No. 372South Korea
Seo Jung-jin
Biotech · Seoul
Net worth
$9.7B
Today
+$198M+2.09%Past month
+$1.3B+16.18%As of Nov 11, 2026, 1:50 PM EST
Seo Jung-jin is cofounder of Celltrion, a biopharmaceutical firm that makes drugs to treat cancer, influenza and rheumatoid arthritis, among others. With the success of biosimilars in South Korea, his Celltrion has become a favorite among investors. In 2023, Seo returned as chairman of his Celltrion group, two years after stepping down from the role, and pledged to make major acquisitions. Seo's eldest son Jin-seok is cochairman of Celltrion Inc. Seo started Celltrion Inc. in 2002 and took it public in 2008.
Net worth over time
+16.18%+$1.3B over the past month
$10B$9B$8B
Oct 12Nov 11
Principal holdings
1 positions| Company | Industry | Share | Value |
|---|---|---|---|
Celltrion Inc. KOREA: 068270-KR | Healthcare | 100.0% | $9.7B |
Also known for
- Seo is a former employee of Samsung Electro-Mechanics.