Security key
74765K105
- Type / Class
- Equity / Common Stock
- Shares outstanding
- 182,694,067
- Total 13F shares
- 63,088,581
- Share change
- -4,576,179
- Total reported value
- $48,934,564
- Put/Call ratio
- 65%
- Price per share
- $0.77
- Number of holders
- 155
- Value change
- -$4,178,187
- Number of buys
- 76
- Number of sells
- 55
Report period
Q1 2026
Institutions
155
Top holders
10
QSI full security history
Previous quarter: Q4 2025
Quantum-Si Inc SEC filings
Quantum-Si Inc company facts
Broader feeds
Reporting periods
Holder history for CUSIP 74765K105
Recent filing periods:
Top shareholders of QSI - Quantum-Si Inc - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: 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.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Ph.D. Jonathan M. Rothberg |
13D/G
|
ROTHBERG JONATHAN M. |
100%
|
19,937,500
|
$23,326,875 | $0 | 09 Sep 2025 | |
| Amova Asset Management Americas, Inc. |
13D/G
13F
|
Nikko Asset Management Americas, Inc. · Company |
4.8%
|
5,965,208
|
$7,217,902 | $0 | 31 Dec 2024 | |
| Sumitomo Mitsui Trust Group, Inc. |
13D/G
13F
|
Company |
4.8%
|
5,965,208
|
$7,217,902 | $0 | 31 Dec 2024 | |
| VANGUARD GROUP INC |
13D/G
13F
|
The Vanguard Group · Company |
4.8%
|
8,714,507
|
$12,287,455 | +$63,233 | 30 Sep 2025 | |
| ARK Investment Management LLC |
13D/G
13F
|
Company |
4.8%
|
7,809,337
|
$11,792,099 | -$1,365,288 | 31 May 2025 | |
| Todd C. Bennett |
3/4/5
|
Chief Commercial Officer |
0.37%
|
681,521
|
$1,114,286 | -$61,316 | 22 Sep 2025 | |
| BlackRock, Inc. |
13F
|
Company |
7.1%
|
13,054,057
|
$14,359,463 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.3%
|
4,114,375
|
$4,526,616 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
2%
|
3,562,721
|
$3,918,993 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
1.5%
|
2,676,097
|
$2,943,707 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1.2%
|
2,207,936
|
$2,428,730 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.76%
|
1,384,181
|
$1,522,599 | — | 31 Dec 2025 | |
| Fosun International Ltd |
13F
|
Company |
0.41%
|
743,935
|
$818,329 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.26%
|
468,174
|
$514,991 | — | 31 Dec 2025 | |
| XTX Topco Ltd |
13F
|
Company |
0.25%
|
461,982
|
$508,180 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.24%
|
447,519
|
$492,271 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.22%
|
406,291
|
$446,920 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.22%
|
402,821
|
$443,103 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.22%
|
399,994
|
$439,994 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.21%
|
386,824
|
$425,507 | — | 31 Dec 2025 | |
| Knollwood Investment Advisory, LLC |
13F
|
Company |
0.16%
|
300,000
|
$330,000 | — | 31 Dec 2025 | |
| Quadrature Capital Ltd |
13F
|
Company |
0.15%
|
276,889
|
$304,578 | — | 31 Dec 2025 | |
| ALLIANCEBERNSTEIN L.P. |
13F
|
Company |
0.15%
|
272,180
|
$299,398 | — | 31 Dec 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.15%
|
269,415
|
$296,357 | — | 31 Dec 2025 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.14%
|
261,100
|
$287,210 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.14%
|
258,445
|
$284,289 | — | 31 Dec 2025 | |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd |
13F
|
Company |
0.14%
|
253,895
|
$279,285 | — | 31 Dec 2025 | |
| GROUP ONE TRADING LLC |
13F
|
Company |
0.13%
|
245,801
|
$270,381 | — | 31 Dec 2025 | |
| Virtu Financial LLC |
13F
|
Company |
0.13%
|
238,379
|
$262,000 | — | 31 Dec 2025 | |
| RHUMBLINE ADVISERS |
13F
|
Company |
0.11%
|
193,595
|
$212,948 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.1%
|
191,791
|
$210,970 | — | 31 Dec 2025 | |
| Verdence Capital Advisors LLC |
13F
|
Company |
0.1%
|
187,805
|
$206,585 | — | 31 Dec 2025 | |
| WELLS FARGO & COMPANY/MN |
13F
|
Company |
0.1%
|
176,132
|
$193,745 | — | 31 Dec 2025 | |
| Shay Capital LLC |
13F
|
Company |
0.08%
|
149,132
|
$164,045 | — | 31 Dec 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
0.07%
|
119,028
|
$130,931 | — | 31 Dec 2025 | |
| HRT FINANCIAL LP |
13F
|
Company |
0.06%
|
104,292
|
$114,000 | — | 31 Dec 2025 | |
| JONES FINANCIAL COMPANIES LLLP |
13F
|
Company |
0.05%
|
98,900
|
$108,790 | — | 31 Dec 2025 | |
| FMR LLC |
13F
|
Company |
0.05%
|
97,925
|
$107,718 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
0.05%
|
96,486
|
$107,000 | — | 31 Dec 2025 | |
| LOS ANGELES CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.05%
|
93,010
|
$188,810 | — | 31 Dec 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.05%
|
86,689
|
$95,358 | — | 31 Dec 2025 | |
| SIMPLEX TRADING, LLC |
13F
|
Company |
0.04%
|
80,507
|
$88,557 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.04%
|
76,909
|
$84,600 | — | 31 Dec 2025 | |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. |
13F
|
Company |
0.04%
|
72,970
|
$80,267 | — | 31 Dec 2025 | |
| INTECH INVESTMENT MANAGEMENT LLC |
13F
|
Company |
0.04%
|
65,636
|
$72,200 | — | 31 Dec 2025 | |
| Mariner, LLC |
13F
|
Company |
0.03%
|
56,880
|
$62,568 | — | 31 Dec 2025 | |
| Green Alpha Advisors, LLC |
13F
|
Company |
0.03%
|
51,528
|
$56,681 | — | 31 Dec 2025 | |
| AlphaCore Capital LLC |
13F
|
Company |
0.03%
|
49,350
|
$54,285 | — | 31 Dec 2025 | |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE |
13F
|
Company |
0.03%
|
48,372
|
$53,209 | — | 31 Dec 2025 | |
| Police & Firemen's Retirement System of New Jersey |
13F
|
Company |
0.03%
|
46,170
|
$50,787 | — | 31 Dec 2025 |
Institutional Holders of Quantum-Si Inc - Common Stock (QSI) as of Q1 2026
As of 31 Mar 2026,
Quantum-Si Inc - Common Stock (QSI) was held by
155 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
63,088,581 shares.
The largest 10 holders included
BlackRock, Inc., VANGUARD CAPITAL MANAGEMENT LLC, ARK Investment Management LLC, Sumitomo Mitsui Trust Group, Inc., Amova Asset Management Americas, Inc., GEODE CAPITAL MANAGEMENT, LLC, STATE STREET CORP, AQR CAPITAL MANAGEMENT LLC, UBS Group AG, and VANGUARD PORTFOLIO MANAGEMENT LLC.
This page lists
155
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
134
Q1 2026 holders
155
Holder diff
21
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.