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 — 2011

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2011-12-30$3.39$3.3950,000
2011-12-29$3.38$3.3864,200
2011-12-28$3.35$3.3537,800
2011-12-27$3.33$3.3335,700
2011-12-23$3.25$3.2544,100
2011-12-22$3.34$3.3433,700
2011-12-21$3.21$3.2177,100
2011-12-20$3.25$3.2532,200
2011-12-19$3.30$3.3025,500
2011-12-16$3.33$3.3369,500
2011-12-15$3.36$3.3668,400
2011-12-14$3.14$3.1430,500
2011-12-13$3.19$3.1983,500
2011-12-12$3.47$3.4714,800
2011-12-09$3.62$3.6212,500
2011-12-08$3.64$3.6421,400
2011-12-07$3.67$3.6718,900
2011-12-06$3.68$3.6810,500
2011-12-05$3.74$3.7425,900
2011-12-02$3.65$3.6511,300
2011-12-01$3.71$3.7113,300
2011-11-30$3.79$3.7921,400
2011-11-29$3.87$3.8717,100
2011-11-28$3.75$3.759,400
2011-11-25$3.89$3.8910,200
2011-11-23$3.80$3.807,600
2011-11-22$3.76$3.7628,100
2011-11-21$3.76$3.7624,600
2011-11-18$3.80$3.8053,000
2011-11-17$3.92$3.9227,000
2011-11-16$3.70$3.7027,800
2011-11-15$3.68$3.6822,000
2011-11-14$3.50$3.5065,800
2011-11-11$3.58$3.5828,400
2011-11-10$3.70$3.7012,700
2011-11-09$3.65$3.658,400
2011-11-08$3.74$3.7435,200
2011-11-07$3.85$3.8515,700
2011-11-04$3.86$3.8610,600
2011-11-03$3.95$3.955,900
2011-11-02$3.92$3.9216,400
2011-11-01$3.85$3.8518,200
2011-10-31$3.85$3.8524,000
2011-10-28$3.99$3.996,900
2011-10-27$3.99$3.9923,700
2011-10-26$3.99$3.9918,700
2011-10-25$3.91$3.9148,100
2011-10-24$3.90$3.9018,200
2011-10-21$4.11$4.117,300
2011-10-20$4.01$4.0152,200
2011-10-19$4.25$4.2510,900
2011-10-18$4.21$4.2116,700
2011-10-17$4.20$4.2019,700
2011-10-14$4.30$4.308,900
2011-10-13$4.30$4.3017,700
2011-10-12$4.30$4.3032,300
2011-10-11$4.45$4.4520,600
2011-10-10$4.55$4.5528,200
2011-10-07$4.44$4.4431,500
2011-10-06$4.26$4.2695,500
2011-10-05$3.73$3.7343,800
2011-10-04$3.65$3.6585,600
2011-10-03$3.50$3.5012,500
2011-09-30$3.78$3.7829,200
2011-09-29$3.68$3.6818,400
2011-09-28$3.65$3.6510,900
2011-09-27$3.60$3.6022,600
2011-09-26$3.44$3.4432,100
2011-09-23$3.45$3.4534,900
2011-09-22$3.64$3.6443,600
2011-09-21$3.75$3.7515,000
2011-09-20$3.86$3.8616,400
2011-09-19$3.76$3.766,200
2011-09-16$3.88$3.8823,800
2011-09-15$3.95$3.9514,300
2011-09-14$4.04$4.0425,400
2011-09-13$3.86$3.8661,700
2011-09-12$3.96$3.967,500
2011-09-09$3.90$3.907,700
2011-09-08$4.05$4.0519,400
2011-09-07$3.93$3.933,300
2011-09-06$3.92$3.9210,700
2011-09-02$4.00$4.0047,300
2011-09-01$4.01$4.0111,800
2011-08-31$4.12$4.1219,100
2011-08-30$3.96$3.9620,500
2011-08-29$3.79$3.7941,400
2011-08-26$4.00$4.0030,000
2011-08-25$4.04$4.0413,500
2011-08-24$4.02$4.0219,400
2011-08-23$3.98$3.9866,400
2011-08-22$3.73$3.7327,800
2011-08-19$3.74$3.7421,800
2011-08-18$3.79$3.7912,900
2011-08-17$3.87$3.8716,400
2011-08-16$3.90$3.9025,700
2011-08-15$3.95$3.9525,900
2011-08-12$4.14$4.149,800
2011-08-11$4.13$4.1319,600
2011-08-10$3.91$3.913,400
2011-08-09$3.90$3.9052,800
2011-08-08$3.69$3.6987,100
2011-08-05$3.97$3.9763,300
2011-08-04$4.25$4.2538,400
2011-08-03$4.69$4.6912,700
2011-08-02$4.63$4.6333,900
2011-08-01$4.69$4.6932,100
2011-07-29$4.36$4.3631,300
2011-07-28$4.36$4.3623,000
2011-07-27$4.39$4.3912,600
2011-07-26$4.41$4.4115,400
2011-07-25$4.50$4.5019,100
2011-07-22$4.65$4.6542,600
2011-07-21$4.50$4.5054,100
2011-07-20$4.31$4.3114,700
2011-07-19$4.25$4.2523,700
2011-07-18$4.00$4.0017,000
2011-07-15$3.98$3.9819,900
2011-07-14$3.91$3.9127,700
2011-07-13$3.96$3.9617,700
2011-07-12$3.88$3.8840,700
2011-07-11$3.97$3.9745,800
2011-07-08$4.12$4.12144,700
2011-07-07$4.12$4.1275,400
2011-07-06$4.25$4.2564,900
