Investors in Rigetti Computing (NASDAQ: RGTI) learned this the hard way. Shares in the quantum computing start-up are down by an eye-popping 60% from their all-time high of $56 reached in October.

Quantum Computing is not making material revenue. The company is receiving orders for its devices, making progress in its technology. At this point, QCi seems to offer a binary outcome for investors.

Quantum computing stocks have soared in recent years based on hype, and Rigetti Computing is no exception. Quantum computing could revolutionize a host of industries, but the technology is quite a few ...

Microsoft and Alphabet have resources that quantum computing pure-plays could only dream about. Nvidia has launched a device that allows for a hybrid quantum computing approach. All three of these ...