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

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.

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

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.

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.

Most investors spend too much time asking: “Am I right or wrong?”
The better question is:
 “How much do I make if I’m right, and how much do I lose if I’m wrong?”
That is the real game.
In investing, win rate is overrated.
 Payoff ratio is what changes everything.
You can be right 70% of the time and still lose.
 You can be right 30% of the time and still outperform.
That is why investing is so hard: it goes against human nature.
 And that is also why conviction and sizing matter far more than most people think.

Over the last 14 years, I’ve built two successful companies and have spoken in over 14 international countries, sharing my expertise with a growing community of over 100,000 people.

My mission is to help companies create engaging content, generate leads, and profit from social media, and empower speakers to gain confidence, secure paid gigs, and become thought leaders.

I’m the founder of ZC Social Media, where we specialise in social media strategy, content creation, and lead generation, and of The Credibility Formula, dedicated to helping speakers become professional speakers and recognised thought leaders.

My portfolio:

→ I'm the founder & CEO of ZC Social Media, a social media agency with a vibrant online community of over 100,000 people
→ I’m the founder & CEO of The Credibility Formula, where I coach speakers to build their confidence and secure paid speaking engagements
→ I offer bespoke 1-2-1 training and consultancy to help businesses and individuals master social media
→ I lead the ZC Social Media Growth Academy, a programme designed to help businesses grow their online presence
→ I am a published author, recognised as a Top Voice on LinkedIn, and have made appearances on BBC, ITV, and BBC World News to share my insights on social media and thought leadership
→ I’ve had the privilege of speaking for NATO, a top brand to work with, further establishing my credibility on the global stage

My results:

→ 100k+ online community
→ 14+ years as the owner of ZC Social Media Agency
→ Speaker at events in 14+ international countries
→ Published author and recognised thought leader
→ TV and radio appearances on BBC, ITV, and BBC World News, Sky News, Ch4 and KMTV

If you want to learn more about how I built this, you can join my newsletter and receive a free video on “How to Get More Speaking Gigs from LinkedIn”:

→ GO HERE: http://www.zcsocialmedia.com/newsletter

If you want to explore 1-2-1 training or consultancy, visit my personal site:

→ GO HERE: http://www.zcsocialmedia.com

If you want to join the ZC Social Media Growth Academy:

→ GO HERE: http://www.zcsocialmediaacademy.com

If you want to join The Credibility Formula to gain confidence, get paid gigs, and become a thought leader, DM me.

Instagram: @zcairns
Facebook: ZoeCairnsUK
Twitter: @zoe_cairns
YouTube: @ZoeCairns

Zoe Cairns

We’re all set and ready for The Kent Business Show tomorrow at Ashford International!

Looking forward to seeing you all! 🙌🏻

International Social Media Speaker and Trainer |Social Media Consultant | Social Media Strategist | BSc Hons

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There are so many people who are quietly brilliant at what they do… but hardly anyone knows about them.

They have experience.
They get results.
They care about their work.

Yet they’re watching others get the speaking slots, the podcast invites, the partnerships and the clients.

This is something I see all the time.

It’s rarely about who is better. It’s about who is visible.

You can be delivering excellent work behind the scenes, but if you’re not regularly showing up, sharing your thinking and putting yourself in the right rooms, people won’t automatically think of you.

And if they don’t think of you, they won’t choose you.

Visibility isn’t ego. It’s strategy.

When we start focusing on visibility properly, everything shifts. Conversations change. Opportunities increase. Confidence grows because you’re no longer hidden.

If you want stronger credibility, better opportunities and consistent growth, you have to make it clear who you are and what you stand for.

Here are three simple ways to start:

→ Share your thinking
Talk about what you’re seeing in your industry. Share lessons, opinions and patterns you’ve noticed. Let people see how you think.

→ Put yourself forward
Apply to speak. Pitch for podcasts. Reach out for collaborations. Opportunities rarely land in your inbox by accident.

→ Stay consistent
One strong, thoughtful post each week builds far more authority than disappearing for months at a time.

If you feel overlooked right now, it’s usually not a talent issue.

It’s a visibility issue.

