2B4.F stock up 23.38% to €21.16 on XETRA (15 Jan 2026): catalyst and outlook

Bonesupport Holding AB (publ) (2B4.F) surged 23.38% to €21.16 on XETRA on 15 Jan 2026. The move makes 2B4.F stock one of today’s top gainers on the Germany market. Volume was light at 15 shares traded versus a 50-day average of 84. Investors reacted to mixed fundamentals, tight liquidity, and short-term technical momentum.