NASDAQ:KOSS | Historical Stock Price | KOSS CORP

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
1980-03-17 to 2026-09-03
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.15$0.47$1.47$4.62$14.51$45.631980-03-172026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

View year

Historical Stock Price — 2019

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2019-12-31$1.54$2.6210,300
2019-12-30$1.49$2.5428,300
2019-12-27$1.54$2.6214,900
2019-12-26$1.54$2.6227,100
2019-12-24$1.58$2.6927,900
2019-12-23$1.63$2.7819,300
2019-12-20$1.48$2.524,600
2019-12-19$1.51$2.5710,000
2019-12-18$1.50$2.5614,500
2019-12-17$1.53$2.616,300
2019-12-16$1.60$2.738,600
2019-12-13$1.62$2.768,500
2019-12-12$1.62$2.7615,400
2019-12-11$1.46$2.4915,500
2019-12-10$1.41$2.40157,900
2019-12-09$1.44$2.454,000
2019-12-06$1.42$2.4217,600
2019-12-05$1.43$2.445,100
2019-12-04$1.43$2.445,200
2019-12-03$1.45$2.472,300
2019-12-02$1.45$2.4710,400
2019-11-29$1.45$2.472,400
2019-11-27$1.47$2.515,600
2019-11-26$1.48$2.5211,300
2019-11-25$1.46$2.4961,500
2019-11-22$1.63$2.787,600
2019-11-21$1.65$2.81500
2019-11-20$1.62$2.765,200
2019-11-19$1.70$2.902,100
2019-11-18$1.70$2.901,100
2019-11-15$1.79$3.05400
2019-11-14$1.71$2.912,800
2019-11-13$1.70$2.909,500
2019-11-12$1.77$3.021,100
2019-11-11$1.67$2.857,300
2019-11-08$1.72$2.9331,100
2019-11-07$1.76$3.008,800
2019-11-06$1.80$3.0712,400
2019-11-05$1.72$2.939,000
2019-11-04$1.77$3.029,800
2019-11-01$1.81$3.083,300
2019-10-31$1.82$3.1011,600
2019-10-30$1.82$3.106,400
2019-10-29$1.83$3.12700
2019-10-28$1.89$3.221,100
2019-10-25$1.93$3.296,300
2019-10-24$1.84$3.142,600
2019-10-23$1.87$3.19800
2019-10-22$1.87$3.191,900
2019-10-21$1.91$3.26200
2019-10-18$1.91$3.262,800
2019-10-17$1.85$3.1518,200
2019-10-16$1.94$3.317,300
2019-10-15$1.95$3.32800
2019-10-14$1.95$3.321,200
2019-10-11$1.95$3.323,000
2019-10-10$1.96$3.345,700
2019-10-09$2.01$3.43300
2019-10-08$2.04$3.48900
2019-10-07$1.96$3.342,500
2019-10-04$2.01$3.432,700
2019-10-03$1.96$3.347,300
2019-10-02$1.96$3.3416,100
2019-10-01$2.06$3.512,900
2019-09-30$2.00$3.414,400
2019-09-27$2.05$3.493,100
2019-09-26$2.03$3.4618,300
2019-09-25$2.01$3.436,400
2019-09-24$2.03$3.468,800
2019-09-23$2.09$3.567,400
2019-09-20$2.04$3.482,900
2019-09-19$2.04$3.4812,700
2019-09-18$2.05$3.495,000
2019-09-17$2.03$3.463,100
2019-09-16$1.95$3.329,200
2019-09-13$1.97$3.364,000
2019-09-12$1.93$3.2929,600
2019-09-11$1.96$3.349,500
2019-09-10$1.93$3.2912,300
2019-09-09$1.97$3.3614,100
2019-09-06$1.95$3.3213,800
2019-09-05$1.92$3.2752,500
2019-09-04$1.91$3.2644,200
2019-09-03$1.85$3.1530,100
2019-08-30$1.76$3.0057,200
2019-08-29$1.85$3.15249,600
2019-08-28$2.22$3.78415,800
2019-08-27$2.65$4.52381,600
2019-08-26$2.05$3.49564,500
2019-08-23$1.85$3.1517,200
2019-08-22$1.97$3.362,800
2019-08-21$1.97$3.363,800
2019-08-20$1.94$3.31700
2019-08-19$1.94$3.31100
2019-08-16$1.85$3.155,600
2019-08-15$1.83$3.12400
2019-08-14$1.83$3.127,100
2019-08-13$1.94$3.311,700
2019-08-12$1.86$3.17400
2019-08-09$1.96$3.343,100
2019-08-08$1.89$3.221,600
2019-08-07$1.98$3.37200
2019-08-06$1.87$3.1920,700
2019-08-05$1.99$3.399,200
2019-08-02$1.97$3.36200
2019-08-01$1.93$3.295,500
2019-07-31$1.95$3.3211,700
2019-07-30$1.95$3.32100
2019-07-29$1.95$3.323,900
2019-07-26$1.99$3.393,100
2019-07-25$1.99$3.391,700
2019-07-24$1.97$3.362,300
2019-07-23$1.97$3.361,200
2019-07-22$1.99$3.39500
2019-07-19$1.98$3.373,900
2019-07-18$1.97$3.365,200
2019-07-17$1.97$3.361,200
2019-07-16$1.95$3.324,800