2011-07-05$4.50$4.5017,500
2011-07-01$4.62$4.628,900
2011-06-30$4.57$4.5719,000
2011-06-29$4.54$4.5452,500
2011-06-28$4.77$4.7716,200
2011-06-27$4.77$4.7735,900
2011-06-24$4.59$4.5985,000
2011-06-23$4.73$4.7330,500
2011-06-22$4.74$4.7422,300
2011-06-21$4.87$4.8734,900
2011-06-20$4.82$4.8228,600
2011-06-17$4.72$4.7222,400
2011-06-16$4.72$4.7223,400
2011-06-15$4.72$4.7219,800
2011-06-14$4.80$4.8048,500
2011-06-13$4.84$4.8431,700
2011-06-10$4.86$4.8647,700
2011-06-09$4.72$4.7242,200
2011-06-08$4.73$4.7341,400
2011-06-07$4.82$4.8260,300
2011-06-06$4.92$4.9220,000
2011-06-03$4.95$4.9523,000
2011-06-02$5.11$5.1149,400
2011-06-01$5.00$5.0099,000
2011-05-31$5.17$5.1751,700
2011-05-27$5.44$5.4454,700
2011-05-26$5.15$5.1540,500
2011-05-25$5.02$5.0236,800
2011-05-24$5.09$5.0923,700
2011-05-23$5.09$5.0955,200
2011-05-20$5.21$5.2117,500
2011-05-19$5.24$5.2434,800
2011-05-18$5.30$5.3022,500
2011-05-17$5.41$5.4127,600
2011-05-16$5.47$5.4721,900
2011-05-13$5.67$5.6727,000
2011-05-12$5.70$5.7019,900
2011-05-11$5.78$5.7835,800
2011-05-10$5.83$5.8328,900
2011-05-09$5.56$5.5624,000
2011-05-06$5.45$5.4538,000
2011-05-05$5.44$5.4445,400
2011-05-04$5.76$5.7630,400
2011-05-03$5.85$5.8541,000
2011-05-02$6.05$6.0553,000
2011-04-29$5.87$5.8735,000
2011-04-28$5.86$5.8638,000
2011-04-27$5.96$5.9651,000
2011-04-26$5.86$5.86196,500
2011-04-25$5.41$5.41344,600
2011-04-21$5.24$5.24169,900
2011-04-20$5.51$5.51119,000
2011-04-19$5.84$5.8455,300
2011-04-18$6.01$6.0144,000
2011-04-15$6.17$6.1724,200
2011-04-14$6.20$6.2032,700
2011-04-13$6.15$6.1520,200
2011-04-12$6.18$6.1849,600
2011-04-11$6.18$6.1849,000
2011-04-08$6.16$6.16122,500
2011-04-07$6.10$6.1092,400
2011-04-06$6.33$6.3367,300
2011-04-05$6.69$6.6948,200
2011-04-04$6.77$6.7760,000
2011-04-01$6.60$6.6079,300
2011-03-31$6.82$6.8228,700
2011-03-30$6.86$6.8683,600
2011-03-29$6.90$6.90189,500
2011-03-28$6.40$6.4032,800
2011-03-25$6.50$6.5043,300
2011-03-24$6.60$6.6037,000
2011-03-23$6.51$6.5131,200
2011-03-22$6.64$6.6459,900
2011-03-21$6.74$6.74145,200
2011-03-18$6.34$6.3445,100
2011-03-17$6.27$6.2781,600
2011-03-16$6.20$6.2083,200
2011-03-15$6.08$6.08135,000
2011-03-14$6.17$6.1731,000
2011-03-11$6.36$6.3663,900
2011-03-10$6.34$6.34107,400
2011-03-09$6.75$6.75127,100
2011-03-08$7.03$7.0390,800
2011-03-07$7.08$7.08151,600
2011-03-04$7.34$7.34159,600
2011-03-03$7.39$7.39126,200
2011-03-02$7.49$7.49162,100
2011-03-01$7.68$7.6896,300
2011-02-28$7.84$7.8463,500
2011-02-25$8.09$8.0949,600
2011-02-24$7.84$7.84102,300
2011-02-23$8.17$8.17102,600
2011-02-22$8.52$8.52177,100
2011-02-18$8.52$8.5287,500
2011-02-17$8.46$8.4661,100
2011-02-16$8.46$8.46206,300
2011-02-15$8.55$8.55232,700
2011-02-14$8.09$8.0978,700
2011-02-11$8.17$8.17193,100
2011-02-10$8.25$8.25298,300
2011-02-09$8.96$8.96175,200
2011-02-08$9.26$9.26353,200
2011-02-07$9.14$9.141,272,300
2011-02-04$7.30$7.3097,400
2011-02-03$6.64$6.6444,100
2011-02-02$6.56$6.5675,700
2011-02-01$6.53$6.5384,300
2011-01-31$6.53$6.5383,800
2011-01-28$6.65$6.6569,000
2011-01-27$6.91$6.9140,100
2011-01-26$6.82$6.82116,600
2011-01-25$6.91$6.9176,500
2011-01-24$7.00$7.0096,400
2011-01-21$6.87$6.8783,800
2011-01-20$6.70$6.70119,500
2011-01-19$6.95$6.95129,200
2011-01-18$7.00$7.0084,300
2011-01-14$6.79$6.7947,100
2011-01-13$6.95$6.9565,200
2011-01-12$6.93$6.9387,700
2011-01-11$6.64$6.64138,200
2011-01-10$6.10$6.1061,800
2011-01-07$6.19$6.1983,200
2011-01-06$6.34$6.34178,600
2011-01-05$6.85$6.85218,300
2011-01-04$6.66$6.66263,500
2011-01-03$5.88$5.88116,500