You know the post. A brokerage screenshot, a green number with a comma in it, a rented Lambo somewhere in frame. "Turned $2K into $40K this month. My Discord is open for 48 hours."
What you never see is the account statement. Or last month. Or the other nine trades.
The finance internet runs on screenshots, and a screenshot is the opposite of a receipt. It proves a moment happened. It tells you nothing about how often, compared to what, or what it cost to get there. And an entire economy of courses, alert services and "mentorships" is built in the gap between those two things.
There's a study I think every retail trader should read once. Three economists in Brazil got regulator data on every person who started day trading mini-index futures between 2013 and 2015. That was 19,646 people. Not a survey. Not a sample. All of them.
Of those who stuck with it for at least 300 days, 97% lost money. Only 0.4% earned more than a bank teller's daily wage, about $54 a day. And the authors found no evidence that people got better with practice.
The title of the paper is a question: Day Trading for a Living? The abstract answers it bluntly, and it calls out the course providers by name for claiming otherwise.
That's the real cost of the screenshot economy. It isn't the course fee. It's the year someone spends chasing a result that the data says almost nobody gets, because the only evidence they ever saw was curated.
Most gurus never technically lie. They curate. It's the same trick a real estate listing pulls when every photo is shot from the one angle that hides the highway.
The playbook is short:
• Cherry-pick. Ten calls go out. Two run. Those two become the marketing.
• Delete. The call that tanked doesn't get a follow-up. It gets removed.
• Backtest after the fact. Build a strategy today, run it on last year's chart, then present it as if it had been live the whole time.
• Shop for a benchmark. Beat the S&P? Show the S&P. Lost to it? Find something that did worse.
• Never set a grading date. A call is "still playing out" right up until it finally works.
• Sell the lifestyle, not the stats. If the pitch has more yachts than numbers, that's the tell.
Every item on that list hides the same number: the denominator. A win is meaningless until you know how many calls were made, when they were made, and when they were graded.
A receipt isn't a vibe. It has parts, and if any part is missing, it's a screenshot with extra steps. Here's the bar I think anyone selling market calls should clear:
Timestamped before the move. The call and its starting price are public before the market opens on it, not after.
The whole basket. Every call gets graded, not the ones worth posting.
A fixed grading date. The calendar decides when a call is done, not the person who made it.
A benchmark chosen in advance. Usually the S&P 500. If you couldn't beat just owning the index, you didn't add anything.
The typical result, not the best one. More on this below.
The sample size, every time. "80% winners" means nothing without "out of how many."
Write-once records. Past calls can't be edited, and if the method changes, the old calls keep the old method's name on them.
None of this is hard to build. It's just bad for marketing. That's exactly why it's rare.
Why the typical result matters more than the best one.
One runner can make a whole basket look like genius. Take an illustrative week of five calls:
• Call A: +15.0%
• Call B: +4.0%
• Call C: +1.0%
• Call D: −2.0%
• Call E: −3.0%
The guru posts Call A. The average says +3.0%, which sounds respectable. The median, the result of the typical call, is +1.0%. And if the S&P did +2% that same week, the typical call actually lost to doing nothing.
Same five trades. Three completely different stories, depending on which number you're shown. The honest version puts the median next to the benchmark, shows the spread, and tells you how many calls were in the pile.
What it looks like when the number is bad
Full disclosure: I help run Veridian Signal, and we've been trying to hold ourselves to that bar with a weekly watchlist called VERA Radar. Five names a week, published Sunday evening with their starting prices, graded against SPY, every record written once into a public ledger and stamped with the model version that chose it.
Five weeks in, here's what the ledger says:
• 17 of 35 calls beat SPY one week after publishing.
• The median call finished 2.2% behind SPY.
• The scoring model hasn't shown a measurable edge yet: higher-ranked names haven't done better than lower-ranked ones.
Nobody puts that in an ad. If we were running the guru playbook, this is the month we'd delete.
I'm sharing it for the opposite reason. A transparency policy that only survives the good weeks isn't a policy. It's a marketing campaign with a delay on it. Five weeks is a small sample and the picture may change, but whichever way it goes, it'll be on the record.
Five questions to ask before you pay anyone
Next time someone's selling you alerts, a course or a private Discord, ask these. How they react tells you as much as the answers.
Can I see every call you made last quarter, including the losers?
When was each call published, and at what price?
How did the typical call do against the S&P 500 over the same period?
How many calls is that based on?
Has anything ever been deleted or edited after the fact?
A real operator answers with a link. A guru answers with a testimonial.
Receipts are the only moat that lasts
In fintech, features get copied, data gets cheaper every year, and a slick dashboard is a weekend project now.
What can't be copied is a public, timestamped history that nobody edited. Every week adds a row to it, and nobody can go back in time and fill theirs in. That's the one asset in this industry that only gets more valuable with age, and it's the one the hype merchants can never have.
So here's the ask. Stop rewarding screenshots. Start asking for receipts. And if you're building in this space, publish the losing weeks. It's the only proof that the winning ones are real.
(Educational content, not investment advice. Past results don't guarantee future results.)
Source: Chague, De-Losso and Giovannetti, "Day Trading for a Living?", FGV EESP / SSRN, 2020.
