Quantum computing stock Rigetti Computing Inc (NASDAQ:RGTI), like much of the upstart sector, has exploded onto the scene in the last year, racking up a 1,070% 12-month gain. The shares have lost steam somewhat in 2025,

As the promise of quantum computing inches closer to commercial reality, investors continue to hunt for early-stage opportunities in the space—especially through speculative plays like quantum computing penny stocks. While the mainstream spotlight remains on giants like IBM and Alphabet, several lesser-known names have seen major moves in 2025.