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 — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$1.31$1.3185,200
2025-12-30$1.32$1.3248,500
2025-12-29$1.37$1.37148,700
2025-12-26$1.38$1.3896,000
2025-12-24$1.39$1.3916,700
2025-12-23$1.41$1.4162,800
2025-12-22$1.45$1.4577,100
2025-12-19$1.46$1.46100,100
2025-12-18$1.48$1.48102,000
2025-12-17$1.44$1.4436,600
2025-12-16$1.48$1.4851,000
2025-12-15$1.56$1.5660,900
2025-12-12$1.54$1.5430,300
2025-12-11$1.56$1.5632,100
2025-12-10$1.58$1.5848,500
2025-12-09$1.59$1.5941,500
2025-12-08$1.59$1.5960,100
2025-12-05$1.62$1.6266,500
2025-12-04$1.57$1.5734,800
2025-12-03$1.65$1.6546,300
2025-12-02$1.63$1.6352,500
2025-12-01$1.78$1.7816,900
2025-11-28$1.89$1.8924,200
2025-11-26$1.91$1.9135,400
2025-11-25$1.93$1.9322,700
2025-11-24$2.08$2.08154,700
2025-11-21$1.99$1.9997,400
2025-11-20$1.76$1.7653,300
2025-11-19$1.76$1.7625,200
2025-11-18$1.70$1.7023,300
2025-11-17$1.62$1.6277,000
2025-11-14$1.81$1.8196,900
2025-11-13$1.87$1.87113,100
2025-11-12$1.80$1.8043,400
2025-11-11$1.74$1.7436,700
2025-11-10$1.57$1.5783,700
2025-11-07$1.58$1.5896,500
2025-11-06$1.60$1.6041,500
2025-11-05$1.71$1.7146,900
2025-11-04$1.75$1.7563,800
2025-11-03$1.88$1.8824,600
2025-10-31$1.94$1.9472,000
2025-10-30$1.84$1.84186,800
2025-10-29$2.03$2.03104,700
2025-10-28$2.02$2.02215,000
2025-10-27$2.36$2.36904,100
2025-10-24$2.00$2.00208,500
2025-10-23$1.64$1.64112,100
2025-10-22$1.65$1.6565,900
2025-10-21$1.69$1.6927,000
2025-10-20$1.73$1.7334,200
2025-10-17$1.64$1.6434,800
2025-10-16$1.62$1.62112,600
2025-10-15$1.78$1.7847,400
2025-10-14$1.81$1.81120,700
2025-10-13$1.82$1.8277,400
2025-10-10$1.82$1.82103,200
2025-10-09$1.89$1.8956,300
2025-10-08$1.88$1.8864,200
2025-10-07$1.79$1.79115,500
2025-10-06$1.54$1.5468,400
2025-10-03$1.44$1.4447,100
2025-10-02$1.45$1.4563,500
2025-10-01$1.57$1.5716,700
2025-09-30$1.59$1.5986,400
2025-09-29$1.51$1.5135,200
2025-09-26$1.54$1.5424,800
2025-09-25$1.56$1.5675,100
2025-09-24$1.69$1.69156,700
2025-09-23$1.42$1.4227,700
2025-09-22$1.41$1.4129,100
2025-09-19$1.43$1.4358,200
2025-09-18$1.40$1.4018,900
2025-09-17$1.38$1.3811,200
2025-09-16$1.35$1.3525,300
2025-09-15$1.26$1.2643,100
2025-09-12$1.25$1.2549,800
2025-09-11$1.27$1.2710,200
2025-09-10$1.29$1.2910,700
2025-09-09$1.25$1.2541,300
2025-09-08$1.30$1.304,900
2025-09-05$1.29$1.2934,000
2025-09-04$1.30$1.3025,400
2025-09-03$1.32$1.325,400
2025-09-02$1.34$1.3415,900
2025-08-29$1.35$1.3552,200
2025-08-28$1.47$1.4713,000
2025-08-27$1.40$1.4010,700
2025-08-26$1.40$1.4015,500
2025-08-25$1.38$1.3827,300
2025-08-22$1.40$1.4015,300
2025-08-21$1.37$1.3722,400
2025-08-20$1.39$1.3922,000
2025-08-19$1.43$1.4384,000
2025-08-18$1.47$1.4735,500
2025-08-15$1.47$1.4728,400
2025-08-14$1.52$1.529,100
2025-08-13$1.51$1.5117,800
2025-08-12$1.50$1.5020,000
2025-08-11$1.50$1.5018,800
2025-08-08$1.53$1.5349,900
2025-08-07$1.57$1.5751,700
2025-08-06$1.53$1.5328,800
2025-08-05$1.57$1.5710,300
2025-08-04$1.58$1.5863,900
2025-08-01$1.60$1.6034,500
2025-07-31$1.58$1.5894,900
2025-07-30$1.65$1.658,900
2025-07-29$1.62$1.6252,700
2025-07-28$1.71$1.7117,500
2025-07-25$1.84$1.8493,300
2025-07-24$1.81$1.8124,700
2025-07-23$1.83$1.8312,300
2025-07-22$1.79$1.7947,800
2025-07-21$1.72$1.7217,600
2025-07-18$1.80$1.8010,000
2025-07-17$1.79$1.7958,500
2025-07-16$1.76$1.7675,900
2025-07-15$1.66$1.6620,500
2025-07-14$1.60$1.6051,800
2025-07-11$1.58$1.5812,000
2025-07-10$1.59$1.5911,400
2025-07-09$1.51$1.5125,700
