Ken Griffin Quantum Si Inc Transaction History

Citadel Advisors LLC

$550 Billion
Q2 2025

A detailed history of Ken Griffin (Citadel Advisors LLC) transactions in Quantum Si Inc stock. As of the latest transaction made, Citadel Advisors LLC holds 261,300 shares of QSI stock, worth $303,108. This represents 0.0% of its overall portfolio holdings.

Number of Shares

261,300

Previous 297,800 12.26%

Holding current value

$303,108

Previous $357,000 43.42%

% of portfolio

0.0%

Previous 0.0%

10 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Aug 14, 2025	BUY	$1.08 - $2.05 $453,393 - $860,608	419,809 Added 303.12%	558,307 $1.09 Million
Q1 2025 May 15, 2025	BUY	$1.14 - $4.29 $157,887 - $594,156	138,498 New	138,498 $166,000
Q3 2024 Nov 14, 2024	SELL	$0.82 - $1.22 $120,168 - $178,787	-146,547 Reduced 64.76%	79,753 $70,000
Q2 2024 Aug 14, 2024	BUY	$0.84 - $1.89 $111,972 - $251,937	133,300 Added 143.33%	226,300 $237,000
Q1 2024 May 15, 2024	SELL	$1.43 - $2.23 $45,945 - $71,649	-32,130 Reduced 25.68%	93,000 $183,000
Q4 2023 Feb 14, 2024	BUY	$1.15 - $2.27 $143,899 - $284,045	125,130 New	125,130 $251,000
Q2 2023 Aug 14, 2023	BUY	$1.38 - $1.83 $105,539 - $139,954	76,478 Added 249.66%	107,111 $191,000
Q1 2023 May 15, 2023	SELL	$1.59 - $2.58 $181,500 - $294,509	-114,151 Reduced 78.84%	30,633 $53,000
Q4 2022 Feb 14, 2023	SELL	$1.82 - $3.27 $38,849 - $69,801	-21,346 Reduced 12.85%	144,784 $264,000
Q3 2022 Nov 14, 2022	SELL	$0.74 - $4.35 $91,771 - $539,465	-124,015 Reduced 42.74%	166,130 $457,000

Others Institutions Holding QSI

# of Institutions

153

Shares Held

61.2M

Call Options Held

781K

Put Options Held

1.01M

View Full List

About Quantum-Si Inc

Ticker QSI
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 119,433,000
Market Cap $139M
Description
Quantum-Si incorporated, a life sciences company, develops a single molecule detection platform for sample preparation and sequencing. It offers a proprietary single molecule detection platform for use in semiconductor industry to field proteomics to enable next generation protein sequencing. The company was incorporated in 2013 is based in Guil...

More about QSI

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