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 — 1993

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1993-12-31$3.44$3.4453,600
1993-12-30$3.38$3.3711,200
1993-12-29$3.38$3.3722,800
1993-12-28$3.56$3.564,400
1993-12-27$3.56$3.5618,000
1993-12-23$3.50$3.5015,600
1993-12-22$3.41$3.4124,000
1993-12-21$3.38$3.3787,200
1993-12-20$3.38$3.3721,600
1993-12-17$3.63$3.627,600
1993-12-16$3.38$3.378,000
1993-12-15$3.63$3.6221,600
1993-12-14$3.41$3.4111,200
1993-12-13$3.56$3.564,000
1993-12-10$3.50$3.50225,200
1993-12-09$3.31$3.31100,000
1993-12-08$3.31$3.3167,200
1993-12-07$3.44$3.44282,800
1993-12-06$3.38$3.37324,800
1993-12-03$3.13$3.1229,200
1993-12-02$3.38$3.3710,400
1993-12-01$3.13$3.12232,000
1993-11-30$3.25$3.25157,200
1993-11-29$3.19$3.1935,600
1993-11-26$3.03$3.0312,400
1993-11-24$3.00$3.0024,400
1993-11-23$3.13$3.1292,400
1993-11-22$3.13$3.1255,600
1993-11-19$3.25$3.2596,400
1993-11-18$3.38$3.3747,600
1993-11-17$3.69$3.6936,400
1993-11-16$3.75$3.75105,200
1993-11-15$3.88$3.8717,600
1993-11-12$3.88$3.8792,800
1993-11-11$3.69$3.6949,600
1993-11-10$3.94$3.9410,800
1993-11-09$3.69$3.6960,400
1993-11-08$3.88$3.87115,600
1993-11-05$3.44$3.44145,600
1993-11-04$3.31$3.3136,400
1993-11-03$3.50$3.5029,200
1993-11-02$3.50$3.5094,800
1993-11-01$3.44$3.44120,400
1993-10-29$3.56$3.56586,000
1993-10-28$3.56$3.56128,400
1993-10-27$3.81$3.81162,000
1993-10-26$3.81$3.81340,400
1993-10-25$3.91$3.91110,800
1993-10-22$3.94$3.9463,600
1993-10-21$4.00$4.00330,000
1993-10-20$4.31$4.3152,800
1993-10-19$4.25$4.25114,800
1993-10-18$4.44$4.4471,200
1993-10-15$4.56$4.5618,800
1993-10-14$4.56$4.5636,800
1993-10-13$4.44$4.4445,200
1993-10-12$4.38$4.3776,000
1993-10-11$4.19$4.1975,600
1993-10-08$4.50$4.5040,000
1993-10-07$4.75$4.7511,600
1993-10-06$4.78$4.7831,600
1993-10-05$4.75$4.75104,800
1993-10-04$4.81$4.81102,800
1993-10-01$4.88$4.8764,000
1993-09-30$5.06$5.06219,600
1993-09-29$4.63$4.6254,800
1993-09-28$4.50$4.5020,400
1993-09-27$4.50$4.5023,200
1993-09-24$4.69$4.6920,000
1993-09-23$4.50$4.506,400
1993-09-22$4.69$4.697,200
1993-09-21$4.50$4.50103,200
1993-09-20$4.69$4.69128,000
1993-09-17$4.50$4.5082,000
1993-09-16$4.31$4.3148,400
1993-09-15$4.25$4.256,000
1993-09-14$4.44$4.4416,000
1993-09-13$4.25$4.2524,800
1993-09-10$4.25$4.25136,000
1993-09-09$4.38$4.37250,800
1993-09-08$4.38$4.37308,000
1993-09-07$4.75$4.75140,800
1993-09-03$4.63$4.6282,800
1993-09-02$4.63$4.6240,400
1993-09-01$4.75$4.75106,400
1993-08-31$4.81$4.81297,600
1993-08-30$4.69$4.69252,800
1993-08-27$4.50$4.50117,600
1993-08-26$4.06$4.06146,800
1993-08-25$4.06$4.0655,600
1993-08-24$4.06$4.06152,800
1993-08-23$4.19$4.1940,000
1993-08-20$3.94$3.9475,600
1993-08-19$4.00$4.00155,200
1993-08-18$4.13$4.12261,200
1993-08-17$3.81$3.819,600
1993-08-16$3.75$3.75200,000
1993-08-13$3.81$3.81143,600
1993-08-12$3.94$3.9464,800
1993-08-11$3.81$3.81358,000
1993-08-10$3.66$3.66462,000
1993-08-09$3.63$3.62250,000
1993-08-06$3.28$3.2864,400
1993-08-05$3.25$3.2553,200
1993-08-04$3.25$3.25214,000
1993-08-03$3.25$3.2574,400
1993-08-02$3.25$3.2585,600
1993-07-30$3.06$3.0637,200
1993-07-29$3.19$3.1928,000
1993-07-28$3.06$3.06246,400
1993-07-27$2.94$2.9457,600
1993-07-26$3.00$3.0085,600
1993-07-23$3.06$3.06246,400
1993-07-22$3.19$3.19498,800
1993-07-21$2.88$2.8777,200
1993-07-20$2.88$2.8764,000
1993-07-19$2.75$2.7550,800
1993-07-16$2.63$2.62105,200
1993-07-15$2.88$2.8759,600
1993-07-14$2.88$2.8754,000
1993-07-13$2.94$2.9495,600
1993-07-12$3.03$3.0326,000
1993-07-09$3.00$3.0071,600
1993-07-08$2.94$2.94143,600
1993-07-07$3.09$3.09380,800
