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.

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Historical Stock Price — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$1.91$3.269,100
2018-12-28$1.98$3.378,400
2018-12-27$1.98$3.372,400
2018-12-26$1.87$3.191,300
2018-12-24$1.85$3.155,300
2018-12-21$1.87$3.1919,500
2018-12-20$1.99$3.395,200
2018-12-19$1.89$3.2223,400
2018-12-18$1.86$3.173,200
2018-12-17$1.88$3.207,200
2018-12-14$2.13$3.632,900
2018-12-13$1.87$3.197,500
2018-12-12$1.93$3.2914,100
2018-12-11$1.92$3.2717,800
2018-12-10$1.94$3.3120,000
2018-12-07$1.99$3.3910,600
2018-12-06$1.94$3.319,800
2018-12-04$2.02$3.443,400
2018-12-03$2.11$3.602,500
2018-11-30$2.05$3.491,800
2018-11-29$2.16$3.681,100
2018-11-28$2.16$3.681,700
2018-11-27$2.02$3.444,600
2018-11-26$1.96$3.3410,800
2018-11-23$2.05$3.49600
2018-11-21$2.05$3.491,300
2018-11-20$2.10$3.5821,400
2018-11-19$2.20$3.7511,900
2018-11-16$2.11$3.6016,700
2018-11-15$1.98$3.371,700
2018-11-14$1.89$3.2220,300
2018-11-13$1.92$3.2711,700
2018-11-12$2.13$3.634,900
2018-11-09$2.26$3.85100
2018-11-08$2.26$3.855,200
2018-11-07$2.25$3.835,500
2018-11-06$2.42$4.122,300
2018-11-05$2.39$4.0716,300
2018-11-02$2.55$4.3519,200
2018-11-01$2.68$4.57100
2018-10-31$2.68$4.572,000
2018-10-30$2.68$4.577,100
2018-10-29$2.68$4.577,000
2018-10-26$2.65$4.524,200
2018-10-25$2.70$4.605,000
2018-10-24$2.74$4.673,800
2018-10-23$2.80$4.771,900
2018-10-22$2.75$4.694,300
2018-10-19$2.74$4.6725,600
2018-10-18$2.62$4.479,800
2018-10-17$2.69$4.587,500
2018-10-16$2.80$4.777,100
2018-10-15$2.85$4.8612,700
2018-10-12$2.74$4.6735,300
2018-10-11$2.75$4.6922,400
2018-10-10$2.63$4.488,900
2018-10-09$2.64$4.50900
2018-10-08$2.66$4.533,900
2018-10-05$2.83$4.822,400
2018-10-04$2.76$4.707,000
2018-10-03$2.87$4.8920,700
2018-10-02$2.74$4.6743,700
2018-10-01$2.99$5.1018,600
2018-09-28$2.82$4.8128,000
2018-09-27$2.67$4.5513,800
2018-09-26$2.70$4.608,700
2018-09-25$2.73$4.656,700
2018-09-24$2.71$4.6223,700
2018-09-21$2.62$4.4717,800
2018-09-20$2.77$4.721,900
2018-09-19$2.75$4.698,100
2018-09-18$2.76$4.7018,100
2018-09-17$2.88$4.9119,500
2018-09-14$2.75$4.6911,200
2018-09-13$2.92$4.9851,000
2018-09-12$2.98$5.08126,100
2018-09-11$2.81$4.794,000
2018-09-10$2.81$4.7940,500
2018-09-07$2.73$4.65111,600
2018-09-06$3.28$5.5935,500
2018-09-05$3.37$5.7450,400
2018-09-04$3.63$6.1919,500
2018-08-31$3.64$6.2057,800
2018-08-30$3.81$6.4939,200
2018-08-29$3.94$6.7160,600
2018-08-28$4.23$7.2138,700
2018-08-27$4.27$7.28162,000
2018-08-24$3.97$6.77124,300
2018-08-23$4.25$7.24546,400
2018-08-22$4.32$7.361,694,100
2018-08-21$4.08$6.95974,300
2018-08-20$3.05$5.2083,600
2018-08-17$2.81$4.7952,300
2018-08-16$2.63$4.484,000
2018-08-15$2.67$4.5512,900
2018-08-14$2.73$4.653,700
2018-08-13$2.65$4.528,900
2018-08-10$2.62$4.478,600
2018-08-09$2.69$4.5811,600
2018-08-08$2.60$4.434,900
2018-08-07$2.58$4.4026,400
2018-08-06$2.61$4.4516,700
2018-08-03$2.52$4.299,400
2018-08-02$2.59$4.41149,000
2018-08-01$2.48$4.237,600
2018-07-31$2.47$4.217,800
2018-07-30$2.52$4.295,500
2018-07-27$2.59$4.4133,300
2018-07-26$2.84$4.8411,800
2018-07-25$2.65$4.528,300
2018-07-24$2.60$4.4332,800
2018-07-23$2.80$4.7738,000
2018-07-20$2.71$4.6238,700
2018-07-19$2.66$4.5343,900
2018-07-18$2.54$4.3315,900
2018-07-17$2.47$4.218,400
2018-07-16$2.48$4.236,600
2018-07-13$2.63$4.485,700
2018-07-12$2.73$4.6529,100
2018-07-11$2.64$4.5037,400
2018-07-10$2.69$4.5879,000
2018-07-09$2.56$4.3665,400
2018-07-06$2.41$4.1121,000
