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 — 2008

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2008-12-31$4.65$6.261,400
2008-12-30$5.06$6.81800
2008-12-29$5.06$6.810
2008-12-26$5.06$6.720
2008-12-24$5.06$6.720
2008-12-23$5.06$6.729,800
2008-12-22$5.01$6.660
2008-12-19$5.01$6.662,000
2008-12-18$5.05$6.722,200
2008-12-17$5.13$6.820
2008-12-16$5.13$6.823,000
2008-12-15$5.05$6.721,600
2008-12-12$5.05$6.721,800
2008-12-11$5.20$6.910
2008-12-10$5.20$6.912,600
2008-12-09$5.15$6.850
2008-12-08$5.15$6.850
2008-12-05$5.15$6.851,000
2008-12-04$5.15$6.85400
2008-12-03$5.15$6.851,200
2008-12-02$5.05$6.721,000
2008-12-01$5.83$7.750
2008-11-28$5.83$7.750
2008-11-26$5.83$7.750
2008-11-25$5.83$7.750
2008-11-24$5.83$7.754,800
2008-11-21$5.96$7.930
2008-11-20$5.96$7.936,200
2008-11-19$5.50$7.311,000
2008-11-18$5.51$7.323,200
2008-11-17$5.80$7.711,200
2008-11-14$5.90$7.850
2008-11-13$5.90$7.850
2008-11-12$5.90$7.850
2008-11-11$5.90$7.851,400
2008-11-10$5.90$7.851,800
2008-11-07$5.91$7.850
2008-11-06$5.91$7.852,200
2008-11-05$6.00$7.98200
2008-11-04$5.96$7.920
2008-11-03$5.96$7.920
2008-10-31$5.96$7.922,000
2008-10-30$6.33$8.417,200
2008-10-29$6.11$8.120
2008-10-28$6.11$8.120
2008-10-27$6.11$8.126,800
2008-10-24$6.61$8.784,800
2008-10-23$6.76$8.9834,600
2008-10-22$6.76$8.98400
2008-10-21$6.76$8.980
2008-10-20$6.76$8.98600
2008-10-17$6.76$8.980
2008-10-16$6.76$8.981,200
2008-10-15$7.33$9.740
2008-10-14$7.33$9.740
2008-10-13$7.33$9.741,200
2008-10-10$6.75$8.98400
2008-10-09$7.00$9.310
2008-10-08$7.00$9.311,800
2008-10-07$6.75$8.9815,000
2008-10-06$7.37$9.8015,400
2008-10-03$7.25$9.64400
2008-10-02$7.35$9.775,400
2008-10-01$8.00$10.640
2008-09-30$8.00$10.643,400
2008-09-29$8.00$10.64600
2008-09-26$8.00$10.640
2008-09-25$8.00$10.550
2008-09-24$8.00$10.553,200
2008-09-23$8.25$10.88600
2008-09-22$7.11$9.370
2008-09-19$7.11$9.375,600
2008-09-18$8.45$11.157,000
2008-09-17$8.12$10.702,000
2008-09-16$7.45$9.82800
2008-09-15$7.06$9.310
2008-09-12$7.06$9.310
2008-09-11$7.06$9.31600
2008-09-10$7.50$9.890
2008-09-09$7.50$9.890
2008-09-08$7.50$9.891,600
2008-09-05$7.46$9.83400
2008-09-04$7.26$9.571,000
2008-09-03$7.29$9.611,800
2008-09-02$7.48$9.870
2008-08-29$7.48$9.87400
2008-08-28$7.13$9.402,800
2008-08-27$6.76$8.921,800
2008-08-26$7.50$9.897,600
2008-08-25$7.71$10.164,000
2008-08-22$9.24$12.19800
2008-08-21$7.52$9.923,000
2008-08-20$7.76$10.243,000
2008-08-19$7.51$9.90200
2008-08-18$7.50$9.891,600
2008-08-15$7.51$9.90200
2008-08-14$7.50$9.891,200
2008-08-13$7.50$9.893,000
2008-08-12$7.50$9.890
2008-08-11$7.50$9.890
2008-08-08$7.50$9.892,600
2008-08-07$7.21$9.500
2008-08-06$7.21$9.500
2008-08-05$7.21$9.500
2008-08-04$7.21$9.50400
2008-08-01$7.38$9.734,800
2008-07-31$7.55$9.960
2008-07-30$7.55$9.960
2008-07-29$7.55$9.966,000
2008-07-28$7.87$10.382,400
2008-07-25$7.91$10.430
2008-07-24$7.91$10.433,000
2008-07-23$7.88$10.394,000
2008-07-22$7.88$10.390
2008-07-21$7.88$10.39200
2008-07-18$7.99$10.530
2008-07-17$7.99$10.530
2008-07-16$7.99$10.530
2008-07-15$7.99$10.530
2008-07-14$7.99$10.530
2008-07-11$7.99$10.530
2008-07-10$7.99$10.530
2008-07-09$7.99$10.530
2008-07-08$7.99$10.53200
2008-07-07$7.99$10.53200
2008-07-03$7.88$10.390
2008-07-02$7.88$10.391,000
