Logo image of QSI

QUANTUM-SI INC (QSI) Stock Ownership and Short Interest

USA - Nasdaq - NASDAQ:QSI - US74765K1051 - Common Stock

1.27 USD
-0.02 (-1.55%)
Last: 12/2/2025, 8:00:01 PM
1.27 USD
0 (0%)
Pre-Market: 12/3/2025, 9:29:51 AM
QSI Ownership Chart.QSI Ownership Chart: showing Insider, Institutional ownership and shares available to the public.QSI Ownership.InsiderInstitutionalPublic



Shares Outstanding215.49M
Float171.99M
Float Short Interest Percentage9.18%
Owners (insider)5.03%
Owners (institutional)32.35%
Owners (insider) change-0.37%
Owners (institutional) change0.65%
QSI Institutional Ownership HistoryQSI Institutional Ownership HistoryQSI Institutional Ownership History Dec 2021 Mar 2022 Jun 2022 Sep 2022 Dec 2022 Mar 2023 Jun 2023 Sep 2023 Dec 2023 Mar 2024 Jun 2024 Sep 2024 Dec 2024 Mar 2025 Jun 2025 Sep 2025 20M 40M 60M
QSI Historical Insider Transactions ChartQSI Historical Insider Buy and Sell Transactions ChartQSI Historical Insider Transactions Jan 2025 Feb 2025 Mar 2025 Apr 2025 May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 0 1M 2M 3M
Date Name Type Shares Price Amount
Oct 16, 2025 ROTHBERG JONATHAN M Open Market Sale 26095 3.07 $ 80,111.65
Sep 22, 2025 LaPointe Christian Open Market Sale 10728 1.66 $ 17,795.61
Sep 22, 2025 Hawkins Jeffrey Alan Open Market Sale 21286 1.66 $ 35,309.22
Sep 22, 2025 Vieceli John S. Open Market Sale 19686 1.66 $ 32,655.14
Sep 22, 2025 Keyes Jeffry R. Open Market Sale 7746 1.66 $ 12,849.06
Sep 22, 2025 Bennett Todd C. Open Market Sale 36964 1.66 $ 61,315.88
Jun 23, 2025 Hawkins Jeffrey Alan Open Market Sale 23705 1.61 $ 38,257.50
Jun 23, 2025 LaPointe Christian Open Market Sale 11946 1.61 $ 19,279.65
Jun 23, 2025 Keyes Jeffry R. Open Market Sale 8624 1.61 $ 13,918.27
Jun 23, 2025 Vieceli John S. Open Market Sale 21923 1.61 $ 35,381.53
Mar 21, 2025 Vieceli John S. Open Market Sale 4317 1.39 $ 5,981.20
Mar 21, 2025 LaPointe Christian Open Market Sale 4896 1.39 $ 6,783.41
Mar 21, 2025 Keyes Jeffry R. Open Market Sale 8626 1.39 $ 11,951.32
Mar 21, 2025 Hawkins Jeffrey Alan Open Market Sale 23707 1.39 $ 32,846.05
Mar 12, 2025 LaPointe Christian Grant 416666 0.00 $ 0.00
Mar 12, 2025 Keyes Jeffry R. Grant 750000 0.00 $ 0.00
Mar 12, 2025 Bennett Todd C. Grant 208333 0.00 $ 0.00
Mar 12, 2025 Vieceli John S. Grant 708333 0.00 $ 0.00
Mar 12, 2025 Hawkins Jeffrey Alan Grant 1666666 0.00 $ 0.00
Dec 27, 2024 ROTHBERG JONATHAN M Open Market Sale 3506267 3.34 $ 11,716,734.62
Dec 23, 2024 Vieceli John S. Open Market Sale 4306 1.29 $ 5,570.24