4890.T Tsubota Laboratory (JPX) up 13.86% pre-market 12 Mar 2026: volume surge
4890.T stock opened the pre-market session sharply higher on 12 Mar 2026, trading at JPY 345.00 after a 13.86% jump and a volume spike to 4,013,500.00 shares. The move follows heavy intraday activity versus an average volume of 87,900.00 shares. We track price action on the JPX and connect it to news flow, sector tone and short-term signals to assess if this rally can extend into the regular session.
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