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

Coach Accelerator Masterclass

There's not enough advice on how coaches can work in professional football coaching.

My advice (after 17,000 LinkedIn™ followers) is:

• Tried, Tested and Achievable
• Proven to work over time (if consistent)
• Verified by coaches who have done the work

I've also coached 100+ people 1:1...

• Matthew secured a Premier League academy role in 30 days
• Miguel gained academy experience in 60 days with a UEFA C
• Harrison was offered a [hidden] job at an academy in 90 days

And over 200 who've taken my workshops...

• Now know the steps to become a professional academy coach
• Now how to write a successful application for their UEFA B Licence
• Now are confident in their networking strategies to get ahead in football

I love to coach. But I love to see people win more!

Are you and I gonna win together?

If you're desperate (genuinely!) book a FREE 1:1 coach support call with me.

Booking link: https://0kdhvk8iduv.typeform.com/to/MY3PrUWm?typeform-source=www.linkedin.com

Arsenal F.C

U15s/U16s Talent ID Coach

U15s/U16s Talent ID Scout

Coaching and developing elite football players within the Youth Development Phase

Youth Development Phase Academy Coach

West Ham United Foundation

Consistently exceeded department and project growth and sustainability whilst developing consistently high-performing teams.

Successfully negotiated and managed long-term engagement of high-profile organisation Ambassador, leading to a programme nomination at the 2021 Football Business Awards and national recognition.
 
Designed and implemented several strategic organisational business cases linked to local and national government initiatives which contributed to driving organizational financial growth.

Led, designed and implemented continual successful grant applications, securing over 1 million in new business opportunities and strategic implementation of funding pipelines and business cycle growth.

Education Manager

Senior Education Officer

Enfield County School for Girls

As part of the Team of Governors; responsible for overseeing the management side of a school: strategy, policy, budgeting and staffing

School Governor 

Fulham Football Club

Coaching and developing elite football players within the Foundation and Youth Development Phases

Academy Coach

Southend United Football Club

Youth Development Phase Coach

Let Me Play

Directed delivery and risk management of Enfield delivery centre for Level 1 and 2 BTEC, PSD and NVQ sport and employability qualifications for young people (aged 16 – 21 years).

Lead Sports Coach & Tutor

TFA Academy

Tottenham Hotspur LTD

Youth Development Phase Coach Apprentice

Cambridge Girls Centre of Excellence

Foundation and Youth Development Phase Coach

Over the last decade, I’ve been an Academy Coach at Arsenal FC, Tottenham FC. Fulham FC and Southend United FC Academy coaching over 700 elite academy football players.

My mission is to inspire 1 million coaches to excel and fulfil their dreams through proven coaching blueprints.

I help coaches to set clear goals, identifying the incremental steps to take and how to maximise each experience.

I’m the founder of the Coach Accelerator Community.

My portfolio:

→ I’m the founder Excellence Academy providing specialist coaching services to players across 35+ professional football clubs to date
→ I work alongside grassroots clubs to revamp and put systems in place which align with their club vision, playing philosophy and training syllabus
→ I coach coaches that need help with future pathway planning, admission onto football courses, coach delivery and personal development.
→ I work with international groups to provide elite training experiences 

My results:

→ 120,000+ following on social media
→ 20 million content impressions annually 
→ Growth of 3x within 120 days supporting coaching profiles on X

If you want to learn more about how to excel as a football coach you can join my newsletter:

→ GO HERE: https://thecoachesnewsletter.com/

If you want to have a 1:1 clarity call, book on my calendal link:

→ GO HERE: https://calendly.com/twilliams-pwg/coach-accelerator-programme

Email: twilliams@excellence-academy.co.uk
Twitter: @Coach_Temisan
Instagram: @Coach_Temisan
TikTok: @Coach_Temisan

taplio

The Battle

Marcello Duarte Vieira

Temisan Williams MSc, BSc

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