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 — 2005

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2005-12-30$5.17$5.17138,800
2005-12-29$5.00$5.0059,900
2005-12-28$4.92$4.92112,000
2005-12-27$4.79$4.7929,100
2005-12-23$4.83$4.8325,600
2005-12-22$4.82$4.8230,100
2005-12-21$5.00$5.0018,800
2005-12-20$4.74$4.7420,400
2005-12-19$4.68$4.6835,200
2005-12-16$4.74$4.74294,800
2005-12-15$4.91$4.9116,500
2005-12-14$4.99$4.9918,800
2005-12-13$4.91$4.9136,900
2005-12-12$4.87$4.8739,000
2005-12-09$5.25$5.2523,100
2005-12-08$5.27$5.2731,600
2005-12-07$5.23$5.2328,700
2005-12-06$5.31$5.3155,700
2005-12-05$5.56$5.5622,800
2005-12-02$5.31$5.3115,500
2005-12-01$5.30$5.3035,800
2005-11-30$5.66$5.6629,400
2005-11-29$5.42$5.4249,600
2005-11-28$4.99$4.9987,300
2005-11-25$5.52$5.5228,400
2005-11-23$5.85$5.8536,000
2005-11-22$6.00$6.0027,300
2005-11-21$5.95$5.9544,900
2005-11-18$5.95$5.95117,200
2005-11-17$6.10$6.10118,300
2005-11-16$5.23$5.2322,700
2005-11-15$5.16$5.1632,300
2005-11-14$5.00$5.0045,300
2005-11-11$4.86$4.8624,200
2005-11-10$4.86$4.8636,100
2005-11-09$4.58$4.5825,700
2005-11-08$4.59$4.5912,900
2005-11-07$4.65$4.6510,000
2005-11-04$4.60$4.6036,800
2005-11-03$4.60$4.6013,700
2005-11-02$4.60$4.6018,800
2005-11-01$4.71$4.7114,100
2005-10-31$4.72$4.7240,600
2005-10-28$4.82$4.8222,100
2005-10-27$4.90$4.9028,800
2005-10-26$4.83$4.8337,900
2005-10-25$5.01$5.0154,800
2005-10-24$4.98$4.98110,400
2005-10-21$4.50$4.5056,300
2005-10-20$4.22$4.2242,500
2005-10-19$3.98$3.9811,200
2005-10-18$3.99$3.9917,700
2005-10-17$4.09$4.0924,100
2005-10-14$4.04$4.0427,700
2005-10-13$4.03$4.0312,100
2005-10-12$4.03$4.0317,400
2005-10-11$4.00$4.0031,500
2005-10-10$4.32$4.3228,000
2005-10-07$4.13$4.1381,800
2005-10-06$4.55$4.5558,400
2005-10-05$4.71$4.7154,400
2005-10-04$4.76$4.76232,000
2005-10-03$4.65$4.65458,600
2005-09-30$3.10$3.1019,800
2005-09-29$3.06$3.0619,300
2005-09-28$3.00$3.0027,100
2005-09-27$3.00$3.0016,600
2005-09-26$2.81$2.8140,100
2005-09-23$2.94$2.9415,100
2005-09-22$2.86$2.869,000
2005-09-21$2.94$2.947,100
2005-09-20$2.97$2.977,900
2005-09-19$2.91$2.918,600
2005-09-16$3.00$3.0016,100
2005-09-15$2.97$2.9712,500
2005-09-14$2.92$2.926,800
2005-09-13$2.91$2.918,200
2005-09-12$2.89$2.8911,900
2005-09-09$2.89$2.8925,400
2005-09-08$2.93$2.9320,300
2005-09-07$2.92$2.927,400
2005-09-06$3.00$3.0020,800
2005-09-02$3.01$3.015,100
2005-09-01$2.86$2.8637,300
2005-08-31$2.87$2.8712,300
2005-08-30$2.99$2.999,400
2005-08-29$2.85$2.8522,000
2005-08-26$2.78$2.7829,600
2005-08-25$2.81$2.8116,700
2005-08-24$2.95$2.958,400
2005-08-23$2.98$2.989,600
2005-08-22$2.85$2.8534,700
2005-08-19$3.03$3.035,300
2005-08-18$3.03$3.0318,700
2005-08-17$3.06$3.065,800
2005-08-16$3.00$3.0028,000
2005-08-15$3.29$3.2935,300
2005-08-12$3.15$3.159,900
2005-08-11$3.00$3.004,500
2005-08-10$3.00$3.0015,400
2005-08-09$3.04$3.048,500
2005-08-08$2.92$2.926,400
2005-08-05$2.97$2.977,700
2005-08-04$2.90$2.9013,600
2005-08-03$2.91$2.919,100
2005-08-02$2.90$2.9021,400
2005-08-01$2.90$2.9034,500
2005-07-29$2.93$2.9325,400
2005-07-28$2.94$2.9431,700
2005-07-27$2.98$2.9820,200
2005-07-26$3.03$3.0330,300
2005-07-25$3.18$3.185,900
2005-07-22$3.12$3.1210,900
2005-07-21$3.15$3.1527,900
2005-07-20$3.13$3.1328,500
2005-07-19$3.06$3.0627,200
2005-07-18$3.07$3.0726,700
2005-07-15$3.27$3.277,500
2005-07-14$3.17$3.1713,100
2005-07-13$3.12$3.1218,000
2005-07-12$3.32$3.3224,100
2005-07-11$3.22$3.2220,800
2005-07-08$3.06$3.0615,700
2005-07-07$3.05$3.0520,000
