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 — 2023

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2023-12-29$1.01$1.01227,800——
2023-12-28$0.97$0.9794,400——
2023-12-27$0.95$0.9559,300——
2023-12-26$0.93$0.93135,300——
2023-12-22$0.95$0.9578,100——
2023-12-21$0.96$0.9672,900——
2023-12-20$0.98$0.9889,500——
2023-12-19$0.93$0.9397,500——
2023-12-18$0.92$0.92151,500——
2023-12-15$0.95$0.9561,200——
2023-12-14$1.00$1.0043,800——
2023-12-13$0.96$0.9628,400——
2023-12-12$0.97$0.9731,900——
2023-12-11$0.97$0.9771,000——
2023-12-08$1.01$1.0142,100——
2023-12-07$1.01$1.0124,700——
2023-12-06$0.99$0.9932,500——
2023-12-05$0.99$0.9987,500——
2023-12-04$1.01$1.0140,600——
2023-12-01$1.02$1.0232,300——
2023-11-30$1.03$1.0325,600——
2023-11-29$1.05$1.0525,600——
2023-11-28$1.06$1.0615,800——
2023-11-27$1.05$1.0536,600——
2023-11-24$1.07$1.0710,900——
2023-11-22$1.04$1.0456,300——
2023-11-21$1.00$1.0019,100——
2023-11-20$1.02$1.0220,000——
2023-11-17$1.00$1.0026,700——
2023-11-16$1.01$1.0131,200——
2023-11-15$1.02$1.0290,100——
2023-11-14$1.00$1.00152,500——
2023-11-13$1.04$1.0439,900——
2023-11-10$1.05$1.0511,600——
2023-11-09$1.06$1.0610,300——
2023-11-08$1.05$1.058,800——
2023-11-07$1.05$1.0511,300——
2023-11-06$1.00$1.0033,900——
2023-11-03$1.04$1.0438,500——
2023-11-02$1.02$1.0219,000——
2023-11-01$1.01$1.0148,400——
2023-10-31$1.08$1.082,200——
2023-10-30$1.07$1.0719,800——
2023-10-27$1.08$1.085,900——
2023-10-26$1.07$1.078,600——
2023-10-25$1.12$1.125,800——
2023-10-24$1.01$1.0110,900——
2023-10-23$1.06$1.0619,000——
2023-10-20$1.09$1.0973,200——
2023-10-19$1.11$1.1112,500——
2023-10-18$1.15$1.1511,200——
2023-10-17$1.16$1.1665,600——
2023-10-16$1.16$1.1630,400——
2023-10-13$1.15$1.154,300——
2023-10-12$1.17$1.1730,200——
2023-10-11$1.22$1.2216,000——
2023-10-10$1.15$1.1536,200——
2023-10-09$1.15$1.1527,700——
2023-10-06$1.09$1.0937,300——
2023-10-05$1.06$1.0634,100——
2023-10-04$1.06$1.0615,100——
2023-10-03$1.06$1.0628,700——
2023-10-02$1.04$1.0423,600——
2023-09-29$1.08$1.0820,500——
2023-09-28$1.04$1.0411,200——
2023-09-27$1.03$1.0350,100——
2023-09-26$1.02$1.0295,200——
2023-09-25$1.16$1.1620,100——
2023-09-22$1.16$1.1619,400——
2023-09-21$1.19$1.1924,000——
2023-09-20$1.16$1.1661,600——
2023-09-19$1.27$1.2734,800——
2023-09-18$1.28$1.2822,100——
2023-09-15$1.30$1.3073,500——
2023-09-14$1.38$1.3822,000——
2023-09-13$1.41$1.4192,300——
2023-09-12$1.45$1.4515,000——
2023-09-11$1.43$1.4312,600——
2023-09-08$1.45$1.4542,400——
2023-09-07$1.47$1.4717,000——
