QUBT · Quantum Computing Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding QUBT
All superinvestors →Holder Concentration
Across 320 13F filersWho Holds QUBT
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 313 filers, like-for-like change +10.7%; actively managed books +10.1%; index-like books +11.3%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 42.6% | 166 | +15.5% |
| Exempt adviser | 0.2% | 3 | +345.7% |
| Adviser | 0.7% | 6 | -5.2% |
| Bank | 13.7% | 17 | +41.6% |
| Insurer | 0.0% | 1 | -24.9% |
| Broker-dealer | 0.5% | 2 | +8.4% |
| Benefit plan | 0.3% | 3 | -8.0% |
| Non-US | 1.8% | 9 | +95.6% |
| Holding company | 21.3% | 8 | +12.3% |
| Unknown | 18.8% | 98 | -15.3% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 48.5% | 31 | +11.3% |
| Systematic-like | 3.5% | 13 | -32.9% |
| Concentrated | 4.3% | 61 | +17.8% |
| Diversified active | 43.6% | 208 | +15.4% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 51.3% | 186 | +15.0% |
| Medium turnover | 19.2% | 65 | +39.1% |
| High turnover | 4.5% | 31 | -54.4% |
| Unknown | 25.0% | 31 | +13.4% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 25.3% | 35 | +9.3% |
| Medium horizon | 26.8% | 68 | -3.3% |
| Long horizon | 45.1% | 196 | +30.0% |
| Unknown | 2.8% | 14 | -41.4% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 0.9% | 84 | -14.4% |
| $1B to $10B | 12.1% | 93 | +30.5% |
| $10B to $100B | 19.1% | 73 | -7.4% |
| $100B or more | 67.9% | 63 | +14.4% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 1.9% | 114 | +33.8% |
| Pooled investment vehicles | 1.7% | 12 | -56.9% |
| Registered funds and BDCs | 37.2% | 17 | +24.0% |
| Pension and profit sharing plans | 0.0% | 3 | +7.5% |
| Insurance companies | 0.2% | 3 | +9.1% |
| Charitable organizations | 0.0% | 1 | 0.0% |
| Governments and sovereign funds | 0.7% | 2 | +29.2% |
| Corporations | 0.0% | 1 | 0.0% |
| Other investment advisers | 0.1% | 5 | +2432.9% |
| Diversified | 0.8% | 8 | +12.6% |
| Unknown | 57.4% | 147 | +7.4% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 2.2% | 20 | -48.4% |
| Private equity funds | 0.4% | 10 | +9.6% |
| Venture capital funds | 0.0% | 2 | +170.6% |
| Real estate funds | 0.1% | 5 | +383.1% |
| Securitized asset funds | 0.3% | 1 | +28.3% |
| Other private funds | 1.2% | 9 | +26.7% |
| Mixed private funds | 0.3% | 2 | +31.5% |
| Private funds, type not stated | 1.3% | 3 | +35.4% |
| No private funds | 37.1% | 117 | +23.7% |
| Unknown | 57.2% | 144 | +7.1% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 86.3% | 262 | +12.4% |
| Outside the US | 13.7% | 51 | +1.2% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 3 holders with no observed 2026-03-31 13F and 4 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
313 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 38.7% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies QUBT's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | RGTI Rigetti Computing, Inc. | 11 |
| 2 | QBTS D-Wave Quantum Inc. | 12 |
| 3 | XNDU Xanadu Quantum Technologies Ltd | 4 |
| 4 | ARQQ Arqit Quantum Inc. | 3 |
| 5 | IONQ IonQ, Inc. | 12 |
| 6 | RDW Redwire Corp | 4 |
| 7 | USAR USA Rare Earth, Inc. | 5 |
| 8 | PL Planet Labs PBC | 6 |
| 9 | GME GameStop Corp. | 3 |
| 10 | LUNR Intuitive Machines, Inc. | 4 |
Shareholder Targets
13F filers that own its peers but not QUBT, quarter ended Jun 30, 2026Found through its holder-overlap peers: RGTI, QBTS, XNDU, ARQQ, IONQ, RDW, USAR, PL, GME, LUNR, ARM, ASTS, CRWV, INFQ, QNT, RKLB, SMR, ECHO, ONDS, MXL. 2,203 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Magnetar Financial LLC Registered adviser, Concentrated | $5,183,482,145 3 held | CRWV, RGTI, IONQ |
