.

Repeat as much as you want — nothing changes.

BEFORE F2
Just a number.
C
D (probability)
9
Favorable outcomes
9
10
Unknown outcomes
47
11
Hit rate, 1 try
19.1%
…
…
…
15
Hit rate, 2nd try
19.6%
17
Within 2 tries →
34.97%

9 favorable outcomes, 47 unknowns. Probability of at least one hit within 2 tries = 34.97%

You can see the result.
But where does 34.97% come from?

AFTER F2
The calculation unfolds.
C
D (probability)
9
Favorable outcomes
9
10
Unknown outcomes
47
11
Hit rate, 1 try
19.1%
…
…
…
15
Hit rate, 2nd try
19.6%
17
Within 2 tries →
=1-(1-D11)*(1-D15)
= 1 − (1 − 0.191) × (1 − 0.196)
= 1 − (0.809 × 0.804)
= 1 − 0.6504
= 0.3496 (≈ 34.97%)
Quick estimate: favorable × 4 ≈ 36% → estimate confirmed ✓

The complement of "missing both times." Not a formula to memorize — you see why the quick estimate works, right there in the cells.

REMEMBER
  • F2 only looks inside. It changes nothing. Press it any time, safely.
  • ESC always brings you back. There's nothing to lose.
  • Yellow cells are yours to change. The chart reacts instantly.
WHERE COURSES STOP

Five questions books throw away in one line

We work them out in cells.

Q1

"Lose 10%, gain 10% — back to even?"

Most people invest believing this. That's why most people fail.

1 Excel file
INTRO INVESTING BOOK

"7% average, up and to the right." That's it.

→ Never covers asymmetry. Most assume -10% → +10% is break-even.

TRADINGMATH'S ANSWER

100 → 90 → 99. Not break-even. You need 11.1%. -50% needs +100%. -90% needs +900%.

This asymmetry is where risk-reward begins.

1_Drawdown Asymmetry: the recovery rate needed for each scenario from -5% to -90%, worked out in cells.

Q2

"Let winners run, cut losers short — why?"

The core rule of Turtle Trading. Every book throws it out in one line and moves on.

1 Excel file
MOST COURSES

"Cut losses short, let winners run." That's it.

→ Why 1:2? What about 1:3? No answer.

TRADINGMATH'S ANSWER

Win rate needed = loss / (loss + gain). At 1:3, even a 25% win rate is EV+. The rule that made 17 Turtles millionaires.

3_Risk-Reward Ratio: an R:R × win-rate matrix plus an automatic read on your own track record.

Q3

"How do I revise a decision when new information arrives?"

You've heard the words "Bayes' theorem" — but how do you actually use it by hand in trading, interviews, or diagnosis?

1 Excel file
MOST COURSES

"P(A|B) = P(B|A) × P(A) / P(B)"
"Think like a Bayesian."

→ But how, in one second, in real life? No answer.

TRADINGMATH'S ANSWER

Prior: "60% up / 40% down." Estimate how likely the new signal is under each scenario. Multiply, normalize. Five cells of fractions, 30 seconds.

8_Bayesian Update: market signals, interview evaluation, medical diagnosis — all in one sheet.

Q4

"Same average return, different outcomes — why?"

Same average, different *order* — different result. The real meaning of variance.

1 Excel file
MOST BOOKS

"7% average, 30 years → 8×."

→ *When* the 7% happens can double or halve the result. Never covered.

TRADINGMATH'S ANSWER

A: +20% in the first 10 years. B: -10% in the first 10 years. Same average, but A ends at $800K, B at $250K. Timing of withdrawals changes everything.

6_Variance & 100-Trade Sim: same average × different order → a 100-scenario simulation.

Q5

"Inversion — the thing Munger always talks about?"

"Invert, always invert." Often quoted — but how do you actually use it *mathematically*?

1 Excel file
MOST SELF-HELP

"The opposite of success."

→ But how, in cells? No answer.

TRADINGMATH'S ANSWER

Split into two sheets. Left: the success EV+. Right: the failure EV-.

Look only at the left and it all looks good. Add both and most decisions are EV-. Munger's real tool.

9_Inversion: a pre-mortem template. Sum the EV of the failure paths.

