SCHEDULE: Citadel Entities Disclose 4.9% Stake in Quantum Computing Inc.

Citadel Advisors and affiliated entities, including Kenneth Griffin, have disclosed a combined beneficial ownership of 4.9% in Quantum Computing Inc. common stock.

Summary

• Citadel Advisors LLC, Citadel Advisors Holdings LP, and Citadel GP LLC collectively beneficially own 5,828,555 shares, representing 3.1% of Quantum Computing Inc.'s common stock.
• Citadel Securities LLC beneficially owns 2,827,051 shares, accounting for 1.5% of the outstanding common stock.
• Citadel Securities Group LP and Citadel Securities GP LLC collectively beneficially own 3,416,384 shares, representing 1.8% of the outstanding common stock.
• Kenneth Griffin, through his control over the various Citadel entities, is deemed to beneficially own an aggregate of 9,244,939 shares, which constitutes 4.9% of the common stock.
• The percentages are based on 186,872,402 shares outstanding as of September 29, 2025, as reported in the issuer's Form S-3 filed on October 1, 2025.
• All reporting persons hold shared voting and dispositive power over their respective beneficially owned shares, with no sole voting or dispositive power.

Sentiment

Score: 6

Explanation: The disclosure of a significant passive stake by a prominent institutional investor like Citadel could be viewed as a neutral to slightly positive signal, indicating institutional interest in Quantum Computing Inc. It does not, however, provide operational or financial performance data.

Positives

• A prominent institutional investor like Citadel and its affiliates taking a significant stake in Quantum Computing Inc. could signal increased institutional interest and potential confidence in the company's long-term prospects.

Future Outlook

NA

Industry Context

Citadel is a prominent global financial institution known for its hedge fund and market-making activities. Their disclosure of a significant, albeit passive, stake in Quantum Computing Inc. highlights growing institutional interest in the nascent and high-potential quantum computing sector. This investment could be seen as a strategic positioning in a technology expected to have transformative impacts across various industries.

Stakeholder Impact

• Shareholders may perceive the investment by a major institutional player like Citadel as a positive indicator, potentially boosting confidence in the company's stock.

Key Dates

Recommendation

The filing indicates a significant passive stake by a major institutional investor, Citadel, and its affiliates. While this suggests institutional interest in Quantum Computing Inc., the Schedule 13G itself does not provide operational or financial performance data to warrant a stronger recommendation. It primarily serves as a disclosure of ownership, suggesting a 'hold' position to observe future developments and company performance.

Keywords

Quantum Computing, Citadel, Institutional Ownership, SEC Filing, Schedule 13G, Common Stock, Investment, Beneficial Ownership