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| Platform |  | Pricing | Freemium | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 57 | Founded | 2 years ago | Last Issue | 12 days ago |
| Active | |||||
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stfbutnou.substack.comLatest Issues
Seikoh Giken: Capacity Is the Confession
SG’s results were excellent. However the earnings beat itself is not the most interesting part. Revenue grew 50.6%. Operating profit grew 174.5%. Optical products revenue grew 86.6%, and the optical products segment delivered a 33.1% operat...
Uyemura: Another Invisible Beneficiary Behind Every Substrate
We find C. Uyemura & Co (4966 JP) interesting and we believe the company holds approximately 70% of the Taiwanese ENEPIG and ENIG final surface treatment market. They spent 170 years building a technical moat its competitors cannot replicat...
Investor Memo: Keep a Fresh Mind at the Party
If you read my last Investor Memo, I mentioned I was trying to maintain a more disciplined schedule of deep-dives and portfolio reviews. March's events, however, were intense enough that waiting another month felt like a mistake. I ended up...
Furuya Metal: Selling the World's Scarcest Metals
Furuya Metal is the world's largest industrial processor and recycler of iridium and ruthenium, with a product portfolio spanning crucibles, sputtering targets, thermocouple sensors, and precision chemical compounds. We will explore how the...
Macronix: Uncovering Alpha Beyond the Slides
TLDR: We attended the Macronix Q1 2026 earnings conference call and found several essential takeaways beyond the official presentation slide that are definitely worth your attention.
TLDR: We attended the Macronix Q1 2026 earnings conferen...
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