Who owns Quantum Computing (QUBT)
Which tracked institutional funds hold QUBT, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See QUBT company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-24). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on QUBT is one-sided between 2026-Q1 and 2026-Q2: 83 added or opened and 21 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
QUBT’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes QUBT more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in QUBT divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 300 tracked filers holding QUBT, 186 increased or opened the position and 121 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in QUBT between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 12
- Sixth Street Partners Management Company, L.P.$16M
- AMERICAN CENTURY COMPANIES INC$1M
- Moors & Cabot, Inc.$1M
- State of New Jersey Common Pension Fund D$956K
- Jupiter Topco LLC$852K
- Graham Capital Management, L.P.$776K
Full exits 12
- Penserra Capital Management LLC$23M
- HRT FINANCIAL LP$10M
- RENAISSANCE TECHNOLOGIES LLC$5M
- Quantbot Technologies LP$3M
- Quadrature Capital Ltd$1M
- Walleye Trading LLC$1M
Largest adds
- BlackRock, Inc.$61M
- Defiance ETFs, LLC$36M
- VANGUARD CAPITAL MANAGEMENT LLC$26M
- GEODE CAPITAL MANAGEMENT, LLC$19M
- VANGUARD PORTFOLIO MANAGEMENT LLC$18M
- STATE STREET CORP$17M
Largest trims
- Marex Group Ltd$8M
- Jump Financial, LLC$6M
- Squarepoint Ops LLC$5M
- Engineers Gate Manager LP$4M
- CITADEL ADVISORS LLC$4M
- TWO SIGMA INVESTMENTS, LP$825K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 17,733,975 | $172M | 11.7% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 8,848,881 | $86M | 5.8% | 2026-Q2 |
| Defiance ETFs, LLC added | 7,033,410 | $66M | 4.5% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 6,566,582 | $64M | 4.3% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 5,322,648 | $52M | 3.5% | 2026-Q2 |
| STATE STREET CORP added | 4,921,317 | $48M | 3.2% | 2026-Q2 |
| MORGAN STANLEY added | 3,292,011 | $32M | 2.2% | 2026-Q2 |
| Marex Group Ltd trimmed | 2,302,359 | $22M | 1.5% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 2,272,533 | $22M | 1.5% | 2026-Q2 |
| UBS Group AG added | 2,045,200 | $20M | 1.3% | 2026-Q2 |
| Bank of New York Mellon Corp added | 1,975,697 | $19M | 1.3% | 2026-Q2 |
| NORTHERN TRUST CORP added | 1,815,091 | $18M | 1.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 1,641,744 | $16M | 1.1% | 2026-Q2 |
| Sixth Street Partners Management Company, L.P. new | 1,641,744 | $16M | 1.1% | 2026-Q2 |
| Mubadala Investment Co PJSC | 1,587,350 | $15M | 1.0% | 2026-Q2 |
| CAPITAL FUND MANAGEMENT S.A. trimmed | 1,505,193 | $15M | 1.0% | 2026-Q2 |
| NATIONAL BANK OF CANADA /FI/ added | 1,458,236 | $14M | 1.0% | 2026-Q2 |
| Clear Street Group Inc. added | 1,427,999 | $14M | 0.9% | 2026-Q2 |
| VAN ECK ASSOCIATES CORP added | 1,317,352 | $13M | 0.9% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 1,301,720 | $13M | 0.9% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 1,172,886 | $11M | 0.8% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 1,070,785 | $10M | 0.7% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 1,037,659 | $10M | 0.7% | 2026-Q2 |
| Pacific Heights Asset Management LLC | 1,000,000 | $10M | 0.7% | 2026-Q2 |
| Focus Financial Network, Inc. added | 911,635 | $9M | 0.6% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 789,243 | $8M | 0.5% | 2026-Q2 |
| Nuveen, LLC added | 632,451 | $6M | 0.4% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 582,618 | $6M | 0.4% | 2026-Q2 |
| Blackstone Inc. | 500,000 | $5M | 0.3% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 445,251 | $4M | 0.3% | 2026-Q2 |
| BARCLAYS PLC added | 404,331 | $4M | 0.3% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 402,727 | $4M | 0.3% | 2026-Q2 |
| Swiss National Bank trimmed | 395,400 | $4M | 0.3% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 387,812 | $4M | 0.3% | 2026-Q2 |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. added | 381,046 | $4M | 0.3% | 2026-Q2 |
| LPL Financial LLC added | 380,999 | $4M | 0.3% | 2026-Q2 |
| UNICOM Systems, Inc. | 362,279 | $4M | 0.2% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 359,801 | $3M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 321,236 | $3M | 0.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 275,225 | $3M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 263,716 | $3M | 0.2% | 2026-Q2 |
