Quantum-Si Inc
Total Trades
31
Buys
3
Sells
28
Largest Trade
$1M+
Insiders
11
Institutional Funds
107
Inst. Value
$1M+
Activist Filings
21
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Vieceli John S. | Chief Product Offi… | SELL | $15K–$50K | 22K | $1.28 | Dec 23, 2025 |
| LaPointe Christian | GC & Corp. Secretary | SELL | $15K–$50K | 12K | $1.28 | Dec 23, 2025 |
| Keyes Jeffry R. | CFO | SELL | $1K–$15K | 9K | $1.28 | Dec 23, 2025 |
| Hawkins Jeffrey Alan | President & CEO | SELL | $15K–$50K | 24K | $1.28 | Dec 23, 2025 |
| LaPointe Christian | GC & Corp. Secretary | SELL | $15K–$50K | 11K | $1.66 | Sep 24, 2025 |
| Hawkins Jeffrey Alan | President & CEO | SELL | $15K–$50K | 21K | $1.66 | Sep 24, 2025 |
| Vieceli John S. | Chief Product Offi… | SELL | $15K–$50K | 20K | $1.66 | Sep 24, 2025 |
| Keyes Jeffry R. | CFO | SELL | $1K–$15K | 8K | $1.66 | Sep 24, 2025 |
| Bennett Todd C. | Chief Commercial O… | SELL | $50K–$100K | 37K | $1.66 | Sep 24, 2025 |
| Hawkins Jeffrey Alan | President & CEO | SELL | $15K–$50K | 24K | $1.61 | Jun 24, 2025 |
| Vieceli John S. | Chief Product Offi… | SELL | $15K–$50K | 22K | $1.61 | Jun 24, 2025 |
| LaPointe Christian | GC & Corp. Secretary | SELL | $15K–$50K | 12K | $1.61 | Jun 24, 2025 |
| Keyes Jeffry R. | CFO | SELL | $1K–$15K | 9K | $1.61 | Jun 24, 2025 |
| Hawkins Jeffrey Alan | President & CEO | SELL | $15K–$50K | 24K | $1.39 | Mar 24, 2025 |
| LaPointe Christian | General Counsel & … | SELL | $1K–$15K | 5K | $1.39 | Mar 24, 2025 |
| Keyes Jeffry R. | CFO | SELL | $1K–$15K | 9K | $1.39 | Mar 24, 2025 |
| Vieceli John S. | Chief Product Offi… | SELL | $1K–$15K | 4K | $1.39 | Mar 24, 2025 |
| ROTHBERG JONATHAN M | Director | SELL | $1M+ | 3.5M | $3.34 | Jan 1, 2025 |
| Vieceli John S. | Chief Product Offi… | SELL | $1K–$15K | 4K | $1.29 | Dec 26, 2024 |
| Vieceli John S. | Chief Product Offi… | SELL | $1K–$15K | 4K | $0.94 | Sep 25, 2024 |
| Johnston Grace | Chief Commercial O… | SELL | $1K–$15K | 8K | $1.20 | Jun 25, 2024 |
| LaPointe Christian | General Counsel & … | BUY | $15K–$50K | 20K | $1.77 | Mar 17, 2023 |
| RAKIN KEVIN | Director | SELL | $100K–$500K | 89K | $2.15 | Dec 16, 2022 |
| LaPointe Christian | General Counsel & … | BUY | $50K–$100K | 20K | $3.93 | Aug 18, 2022 |
| ROTHBERG JONATHAN M | Interim CEO | BUY | $50K–$100K | 26K | $3.10 | Jun 16, 2022 |
| MCKENNA MICHAEL P | EVP | SELL | $1K–$15K | 2K | $3.22 | Jun 15, 2022 |
| Dyer Matthew | Chief Business Off… | SELL | $1K–$15K | 2K | $3.22 | Jun 15, 2022 |
| Dyer Matthew | Chief Business Off… | SELL | $15K–$50K | 6K | $4.01 | Mar 17, 2022 |
