Quantum computing has quickly become one of the most popular technologies to invest in after artificial intelligence. Just take a look at the share price gains of some of the biggest names in the industry — IonQ, Rigetti Computing, and D-Wave, which are up 89%, 1,500%, and 1,800% over the past year, respectively. There’s good reason for some of the optimism. Quantum computing will eventually aid scientists in discovering new drugs, enhancing climate science, developing new materials, and refining artificial intelligence models. Estimates from BCG suggest that the potential economic value of quantum computing could reach $850 billion by 2040. However, there’s also a good reason to be a bit skeptical. With massive run-ups like these quantum computing stocks are experiencing — though IonQ’s is negligible in comparison — it’s a good time to remember that quantum computing is still in its very early stages. Here are two hurdles the industry needs to overcome before people start investing in quantum computing stocks.

Full commentary : Quantum computing isn’t quite ready for prime time, and high-flying companies are very unprofitable.