2025-07-08$1.49$1.4968,300
2025-07-07$1.57$1.5746,500
2025-07-03$1.64$1.6412,200
2025-07-02$1.61$1.6110,200
2025-07-01$1.55$1.5516,000
2025-06-30$1.64$1.6441,700
2025-06-27$1.65$1.6524,900
2025-06-26$1.68$1.6814,500
2025-06-25$1.67$1.6713,700
2025-06-24$1.81$1.8141,900
2025-06-23$1.68$1.6834,100
2025-06-20$1.74$1.7433,100
2025-06-18$1.75$1.7543,100
2025-06-17$1.78$1.7849,900
2025-06-16$1.82$1.8232,800
2025-06-13$1.87$1.8722,400
2025-06-12$1.90$1.9019,300
2025-06-11$1.92$1.9219,400
2025-06-10$1.91$1.9133,400
2025-06-09$2.00$2.0029,800
2025-06-06$2.00$2.0027,500
2025-06-05$2.02$2.0222,800
2025-06-04$2.00$2.0044,800
2025-06-03$2.05$2.0579,800
2025-06-02$1.99$1.9996,800
2025-05-30$1.83$1.8338,600
2025-05-29$1.83$1.8373,200
2025-05-28$1.84$1.84128,900
2025-05-27$1.68$1.6817,900
2025-05-23$1.70$1.7038,000
2025-05-22$1.73$1.7397,100
2025-05-21$1.66$1.6655,000
2025-05-20$1.60$1.6028,900
2025-05-19$1.62$1.6234,700
2025-05-16$1.67$1.6739,000
2025-05-15$1.73$1.7359,200
2025-05-14$1.64$1.6417,700
2025-05-13$1.64$1.6440,000
2025-05-12$1.72$1.72112,700
2025-05-09$1.59$1.59197,100
2025-05-08$1.19$1.1913,700
2025-05-07$1.16$1.1624,500
2025-05-06$1.15$1.155,100
2025-05-05$1.16$1.1620,200
2025-05-02$1.13$1.1315,700
2025-05-01$1.06$1.062,400
2025-04-30$1.05$1.0519,600
2025-04-29$1.07$1.0721,700
2025-04-28$1.03$1.038,000
2025-04-25$1.06$1.0630,900
2025-04-24$1.04$1.0411,800
2025-04-23$1.05$1.0527,800
2025-04-22$1.02$1.026,700
2025-04-21$1.02$1.0219,500
2025-04-17$1.02$1.0219,100
2025-04-16$1.01$1.0121,400
2025-04-15$1.01$1.0122,000
2025-04-14$0.97$0.9731,800
2025-04-11$0.97$0.9717,600
2025-04-10$0.98$0.9818,800
2025-04-09$0.99$0.9986,300
2025-04-08$0.99$0.9931,400
2025-04-07$1.02$1.02119,700
2025-04-04$1.07$1.0744,100
2025-04-03$1.14$1.1417,900
2025-04-02$1.13$1.1346,200
2025-04-01$1.13$1.1331,600
2025-03-31$1.13$1.1327,700
2025-03-28$1.14$1.1436,700
2025-03-27$1.19$1.1926,500
2025-03-26$1.19$1.1913,300
2025-03-25$1.21$1.2143,900
2025-03-24$1.16$1.1693,900
2025-03-21$1.21$1.2142,500
2025-03-20$1.25$1.2519,900
2025-03-19$1.26$1.265,900
2025-03-18$1.25$1.2523,400
2025-03-17$1.27$1.2714,000
2025-03-14$1.29$1.2957,100
2025-03-13$1.34$1.3454,700
2025-03-12$1.28$1.2812,000
2025-03-11$1.29$1.2915,500
2025-03-10$1.25$1.2522,500
2025-03-07$1.34$1.3433,900
2025-03-06$1.33$1.3334,000
2025-03-05$1.27$1.2712,100
2025-03-04$1.25$1.254,600
2025-03-03$1.25$1.2547,600
2025-02-28$1.35$1.3519,100
2025-02-27$1.31$1.3126,100
2025-02-26$1.38$1.3830,900
2025-02-25$1.38$1.384,000
2025-02-24$1.38$1.3818,700
2025-02-21$1.37$1.378,000
2025-02-20$1.39$1.399,200
2025-02-19$1.40$1.4013,800
2025-02-18$1.38$1.3839,500
2025-02-14$1.44$1.4431,100
2025-02-13$1.44$1.4419,700
2025-02-12$1.46$1.4618,600
2025-02-11$1.56$1.5653,000
2025-02-10$1.40$1.4039,000
2025-02-07$1.44$1.4492,600
2025-02-06$1.49$1.4946,000
2025-02-05$1.51$1.5134,600
2025-02-04$1.51$1.5154,500
2025-02-03$1.52$1.5261,100
2025-01-31$1.54$1.545,600
2025-01-30$1.55$1.5535,200
2025-01-29$1.54$1.5415,000
2025-01-28$1.59$1.5961,300
2025-01-27$1.57$1.5723,500
2025-01-24$1.60$1.6067,100
2025-01-23$1.61$1.6160,900
2025-01-22$1.61$1.6186,100
2025-01-21$1.60$1.6055,200
2025-01-17$1.66$1.6615,000
2025-01-16$1.67$1.6720,300
2025-01-15$1.69$1.6922,500
2025-01-14$1.62$1.6222,600
2025-01-13$1.64$1.6420,200
2025-01-10$1.69$1.6922,000
2025-01-08$1.68$1.6849,200
2025-01-07$1.67$1.6713,700
2025-01-06$1.67$1.6725,200
2025-01-03$1.66$1.6612,700
2025-01-02$1.70$1.7012,600