Dongjin Semichem
KRX:005290Structural picks-and-shovel position in the AI Semis supply chain, Layer 7. Tier C conviction with research from AI Master Research.
The full 1-page snapshot on Dongjin Semichem.
What it physically does · the financial print · customer mix · competitive context · terminal risk · bull case · gap/bear case · optionality · the trade. ~249 words. Source: AI Master Research.
What 005290 physically does — preview.
One-paragraph version of the Photoncap deep dive. Read the full essay for the complete treatment.
The thesis — preview.
**Live:** KRW 52,900 · **Earnings (last):** Reference 2026-05-13 release — last quarter NI KRW 66.9B (up from 31.1B); FY24 rev +7.5%, NI +21.6%; consensus n/a · **Next earnings:** none scheduled within 60d · **Conviction:** 4/10 Dongjin makes CMP slurries, photoresists and wet chemicals for Korean memory fabs — primarily SK Hynix and Samsung. The bottleneck adjacency is real: HBM stack height growth (8Hi → 12Hi → 16Hi) increases CMP steps per die and pushes specialty-chemistry consumption per wafer. Within Korea this gives Dongjin a structural tailwind. But Dongjin is also a textbook commodity-chemistry name — peer Soulbrain competes head-on in HF/etchants, and pricing concessions are routine when memory cycles roll.…