2023-09-06$1.49$1.4910,900——
2023-09-05$1.48$1.481,800——
2023-09-01$1.50$1.5013,900——
2023-08-31$1.51$1.5144,100——
2023-08-30$1.53$1.5313,500——
2023-08-29$1.55$1.5521,400——
2023-08-28$1.53$1.53363,600——
2023-08-25$1.62$1.6216,100——
2023-08-24$1.59$1.594,700——
2023-08-23$1.59$1.594,900——
2023-08-22$1.57$1.578,900——
2023-08-21$1.60$1.6015,700——
2023-08-18$1.60$1.609,100——
2023-08-17$1.63$1.6312,900——
2023-08-16$1.58$1.5820,100——
2023-08-15$1.59$1.5920,300——
2023-08-14$1.62$1.6217,500——
2023-08-11$1.60$1.609,200——
2023-08-10$1.65$1.6524,200——
2023-08-09$1.62$1.6220,800——
2023-08-08$1.63$1.6326,700——
2023-08-07$1.67$1.6718,200——
2023-08-04$1.66$1.66112,100——
2023-08-03$1.60$1.6025,600——
2023-08-02$1.67$1.6717,500——
2023-08-01$1.69$1.6919,700——
2023-07-31$1.68$1.6836,600——
2023-07-28$1.67$1.6710,900——
2023-07-27$1.61$1.6118,500——
2023-07-26$1.57$1.5748,800——
2023-07-25$1.61$1.618,700——
2023-07-24$1.62$1.6210,800——
2023-07-21$1.65$1.6511,500——
2023-07-20$1.65$1.6540,400——
2023-07-19$1.68$1.6821,100——
2023-07-18$1.67$1.6714,800——
2023-07-17$1.63$1.6344,700——
2023-07-14$1.70$1.7012,900——
2023-07-13$1.70$1.7014,200——
2023-07-12$1.63$1.639,900——
2023-07-11$1.62$1.6227,400——
2023-07-10$1.60$1.609,200——
2023-07-07$1.61$1.6124,600——
2023-07-06$1.59$1.592,000——
2023-07-05$1.62$1.625,000——
2023-07-03$1.64$1.641,000——
2023-06-30$1.60$1.6014,500——
2023-06-29$1.64$1.6415,500——
2023-06-28$1.60$1.6029,300——
2023-06-27$1.61$1.6127,200——
2023-06-26$1.60$1.6017,100——
2023-06-23$1.65$1.6542,100——
2023-06-22$1.60$1.6073,000——
2023-06-21$1.44$1.44200,500——
2023-06-20$1.47$1.47249,800——
2023-06-16$1.45$1.45181,200——
2023-06-15$1.53$1.53201,500——
2023-06-14$1.61$1.61120,600——
2023-06-13$1.72$1.7224,600——
2023-06-12$1.74$1.7416,100——
2023-06-09$1.74$1.7421,900——
2023-06-08$1.71$1.7125,200——
2023-06-07$1.76$1.7622,200——
2023-06-06$1.69$1.6941,600——
2023-06-05$1.70$1.7047,200——
2023-06-02$1.71$1.717,800——
2023-06-01$1.75$1.7513,000——
2023-05-31$1.74$1.7445,600——
2023-05-30$1.71$1.7125,700——
2023-05-26$1.72$1.7233,600——
2023-05-25$1.58$1.5838,500——
2023-05-24$1.63$1.634,400——
2023-05-23$1.59$1.5917,600——
2023-05-22$1.59$1.5924,100——
2023-05-19$1.52$1.528,400——
2023-05-18$1.56$1.5629,300——
2023-05-17$1.59$1.595,900——
2023-05-16$1.51$1.5127,000——
2023-05-15$1.54$1.5421,300——
2023-05-12$1.55$1.554,500——
2023-05-11$1.54$1.5416,200——
2023-05-10$1.57$1.5714,000——
2023-05-09$1.55$1.554,800——
2023-05-08$1.47$1.4753,700——
2023-05-05$1.59$1.5947,300——
