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Quantum Computing Inc. · 13F filings

QUBT Institutional Ownership

Holdings as of Jun 30, 2026From SEC Form 13FUpdated

Who owns Quantum Computing Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 316 funds reported holding QUBT at Jun 30, 2026, together owning 45.5% of the company.

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Fund sentiment
Bullish
Strongly bearishNeutralStrongly bullish
  • ▲192 buying vs 105 selling
  • ▲Held by funds +4.4 pts
  • ▲Funds holding +18
  • ▼Superinvestors: 1 added, 2 cut
  • ●Put/call not meaningful

What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.

Funds holding316+18 vs Q1 2026
Held by funds45.5%+4.4 pts
Value held$996M103M shares
Put/call ratio3.10up from 1.21

Funds holding and ownership

8 quarters
Q3 2024: 34 fundsQ3 '24Q4 2024: 127 fundsQ4 '24Q1 2025: 168 fundsQ1 '25Q2 2025: 225 fundsQ2 '25Q3 2025: 261 fundsQ3 '25Q4 2025: 289 fundsQ4 '25Q1 2026: 298 fundsQ1 '26Q2 2026: 316 fundsQ2 '2645.5% owned
Funds holdingHeld by funds %

Quarter over quarter

all 13F filers
Q2 2026This quarterQ1 2026Change
Funds holding316298+6.0%
In funds' top 1000–
13F shares103M93.1M+10.6%
Held by funds45.5%41.1%+4.4 pts
New positions6452+23.1%
Increased128102+25.5%
Reduced6176−19.7%
Sold out4445−2.2%
Calls (shares)1.2M1.6M−23.9%
Puts (shares)2.4M1.8M+32.0%
Put/call ratio3.101.21+155.8%

Buyers vs sellers

adding or new vs cutting or sold out
Q4 2024: 109 buyingQ4 2024: 13 sellingQ4 '24Q1 2025: 130 buyingQ1 2025: 54 sellingQ1 '25Q2 2025: 172 buyingQ2 2025: 58 sellingQ2 '25Q3 2025: 182 buyingQ3 2025: 87 sellingQ3 '25Q4 2025: 203 buyingQ4 2025: 100 sellingQ4 '25Q1 2026: 154 buyingQ1 2026: 121 sellingQ1 '26Q2 2026: 192 buyingQ2 2026: 105 sellingQ2 '26
Buying 192Selling 105latest quarter

Superinvestors in QUBT

All superinvestors →

Who owns QUBT

share of fund held shares
  • Index and passive funds48.6%
  • Active managers and hedge funds34.6%
  • Banks and brokers16.0%
  • Pensions, insurers and other0.9%

The top 10 holders own 63.4% of all QUBT shares that funds reported. Groups are our own grouping of filers by name.

Put/call ratio

funds' options, market makers left out
1.00Q4 2024: 5.49Q4 '24Q1 2025: 0.26Q1 '25Q2 2025: 4.85Q2 '25Q3 2025: 11.01Q3 '25Q4 2025: 0.99Q4 '25Q1 2026: 1.21Q1 '26Q2 2026: 3.10Q2 '263.10

Above 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.

Filed so far for Q3 2026

81 funds changed their position

🔒 Free account: see all 20.

Top holders

Q2 2026
#FundOf companySharesValueChange
1BlackRock, Inc.7.83%17.7M$172M+1.6M
2Vanguard Capital Management LLC3.91%8.8M$85.8M+87K
3Defiance ETFs, LLC3.11%7M$66.3M+2.5M
4Penserra Capital Management LLC3.08%7M$67.7M+3.6M
5Vanguard Portfolio Management LLC2.90%6.6M$63.7M−144K
6Geode Capital Management, LLC2.35%5.3M$51.6M+622K
7State Street Corp2.17%4.9M$47.7M+404K
8Morgan Stanley1.45%3.3M$31.9M+971K
9Marex Group Ltd1.02%2.3M$22.3M−2.2M
10MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.1.00%2.3M$22.1M+69K
🔒 15 more top holders. Create a free account or sign in to see them.
Biggest buyers
Biggest sellers

QUBT institutional ownership FAQ

Who owns the most QUBT stock?

In Q2 2026 13F filings the largest holder of QUBT was BlackRock, Inc., followed by Vanguard Capital Management LLC and Defiance ETFs, LLC. Index fund managers are usually the biggest holders of large companies.

What percentage of QUBT is owned by institutions?

Funds that file 13F reports held 45.5% of QUBT's shares at Jun 30, 2026, compared with 41.1% a quarter earlier. That counts every manager with more than $100 million in US stocks.

Are hedge funds buying QUBT?

In Q2 2026, 192 funds bought QUBT (64 of them new positions) and 105 sold (44 sold out completely). Among well known investors, 1 added and 2 cut. Our fund sentiment for QUBT is bullish.

What is QUBT's institutional put/call ratio?

Funds reported $37M of QUBT puts against $11.9M of calls, a put/call ratio of 3.10 (1.21 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.

How current is this QUBT ownership data?

13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.

For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.