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 — 2005

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2005-12-30$13.07$14.793,800
2005-12-29$13.00$14.71600
2005-12-28$13.09$14.811,200
2005-12-27$12.98$14.60200
2005-12-23$12.97$14.60200
2005-12-22$13.23$14.894,600
2005-12-21$12.75$14.350
2005-12-20$12.75$14.350
2005-12-19$12.75$14.352,000
2005-12-16$12.90$14.510
2005-12-15$12.90$14.511,000
2005-12-14$12.40$13.951,200
2005-12-13$12.09$13.60800
2005-12-12$11.78$13.26400
2005-12-09$11.53$12.972,600
2005-12-08$11.33$12.758,400
2005-12-07$10.74$12.081,600
2005-12-06$11.22$12.634,000
2005-12-05$11.25$12.665,200
2005-12-02$12.35$13.902,200
2005-12-01$12.69$14.28800
2005-11-30$12.38$13.93600
2005-11-29$12.71$14.3013,000
2005-11-28$13.19$14.8512,000
2005-11-25$12.35$13.9012,600
2005-11-23$11.21$12.61200
2005-11-22$11.25$12.661,000
2005-11-21$11.25$12.66600
2005-11-18$11.45$12.891,000
2005-11-17$11.13$12.521,200
2005-11-16$10.75$12.101,000
2005-11-15$10.50$11.822,600
2005-11-14$10.75$12.10200
2005-11-11$10.75$12.100
2005-11-10$10.75$12.108,200
2005-11-09$10.52$11.84600
2005-11-08$10.56$11.894,000
2005-11-07$10.87$12.234,200
2005-11-04$10.73$12.072,200
2005-11-03$11.03$12.421,200
2005-11-02$11.35$12.773,600
2005-11-01$11.38$12.802,400
2005-10-31$11.38$12.802,000
2005-10-28$11.07$12.460
2005-10-27$11.07$12.463,000
2005-10-26$11.37$12.80400
2005-10-25$11.25$12.661,200
2005-10-24$11.25$12.663,200
2005-10-21$11.00$12.384,800
2005-10-20$11.13$12.522,400
2005-10-19$11.00$12.385,800
2005-10-18$10.60$11.930
2005-10-17$10.60$11.939,600
2005-10-14$10.53$11.852,400
2005-10-13$10.80$12.154,800
2005-10-12$11.15$12.5522,600
2005-10-11$11.24$12.6545,800
2005-10-10$8.63$9.710
2005-10-07$8.63$9.710
2005-10-06$8.63$9.711,400
2005-10-05$8.63$9.710
2005-10-04$8.63$9.714,000
2005-10-03$8.63$9.712,200
2005-09-30$8.63$9.71600
2005-09-29$8.54$9.61600
2005-09-28$8.69$9.780
2005-09-27$8.69$9.701,400
2005-09-26$8.50$9.501,000
2005-09-23$8.55$9.55600
2005-09-22$8.51$9.500
2005-09-21$8.51$9.500
2005-09-20$8.51$9.500
2005-09-19$8.51$9.501,000
2005-09-16$8.50$9.502,600
2005-09-15$8.50$9.506,200
2005-09-14$8.50$9.50200
2005-09-13$8.50$9.501,200
2005-09-12$8.50$9.500
2005-09-09$8.50$9.502,000
2005-09-08$8.50$9.506,000
2005-09-07$8.53$9.520
2005-09-06$8.53$9.52800
2005-09-02$8.52$9.511,000
2005-09-01$8.58$9.590
2005-08-31$8.58$9.590
2005-08-30$8.58$9.592,200
2005-08-29$8.58$9.58800
2005-08-26$8.52$9.521,400
2005-08-25$8.65$9.660
2005-08-24$8.65$9.660
2005-08-23$8.65$9.66600
2005-08-22$8.75$9.782,400
2005-08-19$8.85$9.891,800
2005-08-18$8.88$9.910
2005-08-17$8.88$9.910
2005-08-16$8.88$9.911,200
2005-08-15$8.76$9.781,600
2005-08-12$8.88$9.910
2005-08-11$8.88$9.910
2005-08-10$8.88$9.910
2005-08-09$8.88$9.910
2005-08-08$8.88$9.91200
2005-08-05$9.09$10.15800
2005-08-04$8.78$9.811,200
2005-08-03$9.15$10.220
2005-08-02$9.15$10.222,200
2005-08-01$9.00$10.050
2005-07-29$9.00$10.050
2005-07-28$9.00$10.052,800
2005-07-27$8.63$9.642,800
2005-07-26$8.63$9.64600
2005-07-25$8.63$9.64400
2005-07-22$8.63$9.6411,600
2005-07-21$8.87$9.905,000
2005-07-20$8.50$9.500
2005-07-19$8.50$9.502,000
2005-07-18$8.81$9.841,200
2005-07-15$8.88$9.912,200
2005-07-14$8.50$9.501,400
2005-07-13$8.77$9.791,600
2005-07-12$8.50$9.500
2005-07-11$8.50$9.500
2005-07-08$8.50$9.502,000
