Quantum computing stocks face scrutiny as insiders sell $840M–$931M in shares

The quantum computing hype cycle has a math problem. Insiders at the sector’s biggest publicly traded names have collectively sold somewhere between $840M and $931M worth of shares over a multi-year period running into mid-2026, and they’ve bought back almost nothing. That asymmetry is the kind of signal that tends to travel slowly through financial media but lands hard when investors eventually notice it. The four companies at the center of the story: IonQ (IONQ), Rigetti Computing (RGTI), D-Wave Quantum (QBTS), and Quantum Computing Inc. (QUBT). Together they represent the publicly traded face of an industry that has attracted enormous speculative interest, government funding, and some genuinely impressive scientific progress. The numbers doing the heavy lifting D-Wave CEO Alan Baratz sold roughly $18M in company shares in June 2026 alone. IonQ directors have executed a string of individual sales ranging from $100K to $200K each in the same period. Quantum Computing Inc. adds tens of millions more to the aggregate tally, though it remains the smallest name in this cohort by market presence. Some of these transactions are structural rather than discretionary. Many insider sales at...