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 — 1993

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1993-12-31$9.70$9.7021,500
1993-12-30$9.90$9.9039,875
1993-12-29$9.80$9.8052,125
1993-12-28$10.10$10.1020,250
1993-12-27$10.30$10.3031,500
1993-12-23$10.40$10.4034,250
1993-12-22$10.40$10.4078,625
1993-12-21$9.80$9.8064,375
1993-12-20$10.20$10.20161,000
1993-12-17$10.00$10.0084,250
1993-12-16$9.50$9.5034,125
1993-12-15$9.00$9.0049,375
1993-12-14$9.20$9.2045,500
1993-12-13$9.30$9.3043,250
1993-12-10$9.00$9.0036,000
1993-12-09$8.70$8.7049,625
1993-12-08$8.60$8.6067,375
1993-12-07$9.10$9.1072,625
1993-12-06$9.00$9.00146,625
1993-12-03$8.40$8.4035,375
1993-12-02$8.30$8.3057,000
1993-12-01$8.30$8.3069,750
1993-11-30$8.10$8.1037,750
1993-11-29$8.20$8.20112,000
1993-11-26$8.20$8.2052,125
1993-11-24$8.00$8.0059,250
1993-11-23$7.80$7.80180,625
1993-11-22$7.50$7.50121,375
1993-11-19$7.20$7.2045,625
1993-11-18$7.10$7.1016,750
1993-11-17$7.20$7.208,500
1993-11-16$7.30$7.3037,000
1993-11-15$7.00$7.006,875
1993-11-12$7.30$7.3026,750
1993-11-11$7.40$7.405,500
1993-11-10$7.30$7.3063,625
1993-11-09$7.30$7.3023,375
1993-11-08$7.30$7.3019,625
1993-11-05$7.30$7.3072,125
1993-11-04$7.20$7.2015,500
1993-11-03$7.00$7.0024,000
1993-11-02$7.40$7.4044,750
1993-11-01$7.70$7.7052,375
1993-10-29$7.60$7.6079,125
1993-10-28$7.00$7.0048,125
1993-10-27$6.70$6.7082,875
1993-10-26$6.80$6.8078,500
1993-10-25$7.30$7.30113,500
1993-10-22$7.50$7.50157,375
1993-10-21$7.70$7.7074,500
1993-10-20$8.10$8.109,625
1993-10-19$8.30$8.302,500
1993-10-18$8.30$8.3010,250
1993-10-15$8.20$8.2047,000
1993-10-14$8.00$8.0037,375
1993-10-13$8.30$8.3017,375
1993-10-12$8.30$8.3010,000
1993-10-11$8.40$8.4027,625
1993-10-08$8.40$8.4031,000
1993-10-07$8.40$8.4035,625
1993-10-06$8.40$8.408,875
1993-10-05$8.40$8.4046,625
1993-10-04$8.30$8.3041,000
1993-10-01$8.40$8.4029,500
1993-09-30$8.70$8.7023,250
1993-09-29$8.60$8.609,625
1993-09-28$8.60$8.6037,875
1993-09-27$9.00$9.0013,375
1993-09-24$9.00$9.0030,250
1993-09-23$8.60$8.6016,500
1993-09-22$8.60$8.6052,500
1993-09-21$8.80$8.8021,875
1993-09-20$8.50$8.5027,000
1993-09-17$8.60$8.6014,000
1993-09-16$8.20$8.2017,875
1993-09-15$8.10$8.1020,000
1993-09-14$8.60$8.607,875
1993-09-13$8.20$8.205,500
1993-09-10$8.20$8.2011,625
1993-09-09$8.20$8.2019,250
1993-09-08$8.60$8.6052,250
1993-09-07$8.90$8.9028,875
1993-09-03$9.20$9.2020,000
1993-09-02$9.60$9.6027,375
1993-09-01$9.50$9.5043,625
1993-08-31$9.60$9.6052,500
1993-08-30$9.00$9.0012,375
1993-08-27$9.00$9.0044,750
1993-08-26$8.70$8.7018,375
1993-08-25$8.80$8.8041,375
1993-08-24$8.20$8.2049,625
1993-08-23$8.20$8.2056,875
1993-08-20$8.60$8.6041,375
1993-08-19$8.40$8.4070,375
1993-08-18$9.00$9.0042,500
1993-08-17$9.60$9.6024,625
1993-08-16$9.40$9.4057,375
1993-08-13$9.80$9.8096,500
1993-08-12$8.80$8.8040,125
1993-08-11$8.70$8.70104,000
1993-08-10$9.00$9.00139,250
1993-08-09$8.60$8.6069,500
1993-08-06$7.60$7.6037,000
1993-08-05$7.40$7.4042,000
1993-08-04$7.40$7.407,125
1993-08-03$7.20$7.2014,000
1993-08-02$7.40$7.4016,875
1993-07-30$7.20$7.2032,875
1993-07-29$7.40$7.4078,750
1993-07-28$7.40$7.4034,875
1993-07-27$6.90$6.9023,375
1993-07-26$7.00$7.0014,625
1993-07-23$6.60$6.6037,500
1993-07-22$6.50$6.5018,125
1993-07-21$6.60$6.6019,625
1993-07-20$6.40$6.4030,500
1993-07-19$6.90$6.9014,125
1993-07-16$7.00$7.0032,250
1993-07-15$6.93$6.9315,750
1993-07-14$6.93$6.9313,125
1993-07-13$6.67$6.6716,688
1993-07-12$6.80$6.8012,188
1993-07-09$6.80$6.8011,813
1993-07-08$6.80$6.8037,125