| 2 | NVIDIA CORP Unknown, Concentrated | $4,699,617,157 1 held | CRWV |
| 3 | Capital World Investors Adviser, Diversified active | $2,701,852,036 5 held | ARM, RKLB, QNT |
| 4 | Alphabet Inc. Unknown, Concentrated | $2,657,749,172 3 held | PL, ASTS, ARM |
| 5 | JANE STREET GROUP, LLC Unknown, Diversified active | $2,491,236,329 16 held | CRWV, ASTS, MXL |
| 6 | DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main Unknown, Diversified active | $2,331,653,476 9 held | ARM, ECHO, IONQ |
| 7 | NORGES BANK Non-US, Index-like | $2,154,265,503 12 held | RKLB, CRWV, ASTS |
| 8 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser, Diversified active | $1,641,556,658 6 held | ARM, PL, MXL |
| 9 | WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active | $1,454,218,639 10 held | ECHO, ARM, RKLB |
| 10 | Rakuten Group, Inc. Unknown, Concentrated | $1,378,225,531 1 held | ASTS |
Fund Ownership of QUBT by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 18.47% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 3.06% | 6,924,018 |
| Index ETFs | 15.42% | 34,891,360 |
| Active ETFs | 0.05% | 109,439 |
| Active funds | 1.07% | 2,428,994 |
| Unclassified | 0.06% | 131,074 |
| All registered funds | 19.65% | 44,484,885 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $172,019,550 | 13.81% | 17,733,975 | Shares | 2026-08-07 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $85,834,145 | 6.89% | 8,848,881 | Shares | 2026-08-13 | |
| Mega JANE STREET GROUP, LLC | $69,087,280 | 5.55% | 7,122,400 | Call | 2026-08-14 | |
| Mid Defiance ETFs, LLC Registered adviser | $68,224,077 | 5.48% | 7,033,410 | Shares | 2026-08-14 | |
| Large Penserra Capital Management LLC Registered adviser | $67,699,685 | 5.44% | 6,979,349 | Shares | 2026-08-13 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $63,695,845 | 5.11% | 6,566,582 | Shares | 2026-08-13 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $51,629,685 | 4.15% | 5,322,648 | Shares | 2026-08-12 | |
| Mega STATE STREET CORP Bank | $47,736,774 | 3.83% | 4,921,317 | Shares | 2026-09-22 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $43,193,130 | 3.47% | 4,452,900 | Call | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $39,996,010 | 3.21% | 4,123,300 | Put | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $31,932,503 | 2.56% | 3,292,011 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $24,133,600 | 1.94% | 2,488,000 | Call | 2026-09-02 | |
| Large Marex Group plc | $22,332,882 | 1.79% | 2,302,359 | Shares | 2026-08-14 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $22,043,569 | 1.77% | 2,272,533 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $19,838,438 | 1.59% | 2,045,200 | Shares | 2026-08-13 | |
| Mega Bank of New York Mellon Corp Bank | $19,164,259 | 1.54% | 1,975,697 | Shares | 2026-08-06 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $18,535,730 | 1.49% | 1,910,900 | Put | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $17,606,381 | 1.41% | 1,815,091 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $15,924,916 | 1.28% | 1,641,744 | Shares | 2026-08-14 | |
| Large Mubadala Investment Co PJSC | $15,397,295 | 1.24% | 1,587,350 | Shares | 2026-08-14 | |
| Large CAPITAL FUND MANAGEMENT S.A. | $14,600,372 | 1.17% | 1,505,193 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $14,594,620 | 1.17% | 1,504,600 | Put | 2026-09-02 | |
| Mega NATIONAL BANK OF CANADA /FI/ Bank | $14,144,889 | 1.14% | 1,458,236 | Shares | 2026-08-10 | |
| Large Clear Street Group Inc. | $13,851,590 | 1.11% | 1,427,999 | Shares | 2026-08-12 | |
