Micron Technology, Inc. (MU) rose 5.52% on Friday, September 18, 2026, closing at $977.52 per share. The single-session advance lifted the semiconductor company's market capitalization to $1,046.44 billion.
Despite the strong daily performance, the stock's seven-day change remained slightly negative at -0.25%, indicating that earlier weakness in the week had offset some of the session's gains. Over the past 30 days, however, shares have climbed 3.83%, reflecting a broader upward trend across that period.
Micron's move above the $977 level on elevated single-day volume underscores the stock's continued volatility within what has otherwise been a modestly positive monthly trading range. The company remains one of the largest semiconductor manufacturers by market capitalization.