2023-05-04$1.42$1.4268,500——
2023-05-03$1.59$1.5920,800——
2023-05-02$1.59$1.5916,300——
2023-05-01$1.59$1.5948,800——
2023-04-28$1.60$1.6028,200——
2023-04-27$1.62$1.6217,200——
2023-04-26$1.59$1.592,400——
2023-04-25$1.59$1.5931,100——
2023-04-24$1.61$1.618,400——
2023-04-21$1.65$1.653,600——
2023-04-20$1.62$1.6215,200——
2023-04-19$1.64$1.645,500——
2023-04-18$1.59$1.5970,900——
2023-04-17$1.58$1.589,000——
2023-04-14$1.57$1.5739,400——
2023-04-13$1.67$1.673,300——
2023-04-12$1.68$1.6824,300——
2023-04-11$1.66$1.6644,200——
2023-04-10$1.68$1.684,100——
2023-04-06$1.67$1.6718,100——
2023-04-05$1.71$1.7127,500——
2023-04-04$1.73$1.7335,700——
2023-04-03$1.71$1.7137,500——
2023-03-31$1.71$1.7112,800——
2023-03-30$1.71$1.7134,300——
2023-03-29$1.72$1.7218,500——
2023-03-28$1.76$1.7634,600——
2023-03-27$1.74$1.7412,800——
2023-03-24$1.77$1.7723,000——
2023-03-23$1.79$1.793,200——
2023-03-22$1.81$1.8113,700——
2023-03-21$1.78$1.7819,900——
2023-03-20$1.80$1.8019,700——
2023-03-17$1.90$1.9043,600——
2023-03-16$1.86$1.866,400——
2023-03-15$1.82$1.8226,900——
2023-03-14$1.86$1.8639,200——
2023-03-13$1.90$1.9090,000——
2023-03-10$1.79$1.7912,600——
2023-03-09$1.75$1.7511,800——
2023-03-08$1.80$1.8016,200——
2023-03-07$1.82$1.8246,400——
2023-03-06$1.89$1.899,300——
2023-03-03$1.90$1.909,300——
2023-03-02$1.89$1.8922,800——
2023-03-01$1.87$1.8719,600——
2023-02-28$1.88$1.8812,700——
2023-02-27$1.88$1.8813,500——
2023-02-24$1.92$1.9213,000——
2023-02-23$1.93$1.9323,200——
2023-02-22$1.95$1.954,000——
2023-02-21$1.95$1.954,600——
2023-02-17$1.99$1.999,400——
2023-02-16$1.92$1.9252,200——
2023-02-15$2.02$2.024,100——
2023-02-14$1.99$1.9921,700——
2023-02-13$1.92$1.928,500——
2023-02-10$1.95$1.9517,300——
2023-02-09$1.98$1.9837,300——
2023-02-08$2.04$2.043,800——
2023-02-07$2.05$2.058,000——
2023-02-06$2.07$2.074,700——
2023-02-03$2.11$2.1114,700——
2023-02-02$2.10$2.1017,300——
2023-02-01$2.05$2.0511,400——
2023-01-31$2.12$2.1219,900——
2023-01-30$2.02$2.0217,900——
2023-01-27$2.05$2.0513,400——
2023-01-26$2.09$2.098,000——
2023-01-25$2.04$2.0480,300——
2023-01-24$2.13$2.1314,000——
2023-01-23$2.11$2.1122,600——
2023-01-20$2.11$2.113,100——
2023-01-19$2.15$2.1519,000——
2023-01-18$2.18$2.182,600——
2023-01-17$2.24$2.2431,400——
2023-01-13$2.15$2.1516,100——
2023-01-12$2.20$2.2010,300——
2023-01-11$2.21$2.2126,100——
2023-01-10$2.25$2.2525,000——
2023-01-09$2.22$2.2215,500——
2023-01-06$2.28$2.2816,900——
2023-01-05$2.23$2.2313,400——
2023-01-04$2.29$2.2930,100——
2023-01-03$2.06$2.0627,300——