NASDAQ:REFR | Historical Stock Price | RESEARCH FRONTIERS INC

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1986-07-08 to 2026-09-03
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.47$1.11$2.63$6.25$14.85$35.311986-07-082026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2010

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2010-12-31$5.29$5.2974,800
2010-12-30$5.03$5.0333,000
2010-12-29$5.10$5.1061,100
2010-12-28$4.93$4.9349,100
2010-12-27$4.95$4.9538,200
2010-12-23$5.00$5.0039,500
2010-12-22$5.05$5.0537,900
2010-12-21$5.10$5.1031,100
2010-12-20$5.10$5.1086,000
2010-12-17$5.06$5.0646,100
2010-12-16$5.02$5.0234,400
2010-12-15$5.12$5.1270,500
2010-12-14$5.09$5.0962,100
2010-12-13$5.25$5.2595,500
2010-12-10$5.03$5.0381,200
2010-12-09$4.90$4.9070,000
2010-12-08$4.84$4.8430,000
2010-12-07$4.89$4.8952,500
2010-12-06$4.92$4.9215,100
2010-12-03$4.94$4.9421,000
2010-12-02$4.90$4.9014,900
2010-12-01$4.96$4.9634,700
2010-11-30$5.08$5.0867,000
2010-11-29$5.25$5.25115,900
2010-11-26$5.00$5.0028,200
2010-11-24$5.00$5.0058,600
2010-11-23$4.92$4.9233,600
2010-11-22$4.92$4.9264,900
2010-11-19$4.90$4.9050,100
2010-11-18$4.90$4.9052,500
2010-11-17$4.60$4.6022,100
2010-11-16$4.45$4.4541,600
2010-11-15$4.51$4.5162,600
2010-11-12$4.35$4.3536,500
2010-11-11$4.42$4.4227,700
2010-11-10$4.37$4.3737,800
2010-11-09$4.34$4.3437,800
2010-11-08$4.35$4.3556,500
2010-11-05$4.24$4.2412,000
2010-11-04$4.19$4.1942,500
2010-11-03$4.16$4.1620,300
2010-11-02$4.11$4.117,100
2010-11-01$4.08$4.0812,500
2010-10-29$4.09$4.0919,700
2010-10-28$4.01$4.0115,600
2010-10-27$4.05$4.0526,200
2010-10-26$4.17$4.175,400
2010-10-25$4.17$4.178,200
2010-10-22$4.09$4.0928,400
2010-10-21$4.05$4.0518,900
2010-10-20$4.18$4.1820,100
2010-10-19$4.05$4.0523,300
2010-10-18$4.08$4.0817,900
2010-10-15$4.03$4.0323,700
2010-10-14$4.07$4.0727,000
2010-10-13$4.00$4.0046,000
2010-10-12$4.00$4.0025,000
2010-10-11$3.99$3.9916,400
2010-10-08$3.97$3.974,300
2010-10-07$3.96$3.9630,000
2010-10-06$4.00$4.0011,000
2010-10-05$3.95$3.9513,800
2010-10-04$4.06$4.0616,000
2010-10-01$4.05$4.0534,500
2010-09-30$3.96$3.9617,100
2010-09-29$3.95$3.9531,000
2010-09-28$4.02$4.0222,200
2010-09-27$4.15$4.1539,100
2010-09-24$4.31$4.3115,900
2010-09-23$4.33$4.3310,000
2010-09-22$4.24$4.2443,400
2010-09-21$4.29$4.2970,500
2010-09-20$4.15$4.1527,900
2010-09-17$4.12$4.1239,600
2010-09-16$4.12$4.1242,600
2010-09-15$3.85$3.8518,700
2010-09-14$3.95$3.953,500
2010-09-13$3.96$3.9610,800
2010-09-10$3.94$3.9429,800
2010-09-09$3.98$3.9829,100
2010-09-08$4.05$4.0514,600
2010-09-07$3.97$3.9711,500
2010-09-03$3.91$3.919,400
2010-09-02$3.91$3.9115,400
2010-09-01$4.03$4.0316,600
2010-08-31$4.01$4.017,500
2010-08-30$4.00$4.0012,700
2010-08-27$4.07$4.076,600
2010-08-26$4.07$4.0710,300
2010-08-25$4.11$4.115,800
2010-08-24$4.10$4.1013,000
2010-08-23$4.26$4.269,900
2010-08-20$4.35$4.3512,900
2010-08-19$4.34$4.3454,800
2010-08-18$4.45$4.4553,700
2010-08-17$4.18$4.1829,700
2010-08-16$3.98$3.9817,200
2010-08-13$4.11$4.117,400
2010-08-12$4.09$4.0924,600
2010-08-11$4.18$4.1814,100
2010-08-10$4.28$4.2815,400
2010-08-09$4.34$4.3411,400
2010-08-06$4.34$4.3431,900
2010-08-05$4.43$4.4324,500
2010-08-04$4.37$4.3718,200
2010-08-03$4.40$4.4035,300
2010-08-02$4.37$4.3740,700
2010-07-30$4.68$4.6831,600
2010-07-29$4.75$4.7535,100
2010-07-28$4.74$4.7460,700
2010-07-27$4.91$4.9163,100
2010-07-26$4.58$4.5832,400
2010-07-23$4.56$4.5673,100
2010-07-22$4.49$4.4983,700
2010-07-21$4.37$4.3741,900
2010-07-20$4.09$4.0933,000
2010-07-19$4.09$4.0919,500
2010-07-16$4.12$4.1239,100
2010-07-15$4.17$4.1726,200
