Research Frontiers Incorporated (REFR)

NASDAQ: REFR · Real-Time Price · USD

0.4101

+0.0079 (1.96%)

At close: Sep 3, 2026, 4:00 PM EDT

0.4100

-0.0001 (-0.02%)

After-hours: Sep 3, 2026, 7:54 PM EDT

Research Frontiers Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Sep 3, 2026	0.40	0.43	0.40	0.41	0.41	1.96%	62,722
Sep 2, 2026	0.45	0.46	0.40	0.40	0.40	-9.41%	90,749
Sep 1, 2026	0.47	0.47	0.43	0.44	0.44	-4.95%	378,421
Aug 31, 2026	0.47	0.47	0.45	0.47	0.47	1.08%	61,029
Aug 28, 2026	0.49	0.49	0.45	0.46	0.46	-4.72%	149,391
Aug 27, 2026	0.51	0.53	0.47	0.49	0.49	1.04%	342,942
Aug 26, 2026	0.48	0.50	0.46	0.48	0.48	0.44%	101,259
Aug 25, 2026	0.49	0.51	0.46	0.48	0.48	2.33%	180,902
Aug 24, 2026	0.44	0.49	0.43	0.47	0.47	4.92%	92,990
Aug 21, 2026	0.46	0.47	0.43	0.45	0.45	-1.09%	65,617
Aug 20, 2026	0.46	0.49	0.44	0.45	0.45	2.23%	119,056
Aug 19, 2026	0.42	0.46	0.40	0.44	0.44	4.81%	200,512
Aug 18, 2026	0.44	0.47	0.42	0.42	0.42	-2.44%	35,377
Aug 17, 2026	0.43	0.48	0.42	0.43	0.43	-2.16%	64,771
Aug 14, 2026	0.45	0.45	0.43	0.44	0.44	1.20%	11,570
Aug 13, 2026	0.48	0.48	0.43	0.43	0.43	-9.68%	77,869
Aug 12, 2026	0.49	0.49	0.47	0.48	0.48	-2.37%	50,862
Aug 11, 2026	0.50	0.51	0.49	0.49	0.49	0.63%	40,198
Aug 10, 2026	0.49	0.50	0.47	0.49	0.49	0.72%	161,757
Aug 7, 2026	0.50	0.50	0.45	0.49	0.49	4.06%	94,171
Aug 6, 2026	0.46	0.50	0.45	0.47	0.47	-1.37%	230,082
Aug 5, 2026	0.47	0.49	0.45	0.47	0.47	1.28%	18,778
Aug 4, 2026	0.47	0.49	0.46	0.47	0.47	3.59%	62,535
Aug 3, 2026	0.41	0.53	0.41	0.45	0.45	12.89%	233,455
Jul 31, 2026	0.39	0.45	0.38	0.40	0.40	2.56%	78,627
Jul 30, 2026	0.36	0.42	0.36	0.39	0.39	-0.20%	80,230
Jul 29, 2026	0.44	0.46	0.35	0.39	0.39	-10.51%	118,281
Jul 28, 2026	0.46	0.48	0.41	0.44	0.44	-5.43%	99,581
Jul 27, 2026	0.49	0.49	0.45	0.46	0.46	0.11%	28,773
Jul 24, 2026	0.48	0.50	0.46	0.46	0.46	-4.27%	21,059
Jul 23, 2026	0.48	0.54	0.45	0.48	0.48	-0.60%	97,667
Jul 22, 2026	0.51	0.52	0.48	0.49	0.49	-5.62%	33,479
Jul 21, 2026	0.58	0.58	0.51	0.51	0.51	0.18%	22,690
Jul 20, 2026	0.56	0.56	0.46	0.51	0.51	-6.04%	47,221
Jul 17, 2026	0.54	0.55	0.48	0.55	0.55	3.02%	119,302
Jul 16, 2026	0.53	0.60	0.53	0.53	0.53	-3.86%	22,126
Jul 15, 2026	0.54	0.58	0.54	0.55	0.55	-0.49%	46,011
Jul 14, 2026	0.56	0.60	0.54	0.55	0.55	1.74%	32,314
Jul 13, 2026	0.53	0.59	0.53	0.54	0.54	-1.14%	25,066
Jul 10, 2026	0.55	0.59	0.53	0.55	0.55	3.20%	58,346
Jul 9, 2026	0.53	0.53	0.50	0.53	0.53	-0.24%	119,278
Jul 8, 2026	0.53	0.55	0.53	0.54	0.54	-1.05%	25,692
Jul 7, 2026	0.55	0.56	0.53	0.54	0.54	-0.61%	30,394
Jul 6, 2026	0.57	0.57	0.52	0.54	0.54	-0.64%	50,502
Jul 2, 2026	0.58	0.58	0.50	0.55	0.55	3.26%	54,608
Jul 1, 2026	0.52	0.59	0.50	0.53	0.53	1.96%	86,327
Jun 30, 2026	0.55	0.59	0.52	0.52	0.52	-5.57%	171,383
Jun 29, 2026	0.54	0.55	0.51	0.55	0.55	14.85%	111,307
Jun 26, 2026	0.59	0.59	0.48	0.48	0.48	-22.66%	134,975
Jun 25, 2026	0.60	0.65	0.55	0.62	0.62	-0.32%	73,564