A fixed monthly return, promised in advance
Real trading in futures markets never produces a predictable monthly percentage. A guaranteed fixed yield, paid every month, is the single clearest marker of a Ponzi-type structure.
English — international investor alert
Marcelo Yudrin Goudard Koeb da Silva: what international investors should know
Marcelo Goudard is a Brazilian national now based in the United Arab Emirates. Investors in Brazil state that they handed over funds for day-trading operations under a promise of a fixed monthly return and never received their capital back. Since his relocation to Dubai, similar approaches have been reported by people outside Brazil — which is why this summary is published in English.
Summary
The short version
A group of investors in the Brazilian state of Paraná report having transferred capital to Marcelo Yudrin Goudard Koeb da Silva for day trading in index and currency futures, under a promise of a fixed monthly return. According to their accounts, performance reports were fabricated, no brokerage notes were ever issued in their names, and the capital was never returned.
Those accounts are the basis of 8 civil enforcement actions and 2 police investigations currently under way in Brazil, all publicly searchable. There is no criminal conviction, and the presumption of innocence applies in full.
After relocating to the United Arab Emirates, he resumed an active public presence online and, per investor reports, began approaching people internationally. This page exists so that anyone approached — anywhere in the world — can read the same verifiable information available in Portuguese.
Legal notice
This page gathers accounts from investors who state they suffered losses, together with information from public Brazilian court proceedings. There is no final criminal conviction to date, and the presumption of innocence applies in full (Article 5, LVII of the Brazilian Federal Constitution). A right of reply is guaranteed: any statement from the person named will be published here upon request.
How the reported scheme works
Five stages described by investors
The sequence below reflects what affected investors describe in sworn statements and in the documents filed in the Brazilian proceedings.
- 01
Professional credibility is manufactured
The operator presents himself as a licensed markets professional, day trading index and currency futures through a well-known broker. The licence is never verified by the investor, and the reputable broker's name is used only to lend credibility to an operation that never passes through it.
- 02
Early payments buy trust
The first withdrawals are paid on time and above market. That money does not come from trading results — it comes from the investor's own capital, or from later investors. Its only function is to trigger a second, larger deposit.
- 03
Fabricated performance reports keep the error alive
Weekly performance screens show a balance that only rises and no losing trades. In the cases already examined in Brazil, the operator admitted producing those screens himself.
- 04
Payments stop, with a technical excuse
As withdrawal requests accumulate, payments halt: a liquidity problem, a robot that allocated everything into futures contracts, a maturity date to wait for. The excuse is always technical and always unverifiable.
- 05
The statements turn out to be empty
In the end the brokerage and bank statements are at zero. Investors report that capital was used to pay other groups and for personal expenses.
Warning signs
Eight red flags, wherever you are based
These signs are jurisdiction-independent. If an offer you received matches several of them, stop before transferring anything.
Profit shown only through screenshots
Screenshots of daily profit, 100% winning trades and a balance that only grows prove nothing. They are trivially fabricated and are the central instrument of this kind of scheme.
No brokerage note issued in your own name
Every genuine trade produces a brokerage note issued by a regulated broker in the account holder's name. If the money is yours, the document must carry your tax ID.
Funds sent to a personal account, not a broker
Money transferred to a personal or third-party bank account, a crypto wallet or an instant-payment key is not an investment. At best it is an unsecured loan.
Withdrawal conditioned on a new deposit
If getting your own money back requires paying a "tax", a "repatriation fee" or an "advance" from abroad, the operation has no liquidity. A new payment never recovers the previous one.
An unauditable "robot" or algorithm
An expert advisor or algorithm that allegedly locked all capital into futures contracts, managed by a technician who is never available to speak with investors, is an excuse, not an explanation.
Credentials you never independently verified
Claiming to be licensed by a securities regulator costs nothing. Checking is free and takes a minute — with the CVM in Brazil, the SCA or DFSA in the UAE, or your own local regulator.
The whole relationship lives in a messaging app
No prospectus, no registered contract, no regulated custodian — only voice notes, chats and informal meetings.
Never send additional funds to "unlock" a withdrawal.
If recovering money you already transferred depends on a new payment — a tax, a repatriation fee, an advance from abroad — the operation has no liquidity. A further transfer does not recover the first one; it only increases the loss.
Public proceedings in Brazil
Case numbers you can verify yourself
All numbers below follow the Brazilian unified case-numbering standard and can be searched free of charge on the public portal of the Court of Justice of Paraná (TJPR).
Civil enforcement actions (8)
- 0008633-47.2021.8.16.0194
- 0023690-63.2025.8.16.0001
- 760023155-37.2025.8.16.0001
- 760023692-33.2025.8.16.0001
- 0011501-56.2025.8.16.0194
- 0023781-56.2025.8.16.0001
- 760011503-26.2025.8.16.0194
- 0023783-26.2025.8.16.0001
Police investigations (2)
- 0010605-07.2025.8.16.0196
- 0001132-60.2026.8.16.0196
Investigations are fact-finding procedures. They do not establish guilt and do not constitute a conviction.
Identification
Public profiles used to confirm identity
These public pages are listed so that anyone approached internationally can confirm whether the person contacting them is the same individual described here.
FAQ
Frequently asked questions
Short answers for international readers searching this name.
Who is Marcelo Yudrin Goudard Koeb da Silva?
Marcelo Yudrin Goudard Koeb da Silva, publicly known as Marcelo Goudard, is a Brazilian national to whom the investor accounts gathered on this site refer. Investors in the state of Paraná, Brazil, state that they handed over funds for day-trading operations in index and currency futures under a promise of a fixed monthly return, and did not receive their capital back. He is a party to civil enforcement proceedings and appears in police investigations, all publicly searchable. There is no criminal conviction.
Where is Marcelo Goudard now?
According to information gathered by the group of affected investors and to his own public posts, Marcelo Goudard now lives in the United Arab Emirates, in the Dubai area. Living abroad does not suspend or interrupt the civil enforcement actions and police investigations under way in Brazil.
Why is this page in English?
Since relocating to the UAE, Marcelo Goudard has been operating internationally, and investors outside Brazil have reported similar approaches. This page exists so that non-Portuguese speakers who are approached, or who are searching his name, can read the same publicly verifiable information available to Brazilian investors.
I am outside Brazil and I think I was affected. What should I do?
Stop sending further funds immediately. Preserve every transfer receipt, contract, screenshot and full chat history. Report the matter to your local police and financial regulator, and identify yourself through the form on this site so you can be connected to the group of investors already represented before the Brazilian courts. Cross-border cooperation is possible and is strengthened by the number of documented victims.
Does this site accuse him of a crime?
No. This site describes the mechanics of the scheme as reported by investors, publishes their accounts, and lists public proceedings under way. No conviction is asserted and the presumption of innocence is fully respected.
How can I verify the court cases myself?
All case numbers listed here can be searched free of charge on the public portal of the Court of Justice of the State of Paraná (TJPR), in Brazil. Case numbers follow the Brazilian unified numbering standard.
Were you approached, in Brazil or abroad?
Come forward. The report form is in Portuguese, but you may write your message in English — it is read by the group and by the lawyers representing the affected investors before the Brazilian courts.