Which question stumped you most? Here's the sheet map.

SHEETS 1–5 + 9
A single decision

Drawdown · EV · Risk-Reward · ATR · 1% Rule · Inversion
Q1, Q2, Q5

SHEETS 6–8
A hundred decisions

Variance · Kelly · Bayesian
Q3, Q4

Who should NOT buy this

Honest, so you don't waste your time.

  • Quants (already fluent in backtesting, Kelly, Sharpe)
  • Data scientists who handle Bayes and EV in code
  • Anyone looking to learn chart patterns or technical analysis
  • Anyone who prefers video courses
  • Anyone without access to desktop Excel

Frequently Asked Questions

I'm completely new to trading or investing — can I follow this?
Yes, you can. The first sheet (0_Guide) lays out EV, risk-reward, and the two interpretations of probability on a single page. It doesn't cover market analysis or technical indicators — it's a file for burning into your hands a way of evaluating one decision, and a hundred decisions, with math. You can start with zero trading experience.
Do I need to be good with Excel?
No. If you can type =A1+B1, you're fine. The 0_Guide sheet walks you through basic arithmetic, cell references (relative/absolute), and how to trace a formula with the F2 key. There are barely any functions — every step is worked out cell by cell.
How long does it take?
Three paths. A (30 min): one EV sheet to check whether it's for you. B (2 hours): the core five — Drawdown, EV, Risk-Reward, ATR, 1% Rule. C (5 hours): the full path including Variance, Kelly, Bayesian, and Inversion. All three are mapped in 0_Guide.
How much math do I need to know?
Basic arithmetic, fractions, and percentages are enough. You don't need to memorize formulas like Bayes' theorem or the Kelly criterion — that's exactly what this file works out in cells for you. Not formula → memorize → forget, but formula → broken into cells → burned into intuition.
How is this different from just reading a trading book?
A book gives you only the conclusion: "Use 1:2 risk-reward." TradingMath breaks it down in cells — why 1:2? What about 1:3? What does a 100-trade simulation show?
Is this only useful for trading?
No. The same math works for hiring, negotiation, starting a business, insurance, options, and career moves. Munger's latticework — one tool that works across many fields. Each sheet ends with a real-world example.
Does it work in Google Sheets?
Most formulas work. But the core learning experience — tracing formulas with the F2 key — works best in desktop Excel (2016 or later). Mobile Excel and LibreOffice work partially, but desktop Excel is recommended.
How do I receive the file after purchase?
A download link is emailed to you right after payment. You get the Excel file plus a PDF guide (decision checklist, risk-reward matrix, learning-path overview). Payment is by card through Lemon Squeezy.
Do I get updates?
Yes. The latest version is automatically posted to your Lemon Squeezy account. Free lifetime updates — whether sheets are improved or new examples are added, buyers always have the latest version.
Can I get a refund?
Because this is a digital product, refunds are not offered after download. Please review the sheet structure and content above carefully before deciding to purchase.
LAUNCH OFFER · FIRST 100 BUYERS ONLY

One file. Launch price $29. Done.

10 sheets of the math the survivors burned into instinct.

EXCEL FILE · .xlsx

The Essential Weapon for the Trading Millionaire's Journey

Drawdown · EV · Risk-Reward · Variance · Kelly · Bayesian · Inversion

WHAT STAYS IN YOUR HANDS
  • → Loss asymmetry in cells (10% → 11.1%)
  • → EV calculated in 30 seconds
  • → Win rate needed, instantly, from R:R
  • → 100-trade variance simulation
  • → Optimal bet size with Kelly
  • → Updating signals with Bayes
  • → Failure scenarios first, with Inversion
Regular $39
$29

Launch price · First 100 buyers · One payment · Yours for life

Press F2. See the logic. — $29

Lemon Squeezy · Instant download · .xlsx

Because this is a digital product, refunds are not offered. Please review the content and sheet structure above carefully before purchasing.

Burn probabilistic intuition into instinct.

Basic arithmetic is enough. 10 sheets · Launch price $29 · Yours for life.

Press F2. See the logic. — $29 See the sheets

Yours for life · Free updates · Instant download · No refunds (digital product)