| Mega VAN ECK ASSOCIATES CORP Registered adviser | $12,778,314 | 1.03% | 1,317,352 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $12,626,684 | 1.01% | 1,301,720 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $11,376,994 | 0.91% | 1,172,886 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $10,809,680 | 0.87% | 1,114,400 | Put | 2026-08-14 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $10,386,614 | 0.83% | 1,070,785 | Shares | 2026-08-13 | |
| Mega RAYMOND JAMES FINANCIAL INC | $10,065,291 | 0.81% | 1,037,659 | Shares | 2026-08-14 | |
| Large Parallax Volatility Advisers, L.P. Registered adviser | $9,846,470 | 0.79% | 1,015,100 | Put | 2026-08-14 | |
| Mid Pacific Heights Asset Management LLC | $9,700,000 | 0.78% | 1,000,000 | Shares | 2026-08-17 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $7,655,655 | 0.61% | 789,243 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $6,134,774 | 0.49% | 632,451 | Shares | 2026-08-11 | |
| Large Walleye Trading LLC | $5,875,290 | 0.47% | 605,700 | Put | 2026-08-03 | |
| Large Walleye Trading LLC | $5,718,150 | 0.46% | 589,500 | Call | 2026-08-03 | |
| Mega D. E. Shaw & Co., Inc. | $5,651,394 | 0.45% | 582,618 | Shares | 2026-08-14 | |
| Large Blackstone Inc. Adviser | $4,850,000 | 0.39% | 500,000 | Shares | 2026-08-14 | |
| Mid ALGERT GLOBAL LLC Registered adviser | $4,318,934 | 0.35% | 445,251 | Shares | 2026-08-13 | |
| Mega BARCLAYS PLC Bank | $3,922,010 | 0.31% | 404,331 | Shares | 2026-08-14 | |
| Large Squarepoint Ops LLC Registered adviser | $3,906,451 | 0.31% | 402,727 | Shares | 2026-08-14 | |
| Mega Swiss National Bank | $3,835,380 | 0.31% | 395,400 | Shares | 2026-08-11 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $3,761,775 | 0.30% | 387,812 | Shares | 2026-08-14 | |
| Mid LANDSCAPE CAPITAL MANAGEMENT, L.L.C. Registered adviser | $3,696,145 | 0.30% | 381,046 | Shares | 2026-08-12 | |
| Mega LPL Financial LLC Broker-dealer | $3,695,690 | 0.30% | 380,999 | Shares | 2026-08-07 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $3,490,069 | 0.28% | 359,801 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $3,115,986 | 0.25% | 321,236 | Shares | 2026-08-13 | |
| Mid UNICOM Systems, Inc. | $3,061,257 | 0.25% | 362,279 | Shares | 2026-10-13 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $2,669,682 | 0.21% | 275,225 | Shares | 2026-08-14 | |
| Large PEAK6 LLC Broker-dealer | $2,667,500 | 0.21% | 275,000 | Put | 2026-08-13 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $2,558,045 | 0.21% | 263,716 | Shares | 2026-08-12 | |
| Small Crawford Fund Management, LLC Registered adviser | $2,483,200 | 0.20% | 256,000 | Put | 2026-08-14 | |
| Mega CITIGROUP INC Bank | $2,458,794 | 0.20% | 253,484 | Shares | 2026-08-03 | |
| Large Point72 Asset Management, L.P. Registered adviser | $2,437,610 | 0.20% | 251,300 | Call | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $2,408,722 | 0.19% | 248,322 | Shares | 2026-08-14 | |
| Large CAPITAL FUND MANAGEMENT S.A. | $2,237,790 | 0.18% | 230,700 | Put | 2026-08-13 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $2,172,906 | 0.17% | 224,011 | Shares | 2026-08-24 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $2,126,744 | 0.17% | 219,252 | Shares | 2026-08-14 | |
| Mega DEUTSCHE BANK AG\ Non-US | $2,025,126 | 0.16% | 208,776 | Shares | 2026-08-07 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $1,806,954 | 0.15% | 186,284 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $1,787,737 | 0.14% | 184,303 | Shares | 2026-08-12 | |
| Mega ROYAL BANK OF CANADA Bank | $1,690,639 | 0.14% | 174,293 | Shares | 2026-08-14 | |
| Mid Foundations Investment Advisors, LLC Registered adviser | $1,672,541 | 0.13% | 172,427 | Shares | 2026-08-14 | |
| Small Headlands Technologies LLC | $1,502,539 | 0.12% | 154,901 | Shares | 2026-08-13 | |
