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 — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$1.56$1.56136,400
2018-12-28$1.37$1.3737,600
2018-12-27$1.30$1.3044,300
2018-12-26$1.40$1.4030,500
2018-12-24$1.42$1.4215,600
2018-12-21$1.27$1.2771,600
2018-12-20$1.40$1.4042,100
2018-12-19$1.45$1.4524,800
2018-12-18$1.46$1.4617,500
2018-12-17$1.48$1.4870,000
2018-12-14$1.65$1.6553,500
2018-12-13$1.69$1.69159,200
2018-12-12$1.57$1.5740,600
2018-12-11$1.48$1.4852,900
2018-12-10$1.55$1.5557,100
2018-12-07$1.55$1.5542,200
2018-12-06$1.46$1.4625,400
2018-12-04$1.50$1.5012,100
2018-12-03$1.55$1.5519,500
2018-11-30$1.49$1.4947,000
2018-11-29$1.52$1.5238,800
2018-11-28$1.49$1.4952,300
2018-11-27$1.38$1.3828,100
2018-11-26$1.39$1.3931,000
2018-11-23$1.33$1.3331,200
2018-11-21$1.26$1.2684,400
2018-11-20$1.24$1.2439,900
2018-11-19$1.21$1.2153,300
2018-11-16$1.24$1.2427,200
2018-11-15$1.23$1.2332,500
2018-11-14$1.23$1.2325,800
2018-11-13$1.23$1.2316,300
2018-11-12$1.20$1.2037,300
2018-11-09$1.25$1.25136,900
2018-11-08$1.35$1.359,100
2018-11-07$1.34$1.3415,800
2018-11-06$1.26$1.2616,700
2018-11-05$1.31$1.3117,600
2018-11-02$1.30$1.3081,400
2018-11-01$1.40$1.4020,200
2018-10-31$1.40$1.4029,800
2018-10-30$1.34$1.3423,200
2018-10-29$1.38$1.3813,300
2018-10-26$1.40$1.4020,700
2018-10-25$1.36$1.3619,000
2018-10-24$1.33$1.3340,100
2018-10-23$1.36$1.3655,400
2018-10-22$1.38$1.3868,700
2018-10-19$1.41$1.4140,400
2018-10-18$1.48$1.48107,300
2018-10-17$1.48$1.48111,800
2018-10-16$1.58$1.5871,500
2018-10-15$1.65$1.6554,200
2018-10-12$1.70$1.7031,700
2018-10-11$1.74$1.7430,900
2018-10-10$1.71$1.7175,500
2018-10-09$1.75$1.7539,400
2018-10-08$1.76$1.7658,100
2018-10-05$1.70$1.7042,000
2018-10-04$1.80$1.8099,900
2018-10-03$1.80$1.80451,400
2018-10-02$1.76$1.76212,300
2018-10-01$1.63$1.6367,300
2018-09-28$1.57$1.5745,000
2018-09-27$1.50$1.50125,300
2018-09-26$1.65$1.65230,000
2018-09-25$1.65$1.65473,700
2018-09-24$1.44$1.44259,800
2018-09-21$1.21$1.2144,500
2018-09-20$1.31$1.3124,800
2018-09-19$1.29$1.2934,600
2018-09-18$1.32$1.3228,600
2018-09-17$1.33$1.33143,700
2018-09-14$1.41$1.41120,500
2018-09-13$1.43$1.43583,000
2018-09-12$1.27$1.2756,800
2018-09-11$1.24$1.2444,400
2018-09-10$1.27$1.27132,100
2018-09-07$1.19$1.1926,700
2018-09-06$1.13$1.1348,100
2018-09-05$1.13$1.1334,300
2018-09-04$1.10$1.1033,400
2018-08-31$1.15$1.1538,800
2018-08-30$1.08$1.0845,900
2018-08-29$1.17$1.1775,700
2018-08-28$1.15$1.15140,700
2018-08-27$1.24$1.24130,500
2018-08-24$1.26$1.26140,400
2018-08-23$1.18$1.18274,100
2018-08-22$1.09$1.0956,200
2018-08-21$1.02$1.0288,300
2018-08-20$1.02$1.02129,600
2018-08-17$0.89$0.8912,700
2018-08-16$0.88$0.8868,600
2018-08-15$0.88$0.8816,600
2018-08-14$0.89$0.8945,900
2018-08-13$0.86$0.8629,800
2018-08-10$0.90$0.908,100
2018-08-09$0.89$0.8912,600
2018-08-08$0.89$0.8918,300
2018-08-07$0.93$0.932,100
2018-08-06$0.93$0.935,500
2018-08-03$0.95$0.9516,900
2018-08-02$0.97$0.9719,200
2018-08-01$0.95$0.9516,000
2018-07-31$0.92$0.9258,100
2018-07-30$0.92$0.9211,800
2018-07-27$0.91$0.917,100
2018-07-26$0.92$0.9254,300
2018-07-25$0.85$0.8523,600
2018-07-24$0.87$0.8744,100
2018-07-23$0.85$0.8520,700
2018-07-20$0.83$0.838,700
2018-07-19$0.82$0.8214,900
2018-07-18$0.85$0.8510,500
2018-07-17$0.83$0.839,000
2018-07-16$0.80$0.8027,300
2018-07-13$0.83$0.8311,500
2018-07-12$0.87$0.8742,000
2018-07-11$0.84$0.8430,400
2018-07-10$0.85$0.8525,100
2018-07-09$0.91$0.9140,100
2018-07-06$0.92$0.92345,400
