Shares of Quantum Computing Inc. (QUBT) took a sharp 5% dive during Wednesday's trading session, as investors reassess the valuation of quantum computing stocks. This decline comes amid broader concerns about the sustainability of the recent surge in quantum computing pure-play stocks.

The plummet aligns with a recent analysis highlighting four significant risks facing quantum computing companies, including QUBT. These risks include historical patterns of early-stage innovation bubbles, potential shareholder dilution due to capital-raising needs, unsustainable valuations, and competition from deep-pocketed tech giants.

Particularly noteworthy is the concern over QUBT's valuation. The stock's price-to-sales ratio stands at a staggering 8,965 on a trailing 12-month basis, far exceeding historical norms for sustainable valuations in the tech sector. This extreme valuation, coupled with ongoing operating losses, may be prompting investors to reconsider their positions in the stock.