Weekly report on share prices of listed Japanese biotech startups. Based on closing prices on 30 October 2026, Oncolys, Heartseed and Cuorips gained, while Japan Tissue Engineering, GNI Group and PhoenixBio declined.
According to the weekly roundup by Nikkei Biotechnology ONLINE of share-price movements among Japanese biotech startups, 20 stocks gained and 32 declined from the previous weekend's close as of 30 October.
The top 3 gainers were Oncolys BioPharma, up 27.5%, Heartseed, up 12.6%, and Cuorips, up 9.3%, each posting a substantial increase from the previous weekend's close.
The largest decliners were Japan Tissue Engineering, down 14.1%, GNI Group, down 13.6%, and PhoenixBio, down 10.9%, making it a week in which declines stood out overall.
The article uses a format that tracks daily share-price movements, together with rankings from the table included in the report.