2018-07-05$0.81$0.8115,900
2018-07-03$0.79$0.7910,900
2018-07-02$0.82$0.8211,100
2018-06-29$0.82$0.8241,100
2018-06-28$0.79$0.7924,200
2018-06-27$0.79$0.7948,500
2018-06-26$0.81$0.8159,200
2018-06-25$0.79$0.79172,900
2018-06-22$0.60$0.6051,300
2018-06-21$0.82$0.823,500
2018-06-20$0.85$0.8513,300
2018-06-19$0.84$0.8416,000
2018-06-18$0.85$0.855,300
2018-06-15$0.80$0.8037,800
2018-06-14$0.87$0.8717,700
2018-06-13$0.88$0.8810,700
2018-06-12$0.91$0.9111,400
2018-06-11$0.90$0.905,300
2018-06-08$0.89$0.8939,300
2018-06-07$0.94$0.9433,700
2018-06-06$0.87$0.8738,800
2018-06-05$0.93$0.9324,500
2018-06-04$0.84$0.8436,700
2018-06-01$0.85$0.8536,200
2018-05-31$0.81$0.8162,300
2018-05-30$0.80$0.8026,200
2018-05-29$0.83$0.8311,600
2018-05-25$0.85$0.8518,100
2018-05-24$0.84$0.8449,200
2018-05-23$0.84$0.8441,800
2018-05-22$0.84$0.8461,100
2018-05-21$0.82$0.82114,700
2018-05-18$0.86$0.8653,300
2018-05-17$0.86$0.86106,000
2018-05-16$0.87$0.87108,800
2018-05-15$0.93$0.93110,500
2018-05-14$0.86$0.8644,200
2018-05-11$0.85$0.8579,700
2018-05-10$0.86$0.8618,200
2018-05-09$0.89$0.89102,700
2018-05-08$0.87$0.8744,300
2018-05-07$0.90$0.9052,900
2018-05-04$0.92$0.929,200
2018-05-03$0.87$0.8744,800
2018-05-02$0.93$0.9353,300
2018-05-01$0.93$0.9310,500
2018-04-30$0.95$0.9565,700
2018-04-27$0.95$0.956,700
2018-04-26$0.94$0.9428,700
2018-04-25$0.95$0.9537,900
2018-04-24$0.94$0.9468,900
2018-04-23$1.00$1.0029,300
2018-04-20$1.00$1.0012,800
2018-04-19$1.00$1.0070,100
2018-04-18$0.99$0.9952,900
2018-04-17$1.00$1.0073,600
2018-04-16$0.99$0.9927,800
2018-04-13$1.04$1.0434,300
2018-04-12$1.02$1.0258,400
2018-04-11$1.04$1.0487,100
2018-04-10$1.04$1.04489,200
2018-04-09$1.17$1.17461,900
2018-04-06$1.03$1.0396,900
2018-04-05$1.05$1.05155,600
2018-04-04$1.13$1.13165,800
2018-04-03$1.14$1.14732,800
2018-04-02$1.02$1.0272,100
2018-03-29$0.98$0.9883,300
2018-03-28$0.96$0.9636,400
2018-03-27$0.94$0.9434,500
2018-03-26$0.92$0.9222,000
2018-03-23$0.92$0.9210,600
2018-03-22$0.92$0.9223,600
2018-03-21$0.96$0.966,500
2018-03-20$0.96$0.967,800
2018-03-19$1.00$1.007,100
2018-03-16$1.00$1.0041,000
2018-03-15$1.00$1.00195,600
2018-03-14$0.98$0.9817,600
2018-03-13$0.93$0.9316,500
2018-03-12$0.99$0.9925,600
2018-03-09$0.97$0.9784,400
2018-03-08$0.91$0.9154,900
2018-03-07$0.89$0.8953,500
2018-03-06$0.87$0.8714,200
2018-03-05$0.90$0.9016,500
2018-03-02$0.86$0.8659,100
2018-03-01$0.91$0.912,100
2018-02-28$0.94$0.943,600
2018-02-27$0.93$0.934,000
2018-02-26$0.91$0.9119,700
2018-02-23$0.92$0.923,600
2018-02-22$0.88$0.8853,200
2018-02-21$0.90$0.907,500
2018-02-20$0.98$0.989,400
2018-02-16$0.96$0.9614,400
2018-02-15$0.89$0.8925,700
2018-02-14$0.88$0.8849,500
2018-02-13$0.90$0.9043,300
2018-02-12$0.90$0.9081,800
2018-02-09$0.89$0.89115,000
2018-02-08$0.90$0.9056,400
2018-02-07$0.92$0.9222,100
2018-02-06$0.86$0.86119,100
2018-02-05$0.88$0.8832,100
2018-02-02$0.91$0.9170,000
2018-02-01$0.96$0.9615,900
2018-01-31$0.97$0.9720,900
2018-01-30$0.97$0.9759,100
2018-01-29$1.01$1.0174,700
2018-01-26$1.03$1.0337,400
2018-01-25$1.03$1.037,500
2018-01-24$1.04$1.044,500
2018-01-23$1.02$1.0240,200
2018-01-22$1.03$1.036,400
2018-01-19$1.03$1.038,900
2018-01-18$1.06$1.0632,700
2018-01-17$1.09$1.0922,200
2018-01-16$1.09$1.0957,100
2018-01-12$1.13$1.1363,300
2018-01-11$1.10$1.1026,600
2018-01-10$1.11$1.11373,900
2018-01-09$1.09$1.0921,900
2018-01-08$1.12$1.1212,000
2018-01-05$1.07$1.0715,500
2018-01-04$1.10$1.1017,000
2018-01-03$1.11$1.1131,400
2018-01-02$1.04$1.0440,700