CHF 0.0012: OBSN.SW ObsEva S.A. (SIX) at close 22 Jan 2026: most-active stock insight

OBSN.SW stock closed at CHF 0.0012 on 22 Jan 2026 after a steep intraday fall, making ObsEva S.A. one of the most active names on the SIX market. Heavy volume of 2,351,202 shares drove the move, well above the average volume 675,842. The drop widened the gap vs the 50-day average CHF 0.015 and the 200-day average CHF 0.044, and it raises short-term liquidity and valuation questions for this Geneva biotech.