| CITIGROUP INC added | 253,484 | $2M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 248,322 | $2M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 224,011 | $2M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 208,776 | $2M | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 184,303 | $2M | 0.1% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 186,284 | $2M | 0.1% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 174,293 | $2M | 0.1% | 2026-Q2 |
| Foundations Investment Advisors, LLC trimmed | 172,427 | $2M | 0.1% | 2026-Q2 |
| SLT Holdings LLC trimmed | 170,550 | $2M | 0.1% | 2026-Q2 |
| Headlands Technologies LLC trimmed | 154,901 | $2M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 219,252 | $2M | 0.1% | 2026-Q2 |
| Brevan Howard Capital Management LP added | 153,629 | $1M | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP added | 149,469 | $1M | 0.1% | 2026-Q2 |
| SBI Securities Co., Ltd. added | 143,253 | $1M | 0.1% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 138,628 | $1M | 0.1% | 2026-Q2 |
| FIFTH THIRD BANCORP added | 138,250 | $1M | 0.1% | 2026-Q2 |
| Corient Private Wealth LP added | 132,594 | $1M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd | 132,344 | $1M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 129,531 | $1M | 0.1% | 2026-Q2 |
| XTX Topco Ltd added | 127,953 | $1M | 0.1% | 2026-Q2 |
| LOS ANGELES CAPITAL MANAGEMENT LLC trimmed | 126,626 | $1M | 0.1% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC new | 124,540 | $1M | 0.1% | 2026-Q2 |
| Legal & General Group Plc trimmed | 121,161 | $1M | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 121,021 | $1M | 0.1% | 2026-Q2 |
| Invesco Ltd. trimmed | 110,135 | $1M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 104,732 | $1M | 0.1% | 2026-Q2 |
| Moors & Cabot, Inc. new | 103,585 | $1M | 0.1% | 2026-Q2 |
| PEAK6 LLC added | 100,330 | $973K | 0.1% | 2026-Q2 |
| Yarbrough Capital, LLC | 99,056 | $961K | 0.1% | 2026-Q2 |
| State of New Jersey Common Pension Fund D new | 98,537 | $956K | 0.1% | 2026-Q2 |
| Cetera Investment Advisers trimmed | 93,881 | $911K | 0.1% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) added | 93,809 | $910K | 0.1% | 2026-Q2 |
| Vident Advisory, LLC added | 91,131 | $884K | 0.1% | 2026-Q2 |
| VANGUARD GROUP INC added | 16,841,423 | $173M | 11.7% | 2025-Q4 stale |
| Anson Funds Management LP added | 5,373,455 | $99M | 6.7% | 2025-Q3 stale |
| JANE STREET GROUP, LLC added | 4,978,363 | $90M | 6.1% | 2025-Q2 stale |
| Ghisallo Capital Management LLC new | 4,030,092 | $74M | 5.0% | 2025-Q3 stale |
| Polar Asset Management Partners Inc. added | 2,686,727 | $49M | 3.3% | 2025-Q3 stale |
| Penserra Capital Management LLC added | 3,349,847 | $23M | 1.6% | 2026-Q1 stale |
| CANADA PENSION PLAN INVESTMENT BOARD new | 1,026,700 | $11M | 0.7% | 2025-Q4 stale |
| JUPITER ASSET MANAGEMENT LTD new | 638,349 | $7M | 0.4% | 2025-Q4 stale |
| Tairen Capital Ltd new | 342,750 | $6M | 0.4% | 2025-Q3 stale |
| Y-Intercept (Hong Kong) Ltd new | 295,455 | $5M | 0.4% | 2025-Q3 stale |
| Alyeska Investment Group, L.P. trimmed | 500,000 | $5M | 0.3% | 2025-Q4 stale |
| Voleon Capital Management LP new | 270,887 | $5M | 0.3% | 2025-Q3 stale |
| TUDOR INVESTMENT CORP ET AL | 248,884 | $5M | 0.3% | 2025-Q4 stale |
| RENAISSANCE TECHNOLOGIES LLC added | 667,674 | $5M | 0.3% | 2026-Q1 stale |
| Informed Momentum Co LLC added | 173,779 | $3M | 0.2% | 2025-Q3 stale |
| Quantbot Technologies LP added | 411,048 | $3M | 0.2% | 2026-Q1 stale |
| CADIAN CAPITAL MANAGEMENT, LP new | 270,000 | $2M | 0.1% | 2025-Q1 stale |
| Sassicaia Capital Advisers LLC new | 83,161 | $2M | 0.1% | 2025-Q2 stale |
| FIRST TRUST ADVISORS LP trimmed | 140,267 | $1M | 0.1% | 2025-Q4 stale |
| Quadrature Capital Ltd trimmed | 209,348 | $1M | 0.1% | 2026-Q1 stale |
| MIRAE ASSET SECURITIES (USA) INC. trimmed | 76,908 | $1M | 0.1% | 2025-Q3 stale |
| Qsemble Capital Management, LP added | 136,165 | $1M | 0.1% | 2025-Q4 stale |
| COMERICA BANK added | 134,300 | $1M | 0.1% | 2025-Q4 stale |
| Walleye Trading LLC added | 178,992 | $1M | 0.1% | 2026-Q1 stale |
| AVANTAX ADVISORY SERVICES, INC. added | 62,206 | $1M | 0.1% | 2025-Q2 stale |
| SPX Gestao de Recursos Ltda new | 64,000 | $1M | 0.1% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.