Skip to main content
Research Frontiers Incorporated (REFR)
NASDAQ: REFR · Real-Time Price · USD
0.480
-0.141 (-22.66%)
At close: Jun 26, 2026, 4:00 PM EDT
0.535
+0.056 (11.64%)
After-hours: Jun 26, 2026, 6:52 PM EDT

Research Frontiers Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Jun 26, 20260.590.590.480.480.48-22.66%132,281
Jun 25, 20260.600.650.550.620.62-0.32%73,562
Jun 24, 20260.650.650.590.620.621.97%46,243
Jun 23, 20260.620.630.610.610.61-10,396
Jun 22, 20260.600.630.600.610.611.67%41,771
Jun 18, 20260.640.660.600.600.60-6.40%65,341
Jun 17, 20260.680.700.640.640.64-4.23%15,852
Jun 16, 20260.640.710.640.670.672.97%90,305
Jun 15, 20260.700.750.650.650.65-8.45%67,671
Jun 12, 20260.750.750.710.710.71-3.92%26,586
Jun 11, 20260.750.750.720.740.741.22%15,423
Jun 10, 20260.750.780.730.730.73-0.14%64,665
Jun 9, 20260.730.810.730.730.730.15%41,380
Jun 8, 20260.740.760.720.730.73-1.08%24,613
Jun 5, 20260.750.770.720.740.74-1.60%30,444
Jun 4, 20260.770.780.750.750.75-1.32%13,702
Jun 3, 20260.750.790.750.760.76-12,263
Jun 2, 20260.750.790.750.760.76-1.67%9,526
Jun 1, 20260.820.820.750.770.770.38%18,824
May 29, 20260.770.770.760.770.771.32%22,104
May 28, 20260.750.770.740.760.761.37%53,368
May 27, 20260.750.750.740.750.75-1.37%10,561
May 26, 20260.740.790.730.760.761.35%26,763
May 22, 20260.760.760.740.750.751.34%8,849
May 21, 20260.770.790.730.740.74-1.32%16,313
May 20, 20260.770.800.730.750.75-2.60%35,794
May 19, 20260.820.820.760.770.77-1.91%16,972
May 18, 20260.790.800.780.790.79-1.88%12,977
May 15, 20260.810.810.780.800.80-1.11%19,603
May 14, 20260.780.830.780.810.812.39%15,796
May 13, 20260.810.860.790.790.791.86%67,119
May 12, 20260.790.790.760.780.782.05%27,600
May 11, 20260.900.900.760.760.760.78%80,298
May 8, 20260.890.890.750.750.75-9.48%75,450
May 7, 20260.870.990.830.830.83-4.89%90,732
May 6, 20260.990.990.880.880.880.69%27,634
May 5, 20260.870.950.860.870.870.05%28,593
May 4, 20260.880.940.830.870.87-0.96%95,564
May 1, 20260.920.920.870.880.88-4.55%58,389
Apr 30, 20260.950.960.910.920.92-2.13%67,088
Apr 29, 20260.930.950.930.940.940.31%2,496
Apr 28, 20260.930.980.930.940.94-1.37%25,243
Apr 27, 20260.990.990.940.950.95-1.04%7,899
Apr 24, 20261.011.020.930.960.96-3.96%26,940
Apr 23, 20260.991.020.991.001.002.65%10,856
Apr 22, 20260.971.020.970.970.97-1.64%6,618
Apr 21, 20261.001.020.980.990.99-0.98%37,680
Apr 20, 20260.931.000.931.001.007.49%23,459
Apr 17, 20260.950.950.930.930.93-0.66%4,913
Apr 16, 20260.910.950.910.940.942.60%17,265
Apr 15, 20261.011.010.910.910.91-10.09%40,358
Apr 14, 20260.911.020.911.021.029.15%94,623
Apr 13, 20260.950.970.920.930.93-3.13%17,685
Apr 10, 20260.970.970.960.960.962.12%4,644
Apr 9, 20260.930.970.910.940.942.01%35,901
Apr 8, 20260.980.980.920.920.92-0.91%35,260
Apr 7, 20260.920.970.910.930.93-0.79%20,741
Apr 6, 20260.930.970.900.940.941.33%6,200
Apr 2, 20260.930.930.900.930.93-3.07%2,450
Apr 1, 20260.940.970.940.950.953.74%8,537
Mar 31, 20260.870.960.870.920.921.10%16,817
Mar 30, 20260.890.940.880.910.912.10%6,654
Mar 27, 20260.870.940.870.890.89-1.13%9,341
Mar 26, 20260.860.910.860.900.908.48%31,698
Mar 25, 20260.870.970.820.830.83-2.25%91,904
Mar 24, 20260.860.900.850.850.85-1.68%20,468
Mar 23, 20260.860.900.860.860.868.08%36,474
Mar 20, 20261.021.030.800.800.80-21.57%173,128
Mar 19, 20261.011.021.001.021.022.00%13,769
Mar 18, 20261.021.031.001.001.00-22,347
Mar 17, 20261.001.031.001.001.00-0.99%10,259
Mar 16, 20261.001.031.001.011.01-30,630
Mar 13, 20261.011.011.001.011.01-0.98%29,985
Mar 12, 20260.931.020.921.021.0212.86%27,944
Mar 11, 20260.930.950.900.900.90-2.40%26,205
Mar 10, 20260.970.970.920.930.93-1.49%40,086
Mar 9, 20260.960.970.940.940.94-4.08%20,837
Mar 6, 20260.991.010.960.980.98-1.01%48,034
Mar 5, 20261.051.050.990.990.99-1.98%41,034
Mar 4, 20261.001.051.001.011.01-13,124
Mar 3, 20261.011.100.981.011.01-1.94%23,057
Mar 2, 20261.021.101.021.031.033.50%20,478
Feb 27, 20261.031.050.981.001.001.14%87,288
Feb 26, 20261.141.140.980.980.98-11.35%75,996
Feb 25, 20261.131.131.111.111.110.91%5,491
Feb 24, 20261.121.121.071.101.10-0.90%13,603
Feb 23, 20261.131.131.101.111.11-15,671
Feb 20, 20261.031.131.031.111.117.77%48,027
Feb 19, 20261.021.051.021.031.031.98%18,649
Feb 18, 20261.041.091.001.011.01-0.98%33,770
Feb 17, 20261.021.121.021.021.022.00%8,242
Feb 13, 20261.041.090.981.001.00-2.91%72,501
Feb 12, 20261.051.081.011.031.03-0.96%33,926
Feb 11, 20261.051.061.021.041.04-46,390
Feb 10, 20261.021.081.021.041.040.97%14,397
Feb 9, 20261.111.171.001.031.03-8.04%134,283
Feb 6, 20261.111.251.111.121.12-0.88%26,547
Feb 5, 20261.131.141.091.131.13-30,868
Feb 4, 20261.151.181.111.131.13-2.59%17,982
Feb 3, 20261.151.201.151.161.161.75%26,089