And that can be fixed.

P.S. If you know visibility is the thing holding you back, and you’re ready to raise your profile properly, DM me about Influence starting in April.

MORE THAN 80+ BUSINESSES JOINED US  TO GET PRACTICAL WITH AI

Last Thursday was a brilliant day inside the Growth Academy.

We started with over 30 members joining me for our AI Workshop at The Bridgewood Manor Hotel & Spa

The aim wasn’t to overwhelm anyone with tech talk. 

It was to show them how to actually use AI in their own business in a way that makes sense.

During the session, we covered:
• How to write better AI prompts using my C.L.A.R.I.T.Y Method
 • How to build their own AI model to create personal brand images
 • How to create an AI Twin for consistent, on-brand photos
 • How to set up simple workflows to automate repetitive weekly tasks using tools like Make and Zapier

What I loved most was seeing the shift in confidence across the room. 

People who started the day unsure about AI were leaving with real results and clear next steps.

One piece of feedback really stood out. Fiona said:

“I’d recently completed a prompt engineering course elsewhere, and although I finished it, it was so dull and a real struggle. Your AI course was the total opposite. Your examples bring everything together, so it makes sense and comes to life in front of us.”

That’s exactly what I want, clear, practical and useful.

Later that afternoon, we hosted our quarterly FREE ZC Social Media Academy networking event, which this time was an AI Special. 

Over 60 businesses joined us alongside our members. I shared three simple AI workflows that people can start using straight away.

We also launched the new AI Studio LAB inside the Growth Academy, with more hands-on AI training coming soon.

We finished the day with pizza, feedback, and some open conversations about what’s coming in 2026. 

It was a brilliant day! One I loved was delivering and also working with some amazing Kent and Medway businesses.

p.s If you’d like to know more about the Growth Academy, send me a message and I’ll happily share the details.

Especially if you’re curious about our upcoming ManyChat Automation Masterclass.

Kathy Barbara Gareth Hanna Tawa Fiona Mark Roland Lorraine Teresa Angel Sapphire Charles Jude Amanda Clare Paul Katherine Phil Unchalee

I forgot the final line of my closing quote… in front of a full room.

I was speaking about social media and how consistency compounds. 

The whole session had built up to this final point. I wanted to end on a quote I love:

“If we always do what we’ve always done, we’ll always get what we’ve always got.”

I started confidently.

“If we always do what we’ve always done…”

And then my mind went blank.

I couldn’t remember the second half.

Internally, I felt that rush. I felt hot. I could feel the slight shake. You know that split second where everything feels louder in your own head.

I paused and said, “I can’t remember the exact wording, but here’s what it means.”

And I carried on.

I explained that if we keep doing the same thing without measuring or improving, we’ll keep getting the same results. 

As I was finishing that sentence, the original quote came back to me, so I delivered it properly.

Big round of applause.

Afterwards, people came up to me and said they loved the authenticity and how I handled it.

What that moment taught me is this:

→ Stay calm
 Your body reacts before your brain does. Slow yourself down. Breathe. The audience will follow your energy.

→ Focus on the message
 You don’t need perfect wording. You need clarity. The meaning matters more than the quote.

→ Keep going
 Momentum is more important than perfection. Most people won’t notice what you think was a mistake.

The more visible you become, the more moments like this you’ll experience. 

That’s part of growth.

Confidence isn’t about never wobbling.

It’s about knowing you can recover.

P.S. If visibility is the thing holding you back and you’re ready to raise your profile properly, DM me about Influence starting in April.

I said yes to a TV interview. When I arrived, it wasn’t what I’d expected.

Not every opportunity is the right opportunity.

A tv journalist once messaged me asking if I could come up to London for an interview. It sounded exciting. Great exposure. A good platform.

So I said yes.

When I arrived, it wasn’t quite what I’d expected. It was a different show, a different tone and not fully aligned with what I thought I was walking into.

It wasn’t “bad”. It just wasn’t right.

And that moment taught me something important about visibility.

As your profile grows, more doors open. But not every open door should be walked through.