1993-07-07$6.80$6.8036,563
1993-07-06$6.80$6.8033,000
1993-07-02$7.20$7.2015,375
1993-07-01$6.93$6.939,750
1993-06-30$7.20$7.2051,563
1993-06-29$7.27$7.2718,750
1993-06-28$7.47$7.4727,375
1993-06-25$7.20$7.2010,688
1993-06-24$7.33$7.339,000
1993-06-23$7.33$7.3315,188
1993-06-22$7.27$7.2734,875
1993-06-21$7.33$7.3312,750
1993-06-18$7.60$7.6035,625
1993-06-17$7.47$7.4725,500
1993-06-16$7.33$7.3315,750
1993-06-15$7.07$7.0728,313
1993-06-14$7.33$7.3375,563
1993-06-11$7.13$7.1353,250
1993-06-10$7.07$7.07108,188
1993-06-09$7.53$7.5385,500
1993-06-08$7.60$7.60154,125
1993-06-07$7.33$7.3377,438
1993-06-04$6.80$6.8025,313
1993-06-03$6.40$6.404,125
1993-06-02$6.67$6.672,813
1993-06-01$6.53$6.5335,438
1993-05-28$6.53$6.5369,000
1993-05-27$6.47$6.4752,125
1993-05-26$6.27$6.2755,688
1993-05-25$6.07$6.0738,438
1993-05-24$6.40$6.405,063
1993-05-21$6.27$6.2741,250
1993-05-20$6.40$6.4038,438
1993-05-19$6.00$6.007,875
1993-05-18$6.07$6.0760,000
1993-05-17$6.33$6.3313,688
1993-05-14$6.27$6.2712,000
1993-05-13$6.53$6.5349,688
1993-05-12$6.47$6.4726,625
1993-05-11$6.27$6.277,688
1993-05-10$6.27$6.2766,375
1993-05-07$6.53$6.539,938
1993-05-06$6.53$6.5327,375
1993-05-05$6.67$6.6712,938
1993-05-04$6.80$6.8019,875
1993-05-03$6.87$6.8737,875
1993-04-30$6.67$6.6714,813
1993-04-29$6.53$6.5330,375
1993-04-28$6.80$6.8072,375
1993-04-27$6.67$6.6713,875
1993-04-26$6.40$6.4028,688
1993-04-23$6.67$6.6719,125
1993-04-22$6.67$6.67108,000
1993-04-21$6.00$6.0026,438
1993-04-20$6.13$6.1325,500
1993-04-19$5.87$5.8783,250
1993-04-16$6.00$6.0085,688
1993-04-15$6.20$6.2066,750
1993-04-14$6.53$6.5340,875
1993-04-13$6.67$6.6756,063
1993-04-12$6.53$6.5312,188
1993-04-08$6.53$6.5317,625
1993-04-07$6.53$6.5336,563
1993-04-06$6.40$6.4080,250
1993-04-05$6.67$6.6795,813
1993-04-02$7.07$7.07278,063
1993-04-01$7.20$7.2081,563
1993-03-31$6.80$6.8099,000
1993-03-30$6.67$6.67116,250
1993-03-29$6.13$6.1380,438
1993-03-26$6.27$6.2775,750
1993-03-25$5.93$5.9331,688
1993-03-24$6.00$6.0023,063
1993-03-23$5.73$5.7375,000
1993-03-22$5.53$5.539,375
1993-03-19$5.53$5.5352,500
1993-03-18$5.60$5.6010,500
1993-03-17$5.47$5.4715,750
1993-03-16$5.33$5.3329,438
1993-03-15$5.33$5.338,063
1993-03-12$5.33$5.3333,188
1993-03-11$5.33$5.3317,813
1993-03-10$5.13$5.1344,813
1993-03-09$5.40$5.4036,938
1993-03-08$5.13$5.1361,500
1993-03-05$5.27$5.27136,125
1993-03-04$5.27$5.2728,313
1993-03-03$5.53$5.5328,875
1993-03-02$5.60$5.6063,750
1993-03-01$5.40$5.4054,375
1993-02-26$5.07$5.0742,750
1993-02-25$5.07$5.0732,250
1993-02-24$5.07$5.0736,938
1993-02-23$4.93$4.9333,000
1993-02-22$5.13$5.1366,375
1993-02-19$4.80$4.8055,500
1993-02-18$5.00$5.0066,000
1993-02-17$4.93$4.9375,750
1993-02-16$5.13$5.13187,313
1993-02-12$5.00$5.0030,938
1993-02-11$5.07$5.0717,438
1993-02-10$5.07$5.0735,250
1993-02-09$5.20$5.2043,313
1993-02-08$5.20$5.20126,000
1993-02-05$5.20$5.2072,750
1993-02-04$5.20$5.2079,125
1993-02-03$5.13$5.1380,250
1993-02-02$4.93$4.936,938
1993-02-01$5.00$5.0033,000
1993-01-29$5.00$5.0048,375
1993-01-28$4.67$4.6713,313
1993-01-27$4.53$4.5377,625
1993-01-26$4.93$4.9355,125
1993-01-25$4.73$4.7361,313
1993-01-22$4.60$4.6046,500
1993-01-21$4.67$4.6734,875
1993-01-20$4.60$4.6058,875
1993-01-19$4.33$4.3330,188
1993-01-18$4.40$4.4019,313
1993-01-15$4.33$4.335,813
1993-01-14$4.20$4.206,938
1993-01-13$4.27$4.2734,500
1993-01-12$4.13$4.1333,750
1993-01-11$4.27$4.273,938
1993-01-08$4.27$4.2751,000
1993-01-07$4.20$4.2054,375
1993-01-06$4.07$4.0716,313
1993-01-05$3.93$3.9318,750
1993-01-04$3.73$3.7314,625