Security key
74766W108
Quantum Computing Inc. - Common Stock, par value $0.0001 per share (QUBT)
CUSIP: 74766W108
Q3 2026 13F Holders as of 30 Sep 2026
- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Total 13F shares
- 913,533
- Total 13F value
- $7,669,700
- Share change
- -971,433
- SEC-reported price per share
- $8.45
- Number of holders
- 37
- Value change
- -$8,210,445
- Number of buys
- 10
- Number of sells
- 12
- Shares outstanding
- 225,576,651
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2026
Institutions
37
Top holders
10
QUBT full security history
Ownership snapshot
Full 13F holder table
Quantum Computing Inc. SEC filings
Quantum Computing Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of QUBT - Quantum Computing Inc. - Common Stock, par value $0.0001 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Yuping Huang
Disclosed value leader
Yuping Huang
Comparable rows
15/15
Latest evidence
17 Jul 2026
13D/G
3/4/5
13F
Lead comparable stake: 10%
13D/G row: Yuping Huang
Showing 1-6 of 15 holder rows.
Quick read
Yuping Huang leads the comparable SEC ownership view at 10%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Yuping Huang's linked filing trail.
Comparable ownership
Top 5
Yuping Huang
10%
BlackRock, Inc.
6.7%
CITADEL ADVISORS LLC
4.9%
Eric Mark Schwartz
0.01%
Susan G. Hunt
0%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Yuping Huang |
13D/G
3/4/5
CEO and President, Director, 10%+ Owner
|
10%
|
$257,021,810
23,302,068 shares
|
$0 | 03 Apr 2023 |
| BlackRock, Inc. |
13F
13D/G
Company
|
6.7%
from 13D/G
|
$172,019,558
17,733,975 shares
|
— | 30 Jun 2026 |
| CITADEL ADVISORS LLC |
13D/G
13F
Kenneth Griffin · Company
|
4.9%
|
$146,902,081
9,244,939 shares
|
$0 | 25 Sep 2025 |
| Eric Mark Schwartz |
3/4/5
Director
|
0.01%
|
$151,542
22,123 shares
|
— | 13 Apr 2026 |
| Susan G. Hunt |
3/4/5
Chief Revenue Officer
|
0%
|
$97
10 shares
|
— | 17 Jul 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
3.9%
|
$85,834,146
8,848,881 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
37
Shares
913,533
Rows available
37
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2026 vs Q2 2026 Across Filers
Q2 2026 holders
312
Q3 2026 holders
37
Holder diff
-275
| Investor | Q2 2026 Shares | Q3 2026 Shares | Share Diff | Share Chg % | Q2 2026 value | Q3 2026 value | Value change | Value Chg % |
|---|