2005-07-06$3.03$3.0346,800
2005-07-05$3.09$3.0913,400
2005-07-01$3.10$3.1029,300
2005-06-30$3.17$3.1720,600
2005-06-29$3.04$3.0410,600
2005-06-28$2.97$2.9763,400
2005-06-27$3.04$3.0415,300
2005-06-24$3.03$3.0376,300
2005-06-23$2.87$2.8767,200
2005-06-22$3.00$3.00131,800
2005-06-21$3.35$3.3552,900
2005-06-20$3.56$3.5623,000
2005-06-17$3.74$3.7453,500
2005-06-16$3.79$3.7920,900
2005-06-15$3.87$3.878,600
2005-06-14$3.88$3.8818,200
2005-06-13$3.72$3.7224,000
2005-06-10$3.80$3.8047,500
2005-06-09$3.98$3.9826,700
2005-06-08$4.17$4.1724,200
2005-06-07$4.36$4.3622,100
2005-06-06$4.39$4.399,000
2005-06-03$4.37$4.377,500
2005-06-02$4.32$4.329,200
2005-06-01$4.32$4.3211,500
2005-05-31$4.36$4.366,000
2005-05-27$4.35$4.3511,400
2005-05-26$4.39$4.399,600
2005-05-25$4.39$4.399,100
2005-05-24$4.45$4.459,000
2005-05-23$4.34$4.347,400
2005-05-20$4.29$4.2910,700
2005-05-19$4.37$4.3710,500
2005-05-18$4.49$4.495,300
2005-05-17$4.48$4.4814,000
2005-05-16$4.29$4.297,000
2005-05-13$4.49$4.4935,600
2005-05-12$4.80$4.806,800
2005-05-11$4.77$4.7715,200
2005-05-10$4.76$4.7653,700
2005-05-09$4.45$4.4521,800
2005-05-06$4.38$4.3840,200
2005-05-05$4.00$4.0029,600
2005-05-04$4.18$4.18155,900
2005-05-03$4.02$4.0289,000
2005-05-02$4.42$4.4253,600
2005-04-29$4.55$4.5512,500
2005-04-28$4.51$4.5121,900
2005-04-27$4.67$4.6737,600
2005-04-26$4.76$4.7629,200
2005-04-25$4.82$4.8220,400
2005-04-22$4.84$4.8410,800
2005-04-21$5.07$5.0734,100
2005-04-20$5.10$5.1024,000
2005-04-19$5.15$5.157,800
2005-04-18$5.16$5.163,400
2005-04-15$5.18$5.1822,200
2005-04-14$5.22$5.2212,900
2005-04-13$5.25$5.2511,900
2005-04-12$5.32$5.328,400
2005-04-11$5.15$5.158,800
2005-04-08$5.23$5.2317,200
2005-04-07$5.20$5.2014,200
2005-04-06$5.56$5.566,900
2005-04-05$5.59$5.5912,000
2005-04-04$5.70$5.706,700
2005-04-01$5.60$5.6025,700
2005-03-31$5.20$5.206,000
2005-03-30$5.21$5.2110,800
2005-03-29$5.27$5.2725,900
2005-03-28$5.36$5.367,200
2005-03-24$5.32$5.3216,700
2005-03-23$5.36$5.366,300
2005-03-22$5.35$5.3543,600
2005-03-21$5.88$5.889,100
2005-03-18$6.00$6.0015,800
2005-03-17$6.00$6.0024,000
2005-03-16$6.19$6.1952,800
2005-03-15$6.46$6.4634,700
2005-03-14$6.20$6.2041,600
2005-03-11$6.04$6.0453,900
2005-03-10$5.79$5.7928,100
2005-03-09$5.87$5.8760,200
2005-03-08$5.75$5.7555,900
2005-03-07$5.50$5.5027,400
2005-03-04$5.28$5.2817,900
2005-03-03$5.16$5.1615,800
2005-03-02$5.05$5.0539,700
2005-03-01$5.05$5.0527,300
2005-02-28$5.14$5.1495,500
2005-02-25$5.54$5.5466,500
2005-02-24$5.85$5.8541,800
2005-02-23$5.86$5.8613,200
2005-02-22$5.85$5.8517,600
2005-02-18$5.87$5.8715,900
2005-02-17$5.96$5.9626,600
2005-02-16$6.00$6.0030,300
2005-02-15$5.97$5.9725,200
2005-02-14$6.00$6.0057,300
2005-02-11$5.95$5.9517,600
2005-02-10$5.93$5.934,200
2005-02-09$5.74$5.7416,400
2005-02-08$6.00$6.0021,900
2005-02-07$6.00$6.0037,500
2005-02-04$5.98$5.9844,800
2005-02-03$6.00$6.009,800
2005-02-02$6.02$6.0219,900
2005-02-01$6.00$6.0027,100
2005-01-31$6.00$6.0030,400
2005-01-28$6.08$6.0814,800
2005-01-27$6.08$6.0814,200
2005-01-26$6.03$6.039,000
2005-01-25$6.00$6.009,600
2005-01-24$6.00$6.0024,600
2005-01-21$6.00$6.0023,200
2005-01-20$6.05$6.0510,100
2005-01-19$6.02$6.0218,300
2005-01-18$6.00$6.0012,300
2005-01-14$6.01$6.0118,900
2005-01-13$6.00$6.0022,300
2005-01-12$5.99$5.9926,000
2005-01-11$6.07$6.0715,300
2005-01-10$6.32$6.3223,300
2005-01-07$6.11$6.1112,400
2005-01-06$6.10$6.1014,200
2005-01-05$6.03$6.0317,800
2005-01-04$6.21$6.2125,600
2005-01-03$6.01$6.0132,800