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 — 2020

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2020-12-31$2.81$2.81201,700——
2020-12-30$2.82$2.82145,600——
2020-12-29$2.82$2.82312,600——
2020-12-28$2.76$2.76182,300——
2020-12-24$2.81$2.8169,000——
2020-12-23$2.83$2.83494,500——
2020-12-22$2.95$2.95234,500——
2020-12-21$2.70$2.70384,500——
2020-12-18$2.62$2.62360,700——
2020-12-17$2.66$2.66572,800——
2020-12-16$2.68$2.683,114,200——
2020-12-15$2.73$2.7353,100——
2020-12-14$2.71$2.71197,300——
2020-12-11$2.75$2.75348,200——
2020-12-10$2.72$2.72127,300——
2020-12-09$2.69$2.69247,600——
2020-12-08$2.78$2.78179,200——
2020-12-07$2.83$2.83352,600——
2020-12-04$3.03$3.03123,400——
2020-12-03$3.01$3.01117,200——
2020-12-02$3.04$3.04392,200——
2020-12-01$3.03$3.031,674,700——
2020-11-30$2.93$2.9370,100——
2020-11-27$2.81$2.8151,000——
2020-11-25$2.87$2.8792,900——
2020-11-24$3.00$3.00219,500——
2020-11-23$2.79$2.79102,300——
2020-11-20$2.77$2.7779,900——
2020-11-19$2.73$2.7390,200——
2020-11-18$2.71$2.71148,500——
2020-11-17$2.71$2.71187,100——
2020-11-16$2.98$2.9866,800——
2020-11-13$2.95$2.9574,400——
2020-11-12$2.97$2.9753,300——
2020-11-11$3.06$3.0663,600——
2020-11-10$3.05$3.05124,800——
2020-11-09$2.98$2.98284,700——
2020-11-06$2.86$2.8674,900——
2020-11-05$2.84$2.8487,100——
2020-11-04$2.83$2.8323,000——
2020-11-03$2.82$2.8290,900——
2020-11-02$2.72$2.7262,100——
2020-10-30$2.59$2.5947,900——
2020-10-29$2.73$2.7396,700——
2020-10-28$2.62$2.6296,100——
2020-10-27$2.79$2.7973,700——
2020-10-26$2.76$2.7680,000——
2020-10-23$2.96$2.9691,600——
2020-10-22$2.89$2.89109,300——
2020-10-21$2.89$2.8971,200——
2020-10-20$2.78$2.7857,200——
2020-10-19$2.84$2.8459,300——
2020-10-16$2.86$2.86135,300——
2020-10-15$2.98$2.98168,800——
2020-10-14$2.83$2.8384,700——
2020-10-13$2.80$2.8065,100——
2020-10-12$2.89$2.8999,700——
2020-10-09$2.90$2.90169,500——
2020-10-08$2.70$2.70115,700——
2020-10-07$2.72$2.7284,500——
2020-10-06$2.72$2.72115,600——
2020-10-05$2.68$2.6886,600——
2020-10-02$2.72$2.7298,200——
2020-10-01$2.78$2.7887,100——
2020-09-30$2.70$2.7077,900——
2020-09-29$2.81$2.81128,800——
2020-09-28$2.65$2.65145,700——
2020-09-25$2.48$2.48179,100——
2020-09-24$2.44$2.44190,600——
2020-09-23$2.38$2.3894,600——
2020-09-22$2.43$2.43149,700——
2020-09-21$2.41$2.41303,500——
2020-09-18$2.90$2.90368,800——
2020-09-17$2.69$2.69177,900——
2020-09-16$2.71$2.71668,400——
2020-09-15$2.47$2.47114,000——
2020-09-14$2.40$2.40135,900——
2020-09-11$2.53$2.53191,400——
2020-09-10$2.69$2.69591,900——
2020-09-09$2.42$2.42180,200——
2020-09-08$2.31$2.3197,600——
2020-09-04$2.34$2.34297,300——
