The hidden hand

The photoresist maker that purifies cancer drugs

Japan nationalized JSR Corporation to keep control of a company that simultaneously dominates two unrelated but critical technology supply chains.

The number

6.5billion dollars, enterprise value

Producer

Producer · JSR Corporation

JSR Corporation (Tokyo; formerly JASDAQ/TSE: 4185; now private after delisting following Japan Investment Corporation nationalization in 2023) is Japan's leading life science materials company and manufacturer of Amsphere A3 Protein A affinity resin — one of the fastest-growing Protein A resin brands. JSR's Amsphere A3 uses a novel polymer bead architecture (highly cross-linked polymethacrylate) with proprietary recombinant Protein A ligand — designed for high dynamic binding capacity and long resin lifetime. In April 2023, the Japanese government's sovereign industrial fund INCJ (Innovation Network Corporation of Japan, now JIC) acquired a majority stake in JSR Corporation and took it private — an extraordinary step justified by JSR's dual strategic importance in semiconductor photoresists (JSR is the world's #2 photoresist producer, supplying TSMC and Samsung) and bioprocess materials (Amsphere A3). Japan explicitly nationalized JSR to prevent acquisition by non-Japanese parties and to secure domestic control of critical semiconductor and bioprocess supply chains — a template for strategic industry policy that no other major economy had applied to a life science materials company.

Surprise score

92 / 100

JSR is the world's #2 photoresist supplier to TSMC, Samsung, and Intel — defining chip geometry at the cutting edge — while also producing Protein A resins that purify monoclonal antibodies for Roche. Japan's government seized the company to prevent foreign ownership of what it deemed an unacceptable concentration of dual-use critical technology risk.

Source: Planned commencement of tender offer for JSR Corporation · Japan Investment Corporation (JIC Capital) · Jun 26, 2023

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The photoresist maker that purifies cancer drugs

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