Sorry for the very long post, but there's a lot to be said from yesterdays IPO…

The strongest bull case for Silex Microsystems is not that it is "another semiconductor company" – it is that it combines several of the exact ingredients that created the explosive rerating in Sivers Semiconductors, but arguably with stronger industrial fundamentals and higher barriers to entry.

1. Silex sits directly inside multiple megatrends at once

Silex manufactures MEMS (Micro-Electro-Mechanical Systems), which are critical components in:

• AI infrastructure
• Sensors
• Autonomous vehicles
• Medical devices
• Industrial automation
• Advanced smartphones
• Defense and aerospace
• IoT and edge computing

The company itself highlights AI, 5G, IoT, automation, and autonomous driving as structural growth drivers. 

That matters because the market increasingly rewards semiconductor companies exposed to “infrastructure bottlenecks” of the AI era.

Sivers exploded because investors suddenly realized photonics and optical connectivity are becoming essential for AI datacenters. 

Silex has a similar positioning:
instead of optical interconnects, it owns a key layer of advanced sensor and MEMS manufacturing capability.

The market often massively rerates companies once investors realize:

2. Silex has one of the most valuable business models in semiconductors: the foundry model

This is probably the single most important point.

Silex is not mainly betting on one product.

It is a pure-play MEMS foundry. 

That means customers design chips and Silex manufactures them.

This is strategically similar to why:

• TSMC became one of the world’s most valuable semiconductor companies
• foundries often achieve stronger long-term defensibility than product-only chip companies

The advantages are enormous:

• customers become deeply integrated
• switching costs are very high
• manufacturing know-how compounds over time
• IP protection and process quality create moats
• scale advantages increase over time
• capacity becomes scarce during industry booms

Silex describes itself as:

That is an extremely powerful positioning if true at scale.

Sivers, meanwhile, is still largely valued on future expectations around photonics adoption and partnerships. 

Silex may eventually get a higher quality multiple because foundries often deserve structurally higher valuation durability than component vendors.

3. The barriers to entry are enormous

A lot of investors underestimate this.

Anyone can design a chip startup.

Very few companies can:

• manufacture advanced MEMS reliably
• maintain yield quality
• protect customer IP
• scale production
• operate advanced semiconductor fabs in Europe

Silex has spent roughly 25 years building this capability. 

This creates a classic asymmetric setup:

• if demand explodes, Silex already owns the infrastructure
• competitors cannot quickly replicate it

That is exactly the kind of setup markets aggressively rerate once institutional investors discover it.

4. Europe desperately wants semiconductor sovereignty

This is another major hidden tailwind.

Europe has become strategically dependent on Asian semiconductor manufacturing.

Companies with:

• advanced fabs
• European production
• specialized semiconductor processes

have become geopolitically important.

Silex has:

• Swedish manufacturing
• advanced semiconductor capability
• exposure to strategic industries

This may eventually attract:

• government support
• strategic partnerships
• premium valuations
• acquisition interest from larger global semiconductor players

The market increasingly values “strategic infrastructure” semiconductor assets.

5. The Sivers comparison is psychologically important

This part matters more than many investors realize.

Markets move on narratives.

Sivers created a new mental model in Sweden:

After Sivers ran over 1,500% in months, investors are now actively searching for:

• “the next Sivers”
• underfollowed semiconductor infrastructure companies
• AI-adjacent hardware plays
• companies with asymmetric upside narratives

Silex fits that pattern extremely well:

• Swedish
• advanced semiconductors
• high-tech manufacturing
• global niche leadership
• AI exposure
• scarce asset
• misunderstood by general investors

That narrative similarity alone can attract massive speculative capital.

6. The IPO reaction may signal institutional scarcity

Silex’s debut was explosive:

• valuation jumped toward SEK 20 billion
• shares surged over 100% on debut

That kind of move often indicates:

• institutions wanted larger allocations
• float may be tight
• demand exceeded supply
• investors perceive strategic scarcity value

The exact same dynamic amplified Sivers.

When a stock has:

• strong narrative
• low float
• institutional demand
• retail momentum
• AI connection

moves can become nonlinear.

7. The strongest bull case: Silex could become “infrastructure for the infrastructure”

This is the deepest long-term thesis.

AI growth is not just about GPUs.

AI scaling requires:

• sensors
• precision manufacturing
• MEMS
• edge devices
• robotics
• autonomous systems
• medical diagnostics
• industrial automation

MEMS are becoming part of the physical-world interface layer for AI systems.

If AI expands into robotics and autonomous hardware at scale, MEMS demand could structurally accelerate for years.

That would potentially make Silex:

That is exactly the kind of narrative that can drive huge reratings.

But there are major risks too

A balanced analysis is important.

Silex could still fail to become “the next Sivers” because:

• the IPO valuation may already price in huge growth
• semiconductor cycles are volatile
• capacity expansion is expensive
• execution risk is real
• foundry margins can compress
• MEMS may not get the same hype premium photonics received
• market enthusiasm could cool quickly

And importantly:
Sivers itself has been criticized as partly narrative-driven and speculative. 

So investors should separate:

• industrial quality from
• short-term stock momentum.

Final conclusion

The reason many investors may start viewing Silex Microsystems as “the next Sivers Semiconductors” is because it combines:

• AI exposure
• semiconductor scarcity
• European strategic importance
• advanced manufacturing
• infrastructure positioning
• high barriers to entry
• strong growth trends
• limited listed peers
• strong narrative potential
• institutional ownership credibility from Bure and Creades

But the truly important distinction is this:

Sivers became a market phenomenon largely because investors suddenly realized photonics could become essential to AI datacenters.

Silex could potentially become even more strategically important if MEMS manufacturing becomes a critical enabling layer for the next wave of:

• robotics
• autonomous systems
• industrial AI
• edge intelligence
• smart sensing infrastructure.

That is the real long-term bull case.

DISCLAIMER: THIS IS NOT INVESTING ADVICE – DO YOUR OWN RESEARCH – THIS IS JUST MY POINT OF VIEW.