Here’s what I now do differently:

→ Research the platform properly
Don’t just look at the logo. Watch previous episodes. Look at the tone. 

See how guests are introduced and what type of conversations they have. Know exactly who the audience is and whether they are your audience. Visibility affects how you are positioned, so make sure you’re comfortable being associated with that platform.

→ Ask clearer questions upfront

What’s the angle of the interview? Are there any sensitive topics? Is it live or pre-recorded? Who else is on the panel? The more information you have beforehand, the more prepared and confident you’ll feel. Never assume the conversation will stay in your lane.

→ Protect your brand values
Exposure can feel flattering, especially when you’re building momentum. But ask yourself: does this align with how I want to be known? Does this support my long-term positioning? One appearance might not define you, but repeated misalignment will.

When you’re building authority, being visible isn’t about saying yes to everything.

It’s about being intentional about where you show up.

And remembering what you stand for. Your values. Your beliefs.

One minute of TV isn’t worth undoing years of hard work building your reputation.

P.S. If visibility is the thing holding you back and you’re ready to raise your profile properly, DM me about Influence starting in April.

Great to be back speaking at The Kent Business Show today at the Ashford International Hotel. Thank you Carole Black and Penny Wallis for the opportunity. A great event!  

I started the day on the Digital Kent Panel, expertly chaired by Josh Whiten, alongside Mark Jennings , Hayden Bloomfield  and Rachael Bryant.

It was a really thought-provoking discussion covering the future of AI, the importance of looking at both the top and bottom of the funnel, and how businesses can strengthen client retention. Some great insights shared across the panel and brilliant engagement from the audience too.

It was also lovely to see so many familiar faces, some I haven’t seen in almost a year, and to meet plenty of new people throughout the day.

A big thank you to Sarah Stacey for all her support throughout the day. Having a great team around you at events like this makes such a difference.

In the afternoon, I delivered my session on AI and the Show-Up System, focusing on how content is being discovered differently and what that means for businesses moving forward.

For anyone who couldn’t make the session, here are three key takeaways:

The way people find content is shifting. Social platforms are becoming more search-driven, which means what you say in your content matters more than ever.

Start with what your audience is already looking for. The most effective content often comes from the questions your customers are already asking.

AI can support your process, but strategy comes first. When you combine the right content direction with AI, it can save time and bring more consistency to your output.

A brilliant day all round. Thank you to everyone who came along, joined the sessions, or stopped for a chat.

#KentBusinessShow #AIForBusiness #ContentStrategy

Im looking forward to speaking tomorrow at The Kent Business Show at The Ashford International Hotel.

I’ll be joining the Digital Kent Panel in the morning, sharing thoughts on the digital trends businesses across Kent should be paying attention to right now.

Then at 2:30pm I’ll be delivering a talk on:

How AI Is Changing Content Visibility and What Businesses Need to Know for 2026.

The way people discover content online is shifting quickly. Platforms are evolving, search behaviour is changing, and the old approach to posting on social media isn’t working in the same way anymore.

In the session I’ll be exploring:

→ One of the biggest shifts happening in content discovery right now
→ How AI is influencing modern content strategy
→ What businesses should be thinking about as we move into 2026

If you’re attending the show, come along to the session at 2:30pm or feel free to say hello during the day.

It would be lovely to see some familiar faces.

#KentBusinessShow #AIForBusiness #ContentStrategy

"We’re posting on the company page… but leadership aren’t really involved".

If you’re in marketing, you’ll know exactly what this feels like.

You’re planning the content calendar.
You’re making sure the page doesn’t go quiet.
You’re pulling the stats together each month to show what’s working.

But senior leaders either aren’t posting at all… or they’re resharing the company update with “Great work team 👏” and leaving it there.

Then the question comes back to you:

Why isn’t LinkedIn growing?

Here’s what’s often missing.

Company pages rarely grow on their own. On LinkedIn, people connect with people first. If leadership aren’t visible in a consistent and intentional way, the company page can only go so far.

When leaders aren’t clear on what they should be talking about, why it matters, or how it connects to the bigger picture of the business, LinkedIn becomes “a marketing job” instead of something the whole business stands behind.

