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 — 2020

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2020-12-31$3.44$5.86333,500——
2020-12-30$3.70$6.311,002,200——
2020-12-29$3.44$5.8615,319,000——
2020-12-28$2.40$4.09793,400——
2020-12-24$2.34$3.994,900——
2020-12-23$2.34$3.998,500——
2020-12-22$2.44$4.164,500——
2020-12-21$2.47$4.2115,400——
2020-12-18$2.38$4.067,200——
2020-12-17$2.55$4.352,100——
2020-12-16$2.55$4.353,300——
2020-12-15$2.50$4.26700——
2020-12-14$2.45$4.183,100——
2020-12-11$2.38$4.06600——
2020-12-10$2.38$4.064,300——
2020-12-09$2.50$4.2610,100——
2020-12-08$2.51$4.283,200——
2020-12-07$2.57$4.383,400——
2020-12-04$2.54$4.3315,300——
2020-12-03$2.70$4.609,800——
2020-12-02$2.56$4.3615,000——
2020-12-01$2.80$4.77123,800——
2020-11-30$2.16$3.687,800——
2020-11-27$2.20$3.75300——
2020-11-25$2.13$3.635,100——
2020-11-24$2.15$3.6618,900——
2020-11-23$2.09$3.561,000——
2020-11-20$2.08$3.541,100——
2020-11-19$2.09$3.568,300——
2020-11-18$2.09$3.561,100——
2020-11-17$2.12$3.614,200——
2020-11-16$2.10$3.587,800——
2020-11-13$2.16$3.683,600——
2020-11-12$2.08$3.541,300——
2020-11-11$2.16$3.683,000——
2020-11-10$2.11$3.602,500——
2020-11-09$2.06$3.51500——
2020-11-06$2.06$3.51600——
2020-11-05$2.06$3.511,900——
2020-11-04$2.10$3.581,600——
2020-11-03$2.11$3.60700——
2020-11-02$2.03$3.463,800——
2020-10-30$2.07$3.530——
2020-10-29$2.07$3.533,900——
2020-10-28$2.10$3.584,900——
2020-10-27$2.19$3.737,700——
2020-10-26$2.14$3.6511,600——
2020-10-23$2.16$3.682,400——
2020-10-22$2.15$3.66800——
2020-10-21$2.24$3.8211,600——
2020-10-20$2.28$3.8961,200——
2020-10-19$2.13$3.635,500——
2020-10-16$2.20$3.7514,000——
2020-10-15$2.07$3.538,800——
2020-10-14$2.20$3.753,300——
2020-10-13$2.19$3.7313,000——
2020-10-12$2.31$3.94164,600——
2020-10-09$2.17$3.706,000——
2020-10-08$2.19$3.7321,500——
2020-10-07$2.20$3.756,900——
2020-10-06$2.15$3.669,300——
2020-10-05$2.15$3.668,500——
2020-10-02$2.17$3.70200——
2020-10-01$2.17$3.7010,000——
2020-09-30$2.14$3.651,800——
2020-09-29$2.14$3.657,500——
2020-09-28$2.20$3.7529,800——
2020-09-25$2.22$3.781,600——
2020-09-24$2.32$3.9542,900——
2020-09-23$2.17$3.70800——
2020-09-22$2.14$3.651,000——
2020-09-21$2.16$3.689,400——
2020-09-18$2.07$3.537,800——
2020-09-17$2.15$3.662,800——
2020-09-16$2.07$3.539,700——
2020-09-15$2.05$3.4921,100——
2020-09-14$2.15$3.667,000——
2020-09-11$2.08$3.5435,900——
2020-09-10$1.97$3.367,800——
2020-09-09$1.95$3.324,800——
2020-09-08$1.98$3.3716,500——
2020-09-04$1.91$3.2614,600——
2020-09-03$1.94$3.3121,500——
