IonQ Just Announced a Major Breakthrough. Should Investors Buy the Stock Now?

IonQ announced a breakthrough in quantum error correction with its first end-to-end, real-time quantum error-correction decoder running on a standard CPU. The stock rose 11% following the announcement and a partnership with Nvidia's Accelerated Quantum Research Center. However, the company remains unprofitable with a rich valuation, and the decoder was only validated on simulated data. The stock has fallen 40% over the past year, making it a high-risk, speculative investment suitable only for long-term investors.