So what actually helps?

→ Start with the company goals. What is the business focused on this year? Recruitment? Positioning? New services? LinkedIn should reflect that direction.

→ Align this with the marketing plan. Campaign themes and priorities shouldn’t sit separately from leadership content. They should support each other.

→ Define clear visibility pillars for leadership. Industry insight. Business updates. People and culture. Client stories. When leaders know what they need their posts to be focused on, posting becomes simpler and more consistent.

→ Audit and optimise senior profiles. If someone lands on a leadership profile, does it clearly position them and reinforce the company message?

→ Put structure and support in place. Most leaders aren’t unwilling. They’re unsure. With guidance and a clear plan, everything becomes easier.

Recently, I’ve been working with a large brand in London where we aligned the company page strategy with a leadership strategy, rewrote senior profiles, and mapped out content pillars for the senior team. The biggest shift wasn’t just engagement. It was focus and consistency.

It stopped feeling like marketing pushing content out alone and started feeling properly joined up.

P.S. We’re onboarding two LinkedIn management clients this month. If you’d like to explore a more structured LinkedIn approach for both your company page and leadership team, send me a message.

Looking forward to speaking at The Kent Business Show on the 19th March.

#KBS2026

Final session – don’t miss this - How AI can transform your content #KBS2026
We are delighted to close the The Kent Business Show with Zoe Cairns one of the UK’s leading social media speakers.

AI is making it faster and easier to create great content and Zoe will show you exactly how to use it in your business. From coming up with ideas to writing posts and creating graphics.  You will see how AI can save you hours and help you stay visible.

If you promote your business online you will have the confidence to work smarter and stay ahead. Zoe is known for her practical down-to-earth advice so you will leave with ideas you can use straight away.

Zoe Cairns | 2.30pm | Whitstable Room
19 March
Ashford International Hotel

Just once a year — don’t miss this packed day full of opportunities.
Book your free place now: www.kentbusinessshow.co.uk

#KBS2026 #KentBusinessShow #AIforBusiness #SocialMediaTips #ContentCreation #KentBusiness #BusinessEvents #MarketingTips #WorkSmarter #Ashford #UKBusiness

“We’re posting regularly on LinkedIn… but it’s not really going anywhere.”

I hear this quite often when speaking with marketing teams.

The company page is active. Posts are going out. Leadership might occasionally reshare something. On the surface it looks like LinkedIn is being used properly.

But underneath that, there’s often a feeling that the platform should be doing more for the business.

More visibility.
More engagement.
More recognition in the industry.

When I take a closer look, the problem usually isn’t the effort going in. It’s that a few important things haven’t been properly clarified before the content starts going out.

Here are three areas I usually suggest marketing teams look at first.

→ Start with the strategy

LinkedIn works best when it’s aligned with the wider goals of the business. Are you trying to attract new clients, support recruitment, position the company as experts in your sector, or raise the profile of leadership?

If that direction isn’t clear, LinkedIn can easily become a place where posts go out regularly but they don’t really move the business forward.

→ Look closely at the messaging

Some of the posts that often gain the strongest response are the ones that show the people behind the business. 

Team moments, behind-the-scenes from projects, photos from site visits or events, and stories that show what the work actually looks like day to day. These types of updates tend to feel more real and give people a glimpse inside the organisation rather than simply broadcasting announcements.

→ Pay attention to what is working on LinkedIn right now

Some formats, topics and styles of posts gain far more traction than others.

When marketing teams understand what types of content are currently performing well on the platform, it becomes much easier to create posts in a way that fits how people are actually using LinkedIn.

Without those three areas in place, teams often end up posting regularly but feeling unsure about whether LinkedIn is really working for the business.

Once they are clear, everything becomes much easier to plan and far more focused.

P.S. I’m currently onboarding two LinkedIn management clients where we’re reviewing these exact areas before building their strategy. If your team would like support bringing structure and focus to LinkedIn, feel free to send me a message.

Marketing can’t carry LinkedIn alone.

After my last post, I had a couple of marketing managers reach out saying, “This is exactly where we’re at… but what do we actually do next?”

So let’s talk about the first step.

