10 Feb 2026 CHF0.0012 ObsEva (OBSN.SW) SIX Pre-Market Most Active: 2.35M shares signal volatility

OBSN.SW stock opened in the SIX pre-market at CHF0.0012, down 76.92% from the previous close. Trading is heavy with 2,351,202 shares changing hands versus an average of 675,842, making ObsEva S.A. one of the most active names on the board today. Intraday swings reflect a sharp sell-off from the open CHF0.0050 and a year high gap at CHF0.085. We flag this as a high-volatility biotech move tied to liquidity and pipeline news, and we explain key metrics and the short-term outlook below.