AMBQ is trading at $84.68 (5.65% up) today, a move occurring amid a broad market rebound and notable company-specific news. - The company has been removed from the Russell Microcap Value Benchmark Index today. - This comes as a risk-on session features the S&P 500 up 1.58% and NASDAQ up 2.23%, with positive sentiment lifting the major indices. - Shares are trading near recent highs, showing strength above the previous intraday range of $78.73–$82.70 as momentum carries the stock higher in the current session.