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

Successful investing for superior returns focuses more on letting winners run and cutting losses quickly than on always predicting what will succeed, provided you're decent at spotting opportunities.

Fund Manager | Specialized Momentum & Risk-Hedged Solutions for Family Offices & Advisors | 20+ Years of Market Experience

I love stocks with strong fundamentals, but I love them even more when there's a long-term tailwind pushing them forward.

AI is speeding up the markets, making trends shorter and more volatile with sharper swings. More than ever, you need to move quickly and not always hold out for a pullback before jumping into a new trade.

You need conviction in your strategy so you can handle volatility without doing dumb things. Conviction comes from knowledge + experience.

In most market environments, strong stocks perform extremely well. The exception is bear markets and liquidity crises, where hedging matters most. Otherwise, concentrate on stocks in strong phases. Right now, memory, fiber optics, gold miners, and commodities stand out.

Great managers are great at execution. It’s not only about picking good stocks, but also about position sizing, letting winners run, and cutting losses short. I would argue that execution is even more important than stock picking.

Strategies should be built on first principles. There is no single magic formula in fundamental or technical analysis. You need to understand the concepts that truly make sense and matter most (the 80/20 rule), and have the courage and discipline to execute.

Transforming High Achieving Women To Break Through To A Top-Tier Career & In Life » No Stress Or Burnouts » Women Leaders OS™ » 5X Founder » Ex-MP » Impact & Innovation Consultant » Public & Private » Keynote Speaker

I am Sihame.
My name — meaning Arrow in Arabic — was chosen by my parents with intention. The arrow is a symbol of direction, strength, and purpose, and it reflects how I move: with focus, precision, and intent.

Rooted in both Belgium and Morocco, I have spent years navigating complex political, cultural, and business landscapes across the MENA region. 

My work thrives in spaces where trust is earned quietly, influence is built over time, and impact is achieved without noise.

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The Battle

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Sihame E.

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Engagements

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Performance Score.css-goub6s{font-size:var(--chakra-fontSizes-md);font-weight:500;color:var(--chakra-colors-gray-600);display:block;margin-top:var(--chakra-space-1);}Marcello Duarte Vieira's LinkedIn Performance

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