I began investing in 2005 while still in medical school. In 2007, I started trading on the Brazilian stock exchange. 

By 2008, I was investing in the forex market using automated robots. For many years, I saw good returns with my stock portfolio in Brazil. 

Through day and swing trading with robots in forex, I had excellent years and others not so much; my results were unstable, though I tended to win more than lose. 

In 2020, I started investing in cryptocurrencies with robots, and in 6 months, I turned $32,000 into over $1 million. I stopped trading and exited this market upon identifying the end of that bull market cycle. 

Also in 2020, I began to study macroeconomics in depth, which became part of my analysis process, using fundamentals in my analysis as well and keeping up with new technologies. This is how I identified opportunities in cryptocurrencies, recognizing a time when the macroeconomic scenario was favorable, blockchain was an emerging technology, and then I developed a portfolio strategy that had an edge in selecting cryptocurrencies. 

Nowadays, my strategy is focused on long/short in the US stock market, aiming to buy (long) the best stocks (usually large tech stocks with high growth potential, solid business moat, but also some excellent defensive stocks) or ETFs of the best sectors and sell (short) ETFs that have poor strategies and/or prospects.

Investor

Marcello Vieira - Investidor de Sucesso

I founded 'Successful Investor' while working full time as a doctor back in 2012, teaching people how to invest more effectively.

The strategies have evolved over time, but I only teach what I do with my own money.

We now have over 15,000 students learning about investments in crypto and stocks with the goal of achieving financial freedom.

Founder

Medical Doctor

The All-Weather Investor | Building a $5M portfolio—$1M already achieved | Sharing everything I learn along the way

Strategic stock investing for Wealth Managers and Family Offices.

Wealth preservation is essential. 

But true financial stewardship requires strategic growth—built on conviction, discipline, and risk management.

Many wealth managers and family offices struggle to find stock investment strategies that deliver superior returns without unnecessary complexity. Our approach bridges that gap.

I’m Marcello, a former doctor turned full-time investor with two decades of experience in stock and crypto markets. 

Since 2016, I have worked with wealth managers, family offices, and high-net-worth individuals to implement investment strategies that maximize performance while protecting capital.

In 2020 and 2021, my momentum-based approach transformed $32,000 into over $1 million. 

Today, we refine and apply that strategy for professionals seeking an edge in the markets.

What we offer: 

↳ Institutional-grade stock strategies designed for long-term performance
↳ Risk-managed investment frameworks to navigate uncertainty with confidence
↳ Tailored solutions for wealth managers and family offices seeking scalable, high-conviction strategies

If you're looking to strengthen your portfolio strategy with a proven, data-driven approach, email me at marcello@mdvinternational.com

Marcello Duarte Vieira

SCIB

Owner

Archuleta Law Firm

Archuleta Law Firm provides skilled representation to individuals and families who have suffered damages due to Military (Army, Navy, Air Force) Medical Malpractice and Veterans Administration (VA) Medical Malpractice. Typically, these claims fall under what is called the Federal Tort Claims Act (FTCA).

Our results are record-setting. We have achieved three of the largest judgments and three of the largest settlements in the 70+ year history of the Federal Tort Claims Act (FTCA).

Attorney

Pro Se

Archuleta Partners PLLC

Archuleta Partners focuses on privacy law and business matters. We represent companies in various sectors and help them develop and implement privacy programs and systems. We also guide strategic contract negotiations and deliver reliable counsel relative to intellectual property, risk mitigation strategies, and various commercial and corporate agreements.

LitLingo

LitLingo helps businesses communicate better. Our AI proactively identifies problematic language in employee communications in real-time by flagging risky or non-compliant language before the message is sent. While you are busy writing, our algorithms are working hard behind the scenes to recalibrate any mishaps in your messaging and help you avoid risky conversations altogether. LitLingo integrates with all of the enterprise communication channels your company is already using (e.g., Gmail, Outlook, Slack, Microsoft Teams, and Zendesk), providing real-time feedback to end-users, ensuring messages are in compliance, and your assets are protected. For more information, you can find us at www.litlingo.com.

General Counsel

The Marilynn Smith

Co-Founder & General Counsel

Canada Lewis & Associates PLLC

Of Counsel

Archuleta Group

Advice Local

Established and navigated all legal policies, leveraging expertise to streamline and transform divergent organizational functions. Handled all legal aspects of the company including employment, intellectual property, licensing, contract, and data privacy matters.

• Drafted and negotiated million-dollar SaaS, vendor, development, and client commercial agreements.

• Strategic member of corporate leadership team, proactively counseling senior leadership on integral legal and business concerns with a focus on risk mitigation strategies.

• Diligently resolved complex case involving copyright, trade secret, and non-disclosure agreement breach, ultimately capturing large settlement.

• Took initiative by revitalizing entire sales process through drafting and implementation of company-wide master service agreement. 

• Created and executed all company legal processes and policies.

• Handled and resolved cooperative investigation with the FTC on robot calling enforcement action.

• Supported 2 multi-million dollar financing rounds with a private equity group, involving negotiating and drafting purchase agreements, company agreements, and managed all due diligence. 

• Fostered high-performing Colombian team, slashing development and fulfillment costs by more than 50% and 40% respectively.

General Counsel and Chief Development Officer

Scanther

Applied robust business and technical acumen in efficiently launching company from bottom-up, orchestrating all mobile application development activities, owning all core legal functionalities, and seamlessly finalizing sale to Advice Interactive Group. 

• Filed three utility patents and two trademark applications.

• Drafted and negotiated all commercial agreements including SaaS agreements, asset purchase agreements, terms of service, and member transfer agreements.

• Conceptualized and built innovative products, receiving national attention and appearing on CNBC’s Mad Money.

I’m an attorney and former General Counsel specializing in FTCA cases, personal injury, and medical malpractice. I advocate for veterans, service members, and their families worldwide in claims against the U.S. government.  

Beyond the courtroom, I help businesses protect their assets through Shoal Creek Insurance Brokers (SCIB), providing attorney backed commercial, professional liability, and cyber insurance solutions to mitigate risk and ensure financial security.  

With 15+ years of legal experience and millions in client recoveries, I deliver strategic counsel and relentless advocacy to safeguard my clients’ interests. Let’s connect.

taplio

The Battle

Marcello Duarte Vieira

EJ Archuleta

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