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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$1.72$1.72144,400——
2021-12-30$1.74$1.7495,400——
2021-12-29$1.68$1.68129,700——
2021-12-28$1.70$1.7047,600——
2021-12-27$1.72$1.7271,800——
2021-12-23$1.75$1.7572,700——
2021-12-22$1.73$1.73135,400——
2021-12-21$1.74$1.74158,700——
2021-12-20$1.74$1.74372,500——
2021-12-17$1.86$1.8635,200——
2021-12-16$1.86$1.8645,500——
2021-12-15$1.85$1.8597,600——
2021-12-14$1.87$1.8743,100——
2021-12-13$1.87$1.8759,800——
2021-12-10$1.92$1.9297,000——
2021-12-09$1.90$1.9099,900——
2021-12-08$1.90$1.90147,800——
2021-12-07$1.90$1.90106,100——
2021-12-06$1.95$1.9570,700——
2021-12-03$2.06$2.0687,100——
2021-12-02$2.00$2.0066,600——
2021-12-01$1.90$1.9080,800——
2021-11-30$2.01$2.01131,500——
2021-11-29$2.07$2.0714,200——
2021-11-26$2.12$2.1217,000——
2021-11-24$2.13$2.1336,900——
2021-11-23$2.05$2.05122,400——
2021-11-22$2.05$2.0594,100——
2021-11-19$2.13$2.13227,900——
2021-11-18$2.28$2.2858,200——
2021-11-17$2.39$2.39125,800——
2021-11-16$2.33$2.3346,000——
2021-11-15$2.36$2.3647,200——
2021-11-12$2.38$2.3830,800——
2021-11-11$2.35$2.3514,100——
2021-11-10$2.29$2.2927,400——
2021-11-09$2.32$2.3221,300——
2021-11-08$2.35$2.3552,900——
2021-11-05$2.47$2.47248,300——
2021-11-04$2.17$2.1777,300——
2021-11-03$2.23$2.2323,500——
2021-11-02$2.28$2.2899,200——
2021-11-01$2.22$2.2286,100——
2021-10-29$2.25$2.2553,800——
2021-10-28$2.39$2.3939,800——
2021-10-27$2.31$2.3112,800——
2021-10-26$2.29$2.2968,800——
2021-10-25$2.28$2.2844,800——
2021-10-22$2.25$2.2562,000——
2021-10-21$2.37$2.3721,900——
2021-10-20$2.41$2.4129,300——
2021-10-19$2.37$2.3722,400——
2021-10-18$2.34$2.3422,500——
2021-10-15$2.31$2.3179,000——
2021-10-14$2.39$2.3928,000——
2021-10-13$2.32$2.3288,000——
2021-10-12$2.36$2.36105,200——
2021-10-11$2.40$2.4012,100——
2021-10-08$2.41$2.4153,200——
2021-10-07$2.41$2.4147,100——
2021-10-06$2.40$2.4060,400——
2021-10-05$2.46$2.4639,800——
2021-10-04$2.44$2.4484,900——
2021-10-01$2.56$2.5695,900——
2021-09-30$2.56$2.56180,800——
2021-09-29$2.52$2.5242,800——
2021-09-28$2.57$2.5754,400——
2021-09-27$2.69$2.6947,000——
2021-09-24$2.71$2.71137,600——
2021-09-23$2.56$2.56108,800——
2021-09-22$2.47$2.4781,200——
2021-09-21$2.44$2.4462,000——
2021-09-20$2.42$2.4279,800——
2021-09-17$2.47$2.47209,600——
2021-09-16$2.47$2.4797,400——
2021-09-15$2.45$2.45262,900——
2021-09-14$2.30$2.30489,000——
2021-09-13$2.22$2.221,519,100——
2021-09-10$2.88$2.882,489,600——
2021-09-09$2.37$2.3773,400——
2021-09-08$2.39$2.3973,500——
2021-09-07$2.36$2.36127,800——
2021-09-03$2.25$2.2523,500——
