CITADEL ADVISORS LLC

CIK

1423053

City

MIAMI

State / Country

Stock

REFR — Research Frontiers Inc

Top Portfolio Positions

4,277 positions · $548,325,010,314 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
SPY	Spdr S&P 500 ETF Trust	64,565,975	$41,989,836,181	7.66%
QQQ	Invesco Qqq Trust, Series 1	55,171,964	$31,844,154,181	5.81%
NVDA	Nvidia Corp Technology	137,243,161	$23,935,207,278	4.37%
TSLA	Tesla, Inc. Consumer Cyclical	63,922,509	$23,763,192,720	4.33%
GLD	Spdr Gold Trust	34,441,722	$14,819,928,559	2.70%
AAPL	Apple Inc. Technology	55,393,070	$14,058,207,235	2.56%
META	Meta Platforms, Inc. Communication Services	23,967,037	$13,712,260,878	2.50%
MSFT	Microsoft Corp Technology	32,176,424	$11,910,746,871	2.17%
AMZN	Amazon Com Inc Consumer Cyclical	51,582,437	$10,743,074,153	1.96%
MU	Micron Technology Inc Technology	31,629,772	$10,685,802,171	1.95%

Portfolio Trend

25 quarters · across all stocks

Holdings in REFR

Compact Export CSV

Shares Held

Position Value (USD)

40 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2025-12-31	$79,008	60,312	+291.6%	Shares	Defined	2026-02-17
2025-12-31	$20,174	15,400	-89.8%	Call	Defined	2026-02-17
2025-09-30	$240,567	151,300	+578.5%	Call	Defined	2025-11-14
2025-06-30	$36,572	22,300	-79.6%	Call	Defined	2025-08-14
2025-03-31	$123,735	109,500	+440.8%	Call	Defined	2025-05-15
2025-03-31	$22,877	20,246	+221.4%	Shares	Defined	2025-05-15
2024-12-31	$10,773	6,300	+10.5%	Put	Defined	2025-02-14
2024-12-31	$9,747	5,700	+1800.0%	Call	Defined	2025-02-14
2024-06-30	$552	300	-99.1%	Put	Defined	2024-08-14
2024-06-30	$61,498	33,423	+1014.1%	Shares	Defined	2024-08-14
2024-06-30	$5,520	3,000	-93.6%	Call	Defined	2024-08-14
2024-03-31	$60,652	46,656	+15452.0%	Shares	Defined	2024-05-15
2024-03-31	$390	300	-99.7%	Put	Defined	2024-05-15
2024-03-31	$113,360	87,200	+43500.0%	Call	Defined	2024-05-15
2023-12-31	$202	200	-99.6%	Put	Defined	2024-02-14
2023-12-31	$47,784	47,311	+141.5%	Shares	Defined	2024-02-14
2023-09-30	$21,155	19,588	-29.0%	Shares	Defined	2023-11-14
2023-06-30	$44,126	27,579	+4496.5%	Shares	Defined	2023-08-14
2023-06-30	$960	600	-95.1%	Call	Defined	2023-08-14
2023-03-31	$20,761	12,141	+614.2%	Shares	Defined	2023-05-15
2023-03-31	$2,907	1,700	+112.5%	Call	Defined	2023-05-15
2022-12-31	$1,528	800	-91.5%	Call	Defined	2023-02-14
2022-12-31	$17,877	9,360	-68.4%	Shares	Defined	2023-02-14
2022-03-31	$56,918	29,645	+92.5%	Shares	Defined	2022-05-16
2021-12-31	$26,488	15,400	-20.3%	Put	Defined	2022-02-14
2021-12-31	$33,242	19,327	-10.5%	Shares	Defined	2022-02-14
2021-09-30	$55,296	21,600	-28.8%	Put	Defined	2021-11-15
2021-09-30	$77,706	30,354	+23.9%	Shares	Defined	2021-11-15
2021-09-30	$62,720	24,500	+1.7%	Call	Defined	2021-11-15
2021-06-30	$57,117	24,100	+1.3%	Call	Defined	2021-08-16
2021-03-31	$67,592	23,800	+66.4%	Call	Defined	2021-05-21
2021-03-31	$40,612	14,300	-44.1%	Put	Defined	2021-05-21
2020-12-31	$71,832	25,563	+42.0%	Shares	Defined	2021-02-16
2020-12-31	$50,580	18,000	-55.9%	Call	Defined	2021-02-16
2020-09-30	$110,160	40,800	+92.5%	Call	Defined	2020-11-16
2020-09-30	$57,240	21,200	-28.9%	Shares	Defined	2020-11-16
2020-06-30	$121,028	29,810	-38.2%	Shares	Defined	2020-08-14
2020-06-30	$195,692	48,200	+88.9%	Call	Defined	2020-08-14
2020-03-31	$59,714	25,519	+97.8%	Shares	Defined	2020-05-15
2020-03-31	$30,186	12,900	—	Call	Defined	2020-05-15
No 13F history on record for this holder in this stock.