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.

View year

Historical Stock Price — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2015-12-31$2.00$3.416,500
2015-12-30$2.05$3.491,400
2015-12-29$2.05$3.494,100
2015-12-28$2.13$3.6310,500
2015-12-24$1.99$3.39700
2015-12-23$1.97$3.3611,300
2015-12-22$1.98$3.373,300
2015-12-21$1.97$3.3612,600
2015-12-18$1.91$3.262,400
2015-12-17$1.94$3.313,200
2015-12-16$1.94$3.312,200
2015-12-15$1.99$3.393,400
2015-12-14$1.98$3.375,300
2015-12-11$1.98$3.3710,000
2015-12-10$1.91$3.2610,600
2015-12-09$1.93$3.299,100
2015-12-08$1.92$3.271,000
2015-12-07$1.98$3.377,700
2015-12-04$2.02$3.441,600
2015-12-03$2.03$3.461,700
2015-12-02$2.02$3.443,500
2015-12-01$2.09$3.567,400
2015-11-30$2.10$3.5811,300
2015-11-27$2.05$3.4910,700
2015-11-25$2.09$3.563,600
2015-11-24$2.03$3.462,100
2015-11-23$2.17$3.70300
2015-11-20$2.10$3.583,500
2015-11-19$2.09$3.565,900
2015-11-18$2.04$3.4814,300
2015-11-17$2.16$3.6810,800
2015-11-16$2.12$3.613,900
2015-11-13$2.10$3.5826,200
2015-11-12$2.10$3.58800
2015-11-11$2.08$3.54500
2015-11-10$2.16$3.681,300
2015-11-09$2.18$3.726,500
2015-11-06$2.07$3.5320,400
2015-11-05$2.33$3.9710,900
2015-11-04$2.34$3.99500
2015-11-03$2.35$4.00500
2015-11-02$2.31$3.9410,600
2015-10-30$2.53$4.319,200
2015-10-29$2.38$4.069,000
2015-10-28$2.59$4.4117,600
2015-10-27$2.64$4.5010,800
2015-10-26$2.59$4.4127,700
2015-10-23$2.44$4.16251,600
2015-10-22$2.08$3.5410,000
2015-10-21$2.03$3.463,500
2015-10-20$2.05$3.49800
2015-10-19$2.05$3.491,300
2015-10-16$2.06$3.5116,300
2015-10-15$2.07$3.533,900
2015-10-14$2.19$3.733,900
2015-10-13$2.30$3.920
2015-10-12$2.30$3.92300
2015-10-09$2.20$3.75300
2015-10-08$2.17$3.704,200
2015-10-07$2.24$3.82900
2015-10-06$2.18$3.722,000
2015-10-05$2.10$3.583,000
2015-10-02$2.05$3.494,900
2015-10-01$2.15$3.665,700
2015-09-30$2.21$3.770
2015-09-29$2.21$3.770
2015-09-28$2.21$3.776,600
2015-09-25$2.38$4.06600
2015-09-24$2.32$3.95300
2015-09-23$2.31$3.94600
2015-09-22$2.22$3.782,100
2015-09-21$2.47$4.2117,100
2015-09-18$2.19$3.7310,100
2015-09-17$2.45$4.183,700
2015-09-16$2.42$4.123,400
2015-09-15$2.50$4.26700
2015-09-14$2.36$4.02100
2015-09-11$2.35$4.002,700
2015-09-10$2.48$4.23400
2015-09-09$2.38$4.06600
2015-09-08$2.47$4.217,500
2015-09-04$2.42$4.121,400
2015-09-03$2.44$4.165,900
2015-09-02$2.52$4.2912,500
2015-09-01$2.33$3.974,700
2015-08-31$2.40$4.095,400
2015-08-28$2.30$3.921,800
2015-08-27$2.41$4.116,400
2015-08-26$2.34$3.9912,400
2015-08-25$2.30$3.92700
2015-08-24$2.50$4.2636,100
2015-08-21$2.50$4.263,500
2015-08-20$2.47$4.212,900
2015-08-19$2.51$4.284,700
2015-08-18$2.50$4.263,700
2015-08-17$2.47$4.218,200
2015-08-14$2.58$4.4010,900
2015-08-13$2.59$4.41600
2015-08-12$2.50$4.260
2015-08-11$2.50$4.264,400
2015-08-10$2.58$4.404,200
2015-08-07$2.48$4.231,400
2015-08-06$2.48$4.232,400
2015-08-05$2.45$4.1810,400
2015-08-04$2.47$4.211,400
2015-08-03$2.55$4.355,600
2015-07-31$2.52$4.29700
2015-07-30$2.51$4.28800
2015-07-29$2.57$4.384,200
2015-07-28$2.41$4.112,900
2015-07-27$2.32$3.952,200
2015-07-24$2.41$4.111,600
2015-07-23$2.40$4.09500
2015-07-22$2.42$4.123,800
2015-07-21$2.40$4.095,900
2015-07-20$2.55$4.354,900
2015-07-17$2.54$4.33900
2015-07-16$2.50$4.2622,900
2015-07-15$2.45$4.182,100
2015-07-14$2.46$4.194,000
2015-07-13$2.51$4.2831,800
2015-07-10$2.35$4.002,900
2015-07-09$2.32$3.953,500
2015-07-08$2.35$4.001,400
