On Tuesday, shares of Quantum Computing Inc. $QUBT climbed by 4.2%, having previously spiked as much as 22.7% intraday, driven by renewed investor enthusiasm in the quantum technology space. The surge came as broader indices — notably the S&P 500 $^SPX and Nasdaq Composite $^IXIC — posted modest gains, providing a favorable backdrop for tech-centric and speculative assets.