Is a Certain Trading Coach Legit?
A trading coach is checkable, and the check is not whether their results look good. It is whether a complete record exists, whether the losing months are in it, and whether the winners were timestamped before the fact. Six questions settle most cases in under ten minutes.
Why do good results prove so little?
Because you are shown a selection, and the selection was made by the person being evaluated. Take a trader with no edge at all — a 50% win rate at 1:1, expectancy exactly zero. Over 200 trades they produce roughly 100 winners. Posting the best 12 of those 100 is not dishonest arithmetic; it is a true statement about 6% of their trading, presented where the other 94% used to be.
This is why "their screenshots look real" is not a defence. The screenshots usually are real. Authenticity and representativeness are different properties, and only the second one tells you anything about what happens to your money.
The six checks
1. Is the record continuous?
A record covering 14 consecutive months is evidence. Fourteen months of highlights is a scrapbook. Look for an unbroken series with the bad stretches still in it — if February is missing from a year of monthly numbers, February is the month you needed.
2. Are the losers published?
At a 55% win rate, 45 of every 100 trades lose. A record showing 6 losses in 100 is not a good trader, it is an incomplete record. The ratio of published losers to published winners is the cheapest integrity test there is, and it takes about thirty seconds.
3. Were the calls timestamped before the fact?
This is the one that actually decides it. Anything written after the market answered is a description, not a prediction, and no amount of detail changes that. A call posted publicly at 10:31 and resolved at 14:05 is evidence. The same call written up at 16:00 is a story about the day, however accurate.
4. Is the sample big enough to mean anything?
Thirty trades cannot establish an edge. At a true 55% win rate, the 95% confidence interval across 30 trades runs from roughly 37.2% to 72.8% — a range that comfortably contains a coin flip. A coach presenting a 70% win rate over 30 trades has shown you noise with a number on it.
5. Does the fee get stated plainly?
Not because a high price is a red flag, but because a hidden one is. Compute the hurdle before you agree: a $250 monthly fee is $3,000 a year, which on a $20,000 account is 15.0% you must earn before you are level. That is a real number, and it belongs in the decision rather than after it.
6. What happens when you ask?
Ask for the losing months and see what comes back. A coach who trades will find the question ordinary. The response to an evidence question is itself evidence.
What does a coach with nothing to hide look like?
They have a continuous record they did not assemble for you, containing losses they did not curate, made up of positions recorded before the fact. That artifact is not exotic and it is not expensive to produce; it simply cannot be produced retroactively, which is the entire reason it is worth anything.
Investment scams were the largest reported fraud category in the United States in 2024, at $5.7bn.[1] The profession already has a standard for presenting performance — the CFA Institute's GIPS standards, built on fair representation and full disclosure across every portfolio in a composite rather than the selected ones.[2] A coach is not required to meet it. Knowing it exists tells you what a complete answer would look like.
You are shown what is left, not what there was. That is survivorship bias: the failures never enter the count. Brown and colleagues measured it on funds in 1992 — count only the ones still running and the average looks like skill.[3] The pool a coach is drawn from is thin, too. Of Taiwanese day traders followed from 1992 to 2006, under 1% predictably earned positive abnormal returns net of fees.[4]
kappi is a trade recorder: you commit a trade before the fact, it is sealed on your device for a time-capsuled delay you choose, then kappi publishes it on a Merkle-anchored log. The record is yours to share, with whoever you choose. $15/month, no free tier.
Sources
- FTC Consumer Sentinel Network Data Book 2024 (published March 2025) — $12.5bn reported fraud losses, investment scams the largest category at $5.7bn read 2026-08-16
- CFA Institute, Global Investment Performance Standards (GIPS) for Firms, 2020 edition read 2026-08-16
- Brown, Goetzmann, Ibbotson & Ross, 'Survivorship Bias in Performance Studies', Review of Financial Studies 5(4), 1992, 553–580 read 2026-08-16
- Barber, Lee, Liu & Odean, 'Do Day Traders Rationally Learn About Their Ability?' — of Taiwanese day traders 1992–2006, under 1% predictably earned positive abnormal returns net of fees read 2026-08-16
Frequently asked questions
Are trading coaches a scam?
Not as a category — plenty teach real skills and are worth their fee. What is checkable is the evidence behind the claims, and the checks are the same whoever is making them: is the record continuous, are the losers in it, were the calls timestamped before the fact.
How many trades does a coach need to show?
More than most show. At a true 55% win rate, 30 trades give a 95% interval of roughly 37.2% to 72.8%, which includes a coin flip. Judgements about an edge need hundreds of trades, not dozens.
Is a verified broker statement enough?
It proves trades happened and it cannot prove intent. A statement is reconstructed after the fact from data the account holder controls, so it cannot show what was planned before the position resolved.
What if a coach refuses to show losing months?
Treat the refusal as the answer. At any realistic win rate, losses are the majority of a complete record's line items, so a record without them is incomplete by construction.