2020-09-03$2.58$2.58380,800——
2020-09-02$2.53$2.53348,700——
2020-09-01$2.35$2.35161,100——
2020-08-31$2.32$2.32190,100——
2020-08-28$2.30$2.30157,000——
2020-08-27$2.27$2.27288,000——
2020-08-26$2.27$2.27108,600——
2020-08-25$2.25$2.25441,900——
2020-08-24$2.28$2.28358,300——
2020-08-21$2.14$2.14377,800——
2020-08-20$2.17$2.17145,300——
2020-08-19$2.24$2.24308,700——
2020-08-18$2.28$2.28285,300——
2020-08-17$2.34$2.34605,300——
2020-08-14$2.57$2.572,299,200——
2020-08-13$3.02$3.02111,700——
2020-08-12$2.92$2.92206,300——
2020-08-11$2.99$2.99219,200——
2020-08-10$3.19$3.19303,100——
2020-08-07$3.61$3.61243,400——
2020-08-06$4.08$4.08290,300——
2020-08-05$3.62$3.6298,500——
2020-08-04$3.40$3.40165,000——
2020-08-03$3.54$3.54135,300——
2020-07-31$3.38$3.38120,800——
2020-07-30$3.30$3.3066,500——
2020-07-29$3.35$3.3579,100——
2020-07-28$3.29$3.29220,400——
2020-07-27$3.45$3.45131,500——
2020-07-24$3.17$3.1777,300——
2020-07-23$3.21$3.2197,300——
2020-07-22$3.25$3.25121,200——
2020-07-21$3.33$3.33128,600——
2020-07-20$3.43$3.43225,800——
2020-07-17$3.31$3.31128,300——
2020-07-16$3.26$3.26127,000——
2020-07-15$3.46$3.46134,300——
2020-07-14$3.37$3.37161,800——
2020-07-13$3.43$3.43249,100——
2020-07-10$3.38$3.38210,100——
2020-07-09$3.21$3.21159,100——
2020-07-08$3.29$3.29256,300——
2020-07-07$3.39$3.39146,600——
2020-07-06$3.62$3.62265,600——
2020-07-02$3.86$3.86167,800——
2020-07-01$3.68$3.68284,100——
2020-06-30$4.06$4.06278,200——
2020-06-29$3.81$3.81661,500——
2020-06-26$4.05$4.053,616,500——
2020-06-25$5.01$5.01422,100——
2020-06-24$5.44$5.44352,000——
2020-06-23$5.12$5.12199,500——
2020-06-22$5.24$5.24147,800——
2020-06-19$5.13$5.13139,600——
2020-06-18$4.99$4.9995,800——
2020-06-17$5.05$5.05108,500——
2020-06-16$5.05$5.05134,900——
2020-06-15$4.85$4.85182,400——
2020-06-12$4.91$4.91124,700——
2020-06-11$4.43$4.43239,200——
2020-06-10$5.13$5.13219,100——
2020-06-09$5.04$5.04202,900——
2020-06-08$5.03$5.03171,700——
2020-06-05$5.12$5.12165,500——
2020-06-04$4.96$4.96190,300——
2020-06-03$4.81$4.81175,200——
2020-06-02$4.89$4.89216,700——
2020-06-01$4.86$4.86164,000——
2020-05-29$4.45$4.45238,400——
2020-05-28$4.86$4.86242,500——
2020-05-27$4.70$4.70144,100——
2020-05-26$4.50$4.50206,700——
2020-05-22$4.28$4.2892,700——
2020-05-21$4.21$4.21109,000——
2020-05-20$4.20$4.20142,000——
2020-05-19$4.14$4.14143,200——
2020-05-18$3.82$3.82362,500——
2020-05-15$4.13$4.13287,900——
2020-05-14$3.95$3.95243,100——
2020-05-13$3.81$3.81207,400——
2020-05-12$3.84$3.84135,700——
2020-05-11$3.81$3.81357,000——
2020-05-08$3.61$3.61289,500——
2020-05-07$3.27$3.27499,400——
2020-05-06$2.67$2.6733,900——
