D-Wave Quantum shares fell 8.73% to $17.67 Wednesday after the company disclosed that Chief Financial Officer John Markovich will retire effective Sept. 2. Rival IonQ declined 3% to $40.68, while the Defiance Quantum ETF slipped 0.4% to $148.27 and the SPDR S&P 500 ETF Trust held flat at $765.57, indicating that the selling was concentrated in individual quantum-computing stocks rather than the broader market. Greg Golkov, D-Wave's senior vice president of Finance since May 2023, will become acting CFO and principal accounting officer. D-Wave said Markovich's departure was solely a retirement and did not result from disagreements over operations, financial statements, accounting practices or internal controls. CEO Alan Baratz credited Markovich with helping take D-Wave public in 2022, raise more than $900 million in capital and improve its financial performance while developing a path toward profitability. The transition comes as D-Wave shares were already down 26% year to date through Tuesday's close and after its Q2 2026 results missed expectations, although bookings and backlog strengthened. Analysts retain a Strong Buy consensus based on 15 Buy ratings and one Hold, with an average price target of $35.73 implying roughly 85% upside. Investors will focus on whether Golkov can sustain Markovich's fundraising momentum and whether the acting CFO appointment becomes permanent.