If LinkedIn feels disjointed between the company page and leadership, the answer isn’t more posts or another content push.

It’s alignment.

Here’s what I would do first:

→ Plan a date to bring the leadership team together.

Not a quick chat in passing. A focused session purely on LinkedIn and visibility. Use that time to show how LinkedIn can support the business when it’s aligned properly. 

When leaders understand how their voice contributes to the bigger picture, things shift quickly.

→ Bring in someone to guide that session.

This is often where I come in.

Sometimes hearing it from outside the business removes the pressure from marketing and reframes LinkedIn as a business-wide opportunity rather than just a marketing task. 

In those sessions, I walk leadership teams through what good looks like, how personal visibility supports the company page, and what role each person plays.

It gives everyone focus and a shared understanding.

→ Then map the strategy properly.

Define leadership visibility pillars. Agree the themes that reflect the direction of the business. Clarify how personal profiles and the company page support one another. Decide what consistency looks like and who owns what.

When everyone understands the why and the how, action becomes much easier.

What works best is when LinkedIn stops being something marketing are chasing people about and starts being something leadership feel confident contributing to.

That shift doesn’t happen by accident. It happens when there’s structure and buy-in.

P.S. We’re onboarding two LinkedIn management clients this month. If bringing leadership and marketing into alignment on LinkedIn is something you’d like support with, send me a message.

It’s been a week since I shared Influence, and I’ve honestly been overwhelmed by the response.

One of the most common themes in the conversations I’ve had is this:

“I’ve got years of experience… but I’m not sure how to turn it into something bigger.”

And this is where personal branding really matters.

A personal brand isn’t just about posting on LinkedIn.

It’s about getting clear on what you know, what you stand for, and how that knowledge can become something scalable.

For some people, that’s a digital product.
For others, it’s a membership.
For others, it’s a structured programme or workshop.
But none of that works if your thinking is still stuck at “I just deliver services”.

Inside Influence, we spend time mapping this properly.

What do you actually know inside out?
What do people repeatedly ask you for help with?
What could that become if you structured it intentionally?

Because monetising your knowledge isn’t about adding more work.
It’s about packaging what you already know in a smarter way.

That’s a huge part of building a personal brand that grows beyond you.

There are five spaces remaining for April.

P.S. If you’ve been sitting on knowledge you know could become something more, DM me Influence and we’ll start the conversation.

#PersonalBrand #OnlineBusiness #ThoughtLeadership #Influence

If platforms can push content to millions in minutes…
Why can’t they stop harmful content just as fast?

I’ve been following the Mark Zuckerberg case and it’s really made me think. (News case here: https://lnkd.in/eSHta7CA)

Social media platforms are built to keep us on them. 

The scrolling, the suggested posts, the notifications, none of that is random. The longer we stay, the more money the platform makes.  That’s just how the model works.

For adults, that’s one thing. We can (hopefully) manage our time and make choices.

For young people, it’s different.

They are growing up with feeds that never end, content that can shape how they see themselves, and now AI making it even harder to tell what’s real and what’s fake. That worries me.

Where I think the bigger issue sits now is content moderation, especially with AI. 

The speed at which fake news, deepfakes and harmful content can be created is frightening.  Waiting until something has already gone viral before taking it down isn’t good enough.

If platforms have the technology to push content to millions within minutes, they should also have stronger systems at the posting stage. Not just reacting once the damage is done.

Social media has done amazing things for connection and business.

But we can’t ignore the other side of it.

What are your thoughts?

taplio

The Battle

Marcello Duarte Vieira

Zoe Cairns

Followers

Posts

Engagements

Likes

Performance ScoreMarcello Duarte Vieira's LinkedIn Performance

Performance ScoreZoe Cairns's LinkedIn Performance

Ready to grow your LinkedIn presence?

taplio

The Battle

Marcello Duarte Vieira

Zoe Cairns

Followers

Posts

Engagements

Likes

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

Performance ScoreZoe Cairns's LinkedIn Performance

Ready to grow your LinkedIn presence?

Performance ScoreMarcello Duarte Vieira's LinkedIn Performance