2018-07-05$2.38$4.0611,700
2018-07-03$2.34$3.998,700
2018-07-02$2.44$4.165,900
2018-06-29$2.35$4.0018,600
2018-06-28$2.42$4.1217,000
2018-06-27$2.35$4.006,000
2018-06-26$2.34$3.9913,700
2018-06-25$2.35$4.003,300
2018-06-22$2.39$4.0719,700
2018-06-21$2.42$4.1238,500
2018-06-20$2.49$4.2496,600
2018-06-19$2.41$4.1116,100
2018-06-18$2.45$4.1839,100
2018-06-15$2.40$4.0931,000
2018-06-14$2.20$3.7525,700
2018-06-13$2.35$4.00136,900
2018-06-12$2.24$3.8217,900
2018-06-11$2.26$3.8518,600
2018-06-08$2.25$3.8327,500
2018-06-07$2.23$3.80154,500
2018-06-06$2.14$3.6531,100
2018-06-05$2.19$3.7337,600
2018-06-04$2.19$3.7312,500
2018-06-01$2.22$3.7824,300
2018-05-31$2.12$3.6136,600
2018-05-30$2.23$3.80175,200
2018-05-29$1.98$3.37608,600
2018-05-25$2.15$3.6625,400
2018-05-24$2.34$3.9912,400
2018-05-23$2.30$3.9211,800
2018-05-22$2.36$4.0222,900
2018-05-21$2.29$3.9011,900
2018-05-18$2.22$3.7821,100
2018-05-17$2.36$4.0253,100
2018-05-16$2.60$4.4338,300
2018-05-15$2.31$3.9452,100
2018-05-14$2.52$4.2934,800
2018-05-11$2.39$4.07448,900
2018-05-10$2.40$4.091,973,500
2018-05-09$1.92$3.2713,300
2018-05-08$1.91$3.2617,100
2018-05-07$1.89$3.229,400
2018-05-04$1.85$3.157,400
2018-05-03$1.98$3.37900
2018-05-02$1.93$3.293,400
2018-05-01$1.87$3.1925,900
2018-04-30$1.83$3.125,900
2018-04-27$1.91$3.2613,100
2018-04-26$1.97$3.36171,200
2018-04-25$1.88$3.2020,600
2018-04-24$1.83$3.126,300
2018-04-23$1.83$3.1212,900
2018-04-20$1.89$3.224,500
2018-04-19$1.90$3.2413,500
2018-04-18$1.86$3.17800
2018-04-17$1.92$3.277,100
2018-04-16$1.75$2.981,400
2018-04-13$1.81$3.082,800
2018-04-12$1.79$3.052,700
2018-04-11$1.78$3.0312,300
2018-04-10$1.81$3.080
2018-04-09$1.81$3.080
2018-04-06$1.81$3.081,900
2018-04-05$1.82$3.108,700
2018-04-04$1.78$3.0313,400
2018-04-03$1.75$2.9817,100
2018-04-02$1.74$2.9719,500
2018-03-29$1.78$3.038,600
2018-03-28$1.79$3.0511,100
2018-03-27$1.75$2.984,400
2018-03-26$1.84$3.1419,800
2018-03-23$1.80$3.0715,100
2018-03-22$1.79$3.0510,700
2018-03-21$1.79$3.0553,300
2018-03-20$1.87$3.1913,900
2018-03-19$1.94$3.3112,900
2018-03-16$1.92$3.2711,000
2018-03-15$2.00$3.4154,500
2018-03-14$2.08$3.5433,300
2018-03-13$2.02$3.444,100
2018-03-12$2.07$3.5321,000
2018-03-09$2.18$3.726,200
2018-03-08$2.15$3.668,700
2018-03-07$2.13$3.638,600
2018-03-06$2.17$3.7045,500
2018-03-05$2.18$3.72117,200
2018-03-02$2.12$3.61279,000
2018-03-01$1.98$3.37205,900
2018-02-28$1.98$3.3749,400
2018-02-27$1.92$3.274,000
2018-02-26$1.97$3.3611,000
2018-02-23$1.97$3.364,900
2018-02-22$1.98$3.3716,400
2018-02-21$2.00$3.418,600
2018-02-20$1.99$3.3925,700
2018-02-16$1.91$3.2624,200
2018-02-15$1.97$3.3627,000
2018-02-14$2.05$3.49700
2018-02-13$2.06$3.5115,600
2018-02-12$1.98$3.3722,400
2018-02-09$1.99$3.3918,700
2018-02-08$2.03$3.4616,200
2018-02-07$2.03$3.4619,500
2018-02-06$2.03$3.469,600
2018-02-05$2.01$3.4335,900
2018-02-02$2.01$3.4315,200
2018-02-01$2.05$3.49125,000
2018-01-31$2.01$3.4363,400
2018-01-30$2.10$3.5845,100
2018-01-29$2.12$3.6130,500
2018-01-26$2.06$3.5117,800
2018-01-25$2.10$3.5815,500
2018-01-24$2.14$3.6533,500
2018-01-23$2.17$3.7021,900
2018-01-22$2.17$3.7047,400
2018-01-19$2.17$3.70119,300
2018-01-18$2.10$3.58264,300
2018-01-17$2.05$3.4935,800
2018-01-16$2.06$3.5152,700
2018-01-12$2.08$3.5443,000
2018-01-11$2.14$3.6561,900
2018-01-10$2.09$3.5694,600
2018-01-09$2.10$3.58121,200
2018-01-08$2.22$3.78605,100
2018-01-05$2.09$3.56836,300
2018-01-04$2.08$3.54218,600
2018-01-03$2.09$3.56254,300
2018-01-02$2.17$3.701,712,500