According to Nikkei BioTechnology ONLINE's weekly stock price report, as of the 21 August 2026 close, 39 stocks had risen and 18 had fallen from the previous week. The top gainers were カルナバイオサイエンス, Heartseed and ラクオリア創薬, while the biggest decliners were アンジェス, シンバイオ製薬 and ジーエヌアイグループ.
This report provides a weekly tally of Japanese biotech venture stocks, including a breakdown of the number of stocks whose 21 August closing prices rose or fell from their 14 August closing prices. There were 39 gainers and 18 decliners.
Among the gainers, カルナバイオサイエンス led with a gain of +21.8%, followed by Heartseed at +14.9% and ラクオリア創薬 at +10.4%. デ・ウエスタン・セラピテクス研究所 and イノバセル were also among the stocks that showed solid performance.
Among the decliners, アンジェス fell 22.0%, シンバイオ製薬 fell 8.5% and ジーエヌアイグループ fell 5.1%, representing relatively large declines based on the comparison of closing prices on the two dates.
The published list shows the stocks ranked by name, with their closing prices on 14 August and 21 August and their percentage changes.