2010-07-14$4.10$4.1076,600
2010-07-13$4.03$4.0366,600
2010-07-12$3.80$3.8040,700
2010-07-09$3.77$3.7727,500
2010-07-08$3.74$3.7467,600
2010-07-07$3.63$3.6377,700
2010-07-06$4.03$4.0360,800
2010-07-02$4.05$4.0586,800
2010-07-01$4.40$4.4041,800
2010-06-30$4.45$4.4562,700
2010-06-29$4.53$4.5341,300
2010-06-28$4.46$4.4695,300
2010-06-25$4.70$4.70195,100
2010-06-24$4.58$4.58277,800
2010-06-23$4.20$4.20103,600
2010-06-22$4.16$4.16126,300
2010-06-21$4.25$4.25220,300
2010-06-18$3.70$3.7091,800
2010-06-17$3.50$3.5065,200
2010-06-16$3.20$3.203,000
2010-06-15$3.12$3.1254,500
2010-06-14$3.22$3.2217,500
2010-06-11$3.18$3.1833,300
2010-06-10$3.14$3.146,900
2010-06-09$3.05$3.059,900
2010-06-08$3.09$3.0919,800
2010-06-07$3.07$3.0720,000
2010-06-04$3.05$3.0534,400
2010-06-03$3.07$3.0715,200
2010-06-02$3.08$3.0813,600
2010-06-01$3.01$3.016,900
2010-05-28$3.10$3.108,700
2010-05-27$3.08$3.0810,400
2010-05-26$3.05$3.0521,400
2010-05-25$3.06$3.0622,900
2010-05-24$3.34$3.3436,200
2010-05-21$3.01$3.0143,200
2010-05-20$3.11$3.1120,000
2010-05-19$3.30$3.3017,900
2010-05-18$3.42$3.429,500
2010-05-17$3.46$3.466,700
2010-05-14$3.44$3.4442,000
2010-05-13$3.16$3.1632,800
2010-05-12$3.24$3.247,400
2010-05-11$3.30$3.3016,600
2010-05-10$3.35$3.3510,600
2010-05-07$3.13$3.1327,000
2010-05-06$2.98$2.9857,300
2010-05-05$3.40$3.4035,300
2010-05-04$3.26$3.2610,900
2010-05-03$3.30$3.3012,100
2010-04-30$3.21$3.2122,500
2010-04-29$3.42$3.4212,100
2010-04-28$3.50$3.5016,700
2010-04-27$3.49$3.4924,300
2010-04-26$3.50$3.5055,100
2010-04-23$3.66$3.6656,700
2010-04-22$3.58$3.5870,000
2010-04-21$3.30$3.3048,600
2010-04-20$3.07$3.0723,100
2010-04-19$3.14$3.1412,800
2010-04-16$3.15$3.159,500
2010-04-15$3.22$3.224,100
2010-04-14$3.09$3.0917,700
2010-04-13$3.28$3.2820,800
2010-04-12$3.55$3.5527,900
2010-04-09$3.58$3.58103,900
2010-04-08$3.12$3.1227,000
2010-04-07$3.15$3.1582,100
2010-04-06$2.85$2.8527,200
2010-04-05$2.90$2.9025,500
2010-04-01$2.79$2.795,900
2010-03-31$2.79$2.795,600
2010-03-30$2.82$2.8221,500
2010-03-29$2.80$2.807,800
2010-03-26$2.90$2.9010,200
2010-03-25$2.99$2.995,500
2010-03-24$3.00$3.0011,900
2010-03-23$3.01$3.017,000
2010-03-22$3.12$3.1215,500
2010-03-19$3.10$3.1030,500
2010-03-18$3.04$3.0416,800
2010-03-17$3.01$3.0110,400
2010-03-16$3.00$3.00900
2010-03-15$3.01$3.019,000
2010-03-12$2.97$2.9718,600
2010-03-11$2.90$2.9020,400
2010-03-10$2.97$2.9717,900
2010-03-09$2.87$2.8723,100
2010-03-08$2.78$2.7828,500
2010-03-05$2.85$2.8533,900
2010-03-04$3.04$3.0441,000
2010-03-03$3.00$3.0063,600
2010-03-02$3.00$3.0011,800
2010-03-01$3.05$3.0551,200
2010-02-26$2.83$2.834,000
2010-02-25$2.75$2.7521,800
2010-02-24$2.61$2.6139,200
2010-02-23$2.81$2.818,700
2010-02-22$2.86$2.866,600
2010-02-19$2.84$2.8421,500
2010-02-18$2.76$2.7612,600
2010-02-17$2.91$2.919,600
2010-02-16$2.92$2.9226,500
2010-02-12$2.94$2.9414,300
2010-02-11$2.93$2.9315,000
2010-02-10$3.02$3.024,400
2010-02-09$3.04$3.0422,300
2010-02-08$2.75$2.753,900
2010-02-05$3.00$3.0011,300
2010-02-04$3.07$3.0726,600
2010-02-03$3.32$3.3212,600
2010-02-02$3.37$3.377,200
2010-02-01$3.32$3.3229,800
2010-01-29$3.00$3.006,500
2010-01-28$3.15$3.1518,500
2010-01-27$2.93$2.9317,100
2010-01-26$3.06$3.0634,600
2010-01-25$3.17$3.1726,300
2010-01-22$3.15$3.1513,100
2010-01-21$3.04$3.0453,600
2010-01-20$3.18$3.1811,000
2010-01-19$3.39$3.3928,500
2010-01-15$3.35$3.3519,600
2010-01-14$3.47$3.479,800
2010-01-13$3.52$3.5215,000
2010-01-12$3.50$3.5018,100
2010-01-11$3.59$3.5917,800
2010-01-08$3.53$3.5314,600
2010-01-07$3.76$3.7616,600
2010-01-06$3.59$3.5927,100
2010-01-05$3.66$3.6620,800
2010-01-04$3.71$3.718,900