2005-07-07$8.50$9.503,200
2005-07-06$8.58$9.590
2005-07-05$8.58$9.590
2005-07-01$8.58$9.590
2005-06-30$8.58$9.590
2005-06-29$8.58$9.590
2005-06-28$8.58$9.59200
2005-06-27$8.75$9.705,000
2005-06-24$8.75$9.701,000
2005-06-23$8.90$9.87800
2005-06-22$8.75$9.700
2005-06-21$8.75$9.700
2005-06-20$8.75$9.700
2005-06-17$8.75$9.702,800
2005-06-16$8.63$9.561,400
2005-06-15$8.45$9.373,600
2005-06-14$8.73$9.670
2005-06-13$8.73$9.671,800
2005-06-10$9.05$10.03200
2005-06-09$8.40$9.310
2005-06-08$8.40$9.31400
2005-06-07$8.40$9.312,800
2005-06-06$8.50$9.431,200
2005-06-03$8.82$9.7719,800
2005-06-02$8.63$9.560
2005-06-01$8.63$9.563,800
2005-05-31$8.44$9.362,200
2005-05-27$8.60$9.53400
2005-05-26$8.40$9.312,000
2005-05-25$8.58$9.514,400
2005-05-24$8.63$9.569,600
2005-05-23$8.83$9.791,200
2005-05-20$9.00$9.981,200
2005-05-19$9.04$10.026,000
2005-05-18$9.40$10.42200
2005-05-17$9.00$9.980
2005-05-16$9.00$9.980
2005-05-13$9.00$9.981,600
2005-05-12$8.88$9.840
2005-05-11$8.88$9.840
2005-05-10$8.88$9.840
2005-05-09$8.88$9.840
2005-05-06$8.88$9.841,600
2005-05-05$8.78$9.740
2005-05-04$8.78$9.741,400
2005-05-03$8.96$9.940
2005-05-02$8.96$9.94200
2005-04-29$8.97$9.942,600
2005-04-28$9.75$10.810
2005-04-27$9.75$10.810
2005-04-26$9.75$10.810
2005-04-25$9.75$10.81800
2005-04-22$9.75$10.81800
2005-04-21$9.49$10.52200
2005-04-20$9.25$10.267,400
2005-04-19$8.71$9.652,800
2005-04-18$8.90$9.861,600
2005-04-15$9.45$10.481,000
2005-04-14$9.44$10.474,000
2005-04-13$9.89$10.974,400
2005-04-12$10.00$11.09200
2005-04-11$9.94$11.021,400
2005-04-08$10.13$11.233,200
2005-04-07$10.24$11.352,000
2005-04-06$10.18$11.283,400
2005-04-05$10.38$11.510
2005-04-04$10.38$11.511,200
2005-04-01$10.18$11.282,800
2005-03-31$10.19$11.29400
2005-03-30$10.22$11.331,200
2005-03-29$10.35$11.47400
2005-03-28$10.71$11.802,000
2005-03-24$10.13$11.160
2005-03-23$10.13$11.16400
2005-03-22$10.08$11.100
2005-03-21$10.08$11.101,000
2005-03-18$10.21$11.252,000
2005-03-17$10.73$11.824,000
2005-03-16$10.50$11.57800
2005-03-15$10.49$11.565,400
2005-03-14$10.73$11.824,200
2005-03-11$10.32$11.370
2005-03-10$10.32$11.370
2005-03-09$10.32$11.375,400
2005-03-08$10.50$11.572,200
2005-03-07$10.21$11.2514,800
2005-03-04$10.16$11.194,000
2005-03-03$10.25$11.291,200
2005-03-02$10.18$11.211,200
2005-03-01$10.27$11.3113,600
2005-02-28$9.80$10.8010,400
2005-02-25$9.53$10.509,800
2005-02-24$9.38$10.330
2005-02-23$9.38$10.330
2005-02-22$9.38$10.330
2005-02-18$9.38$10.332,000
2005-02-17$9.40$10.36400
2005-02-16$9.50$10.472,800
2005-02-15$9.38$10.34400
2005-02-14$9.49$10.462,200
2005-02-11$9.38$10.330
2005-02-10$9.38$10.333,200
2005-02-09$9.40$10.360
2005-02-08$9.40$10.36200
2005-02-07$9.50$10.473,400
2005-02-04$9.30$10.250
2005-02-03$9.30$10.25200
2005-02-02$9.50$10.47400
2005-02-01$9.25$10.190
2005-01-31$9.25$10.197,600
2005-01-28$9.25$10.190
2005-01-27$9.25$10.190
2005-01-26$9.25$10.19600
2005-01-25$9.25$10.19400
2005-01-24$9.55$10.530
2005-01-21$9.55$10.531,200
2005-01-20$9.13$10.064,600
2005-01-19$9.38$10.340
2005-01-18$9.38$10.343,800
2005-01-14$9.38$10.344,400
2005-01-13$9.38$10.34200
2005-01-12$9.38$10.343,200
2005-01-11$9.39$10.35200
2005-01-10$9.39$10.35400
2005-01-07$9.39$10.350
2005-01-06$9.39$10.35400
2005-01-05$9.38$10.342,400
2005-01-04$9.42$10.38800
2005-01-03$9.73$10.720