Research Frontiers Incorporated (REFR)

NASDAQ: REFR · Real-Time Price · USD

0.7138

-0.0656 (-8.42%)

At close: Sep 23, 2026, 4:00 PM EDT

0.7098

-0.0040 (-0.56%)

Pre-market: Sep 24, 2026, 5:06 AM EDT

Research Frontiers Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Sep 23, 2026	0.76	0.76	0.66	0.71	0.71	-8.42%	229,197
Sep 22, 2026	0.74	0.81	0.61	0.78	0.78	2.69%	890,405
Sep 21, 2026	0.48	0.78	0.46	0.76	0.76	16.54%	5,530,055
Sep 18, 2026	0.39	0.94	0.36	0.65	0.65	68.49%	92,095,952
Sep 17, 2026	0.39	0.41	0.37	0.39	0.39	1.24%	48,935
Sep 16, 2026	0.37	0.41	0.34	0.38	0.38	6.00%	202,857
Sep 15, 2026	0.37	0.39	0.35	0.36	0.36	-5.46%	105,974
Sep 14, 2026	0.38	0.42	0.37	0.38	0.38	-2.06%	98,725
Sep 11, 2026	0.38	0.42	0.37	0.39	0.39	1.04%	52,380
Sep 10, 2026	0.40	0.40	0.39	0.39	0.39	-1.86%	95,593
Sep 9, 2026	0.39	0.40	0.38	0.39	0.39	-0.56%	61,150
Sep 8, 2026	0.41	0.42	0.37	0.39	0.39	-4.87%	242,824
Sep 4, 2026	0.41	0.43	0.40	0.41	0.41	1.12%	142,731
Sep 3, 2026	0.40	0.43	0.40	0.41	0.41	1.96%	63,031
Sep 2, 2026	0.45	0.46	0.40	0.40	0.40	-9.41%	102,573
Sep 1, 2026	0.47	0.47	0.43	0.44	0.44	-4.95%	408,753
Aug 31, 2026	0.47	0.47	0.45	0.47	0.47	1.08%	61,662
Aug 28, 2026	0.49	0.49	0.45	0.46	0.46	-4.72%	174,514
Aug 27, 2026	0.51	0.53	0.47	0.49	0.49	1.04%	352,178
Aug 26, 2026	0.48	0.50	0.46	0.48	0.48	0.44%	363,942
Aug 25, 2026	0.49	0.51	0.46	0.48	0.48	2.33%	182,107
Aug 24, 2026	0.44	0.49	0.43	0.47	0.47	4.92%	94,772
Aug 21, 2026	0.46	0.47	0.43	0.45	0.45	-1.09%	66,667
Aug 20, 2026	0.46	0.49	0.44	0.45	0.45	2.23%	128,860
Aug 19, 2026	0.42	0.46	0.40	0.44	0.44	4.81%	223,134
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%	78,469
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