2020-09-02$2.07$3.5319,400——
2020-09-01$2.05$3.4944,400——
2020-08-31$2.17$3.7031,200——
2020-08-28$2.24$3.8216,500——
2020-08-27$2.27$3.87144,600——
2020-08-26$2.14$3.6530,300——
2020-08-25$2.32$3.9548,100——
2020-08-24$2.34$3.99150,100——
2020-08-21$2.32$3.9580,800——
2020-08-20$2.66$4.53106,400——
2020-08-19$2.17$3.7023,500——
2020-08-18$2.35$4.00109,400——
2020-08-17$2.10$3.588,000——
2020-08-14$2.04$3.4833,300——
2020-08-13$2.09$3.5661,900——
2020-08-12$2.10$3.5878,500——
2020-08-11$2.06$3.51542,600——
2020-08-10$2.40$4.0955,500——
2020-08-07$2.33$3.9730,000——
2020-08-06$2.34$3.9933,300——
2020-08-05$2.24$3.8248,500——
2020-08-04$2.33$3.97300,800——
2020-08-03$1.94$3.3131,500——
2020-07-31$1.90$3.2425,300——
2020-07-30$1.90$3.2419,900——
2020-07-29$1.87$3.1929,300——
2020-07-28$2.01$3.43105,200——
2020-07-27$2.03$3.46306,200——
2020-07-24$1.90$3.2468,700——
2020-07-23$1.77$3.02105,700——
2020-07-22$1.73$2.95162,500——
2020-07-21$1.63$2.7831,200——
2020-07-20$1.58$2.6979,400——
2020-07-17$1.58$2.6925,100——
2020-07-16$1.62$2.7611,900——
2020-07-15$1.58$2.6920,900——
2020-07-14$1.58$2.6928,400——
2020-07-13$1.53$2.6130,900——
2020-07-10$1.78$3.0390,300——
2020-07-09$1.80$3.07885,100——
2020-07-08$1.45$2.479,700——
2020-07-07$1.43$2.442,300——
2020-07-06$1.48$2.529,600——
2020-07-02$1.48$2.5234,000——
2020-07-01$1.48$2.52121,700——
2020-06-30$1.36$2.3226,600——
2020-06-29$1.42$2.426,600——
2020-06-26$1.40$2.3912,400——
2020-06-25$1.46$2.4916,000——
2020-06-24$1.48$2.5234,600——
2020-06-23$1.55$2.6455,200——
2020-06-22$1.76$3.0099,400——
2020-06-19$1.61$2.7464,200——
2020-06-18$1.65$2.8151,300——
2020-06-17$1.72$2.93313,300——
2020-06-16$1.96$3.34373,400——
2020-06-15$1.39$2.3757,600——
2020-06-12$1.38$2.35173,500——
2020-06-11$1.16$1.9825,000——
2020-06-10$1.27$2.1639,300——
2020-06-09$1.41$2.40147,400——
2020-06-08$1.28$2.1817,500——
2020-06-05$1.25$2.1319,900——
2020-06-04$1.20$2.058,900——
2020-06-03$1.25$2.1320,800——
2020-06-02$1.27$2.1658,800——
2020-06-01$1.13$1.9316,400——
2020-05-29$1.13$1.933,500——
2020-05-28$1.10$1.879,600——
2020-05-27$1.15$1.964,400——
2020-05-26$1.15$1.963,700——
2020-05-22$1.14$1.9413,400——
2020-05-21$1.12$1.913,600——
2020-05-20$1.14$1.9417,500——
2020-05-19$1.11$1.8917,500——
2020-05-18$1.14$1.9413,600——
2020-05-15$1.16$1.9814,900——
2020-05-14$1.07$1.8214,500——
2020-05-13$1.11$1.8914,000——
2020-05-12$1.17$1.999,800——
2020-05-11$1.20$2.0538,400——
2020-05-08$1.12$1.9158,700——
2020-05-07$1.23$2.1024,900——
2020-05-06$1.23$2.107,000——
