Icehouse Ventures | Resources

What Would It Take to Build a Trillion-Dollar NZX?

Written by Barnaby Marshall | March 2026

Rocket Lab is worth more than thirty NZX Top 50 companies combined. Let that sink in.

One company founded here, and still deeply connected to this country, has a market capitalisation of roughly NZ$66 billion. The entire NZX, across all 126 listed companies, totals around $381 billion.

What would 10 more Rocket Labs do for the New Zealand economy?

 

The price of not doing this

Before we talk ambition, it's worth being clear about the stakes at hand.

New Zealand's traditional export base of food, fibre, and tourism is largely capacity-constrained. We can't manufacture more land. One hundred and fifty years of incremental efficiency gains in agriculture mean any jumps in yield are hard to come by. Tourism is limited by infrastructure. These are great industries, but they are not growth engines.

Technology is the one export category that can genuinely compound. The question of whether we produce ten more Rocket Labs isn't just about a larger stock exchange. It's about whether this country has an economic growth engine capable of keeping pace with the rest of the world.

Falling behind on a relative income basis, over decades, has consequences that reach well beyond the venture ecosystem. A technology-led future benefits all of New Zealand, including the generations to come.

 

The talent already exists

Ten more companies at Rocket Lab's scale would add approximately NZ$660 billion to our country’s market capitalisation. That’d triple the size of the NZ public equity market. That’s not incremental progress. That would transform New Zealand’s middling equities market into a sought-after market for global capital.

The good news is - the companies that could deliver this potentially already exist.

Halter is the world’s leading virtual fencing and animal management system for beef and dairy farmers. Halter is now managing one million cattle and was recently valued at NZ $3 billion by one of the most successful private investors of all time. It’s estimated there are 354 million cattle in their target market. They are just getting started.

Partly is developing a foundational AI model to organise the world’s parts data. $7 trillion is spent annually on parts, making it one of the world’s largest markets. Partly has been quietly building software in Christchurch to bring order to a vast, disaggregated market. They were recently valued at more than NZ$800 million, and they’re now live in 4 major markets, and after 6 years, are gathering significant steam.

Dawn Aerospace and OpenStar Technologies are building globally unique products in the aerospace and energy verticals. Sharesies has democratised retail investing across Australasia. Crimson Education, Hnry, Tracksuit, Basis, First AML, Zethos - are all winning in their markets - and the list keeps going.

These businesses are beyond the stage of speculative concepts. They are companies with real products, real customers, and real competitive advantages in markets large enough to produce generational outcomes.

 

The flywheel effect

When a company like Rocket Lab scales from New Zealand, it doesn't just create shareholder value - it creates a network effect. Engineers stay instead of leaving. Venture capital follows. Supply chains develop. Talent eventually moves on from these companies to start new ventures or join earlier-stage teams, becoming the engine that drives the next wave.

Roles in high-growth companies create high-income households. The multiplier effect in a small economy like New Zealand's is extraordinary.

More big companies attract more talent, and more talent spawns more startups. More startups produce more success stories.

It’s been 27 years since Trade Me was founded. The shareholders of Trademe invested in Xero and Vend and started Movac (New Zealand’s longest-running venture firm). Sir Peter Beck backed Halter with investment and time and joined the board from day one. The founders of Dawn Aerospace and Partly were both early employees at Rocket Lab. The founders of Zethos, Mint Innovation and Avertana all worked previously at Lanzatech. The network effects are obvious and observable, and the growth in the system is compounding.

 

The All Blacks analogy

New Zealand expects to win at rugby (or at least we have, until recently). When the All Blacks take the field, the baseline assumption from fans, media, sponsors, and the players themselves is that they will compete to win. When they don't, there's a collective sense of dissonance that something went wrong.

We don’t have that same expectation of our entrepreneurs. When a New Zealand startup raises a Series B, the prevailing assumption is still that it will probably be acquired by a larger overseas company, or become a solid regional player, or maybe - if everything goes right - reach a modest scale. The cultural ceiling is real, and it gets internalised long before a company ever tests its true potential.

Part of the problem is what we celebrate. New Zealand has a habit of lionising the quick exit and the clean flip, the tidy acquisition. It's understandable. But it's also antithetical to the ambition we're talking about.

You can't build a Rocket Lab on a seven-year return horizon, and every time we celebrate the flip, we quietly signal that this is the acceptable level of ambition. Rocket Lab was founded in 2006. It took them 18 years to create $9 billion NZD in value and 2 more years to create an additional $55 billion. Patience is a virtue.

For the economy we all want and the public services we expect, we need to expect greatness from the companies we build. We need to expect that the next Meta, Nvidia, and Apple will be built from here and owned here for the long term.

The truth of the matter is that many people squirm when they read that, or furrow their brow. Making bold statements tends to engender an incredulous response from many Kiwis. Why is that?

For it to be possible, we have to believe it to be possible.

 

Ambition is the true constraint

The instinct is to assume capital is the bottleneck. It isn't. The rate-limiting factor is collective ambition across founders, investors, boards, and the broader ecosystem. When there is a genuine expectation of more, shared across the whole system, everything else follows. Capital follows ambition, not the other way around.

Founders who expect to build a $50 billion USD company make different hiring decisions, different product decisions, and different geographic decisions than founders who expect to build a $500 million company. Investors who expect generational outcomes structure deals differently, govern differently, and tolerate different timelines. Boards that expect world-class results ask different questions.

 

A trillion-dollar exchange is within reach

So what will it take to transform NZ’s public equity market from billions to trillions, and reap the second and third-order benefits for our economy?

The gap isn't defined by resources, geography, or available capital. It's defined by what we collectively believe is possible.

The ABs don't take the field hoping for a decent performance. Neither should we.

 

Connect with Barnaby here.