5255.T Monstar Lab (JPX) -16.28% pre-market 20 Feb 2026: monitor cash and debt levels

5255.T stock opened sharply lower in pre-market trade on 20 Feb 2026, falling 16.28% to JPY 108.00 on volume of 5,196,900.00 shares. We flag the move as the top loser on the JPX session because trading volume ran 3.55x the average. The drop followed weak near-term signals in liquidity and earnings metrics, and it widens the gap to the 50-day average of JPY 170.30.