2020-05-05$1.20$2.052,200——
2020-05-04$1.23$2.107,600——
2020-05-01$1.20$2.0515,900——
2020-04-30$1.32$2.2537,800——
2020-04-29$1.42$2.4233,300——
2020-04-28$1.42$2.4245,200——
2020-04-27$1.36$2.3258,200——
2020-04-24$1.24$2.11131,600——
2020-04-23$1.19$2.0394,700——
2020-04-22$1.15$1.96489,100——
2020-04-21$1.16$1.9858,700——
2020-04-20$1.08$1.8428,400——
2020-04-17$1.12$1.9151,800——
2020-04-16$1.21$2.06191,900——
2020-04-15$1.22$2.082,189,500——
2020-04-14$0.94$1.609,300——
2020-04-13$0.95$1.6224,000——
2020-04-09$0.83$1.4113,600——
2020-04-08$0.83$1.413,100——
2020-04-07$0.85$1.458,800——
2020-04-06$0.84$1.43900——
2020-04-03$0.82$1.401,100——
2020-04-02$0.86$1.47800——
2020-04-01$0.84$1.435,400——
2020-03-31$0.88$1.50600——
2020-03-30$0.88$1.502,800——
2020-03-27$0.89$1.522,700——
2020-03-26$0.87$1.485,500——
2020-03-25$0.83$1.4164,400——
2020-03-24$0.92$1.579,700——
2020-03-23$0.87$1.481,200——
2020-03-20$0.83$1.411,500——
2020-03-19$0.90$1.537,500——
2020-03-18$0.90$1.539,500——
2020-03-17$1.00$1.7012,300——
2020-03-16$0.99$1.6925,700——
2020-03-13$0.94$1.6014,500——
2020-03-12$1.00$1.707,900——
2020-03-11$1.02$1.746,800——
2020-03-10$1.06$1.8145,200——
2020-03-09$1.04$1.7721,700——
2020-03-06$1.15$1.965,300——
2020-03-05$1.20$2.051,600——
2020-03-04$1.20$2.0514,600——
2020-03-03$1.24$2.112,600——
2020-03-02$1.26$2.159,000——
2020-02-28$1.19$2.0319,400——
2020-02-27$1.25$2.132,300——
2020-02-26$1.23$2.1027,900——
2020-02-25$1.34$2.282,000——
2020-02-24$1.39$2.3751,500——
2020-02-21$1.40$2.393,600——
2020-02-20$1.39$2.3719,600——
2020-02-19$1.36$2.3236,100——
2020-02-18$1.44$2.4515,300——
2020-02-14$1.45$2.471,000——
2020-02-13$1.47$2.518,300——
2020-02-12$1.48$2.522,800——
2020-02-11$1.44$2.453,800——
2020-02-10$1.44$2.454,100——
2020-02-07$1.46$2.493,500——
2020-02-06$1.44$2.453,200——
2020-02-05$1.44$2.454,400——
2020-02-04$1.48$2.526,000——
2020-02-03$1.47$2.516,600——
2020-01-31$1.48$2.5219,200——
2020-01-30$1.61$2.745,000——
2020-01-29$1.56$2.666,400——
2020-01-28$1.54$2.625,200——
2020-01-27$1.51$2.573,800——
2020-01-24$1.51$2.576,700——
2020-01-23$1.52$2.59500——
2020-01-22$1.51$2.575,500——
2020-01-21$1.54$2.626,400——
2020-01-17$1.55$2.642,400——
2020-01-16$1.57$2.685,100——
2020-01-15$1.58$2.6915,700——
2020-01-14$1.53$2.613,200——
2020-01-13$1.58$2.69500——
2020-01-10$1.53$2.615,400——
2020-01-09$1.51$2.571,700——
2020-01-08$1.57$2.683,000——
2020-01-07$1.57$2.6813,900——
2020-01-06$1.53$2.61122,100——
2020-01-03$1.51$2.574,900——
2020-01-02$1.51$2.574,900——