2021-09-02$2.25$2.2527,100——
2021-09-01$2.27$2.2719,900——
2021-08-31$2.29$2.2971,400——
2021-08-30$2.24$2.2423,400——
2021-08-27$2.20$2.2038,600——
2021-08-26$2.15$2.1538,200——
2021-08-25$2.11$2.11167,300——
2021-08-24$2.17$2.1716,000——
2021-08-23$2.22$2.2256,100——
2021-08-20$2.09$2.0946,700——
2021-08-19$2.03$2.0363,500——
2021-08-18$2.07$2.0764,900——
2021-08-17$2.09$2.09171,500——
2021-08-16$2.25$2.25660,200——
2021-08-13$1.96$1.96755,100——
2021-08-12$2.31$2.31132,700——
2021-08-11$2.37$2.37217,400——
2021-08-10$2.24$2.2451,600——
2021-08-09$2.26$2.26657,300——
2021-08-06$2.44$2.44100,000——
2021-08-05$2.57$2.57113,400——
2021-08-04$2.38$2.3855,700——
2021-08-03$2.39$2.3943,500——
2021-08-02$2.46$2.46186,000——
2021-07-30$2.55$2.55336,400——
2021-07-29$2.28$2.28114,400——
2021-07-28$2.18$2.1830,400——
2021-07-27$2.19$2.1997,300——
2021-07-26$2.18$2.1824,100——
2021-07-23$2.22$2.2253,000——
2021-07-22$2.22$2.2235,300——
2021-07-21$2.17$2.1740,400——
2021-07-20$2.21$2.2194,500——
2021-07-19$2.11$2.1181,600——
2021-07-16$2.06$2.0676,400——
2021-07-15$2.15$2.15154,300——
2021-07-14$2.19$2.1996,200——
2021-07-13$2.31$2.31127,200——
2021-07-12$2.35$2.35271,400——
2021-07-09$2.25$2.25212,000——
2021-07-08$2.18$2.1865,800——
2021-07-07$2.19$2.1996,200——
2021-07-06$2.32$2.32102,500——
2021-07-02$2.29$2.2987,800——
2021-07-01$2.34$2.3483,200——
2021-06-30$2.37$2.37130,900——
2021-06-29$2.34$2.3469,400——
2021-06-28$2.45$2.4592,500——
2021-06-25$2.38$2.383,132,800——
2021-06-24$2.39$2.39289,600——
2021-06-23$2.44$2.44499,300——
2021-06-22$2.10$2.10159,500——
2021-06-21$2.05$2.05149,800——
2021-06-18$2.08$2.08218,900——
2021-06-17$2.12$2.12183,600——
2021-06-16$2.18$2.18154,100——
2021-06-15$2.22$2.22113,100——
2021-06-14$2.32$2.32101,800——
2021-06-11$2.44$2.4499,900——
2021-06-10$2.41$2.4172,200——
2021-06-09$2.48$2.4862,400——
2021-06-08$2.48$2.4864,000——
2021-06-07$2.45$2.45121,900——
2021-06-04$2.55$2.55152,000——
2021-06-03$2.51$2.51109,100——
2021-06-02$2.40$2.4080,300——
2021-06-01$2.41$2.4169,000——
2021-05-28$2.38$2.3891,300——
2021-05-27$2.46$2.46157,100——
2021-05-26$2.33$2.3384,300——
2021-05-25$2.20$2.2075,700——
2021-05-24$2.31$2.31108,700——
2021-05-21$2.42$2.42284,600——
2021-05-20$2.13$2.13314,500——
2021-05-19$2.26$2.26187,700——
2021-05-18$2.27$2.27283,400——
2021-05-17$2.33$2.33240,900——
2021-05-14$2.43$2.43131,400——
2021-05-13$2.41$2.41192,400——
2021-05-12$2.47$2.4794,900——
2021-05-11$2.79$2.79387,600——
2021-05-10$2.69$2.69233,000——
2021-05-07$2.52$2.52198,800——
2021-05-06$2.43$2.43195,100——
2021-05-05$2.48$2.48194,500——