2008-07-01$7.88$10.392,000
2008-06-30$7.91$10.430
2008-06-27$7.91$10.430
2008-06-26$7.91$10.43600
2008-06-25$7.98$10.430
2008-06-24$7.98$10.430
2008-06-23$7.98$10.431,400
2008-06-20$8.11$10.60400
2008-06-19$8.56$11.200
2008-06-18$8.56$11.200
2008-06-17$8.56$11.20400
2008-06-16$8.50$11.12600
2008-06-13$8.00$10.470
2008-06-12$8.00$10.470
2008-06-11$8.00$10.470
2008-06-10$8.00$10.470
2008-06-09$8.00$10.470
2008-06-06$8.00$10.47200
2008-06-05$8.00$10.470
2008-06-04$8.00$10.476,800
2008-06-03$8.04$10.510
2008-06-02$8.04$10.514,800
2008-05-30$8.00$10.470
2008-05-29$8.00$10.470
2008-05-28$8.00$10.470
2008-05-27$8.00$10.478,000
2008-05-23$7.98$10.431,400
2008-05-22$7.93$10.370
2008-05-21$7.93$10.370
2008-05-20$7.93$10.372,400
2008-05-19$8.05$10.530
2008-05-16$8.05$10.530
2008-05-15$8.05$10.531,800
2008-05-14$7.93$10.371,600
2008-05-13$7.92$10.360
2008-05-12$7.92$10.361,800
2008-05-09$8.25$10.792,800
2008-05-08$7.76$10.150
2008-05-07$7.76$10.150
2008-05-06$7.76$10.151,800
2008-05-05$8.08$10.563,400
2008-05-02$8.07$10.55200
2008-05-01$8.00$10.470
2008-04-30$8.00$10.472,800
2008-04-29$8.00$10.470
2008-04-28$8.00$10.472,000
2008-04-25$8.29$10.853,800
2008-04-24$8.03$10.51600
2008-04-23$8.07$10.55800
2008-04-22$8.50$11.121,200
2008-04-21$8.60$11.241,800
2008-04-18$8.11$10.600
2008-04-17$8.11$10.60400
2008-04-16$8.57$11.211,400
2008-04-15$8.20$10.737,200
2008-04-14$8.93$11.68200
2008-04-11$8.51$11.13600
2008-04-10$8.97$11.73600
2008-04-09$8.83$11.550
2008-04-08$8.83$11.55600
2008-04-07$8.83$11.55400
2008-04-04$8.40$10.99600
2008-04-03$8.75$11.450
2008-04-02$8.75$11.450
2008-04-01$8.75$11.450
2008-03-31$8.75$11.45400
2008-03-28$8.98$11.743,800
2008-03-27$8.70$11.380
2008-03-26$8.70$11.301,000
2008-03-25$8.50$11.040
2008-03-24$8.50$11.041,600
2008-03-20$8.70$11.301,800
2008-03-19$9.00$11.69600
2008-03-18$9.01$11.697,200
2008-03-17$9.75$12.661,600
2008-03-14$9.59$12.455,800
2008-03-13$9.01$11.7017,600
2008-03-12$8.88$11.530
2008-03-11$8.88$11.53400
2008-03-10$9.37$12.172,200
2008-03-07$9.16$11.898,600
2008-03-06$9.45$12.273,400
2008-03-05$9.40$12.212,400
2008-03-04$9.18$11.914,200
2008-03-03$9.50$12.342,400
2008-02-29$9.85$12.790
2008-02-28$9.85$12.793,600
2008-02-27$9.85$12.79200
2008-02-26$9.86$12.80200
2008-02-25$9.83$12.761,000
2008-02-22$9.94$12.914,200
2008-02-21$9.90$12.85600
2008-02-20$9.80$12.734,000
2008-02-19$9.50$12.345,600
2008-02-15$9.35$12.14400
2008-02-14$9.25$12.014,000
2008-02-13$9.00$11.6918,600
2008-02-12$8.83$11.46400
2008-02-11$8.80$11.43600
2008-02-08$8.93$11.600
2008-02-07$8.93$11.600
2008-02-06$8.93$11.60800
2008-02-05$9.00$11.6912,800
2008-02-04$8.85$11.490
2008-02-01$8.85$11.490
2008-01-31$8.85$11.490
2008-01-30$8.85$11.492,400
2008-01-29$8.99$11.673,200
2008-01-28$8.75$11.360
2008-01-25$8.75$11.362,400
2008-01-24$8.50$11.04400
2008-01-23$8.75$11.3612,200
2008-01-22$8.70$11.302,000
2008-01-18$8.93$11.59800
2008-01-17$8.51$11.041,000
2008-01-16$8.40$10.912,400
2008-01-15$8.41$10.910
2008-01-14$8.41$10.912,600
2008-01-11$8.75$11.361,600
2008-01-10$8.88$11.520
2008-01-09$8.88$11.520
2008-01-08$8.88$11.52400
2008-01-07$8.48$11.011,200
2008-01-04$8.35$10.84400
2008-01-03$9.00$11.697,800
2008-01-02$8.88$11.522,000