1993-07-06$2.91$2.91137,600
1993-07-02$2.78$2.78100,800
1993-07-01$2.69$2.6945,600
1993-06-30$2.69$2.69126,000
1993-06-29$2.56$2.56158,800
1993-06-28$2.63$2.62268,800
1993-06-25$2.56$2.5672,800
1993-06-24$2.50$2.50108,000
1993-06-23$2.44$2.4476,800
1993-06-22$2.44$2.4413,600
1993-06-21$2.50$2.5032,000
1993-06-18$2.50$2.50118,000
1993-06-17$2.47$2.47262,000
1993-06-16$2.28$2.2838,400
1993-06-15$2.38$2.3740,800
1993-06-14$2.38$2.37103,200
1993-06-11$2.38$2.3718,000
1993-06-10$2.47$2.47128,000
1993-06-09$2.41$2.41106,400
1993-06-08$2.44$2.44128,800
1993-06-07$2.56$2.56129,200
1993-06-04$2.50$2.50463,600
1993-06-03$2.38$2.3788,000
1993-06-02$2.34$2.3423,200
1993-06-01$2.38$2.37119,600
1993-05-28$2.31$2.3149,200
1993-05-27$2.13$2.12195,200
1993-05-26$2.19$2.1985,200
1993-05-25$2.38$2.3793,200
1993-05-24$2.25$2.25163,200
1993-05-21$2.13$2.1236,800
1993-05-20$2.13$2.12155,600
1993-05-19$1.94$1.94122,000
1993-05-18$1.88$1.87307,600
1993-05-17$1.84$1.8487,600
1993-05-14$1.81$1.8182,400
1993-05-13$1.81$1.81186,000
1993-05-12$1.91$1.91188,000
1993-05-11$1.84$1.8438,400
1993-05-10$1.91$1.91171,600
1993-05-07$2.03$2.0361,200
1993-05-06$2.09$2.0964,400
1993-05-05$2.00$2.0047,200
1993-05-04$2.13$2.1236,400
1993-05-03$2.03$2.036,800
1993-04-30$2.13$2.1210,000
1993-04-29$2.13$2.1211,600
1993-04-28$2.09$2.0960,000
1993-04-27$2.13$2.12139,200
1993-04-26$2.16$2.16124,800
1993-04-23$2.16$2.1640,400
1993-04-22$2.31$2.3120,000
1993-04-21$2.44$2.44100,000
1993-04-20$2.31$2.3151,200
1993-04-19$2.38$2.3754,000
1993-04-16$2.38$2.3734,000
1993-04-15$2.34$2.34133,600
1993-04-14$2.47$2.4733,200
1993-04-13$2.47$2.4796,400
1993-04-12$2.38$2.3719,200
1993-04-08$2.38$2.3730,400
1993-04-07$2.34$2.3428,000
1993-04-06$2.47$2.4759,200
1993-04-05$2.53$2.5363,200
1993-04-02$2.47$2.4797,200
1993-04-01$2.47$2.47236,000
1993-03-31$2.47$2.4791,200
1993-03-30$2.47$2.47196,400
1993-03-29$2.47$2.4797,600
1993-03-26$2.38$2.37246,000
1993-03-25$2.41$2.41390,400
1993-03-24$2.16$2.16223,200
1993-03-23$2.00$2.0060,000
1993-03-22$2.03$2.0366,400
1993-03-19$2.03$2.03148,000
1993-03-18$1.97$1.9782,000
1993-03-17$1.91$1.9120,000
1993-03-16$1.91$1.9122,400
1993-03-15$1.94$1.9418,400
1993-03-12$1.81$1.8166,800
1993-03-11$1.88$1.8738,000
1993-03-10$1.88$1.8766,800
1993-03-09$1.88$1.8730,800
1993-03-08$1.97$1.9717,200
1993-03-05$1.91$1.9162,800
1993-03-04$1.88$1.87188,000
1993-03-03$1.81$1.81192,400
1993-03-02$1.88$1.8729,200
1993-03-01$2.06$2.0610,400
1993-02-26$2.06$2.0611,600
1993-02-25$1.97$1.9724,400
1993-02-24$2.06$2.0637,200
1993-02-23$2.06$2.0620,000
1993-02-22$2.00$2.0039,600
1993-02-19$1.97$1.9753,200
1993-02-18$2.00$2.0071,200
1993-02-17$1.94$1.94158,800
1993-02-16$2.00$2.00107,200
1993-02-12$2.09$2.0958,800
1993-02-11$2.03$2.03106,000
1993-02-10$2.00$2.0015,200
1993-02-09$2.00$2.00105,600
1993-02-08$2.02$2.02102,800
1993-02-05$1.97$1.97346,400
1993-02-04$2.00$2.00182,000
1993-02-03$1.91$1.91135,200
1993-02-02$1.91$1.91133,600
1993-02-01$1.97$1.9792,800
1993-01-29$1.94$1.9442,000
1993-01-28$1.97$1.9798,400
1993-01-27$2.06$2.06147,600
1993-01-26$2.13$2.12363,600
1993-01-25$2.13$2.12760,400
1993-01-22$2.09$2.09744,400
1993-01-21$1.84$1.841,586,800
1993-01-20$1.63$1.62922,800
1993-01-19$1.38$1.3780,400
1993-01-18$1.31$1.3117,200
1993-01-15$1.23$1.238,400
1993-01-14$1.23$1.2322,800
1993-01-13$1.22$1.225,600
1993-01-12$1.22$1.228,800
1993-01-11$1.23$1.2336,000
1993-01-08$1.31$1.314,800
1993-01-07$1.31$1.314,000
1993-01-06$1.25$1.2511,200
1993-01-05$1.27$1.2730,000
1993-01-04$1.27$1.2710,800