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

Concordant AI

I build AI agents for content creation. 

We scrape social media platforms to find outliers, do high fidelity research, write viral content (over 100M views generated).

Wayne Yap Pte. Ltd.

HoldCo: I buy and invest in wonderful businesses with $300k-$1m profits.

Private Equity Investor

Kosme Aesthetics

20-30% month over month revenue growth

As of Aug 2022, we’ve 40x-ed revenue and improved bottom-line profits by $50k/month
As of Apr 2023, we've 92x-ed revenue and are on track to double again in the next 4-5 months.

Owner

My Gym Children's Fitness Center - Great World

Principal Owner

beyondpoker.com

Podcast Host

UG Advisory

Business Upgrade Summit

~2000 sign-ups for the summit where I interviewed Jay Abraham, Roland Frasier, Mike Koenigs, Preethaji, Tucker Max, Benjamin Hardy, Elliot Roe and Steve Tan.

Summit Host

Self-Employed

>USD $1,500,000 in Live Cash Games
>USD $1,000,000 in Online Cash Games
USD $1,419,184 in Live Tournaments

Professional Poker Player

I was formerly Singapore's #1 poker player and quit to seek transcendental experiences.

Now I build AI agents to help businesses add $20k profits (or it's FREE).

Using LinkedIn to document my journey so follow me here :)

Also have a daily newsletter with 50% open rates: https://wayneyap.com/newsletter

Went from 100 followers to 15k in 6 months on X: @wayneyap
Growing my Instagram and TikTok: @wayneyap_

Let's connect if you've built functional AI agents.

taplio

The Battle

Marcello Duarte Vieira

Wayne Yap

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