2019-07-15$1.99$3.39800
2019-07-12$1.98$3.371,200
2019-07-11$2.02$3.44600
2019-07-10$2.00$3.413,300
2019-07-09$2.03$3.46200
2019-07-08$2.00$3.41300
2019-07-05$2.00$3.411,700
2019-07-03$2.04$3.480
2019-07-02$2.04$3.481,100
2019-07-01$1.99$3.391,900
2019-06-28$2.00$3.414,700
2019-06-27$2.07$3.53100
2019-06-26$2.07$3.532,200
2019-06-25$2.05$3.493,800
2019-06-24$2.05$3.4912,300
2019-06-21$2.07$3.5313,000
2019-06-20$2.01$3.439,500
2019-06-19$2.02$3.443,900
2019-06-18$2.03$3.462,600
2019-06-17$2.10$3.58100
2019-06-14$2.10$3.581,200
2019-06-13$2.01$3.436,700
2019-06-12$2.03$3.464,300
2019-06-11$2.03$3.461,000
2019-06-10$2.06$3.5160,800
2019-06-07$2.09$3.56100
2019-06-06$2.09$3.5616,300
2019-06-05$2.10$3.5821,500
2019-06-04$2.05$3.492,300
2019-06-03$2.01$3.436,600
2019-05-31$2.10$3.58100
2019-05-30$2.10$3.5810,000
2019-05-29$2.10$3.5810,700
2019-05-28$2.13$3.63400
2019-05-24$2.10$3.580
2019-05-23$2.10$3.587,200
2019-05-22$2.13$3.63700
2019-05-21$2.00$3.412,500
2019-05-20$2.09$3.561,800
2019-05-17$2.12$3.619,600
2019-05-16$2.11$3.6010,100
2019-05-15$2.20$3.7513,400
2019-05-14$2.09$3.5637,500
2019-05-13$2.02$3.4431,100
2019-05-10$2.15$3.66372,100
2019-05-09$1.99$3.3912,400
2019-05-08$2.01$3.43200
2019-05-07$2.01$3.432,800
2019-05-06$2.01$3.435,100
2019-05-03$2.02$3.442,400
2019-05-02$2.06$3.511,600
2019-05-01$2.02$3.441,900
2019-04-30$2.02$3.443,100
2019-04-29$2.07$3.536,300
2019-04-26$2.09$3.564,100
2019-04-25$2.06$3.51100
2019-04-24$2.06$3.512,600
2019-04-23$2.07$3.531,400
2019-04-22$2.01$3.432,600
2019-04-18$2.05$3.495,600
2019-04-17$2.10$3.584,500
2019-04-16$2.13$3.632,500
2019-04-15$2.22$3.786,100
2019-04-12$2.15$3.662,300
2019-04-11$2.20$3.758,100
2019-04-10$2.07$3.532,400
2019-04-09$2.09$3.562,000
2019-04-08$2.01$3.433,800
2019-04-05$2.18$3.72900
2019-04-04$2.06$3.5114,300
2019-04-03$2.15$3.6620,200
2019-04-02$2.06$3.511,500
2019-04-01$2.07$3.539,200
2019-03-29$2.06$3.5115,500
2019-03-28$1.97$3.3617,100
2019-03-27$2.01$3.431,400
2019-03-26$2.02$3.4417,900
2019-03-25$2.05$3.492,100
2019-03-22$2.05$3.494,100
2019-03-21$2.00$3.41200
2019-03-20$2.00$3.41200
2019-03-19$1.96$3.341,500
2019-03-18$1.92$3.273,600
2019-03-15$1.98$3.379,500
2019-03-14$2.24$3.823,600
2019-03-13$2.09$3.565,100
2019-03-12$2.04$3.487,400
2019-03-11$2.07$3.5325,500
2019-03-08$1.98$3.377,800
2019-03-07$1.94$3.315,300
2019-03-06$2.00$3.41113,900
2019-03-05$1.87$3.191,000
2019-03-04$1.87$3.193,200
2019-03-01$1.86$3.178,600
2019-02-28$1.91$3.263,100
2019-02-27$1.92$3.271,300
2019-02-26$2.00$3.415,300
2019-02-25$1.95$3.326,100
2019-02-22$1.99$3.391,800
2019-02-21$1.94$3.311,700
2019-02-20$1.87$3.191,700
2019-02-19$1.86$3.173,800
2019-02-15$1.89$3.2213,700
2019-02-14$1.88$3.203,500
2019-02-13$1.89$3.2237,200
2019-02-12$1.92$3.2714,100
2019-02-11$1.87$3.191,500
2019-02-08$1.90$3.2412,500
2019-02-07$1.85$3.159,000
2019-02-06$1.87$3.1919,000
2019-02-05$1.91$3.269,100
2019-02-04$1.88$3.2023,000
2019-02-01$1.91$3.2610,000
2019-01-31$1.90$3.2424,000
2019-01-30$1.90$3.244,000
2019-01-29$1.90$3.24900
2019-01-28$1.90$3.2431,900
2019-01-25$2.01$3.431,300
2019-01-24$2.01$3.432,100
2019-01-23$2.12$3.61800
2019-01-22$2.12$3.614,600
2019-01-18$2.14$3.657,000
2019-01-17$2.26$3.852,400
2019-01-16$2.15$3.66700
2019-01-15$2.10$3.581,400
2019-01-14$2.04$3.48800
2019-01-11$1.98$3.373,000
2019-01-10$1.99$3.39700
2019-01-09$1.96$3.34100
2019-01-08$1.96$3.343,100
2019-01-07$2.04$3.48800
2019-01-04$2.19$3.73800
2019-01-03$1.97$3.362,000
2019-01-02$1.96$3.341,900