| MCKENNA MICHAEL P | COO | SELL | $15K–$50K | 7K | $4.01 | Mar 17, 2022 |
| Stark John VIII | CEO | SELL | $1M+ | 180K | $5.87 | Jan 12, 2022 |
| LaPointe Christian | General Counsel & … | SELL | $50K–$100K | 13K | $5.87 | Jan 12, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 107 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| ARK Investment Management LLC | 7.0M | $1M+ | SH |
| Sumitomo Mitsui Trust Group, Inc. | 4.7M | $1M+ | SH |
| Amova Asset Management Americas, Inc. | 4.7M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 3.6M | $1M+ | SH |
| STATE STREET CORP | 3.6M | $1M+ | SH |
| VANGUARD GROUP INC | 1.1M | $1M+ | SH |
| Fosun International Ltd | 744K | $500K+ | SH |
| JANE STREET GROUP, LLC | 671K | $500K+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 468K | $500K+ | SH |
| Knollwood Investment Advisory, LLC | 300K | $100K–$500K | SH |
| ALLIANCEBERNSTEIN L.P. | 272K | $100K–$500K | SH |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd | 254K | $100K–$500K | SH |
| GROUP ONE TRADING LLC | 246K | $100K–$500K | SH |
| BARCLAYS PLC | 245K | $100K–$500K | SH |
| Virtu Financial LLC | 238K | $100K–$500K | SH |
| RHUMBLINE ADVISERS | 194K | $100K–$500K | SH |
| Verdence Capital Advisors LLC | 188K | $100K–$500K | SH |
| GOLDMAN SACHS GROUP INC | 186K | $100K–$500K | SH |
| WELLS FARGO & COMPANY/MN | 176K | $100K–$500K | SH |
| LOS ANGELES CAPITAL MANAGEMENT LLC | 93K | $100K–$500K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Oct 30, 2025
4.8%
8.7M shares
SC 13D/A · Sep 11, 2025
7.8%
14.3M shares
SC 13G · Jul 29, 2025
5.3%
8.7M shares
SC 13G/A · Jun 6, 2025
4.8%
7.8M shares
SC 13G/A · May 14, 2025
5.3%
8.7M shares
SC 13G/A · Feb 14, 2025
7.2%
8.8M shares
Nikko Asset Management Americas, Inc.
SC 13G/A · Feb 13, 2025
4.8%
6.0M shares
Sumitomo Mitsui Trust Group, Inc.
SC 13G/A · Feb 4, 2025
4.8%
6.0M shares
SC 13G/A · Jan 11, 2025
9.7%
11.8M shares
SC 13D/A · Jan 1, 2025
11.5%
14.2M shares
Nikko Asset Management Americas, Inc.
SC 13G · Feb 13, 2024
7.0%
8.5M shares
SC 13G/A · Jan 29, 2024
6.1%
7.4M shares
SC 13G/A · Jan 29, 2024
12.7%
15.5M shares
SC 13G/A · Jul 10, 2023
10.5%
12.8M shares
GLENVIEW CAPITAL MANAGEMENT, LLC
SC 13G/A · Feb 14, 2023
3.5%
4.2M shares
SC 13G/A · Feb 10, 2023
9.9%
11.9M shares
SC 13G · Feb 3, 2023
5.4%
6.5M shares
Foresite Capital Fund IV, L.P. (“FCF IV”)
SC 13D/A · Jun 28, 2022
2.0%
2.3M shares
GLENVIEW CAPITAL MANAGEMENT, LLC
SC 13G/A · Feb 14, 2022
5.1%
6.0M shares
Radcliffe Capital Management, L.P.
SC 13G/A · Feb 14, 2022
0.0%
0 shares
SC 13G/A · Jan 28, 2022
0.0%
0 shares