Miyairi Valve (6495.T) JPX up 31.78% to JPY311.00 intraday: volume signals momentum

6495.T stock jumped 31.78% intraday to JPY311.00 on JPX on 19 Feb 2026, led by a volume surge of 7,482,600 shares. The move followed a gap open at JPY282.00 and a day high of JPY334.00, far above the prior close of JPY236.00. Traders cite heavy buying and short-covering as drivers. We track price action, valuation, and technicals to explain the top-gainer performance and what it means for near-term trading.