QUANTUM COMPUTING INC (QUBT) Institutional Shareholders
QUANTUM COMPUTING INC (QUBT) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $990.37M in QUBT holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of QUBT tracked by InsiderSet, reporting ownership valued at approximately $172.02M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $154.29M, representing an estimated loss of -10.31% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 64% of the total disclosed QUBT value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Penserra Capital Management Llc, and several other long-term asset managers with concentrated positions in QUANTUM COMPUTING INC (QUBT).
This page ranks the largest institutional QUBT shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
303
Total Reported Value
$990.37M
Largest Holder
Blackrock, Inc.
Largest Position
$172.02M
Insider Transactions (90d)
1
Latest Filing Quarter
Q2 2026
New Institutional Positions
64
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 17,733,975 | $172,019,558 | $154,285,583 | -$17,733,976 | -10.31% | |
| Vanguard Capital Management Llc | 0.00% | 8,848,881 | $85,834,146 | $76,985,265 | -$8,848,881 | -10.31% | |
| Penserra Capital Management Llc | 0.52% | 6,979,349 | $67,699,000 | $60,720,336 | -$6,978,664 | -10.31% | |
| Defiance Etfs, Llc | 0.92% | 7,033,410 | $66,325,056 | $61,190,667 | -$5,134,389 | -7.74% | |
| Vanguard Portfolio Management Llc | 0.00% | 6,566,582 | $63,695,845 | $57,129,263 | -$6,566,582 | -10.31% | |
| Geode Capital Management, Llc | 0.00% | 5,322,648 | $51,638,896 | $46,307,038 | -$5,331,858 | -10.33% | |
| State Street Corp | 0.00% | 4,921,317 | $47,736,775 | $42,815,458 | -$4,921,317 | -10.31% | |
| Morgan Stanley | 0.00% | 3,292,011 | $31,932,512 | $28,640,496 | -$3,292,016 | -10.31% | |
| Marex Group Plc | 0.19% | 2,302,359 | $22,332,882 | $20,030,523 | -$2,302,359 | -10.31% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.03% | 2,272,533 | $22,052,327 | $19,771,037 | -$2,281,290 | -10.34% | |
| Ubs Group Ag | 0.00% | 2,045,200 | $19,838,440 | $17,793,240 | -$2,045,200 | -10.31% | |
| Bank Of New York Mellon Corp | 0.00% | 1,975,697 | $19,164,260 | $17,188,564 | -$1,975,696 | -10.31% | |
| Northern Trust Corp | 0.00% | 1,815,091 | $17,606,381 | $15,791,292 | -$1,815,089 | -10.31% | |
| Charles Schwab Investment Management Inc | 0.00% | 1,641,744 | $15,924,917 | $14,283,173 | -$1,641,744 | -10.31% | |
| Mubadala Investment Co Pjsc | 0.04% | 1,587,350 | $15,397,295 | $13,809,945 | -$1,587,350 | -10.31% | |
| Capital Fund Management S.A. | 0.10% | 1,505,193 | $14,600,372 | $13,095,179 | -$1,505,193 | -10.31% | |
| National Bank Of Canada | 0.01% | 1,458,236 | $14,144,886 | $12,686,653 | -$1,458,233 | -10.31% | |
| Clear Street Group Inc. | 0.04% | 1,427,999 | $13,851,590 | $12,423,591 | -$1,427,999 | -10.31% | |
| Van Eck Associates Corp | 0.01% | 1,317,352 | $12,778,314 | $11,460,962 | -$1,317,352 | -10.31% | |
| Vanguard Fiduciary Trust Co | 0.00% | 1,301,720 | $12,626,684 | $11,324,964 | -$1,301,720 | -10.31% | |
| Susquehanna International Group, Llp | 0.01% | 1,172,886 | $11,376,994 | $10,204,108 | -$1,172,886 | -10.31% | |
