Pre-market: BIT.AX Biotron Limited ASX -33.33% to A$0.002 on 18 Mar 2026: catalyst check

The BIT.AX stock opened the pre-market session on 18 Mar 2026 after a sharp pullback, trading at A$0.002 and down 33.33% from the prior close on heavy activity. Volume stood at 1,442,534.00 shares, pushing Biotron Limited (BIT.AX) onto the ASX top losers list in the Healthcare sector. Investors are watching catalyst timing for the antiviral candidate BIT225 and near-term funding signals that explain the move.