Blog

DEEP RESEARCH · PHILOPTICS

Philoptics Addition Memo: Glass Substrates and Silicon Photonics Exposure

A record of diversifying in semiconductor materials, parts, and equipment while keeping exposure to glass substrates and silicon photonics

Written: 2025-01-03 · Stock addition memo · Naver Blog

Investment decisions are your own responsibility. This material is research and is not a recommendation to buy or sell.

0. Bottom line first

Semiconductor materials, parts, and equipment are not an area I know deeply, so I decided to diversify. Still, I believe silicon photonics and glass-substrate-related names are themes I should hold, so I added Philoptics.

This post is less a detailed earnings analysis of Philoptics itself and more a portfolio memo tying together the semiconductor materials/equipment themes I am watching and the related names I have been adding.

1. Why I added Philoptics

Interpretation: Because I do not know every company in semiconductor materials and equipment deeply, I chose a diversified approach within the related themes rather than relying too heavily on one stock.

Diversified approach to semiconductor materials/equipmentUse diversification in areas I know less well
Silicon photonicsInter-chip bottlenecks and speed innovation
Glass substratesNext-generation semiconductor substrate theme
PhilopticsAdded as a related name
Secure exposure to key themes while approaching the sector through diversification.

2. Silicon photonics study

For silicon photonics, I refer back to an earlier study note. In the source memo, I summarized the idea that inter-chip connections are always a bottleneck and that innovation in this technology can determine semiconductor speed, so it deserves study.

Semiconductors: studying optical semiconductors (silicon photonics)

Link card for studying optical semiconductors and silicon photonics

3. Materials/equipment names added since last December

This Philoptics addition sits within a broader pattern of increasing exposure to semiconductor materials, parts, and equipment since last December.

HPSP

Added during a downturn

HPSP: stock added during this downturn

K&J

Investment company added during a downturn

K&J: investment company added during a downturn

Philoptics

Glass substrates and silicon photonics

The related name newly added in this post.

Link card for adding HPSP during a downturn Link card for adding K&J during a downturn

4. My portfolio lens

  • Because semiconductor materials and equipment are outside my strongest area, I approach them with diversification.
  • Silicon photonics and glass substrates are themes I believe are worth holding.
  • Philoptics was added to gain exposure to those themes.
  • I had already been adding related names such as HPSP and K&J during market weakness.

Sources

Naver original