| Large Brevan Howard Capital Management LP Exempt adviser | $1,490,201 | 0.12% | 153,629 | Shares | 2026-08-14 | |
| Large Quantinno Capital Management LP Registered adviser | $1,449,849 | 0.12% | 149,469 | Shares | 2026-08-13 | |
| Mega SG Americas Securities, LLC Non-US | $1,439,392 | 0.12% | 148,391 | Shares | 2026-08-07 | |
| Large Walleye Capital LLC Registered adviser | $1,432,690 | 0.12% | 147,700 | Call | 2026-08-03 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $1,344,690 | 0.11% | 138,628 | Shares | 2026-09-02 | |
| Large FIFTH THIRD BANCORP Bank | $1,341,025 | 0.11% | 138,250 | Shares | 2026-08-05 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $1,283,736 | 0.10% | 132,344 | Shares | 2026-08-13 | |
| Large Corient Private Wealth LLC Registered adviser | $1,275,879 | 0.10% | 131,534 | Shares | 2026-08-27 | |
| Mega Russell Investments Group, Ltd. | $1,256,449 | 0.10% | 129,531 | Shares | 2026-08-06 | |
| Mid XTX Topco Ltd | $1,241,144 | 0.10% | 127,953 | Shares | 2026-08-14 | |
| Large LOS ANGELES CAPITAL MANAGEMENT LLC Registered adviser | $1,228,272 | 0.10% | 126,626 | Shares | 2026-08-13 | |
| Mega AMERICAN CENTURY COMPANIES INC | $1,208,038 | 0.10% | 124,540 | Shares | 2026-08-12 | |
| Small SLT Holdings LLC Registered adviser | $1,196,097 | 0.10% | 141,550 | Shares | 2026-10-15 | |
| Mega Legal & General Group Plc | $1,175,261 | 0.09% | 121,161 | Shares | 2026-08-14 | |
| Large MetLife Investment Management, LLC Registered adviser | $1,173,903 | 0.09% | 121,021 | Shares | 2026-08-14 | |
| Mid SBI Securities Co., Ltd. Non-US | $1,155,368 | 0.09% | 136,730 | Shares | 2026-10-22 | |
| Large PEAK6 LLC Broker-dealer | $1,069,910 | 0.09% | 110,300 | Call | 2026-08-13 | |
| Mega Invesco Ltd. Adviser | $1,068,307 | 0.09% | 110,135 | Shares | 2026-08-14 | |
| Large Walleye Capital LLC Registered adviser | $1,060,210 | 0.09% | 109,300 | Put | 2026-08-03 | |
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Non-US | $1,015,900 | 0.08% | 104,732 | Shares | 2026-09-09 | |
| Mid Moors & Cabot, Inc. Registered adviser | $1,004,774 | 0.08% | 103,585 | Shares | 2026-08-10 | |
| Large PEAK6 LLC Broker-dealer | $973,201 | 0.08% | 100,330 | Shares | 2026-08-13 | |
| Large State of New Jersey Common Pension Fund D | $955,808 | 0.08% | 98,537 | Shares | 2026-08-04 | |
| Mega Cetera Investment Advisers Registered adviser | $910,645 | 0.07% | 93,881 | Shares | 2026-08-12 | |
| Large Zurcher Kantonalbank (Zurich Cantonalbank) Non-US | $909,947 | 0.07% | 93,809 | Shares | 2026-08-12 | |
| Large Vident Advisory, LLC Registered adviser | $883,969 | 0.07% | 91,131 | Shares | 2026-08-12 | |
| Large Point72 Asset Management, L.P. Registered adviser | $865,240 | 0.07% | 89,200 | Put | 2026-08-14 | |
| Mega Jupiter Topco LLC | $851,834 | 0.07% | 87,818 | Shares | 2026-08-14 | |
| Large STATE OF WISCONSIN INVESTMENT BOARD Benefit plan | $840,922 | 0.07% | 86,693 | Shares | 2026-08-14 | |
| Mid Yarbrough Capital, LLC | $837,023 | 0.07% | 99,056 | Shares | 2026-10-19 | |
| Mid Graham Capital Management, L.P. Registered adviser | $776,000 | 0.06% | 80,000 | Shares | 2026-08-14 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $771,150 | 0.06% | 79,500 | Call | 2026-08-14 | |
| Mid SIMPLEX TRADING, LLC | $761,779 | 0.06% | 78,534 | Shares | 2026-08-12 | |
| Mid Leonteq Securities AG | $706,305 | 0.06% | 72,815 | Shares | 2026-07-27 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $695,121 | 0.06% | 71,662 | Shares | 2026-08-13 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $695,091 | 0.06% | 71,659 | Shares | 2026-08-14 |
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