Ken Griffin Research Frontiers Inc Transaction History

Citadel Advisors LLC

$618 Billion
Q3 2025

A detailed history of Ken Griffin (Citadel Advisors LLC) transactions in Research Frontiers Inc stock. As of the latest transaction made, Citadel Advisors LLC holds 151,300 shares of REFR stock, worth $279,905. This represents 0.0% of its overall portfolio holdings.

Number of Shares

151,300

Previous 22,300 578.48%

Holding current value

$279,905

Previous $36,000 572.22%

% of portfolio

0.0%

Previous 0.0%

20 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q1 2025 May 15, 2025	BUY	$1.13 - $1.79 $22,877 - $36,240	20,246 New	20,246 $22,000
Q2 2024 Aug 14, 2024	SELL	$1.24 - $2.22 $16,408 - $29,377	-13,233 Reduced 28.36%	33,423 $61,000
Q1 2024 May 15, 2024	SELL	$0.93 - $1.47 $609 - $962	-655 Reduced 1.38%	46,656 $60,000
Q4 2023 Feb 14, 2024	BUY	$0.92 - $1.22 $25,505 - $33,822	27,723 Added 141.53%	47,311 $47,000
Q3 2023 Nov 14, 2023	SELL	$1.02 - $1.7 $8,150 - $13,584	-7,991 Reduced 28.97%	19,588 $21,000

Q2 2023 Aug 14, 2023	BUY	$1.42 - $1.76 $21,921 - $27,170	15,438 Added 127.16%	27,579 $44,000
Q1 2023 May 15, 2023	BUY	$1.71 - $2.29 $4,755 - $6,368	2,781 Added 29.71%	12,141 $20,000
Q4 2022 Feb 14, 2023	BUY	$1.87 - $2.47 $17,503 - $23,119	9,360 New	9,360 $17,000
Q2 2022 Aug 15, 2022	SELL	$1.56 - $2.18 $46,246 - $64,626	-29,645 Closed	0 $0
Q1 2022 May 16, 2022	BUY	$1.38 - $2.41 $14,238 - $24,866	10,318 Added 53.39%	29,645 $57,000
Q4 2021 Feb 14, 2022	SELL	$1.68 - $2.56 $18,525 - $28,229	-11,027 Reduced 36.33%	19,327 $33,000
Q3 2021 Nov 15, 2021	BUY	$1.96 - $2.88 $9,390 - $13,798	4,791 Added 18.74%	30,354 $78,000
Q4 2020 Feb 16, 2021	BUY	$2.59 - $3.06 $11,300 - $13,350	4,363 Added 20.58%	25,563 $72,000
Q3 2020 Nov 16, 2020	SELL	$2.14 - $4.08 $18,425 - $35,128	-8,610 Reduced 28.88%	21,200 $57,000
Q2 2020 Aug 14, 2020	BUY	$1.79 - $5.44 $7,680 - $23,343	4,291 Added 16.81%	29,810 $121,000
Q1 2020 May 15, 2020	BUY	$2.34 - $4.15 $27,745 - $49,206	11,857 Added 86.79%	25,519 $60,000
Q4 2019 Feb 14, 2020	SELL	$2.85 - $3.78 $51,357 - $68,115	-18,020 Reduced 56.88%	13,662 $41,000
Q3 2019 Nov 14, 2019	BUY	$2.79 - $5.05 $88,392 - $159,994	31,682 New	31,682 $101,000
Q4 2017 Feb 09, 2018	SELL	$0.91 - $1.36 $14,343 - $21,436	-15,762 Closed	0 $0
Q3 2017 Nov 09, 2017	BUY	$1.02 - $1.28 $16,077 - $20,175	15,762	15,762 $19,000

Others Institutions Holding REFR

# of Institutions

Shares Held

4.38M

Call Options Held

158K

Put Options Held

View Full List

About RESEARCH FRONTIERS INC

Ticker REFR
Exchange NASDAQ
Sector Technology
Industry Electronic Components
Shares Outstandng 33,650,400
Market Cap $62.3M
Description
Research Frontiers Incorporated develops and markets technology and devices to control the flow of light worldwide. The company develops and licenses suspended particle device (SPD-Smart) light-control technology to companies that manufacture and market the SPD-Smart chemical emulsion, light-control film made from the chemical emulsion, the ligh...

More about REFR

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