| Bnp Paribas Financial Markets | 0.01% | 1,070,785 | $10,386,614 | $9,315,830 | -$1,070,785 | -10.31% | |
| Raymond James Financial Inc | 0.00% | 1,037,659 | $10,065,292 | $9,027,633 | -$1,037,659 | -10.31% | |
| Pacific Heights Asset Management Llc | 0.31% | 1,000,000 | $9,700,000 | $8,700,000 | -$1,000,000 | -10.31% | |
| Focus Financial Network, Inc. | 0.27% | 911,635 | $8,842,859 | $7,931,224 | -$911,635 | -10.31% | |
| Goldman Sachs Group Inc | 0.00% | 789,243 | $7,655,654 | $6,866,414 | -$789,240 | -10.31% | |
| Nuveen, Llc | 0.00% | 632,451 | $6,134,774 | $5,502,324 | -$632,450 | -10.31% | |
| D. E. Shaw & Co., Inc. | 0.00% | 582,618 | $5,651,395 | $5,068,777 | -$582,618 | -10.31% | |
| Blackstone Inc. | 0.02% | 500,000 | $4,850,000 | $4,350,000 | -$500,000 | -10.31% | |
| Algert Global Llc | 0.05% | 445,251 | $4,318,935 | $3,873,684 | -$445,251 | -10.31% | |
| Barclays Plc | 0.00% | 404,331 | $3,922,011 | $3,517,680 | -$404,331 | -10.31% | |
| Squarepoint Ops Llc | 0.01% | 402,727 | $3,906,452 | $3,503,725 | -$402,727 | -10.31% | |
| Swiss National Bank | 0.00% | 395,400 | $3,835,380 | $3,439,980 | -$395,400 | -10.31% | |
| Bank Of America Corp | 0.00% | 387,812 | $3,761,777 | $3,373,964 | -$387,813 | -10.31% | |
| Landscape Capital Management, L.L.C. | 0.24% | 381,046 | $3,696,146 | $3,315,100 | -$381,046 | -10.31% | |
| Lpl Financial Llc | 0.00% | 380,999 | $3,695,690 | $3,314,691 | -$380,999 | -10.31% | |
| Unicom Systems, Inc. | 0.23% | 362,279 | $3,514,106 | $3,151,827 | -$362,279 | -10.31% | |
| Millennium Management Llc | 0.00% | 359,801 | $3,490,070 | $3,130,269 | -$359,801 | -10.31% | |
| Price T Rowe Associates Inc | 0.00% | 275,225 | $2,670,000 | $2,394,458 | -$275,543 | -10.32% | |
| Rhumbline Advisers | 0.00% | 263,716 | $2,558,035 | $2,294,329 | -$263,706 | -10.31% | |
| Citigroup Inc | 0.00% | 253,484 | $2,458,795 | $2,205,311 | -$253,484 | -10.31% | |
| Wells Fargo & Company/Mn | 0.00% | 248,322 | $2,408,724 | $2,160,401 | -$248,323 | -10.31% | |
| California State Teachers Retirement System | 0.00% | 224,011 | $2,172,907 | $1,948,896 | -$224,011 | -10.31% | |
| Deutsche Bank Ag\ | 0.00% | 208,776 | $2,025,127 | $1,816,351 | -$208,776 | -10.31% | |
| Jpmorgan Chase & Co | 0.00% | 184,303 | $1,920,541 | $1,603,436 | -$317,105 | -16.51% | |
| Two Sigma Investments, Lp | 0.00% | 186,284 | $1,806,955 | $1,620,671 | -$186,284 | -10.31% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 250,461 | $1,715,658 | $2,179,011 | +$463,353 | +27.01% | |
| Royal Bank Of Canada | 0.00% | 174,293 | $1,691,000 | $1,516,349 | -$174,651 | -10.33% | |
| Foundations Investment Advisors, Llc | 0.02% | 172,427 | $1,672,542 | $1,500,115 | -$172,427 | -10.31% | |
| Slt Holdings Llc | 1.06% | 170,550 | $1,654,335 | $1,483,785 | -$170,550 | -10.31% |
Frequently asked questions about QUBT
Who owns the most QUBT stock?
The largest holders of QUBT are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for QUANTUM COMPUTING INC (QUBT).
Is QUBT widely held by superinvestors?
Many widely followed stocks like QUBT appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly QUBT is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.