You Bought the S&P 500… What Next? (Part 1)

How Thematic Investing Helps Investors Find the Next Nvidia or Amazon

Last week, I wrote about why many beginner investors start with the S&P 500.

And honestly, that makes sense.

It gives you exposure to some of the biggest companies in the world, the Magnificent 7:

• Apple 🍎

• Microsoft 💻

• Nvidia ⚡

• Amazon 📦

• Meta 📱

• Alphabet (Google) 🔍

• Tesla 🚗

These companies have driven a huge amount of stock market returns over recent years.

And for many investors, funds tracking the S&P 500 or global equity markets form the core of their portfolio.

But eventually, many investors start asking:

“What comes next after building my core portfolio?”

Because while global equity funds provide broad exposure to the market, many investors also want exposure to:

• future innovation,

• emerging industries,

• and long-term structural growth.

Some people are also asking:

• “How can I improve my long-term return potential?”

• “What else can I add to my portfolio?”

• “How do I participate in future growth?”

That’s where thematic investing comes in.

What Is Thematic Investing? 🌍

Thematic investing is about investing in long-term changes happening in the world.

Instead of investing purely by:

• sector,

• country,

• or company size,

thematic investors ask:

“What trends could shape the future economy?”

Then they invest around those ideas.

Examples include:

• Artificial Intelligence (AI) 🤖

• Cybersecurity 🔐

• Robotics & Automation ⚙️

• Humanoid Robots & Physical AI 🦿

• Semiconductors 🧠

• Cloud Computing ☁️

• Digital Finance 💳

• Blockchain ⛓️

• Clean Energy 🌱

• Nuclear Energy ⚛️

• Defence & Geopolitics 🛡️

• Healthcare Innovation 🏥

• Genomics 🧬

• Electric Vehicles 🔋

• Battery Technology 🔌

• Water & Food Security 💧

• Space Technology 🚀

• Quantum Computing 🧪

• Ageing Populations 👵

The idea is simple:

invest in areas of the economy that could benefit from major long-term structural change.

In many ways, thematic investing is really about:

investing in the future.

What Does “Top-Down Investing” Mean? 🧠

Thematic investing is often described as a top-down investment approach.

That simply means you start with the big picture first.

For example:

Instead of saying:

“I like this company.”

You start by saying:

“I think AI is going to transform the global economy.”

Then you work downward:

• Which industries benefit?

• Which businesses may grow?

• Which companies are positioned well?

So the process looks like this:

Big trend → Industry → Companies

For example:

AI growth

→ Semiconductor demand

→ Nvidia, AMD, TSMC

Or:

Ageing populations

→ Labour shortages & rising care demand

→ Robotics, automation, healthcare technology and humanoid AI

Themes help investors identify where future growth may emerge.

Why This Matters So Much 📈

One of the biggest lessons in investing is this:

👉 A very small number of companies drive most long-term stock market returns.

Think about the Magnificent 7.

These companies didn’t just grow.

They generated enormous returns for investors over time.

Research from finance professor Hendrik Bessembinder, who studied more than 100 years of stock market history, found that a small number of companies were responsible for most long-term market gains.

In other words:

A handful of exceptional businesses end up doing most of the heavy lifting.

But the opposite also happens too.

Many companies:

• fail,

• get disrupted,

• lose relevance,

• or never live up to the hype.

That’s why thematic investing isn’t really about trying to perfectly predict one winning stock.

It’s about increasing your chances of having exposure to the areas where future winners may emerge.

This Is Why Thematic Investing Exists 🚀

Thematic investing is really about trying to increase your chances of owning future winners.

The challenge is:

• nobody knows exactly which company wins,

• which technology dominates,

• or which management team executes best.

Finding the trend is usually easier than finding the winner.

In the late 1990s, many people knew the internet would change the world.

But not every internet company survived.

The same thing could happen with AI today.

That’s why many investors prefer investing across a basket of companies within a theme rather than trying to pick one perfect stock.

For example, instead of betting on one AI company, investors may spread exposure across:

• semiconductors,

• robotics,

• AI infrastructure,

• cloud computing,

• and software businesses.

Because the goal is not perfection.

The goal is exposure to the future.

And if only a small number of companies end up driving most returns…

👉 missing those winners can matter enormously.

Single Themes vs Multi-Theme Megatrend Investing 🌍

Some investors choose to invest in a single theme:

• AI 🤖

• Cybersecurity 🔐

• Robotics ⚙️

• Clean Energy 🌱

This gives very targeted exposure to one specific trend.

But others prefer a broader multi-theme megatrend approach.

The idea is that some structural changes may shape the economy for many years, sometimes decades, not just 1 or 2 years.

Themes like:

• AI,

• automation,

• digitalisation,

• electrification,

• healthcare innovation,

• geopolitical change,

• and ageing populations

could all fundamentally reshape how the world operates over time.

Rather than trying to predict which single theme will outperform, some multi-thematic strategies invest across a broad basket of long-term trends together.

These portfolios may hold exposure across:

• AI & Semiconductors 🤖

• Robotics & Automation ⚙️

• Cybersecurity 🔐

• Digital Infrastructure ☁️

• Healthcare Innovation 🏥

• Energy Transition ⚡

• Defence & Geopolitics 🛡️

• Humanoid & Physical AI 🦿

Some strategies also dynamically adjust exposure between themes over time depending on:

• market leadership,

• momentum,

• valuations,

• or changing economic conditions.

The thinking is simple:

The future probably won’t be driven by one single trend alone.

For many investors, multi-theme investing can feel like a more diversified way to invest in long-term structural change while still keeping exposure to future growth opportunities.

Thematic Investing Isn’t Meant to Replace Your Core Portfolio 🏗️

This part is important.

As I mentioned last week, for most people, broad diversified equities still form the core of a portfolio.

That may include:

• global equity index funds,

• pensions,

• diversified ETFs,

• or broad market exposure.

Thematic investing is usually the satellite allocation around that core.

For example:

• your core portfolio may represent 70–90% of investments,

• while thematic investments make up a smaller higher-growth allocation around it.

The exact split depends on:

• risk tolerance,

• time horizon,

• investment experience,

• and personal conviction.

Think of it like this:

Your core portfolio captures today’s economy.

Thematic investing tries to capture parts of tomorrow’s economy.

Final Thoughts 🌍

Thematic investing is ultimately about one big question:

“What could shape the world over the next decade and beyond?”

The companies leading those changes could become the next generation of stock market giants.

But humility matters.

Because history teaches us something important:

Identifying the trend is easier than identifying the winner.

That’s why thematic investing is less about trying to perfectly predict the future…

…and more about giving yourself exposure to the possibility that the future’s biggest winners may already be emerging today.

Next week, I’ll shift gears slightly and break down cryptocurrency investing, digital assets and why this area continues to divide investors so heavily.