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Quantum Computing, Inc. (QUBT) institutional ownership

Market cap$1.2B SectorTechnology
Funds holding · Q1 2026
268
reported QUBT position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
152 buyers · 116 sellers

Quantum Computing, Inc. (QUBT) price and institutional activity

Dates

Q1 2026

$0 bought by 152 investors
Defiance Etfs, LLCHrt Financial LP +150 more
$0 sold by 116 investors
Marex Group PLCSusquehanna International Group, LLP +114 more
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Bought Sold Totals per quarter; hover a bar for the names.

Quantum Computing, Inc. (QUBT) institutional activity · 268

Investor Type Est. change Change Δ Own Date
Marex Group PLC · Reduced
Change −3.8M Date Q1 2026
Marex Group PLC Reduced· Q1 2026 −3.8M Q1 2026
Susquehanna International Group, LLP · Reduced
Change −1.5M Date Q1 2026
Susquehanna International Group, LLP Reduced· Q1 2026 −1.5M Q1 2026
Citadel Advisors LLC Reduced· Q1 2026 −1.5M −63.9% Q1 2026
Defiance Etfs, LLC · Added
Change +1.3M Date Q1 2026
Defiance Etfs, LLC Added· Q1 2026 +1.3M Q1 2026
Hrt Financial LP · New
Change +1.3M Date Q1 2026
Hrt Financial LP New· Q1 2026 +1.3M Q1 2026
Barclays PLC · Reduced
Change −1.1M Date Q1 2026
Barclays PLC Reduced· Q1 2026 −1.1M Q1 2026
Ameriprise Financial Inc · Reduced
Change −1.0M Date Q1 2026
Ameriprise Financial Inc Reduced· Q1 2026 −1.0M Q1 2026
Canada Pension Plan Investment Board · Exited
Change −1.0M Δ Own −100.0% Date Q1 2026
Canada Pension Plan Investment Board Exited· Q1 2026 −1.0M −100.0% Q1 2026
Morgan Stanley · Added
Change +991K Date Q1 2026
Morgan Stanley Added· Q1 2026 +991K Q1 2026
Mirae Asset Global Etfs Holdings Ltd. · Added
Change +975K Date Q1 2026
Mirae Asset Global Etfs Holdings Ltd. Added· Q1 2026 +975K Q1 2026
Engineers Gate Manager LP · New
Change +659K Date Q1 2026
Engineers Gate Manager LP New· Q1 2026 +659K Q1 2026
Jupiter Asset Management Ltd · Exited
Change −638K Δ Own −100.0% Date Q1 2026
Jupiter Asset Management Ltd Exited· Q1 2026 −638K −100.0% Q1 2026
D. E. Shaw & Co., Inc. · Added
Change +581K Δ Own +424.9% Date Q1 2026
D. E. Shaw & Co., Inc. Added· Q1 2026 +581K +424.9% Q1 2026
Capital Fund Management S.A. · Reduced
Change −552K Date Q1 2026
Capital Fund Management S.A. Reduced· Q1 2026 −552K Q1 2026
Renaissance Technologies LLC Added· Q1 2026 +532K +393.8% Q1 2026
Data through Q1 2026 · filed Jun 3, 2026
15 of 268

Famous investor activity in Quantum Computing, Inc. (QUBT)