2015-07-07$2.34$3.995,600
2015-07-06$2.34$3.993,200
2015-07-02$2.37$4.046,700
2015-07-01$2.36$4.0242,900
2015-06-30$2.31$3.943,000
2015-06-29$2.38$4.061,900
2015-06-26$2.34$3.991,300
2015-06-25$2.37$4.044,600
2015-06-24$2.36$4.021,200
2015-06-23$2.34$3.993,000
2015-06-22$2.37$4.041,400
2015-06-19$2.42$4.126,200
2015-06-18$2.44$4.1618,200
2015-06-17$2.61$4.458,000
2015-06-16$2.55$4.353,500
2015-06-15$2.52$4.292,000
2015-06-12$2.65$4.522,600
2015-06-11$2.63$4.48900
2015-06-10$2.65$4.521,600
2015-06-09$2.67$4.55700
2015-06-08$2.71$4.62700
2015-06-05$2.69$4.584,500
2015-06-04$2.65$4.526,000
2015-06-03$2.55$4.355,600
2015-06-02$2.61$4.454,500
2015-06-01$2.63$4.4817,400
2015-05-29$2.75$4.697,200
2015-05-28$2.81$4.7917,900
2015-05-27$2.94$5.015,600
2015-05-26$2.94$5.011,600
2015-05-22$2.89$4.937,600
2015-05-21$2.80$4.7712,500
2015-05-20$2.88$4.9115,600
2015-05-19$2.90$4.9419,100
2015-05-18$2.80$4.77900
2015-05-15$2.79$4.755,900
2015-05-14$2.73$4.6514,400
2015-05-13$2.69$4.5820,900
2015-05-12$2.73$4.65100,700
2015-05-11$3.00$5.11586,500
2015-05-08$2.30$3.9230,700
2015-05-07$2.38$4.0641,300
2015-05-06$2.24$3.8215,500
2015-05-05$2.34$3.995,900
2015-05-04$2.34$3.993,500
2015-05-01$2.33$3.9739,900
2015-04-30$2.26$3.8511,600
2015-04-29$2.31$3.947,500
2015-04-28$2.32$3.955,000
2015-04-27$2.44$4.1653,900
2015-04-24$2.48$4.2376,500
2015-04-23$2.49$4.2415,200
2015-04-22$2.36$4.0215,300
2015-04-21$2.40$4.091,200
2015-04-20$2.44$4.1610,400
2015-04-17$2.28$3.8912,500
2015-04-16$2.22$3.7817,800
2015-04-15$2.28$3.8924,100
2015-04-14$2.32$3.951,800
2015-04-13$2.37$4.043,100
2015-04-10$2.35$4.007,300
2015-04-09$2.39$4.071,400
2015-04-08$2.33$3.974,400
2015-04-07$2.45$4.180
2015-04-06$2.45$4.182,700
2015-04-02$2.40$4.092,300
2015-04-01$2.40$4.091,200
2015-03-31$2.26$3.851,600
2015-03-30$2.44$4.163,800
2015-03-27$2.43$4.14400
2015-03-26$2.37$4.045,800
2015-03-25$2.33$3.971,300
2015-03-24$2.40$4.091,800
2015-03-23$2.48$4.237,700
2015-03-20$2.48$4.237,600
2015-03-19$2.49$4.241,900
2015-03-18$2.49$4.246,400
2015-03-17$2.38$4.0616,300
2015-03-16$2.45$4.1829,700
2015-03-13$2.44$4.164,400
2015-03-12$2.42$4.129,600
2015-03-11$2.41$4.1125,700
2015-03-10$2.65$4.523,200
2015-03-09$2.77$4.7237,800
2015-03-06$2.72$4.6419,100
2015-03-05$2.72$4.6427,600
2015-03-04$2.62$4.4755,800
2015-03-03$2.77$4.7295,600
2015-03-02$2.45$4.1883,600
2015-02-27$2.15$3.668,700
2015-02-26$2.01$3.4338,000
2015-02-25$1.96$3.34162,600
2015-02-24$1.87$3.196,800
2015-02-23$1.93$3.290
2015-02-20$1.93$3.297,300
2015-02-19$1.99$3.395,900
2015-02-18$1.89$3.226,900
2015-02-17$1.90$3.245,600
2015-02-13$2.01$3.432,700
2015-02-12$2.00$3.413,600
2015-02-11$2.12$3.6113,200
2015-02-10$2.08$3.541,000
2015-02-09$1.94$3.3112,600
2015-02-06$1.94$3.3116,300
2015-02-05$1.98$3.376,000
2015-02-04$1.97$3.362,800
2015-02-03$1.98$3.377,400
2015-02-02$1.87$3.197,800
2015-01-30$2.02$3.4491,200
2015-01-29$1.90$3.247,400
2015-01-28$1.93$3.295,100
2015-01-27$1.98$3.375,800
2015-01-26$1.88$3.2056,500
2015-01-23$1.97$3.36300
2015-01-22$2.00$3.414,900
2015-01-21$1.95$3.321,300
2015-01-20$2.13$3.634,300
2015-01-16$2.09$3.563,200
2015-01-15$2.06$3.510
2015-01-14$2.06$3.513,200
2015-01-13$2.10$3.5813,400
2015-01-12$2.16$3.6826,600
2015-01-09$1.91$3.263,200
2015-01-08$1.95$3.322,200
2015-01-07$1.92$3.273,500
2015-01-06$1.91$3.263,100
2015-01-05$1.98$3.377,500
2015-01-02$1.81$3.0855,600