2021-05-04$2.61$2.61150,600——
2021-05-03$2.58$2.5898,800——
2021-04-30$2.56$2.56152,800——
2021-04-29$2.63$2.6371,300——
2021-04-28$2.73$2.73231,400——
2021-04-27$2.85$2.85210,400——
2021-04-26$2.82$2.82157,700——
2021-04-23$2.70$2.70100,100——
2021-04-22$2.58$2.58115,100——
2021-04-21$2.60$2.60131,800——
2021-04-20$2.47$2.47131,500——
2021-04-19$2.51$2.51198,900——
2021-04-16$2.67$2.67189,800——
2021-04-15$2.52$2.52247,700——
2021-04-14$2.57$2.57125,700——
2021-04-13$2.67$2.6781,000——
2021-04-12$2.63$2.63235,600——
2021-04-09$2.76$2.7677,400——
2021-04-08$2.80$2.80101,500——
2021-04-07$2.88$2.88104,500——
2021-04-06$3.03$3.03123,700——
2021-04-05$2.84$2.84215,200——
2021-04-01$3.03$3.0373,300——
2021-03-31$2.84$2.84245,100——
2021-03-30$2.71$2.71115,700——
2021-03-29$2.87$2.8764,700——
2021-03-26$2.99$2.9977,900——
2021-03-25$3.04$3.04127,400——
2021-03-24$2.91$2.91205,500——
2021-03-23$3.07$3.07114,000——
2021-03-22$3.28$3.28180,700——
2021-03-19$3.20$3.20225,100——
2021-03-18$3.19$3.1967,100——
2021-03-17$3.22$3.22134,700——
2021-03-16$3.22$3.22147,700——
2021-03-15$3.43$3.43180,100——
2021-03-12$3.58$3.58227,800——
2021-03-11$3.90$3.90181,300——
2021-03-10$3.75$3.75139,200——
2021-03-09$3.77$3.77228,900——
2021-03-08$3.53$3.53119,800——
2021-03-05$3.64$3.64191,000——
2021-03-04$3.68$3.68433,300——
2021-03-03$3.70$3.70249,100——
2021-03-02$3.89$3.89239,800——
2021-03-01$4.03$4.03252,900——
2021-02-26$4.03$4.03213,900——
2021-02-25$4.07$4.07204,000——
2021-02-24$4.62$4.62103,000——
2021-02-23$4.62$4.62277,500——
2021-02-22$4.87$4.87236,400——
2021-02-19$5.03$5.03344,000——
2021-02-18$5.37$5.37671,300——
2021-02-17$5.17$5.17344,400——
2021-02-16$4.80$4.80158,600——
2021-02-12$4.76$4.76135,400——
2021-02-11$4.55$4.55196,600——
2021-02-10$4.57$4.57276,300——
2021-02-09$4.98$4.98295,600——
2021-02-08$5.00$5.00546,200——
2021-02-05$5.27$5.27951,200——
2021-02-04$4.77$4.77415,800——
2021-02-03$4.00$4.00258,900——
2021-02-02$3.98$3.98231,900——
2021-02-01$4.14$4.14188,000——
2021-01-29$4.06$4.06360,900——
2021-01-28$3.89$3.89553,100——
2021-01-27$4.29$4.29522,600——
2021-01-26$4.81$4.81506,600——
2021-01-25$4.86$4.86889,300——
2021-01-22$4.19$4.19352,400——
2021-01-21$4.46$4.46505,100——
2021-01-20$4.25$4.25385,900——
2021-01-19$3.80$3.80313,100——
2021-01-15$3.94$3.94360,300——
2021-01-14$3.95$3.95793,500——
2021-01-13$3.95$3.952,963,900——
2021-01-12$3.11$3.11171,500——
2021-01-11$2.94$2.94164,300——
2021-01-08$2.92$2.92155,500——
2021-01-07$2.85$2.8599,600——
2021-01-06$2.85$2.85121,800——
2021-01-05$2.83$2.8384,100——
2021-01-04$2.67$2.67138,900——