2020-05-05$2.72$2.7270,000——
2020-05-04$2.64$2.6460,000——
2020-05-01$2.82$2.8281,400——
2020-04-30$3.01$3.0149,000——
2020-04-29$2.89$2.8990,300——
2020-04-28$3.00$3.0071,200——
2020-04-27$3.00$3.00128,600——
2020-04-24$2.82$2.8281,100——
2020-04-23$2.66$2.66172,700——
2020-04-22$2.48$2.4837,500——
2020-04-21$2.43$2.4369,800——
2020-04-20$2.46$2.46100,600——
2020-04-17$2.39$2.3942,500——
2020-04-16$2.26$2.2671,300——
2020-04-15$2.16$2.16124,500——
2020-04-14$2.40$2.40109,600——
2020-04-13$2.35$2.35109,300——
2020-04-09$2.05$2.05218,300——
2020-04-08$2.08$2.08136,800——
2020-04-07$1.95$1.95152,600——
2020-04-06$1.91$1.9184,900——
2020-04-03$1.79$1.79286,400——
2020-04-02$1.99$1.99237,700——
2020-04-01$2.18$2.18101,900——
2020-03-31$2.34$2.34231,400——
2020-03-30$2.47$2.47173,200——
2020-03-27$2.64$2.64107,600——
2020-03-26$2.70$2.70158,500——
2020-03-25$2.93$2.93250,800——
2020-03-24$2.94$2.94275,600——
2020-03-23$2.70$2.70240,400——
2020-03-20$2.51$2.51177,500——
2020-03-19$2.75$2.7597,500——
2020-03-18$2.78$2.78202,400——
2020-03-17$3.03$3.03184,400——
2020-03-16$2.78$2.78188,200——
2020-03-13$2.81$2.81422,600——
2020-03-12$2.62$2.62164,200——
2020-03-11$2.74$2.74157,300——
2020-03-10$2.94$2.94130,200——
2020-03-09$3.04$3.04173,900——
2020-03-06$3.22$3.2272,400——
2020-03-05$3.24$3.24108,700——
2020-03-04$3.34$3.3449,000——
2020-03-03$3.23$3.2368,600——
2020-03-02$3.39$3.39187,300——
2020-02-28$3.10$3.10141,800——
2020-02-27$3.35$3.35374,500——
2020-02-26$3.51$3.51122,400——
2020-02-25$3.73$3.73126,000——
2020-02-24$3.78$3.7875,900——
2020-02-21$3.81$3.81180,600——
2020-02-20$4.15$4.15320,000——
2020-02-19$3.87$3.8791,800——
2020-02-18$3.73$3.73142,000——
2020-02-14$3.68$3.68228,400——
2020-02-13$3.42$3.4242,700——
2020-02-12$3.39$3.3968,700——
2020-02-11$3.33$3.3329,800——
2020-02-10$3.26$3.26104,300——
2020-02-07$3.33$3.3332,000——
2020-02-06$3.43$3.4342,600——
2020-02-05$3.38$3.3845,000——
2020-02-04$3.48$3.4845,100——
2020-02-03$3.49$3.4931,900——
2020-01-31$3.33$3.3369,500——
2020-01-30$3.42$3.4289,300——
2020-01-29$3.60$3.60137,600——
2020-01-28$3.48$3.4817,300——
2020-01-27$3.38$3.3863,400——
2020-01-24$3.51$3.5146,000——
2020-01-23$3.54$3.54112,000——
2020-01-22$3.42$3.42131,000——
2020-01-21$3.21$3.2142,300——
2020-01-17$3.18$3.1838,200——
2020-01-16$3.12$3.1242,800——
2020-01-15$3.03$3.03102,600——
2020-01-14$3.14$3.1432,800——
2020-01-13$3.10$3.10112,900——
2020-01-10$3.07$3.0725,400——
2020-01-09$3.06$3.0639,700——
2020-01-08$3.07$3.0756,600——
2020-01-07$3.03$3.0385,600——
2020-01-06$3.11$3.1180,300——
2020-01-03$3.08$3.0861,700——
2020-01-02$3.06$3.0671,500——