Quantum Computing, Inc. (QUBT) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Huang Yuping · Director 2 operations 82K
Owned 438K Trade date May 28, 2026 Filed date Jun 1, 2026
Huang Yuping Director 2 operations 82K 438K May 28, 2026 Jun 1, 2026
Dianat Pouya · Officer 2 operations 35K
Owned 47K Trade date May 28, 2026 Filed date Jun 1, 2026
Dianat Pouya Officer 2 operations 35K 47K May 28, 2026 Jun 1, 2026
Begliarbekov Milan · Officer 2 operations 35K
Owned 268K Trade date May 28, 2026 Filed date Jun 1, 2026
Begliarbekov Milan Officer 2 operations 35K 268K May 28, 2026 Jun 1, 2026
Weimer Carl Scott · Director Grant (A) $150K
Price $6.78 Qty 22K Owned 22K Trade date Apr 13, 2026 Filed date Apr 14, 2026
Weimer Carl Scott Director Grant (A) $6.78 22K $150K 22K Apr 13, 2026 Apr 14, 2026
Turmelle Michael C. · Director Grant (A) $150K
Price $6.78 Qty 22K Owned 22K Trade date Apr 13, 2026 Filed date Apr 14, 2026
Turmelle Michael C. Director Grant (A) $6.78 22K $150K 22K Apr 13, 2026 Apr 14, 2026
Shabani Javad · Director Grant (A) $150K
Price $6.78 Qty 22K Owned 22K Trade date Apr 13, 2026 Filed date Apr 14, 2026
Shabani Javad Director Grant (A) $6.78 22K $150K 22K Apr 13, 2026 Apr 14, 2026
Schwartz Eric Mark · Director Grant (A) $150K
Price $6.78 Qty 22K Owned 22K Trade date Apr 13, 2026 Filed date Apr 14, 2026
Schwartz Eric Mark Director Grant (A) $6.78 22K $150K 22K Apr 13, 2026 Apr 14, 2026
Fagenson Robert B. · Director Grant (A) $150K
Price $6.78 Qty 22K Owned 22K Trade date Apr 13, 2026 Filed date Apr 14, 2026
Fagenson Robert B. Director Grant (A) $6.78 22K $150K 22K Apr 13, 2026 Apr 14, 2026
Roberts Christopher Bruce · Officer Sell −$73K
Price $7.85 Qty −9K Owned 1.1M Trade date Mar 11, 2026 Filed date Mar 11, 2026
Roberts Christopher Bruce Officer Sell $7.85 −9K −$73K 1.1M Mar 11, 2026 Mar 11, 2026
Roberts Christopher Bruce · Officer Sell −$541K
Price $7.85 Qty −69K Owned 1.1M Trade date Mar 10, 2026 Filed date Mar 11, 2026
Roberts Christopher Bruce Officer Sell $7.85 −69K −$541K 1.1M Mar 10, 2026 Mar 11, 2026
Roberts Christopher Bruce · Officer 2 operations 0
Price $6.85 Owned 300K Trade date Mar 10, 2026 Filed date Mar 11, 2026
Roberts Christopher Bruce Officer 2 operations $6.85 0 300K Mar 10, 2026 Mar 11, 2026
Begliarbekov Milan · Officer Sell −$34K
Price $11.85 Qty −3K Owned 24K Trade date Jan 7, 2026 Filed date Jan 12, 2026
Begliarbekov Milan Officer Sell $11.85 −3K −$34K 24K Jan 7, 2026 Jan 12, 2026
Begliarbekov Milan · Officer Grant (A) $139K
Price $10.26 Qty 14K Owned 27K Trade date Dec 31, 2025 Filed date Jan 12, 2026
Begliarbekov Milan Officer Grant (A) $10.26 14K $139K 27K Dec 31, 2025 Jan 12, 2026
Fagenson Robert B. · Director Sell −$84K
Price $16.88 Qty −5K Owned 0 Trade date Sep 15, 2025 Filed date Sep 17, 2025
Fagenson Robert B. Director Sell $16.88 −5K −$84K 0 Sep 15, 2025 Sep 17, 2025
Huang Yuping · Director, Officer, 10% Owner Gift (G) -400K
Owned 20.9M Trade date Sep 12, 2025 Filed date Sep 17, 2025
Huang Yuping Director, Officer, 10% Owner Gift (G) -400K 20.9M Sep 12, 2025 Sep 17, 2025
15 of 27
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Quantum Computing, Inc. (QUBT) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Citadel Advisors LLC 5.8M
% of shares outstanding 3.1% Filing date Oct 2, 2025
Citadel Advisors LLC 5.8M 3.1% Oct 2, 2025
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Quantum Computing, Inc. (QUBT) ownership FAQ

Who owns QUBT?

268 reporting institutions disclosed QUBT position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.