CompanyT4
Sumiseki Holdings
kabushiki gaisha
住石ホールディングス株式会社 は、東京都港区に本社を置く日本の企業（持株会社）で、住友グループの鉱業事業の会社を統括する。株式会社麻生の連結子会社で、麻生グループの一員。
Source: Wikipedia · CC BY-SA 4.0
last observed
Activity Score
0
confidence 70 % · metrics-v1
Hiring Momentum 30d
—
not enough monitored evidence
Product Velocity
—
not enough monitored evidence
AI Adoption
0
confidence 60 % · metrics-v1
Corporate Change Index
0
confidence 55 % · cci-v1
5 active sensors·4 observations·0 historical changes·0 structured events·historical coverage 93 %·observed since 2026-09-14
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