Microsoft's stock ($MSFT) has surged to new all-time highs, reaching $377.10, up nearly 50% in the last 6 months. Following a 4am ET announcement, the stock went from down 1.2% to up 2.7%. It also gained as much as 2% to notch an intraday record high. The shares have consistently been at all-time highs, reflecting strong market performance.