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 — 2003

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2003-12-31$10.32$11.111,200
2003-12-30$10.35$11.141,400
2003-12-29$10.35$11.142,400
2003-12-26$10.00$10.700
2003-12-24$10.00$10.703,000
2003-12-23$10.13$10.834,800
2003-12-22$10.05$10.752,000
2003-12-19$9.60$10.274,600
2003-12-18$9.43$10.094,200
2003-12-17$9.43$10.084,000
2003-12-16$9.13$9.765,400
2003-12-15$9.17$9.800
2003-12-12$9.17$9.801,000
2003-12-11$9.25$9.905,000
2003-12-10$9.43$10.09800
2003-12-09$9.44$10.107,400
2003-12-08$9.43$10.082,800
2003-12-05$9.50$10.160
2003-12-04$9.50$10.16400
2003-12-03$9.08$9.71600
2003-12-02$9.13$9.761,800
2003-12-01$9.13$9.761,400
2003-11-28$9.15$9.79400
2003-11-26$9.15$9.791,200
2003-11-25$9.26$9.90800
2003-11-24$9.55$10.223,800
2003-11-21$8.90$9.522,800
2003-11-20$9.60$10.270
2003-11-19$9.60$10.279,400
2003-11-18$9.05$9.684,800
2003-11-17$8.83$9.44600
2003-11-14$8.77$9.383,600
2003-11-13$9.10$9.737,800
2003-11-12$9.02$9.650
2003-11-11$9.02$9.651,800
2003-11-10$9.06$9.695,400
2003-11-07$9.00$9.636,000
2003-11-06$9.20$9.844,600
2003-11-05$8.75$9.362,200
2003-11-04$9.11$9.7419,400
2003-11-03$8.79$9.403,600
2003-10-31$8.50$9.091,200
2003-10-30$8.50$9.092,000
2003-10-29$8.65$9.250
2003-10-28$8.65$9.250
2003-10-27$8.65$9.252,600
2003-10-24$8.68$9.291,000
2003-10-23$8.57$9.17200
2003-10-22$8.48$9.070
2003-10-21$8.48$9.072,800
2003-10-20$8.20$8.772,000
2003-10-17$8.35$8.930
2003-10-16$8.35$8.93400
2003-10-15$8.45$9.04400
2003-10-14$8.13$8.690
2003-10-13$8.13$8.692,800
2003-10-10$8.70$9.310
2003-10-09$8.70$9.310
2003-10-08$8.70$9.314,200
2003-10-07$8.70$9.31600
2003-10-06$8.70$9.310
2003-10-03$8.70$9.31800
2003-10-02$8.70$9.31200
2003-10-01$8.70$9.314,000
2003-09-30$8.88$9.420
2003-09-29$8.88$9.420
2003-09-26$8.88$9.42400
2003-09-25$8.75$9.291,400
2003-09-24$9.13$9.691,000
2003-09-23$9.27$9.840
2003-09-22$9.27$9.840
2003-09-19$9.27$9.840
2003-09-18$9.27$9.844,600
2003-09-17$9.40$9.98600
2003-09-16$9.42$10.003,800
2003-09-15$9.42$10.001,000
2003-09-12$9.50$10.080
2003-09-11$9.50$10.08200
2003-09-10$9.59$10.180
2003-09-09$9.59$10.182,200
2003-09-08$9.33$9.901,200
2003-09-05$9.27$9.841,200
2003-09-04$9.49$10.075,600
2003-09-03$9.26$9.835,600
2003-09-02$9.37$9.959,800
2003-08-29$9.34$9.910
2003-08-28$9.34$9.911,400
2003-08-27$9.27$9.840
2003-08-26$9.27$9.84400
2003-08-25$9.28$9.85600
2003-08-22$9.63$10.220
2003-08-21$9.63$10.222,000
2003-08-20$9.27$9.840
2003-08-19$9.27$9.841,200
2003-08-18$9.50$10.08200
2003-08-15$9.25$9.820
2003-08-14$9.25$9.82400
2003-08-13$9.36$9.94800
2003-08-12$9.50$10.091,200
2003-08-11$9.47$10.06800
2003-08-08$9.49$10.08600
2003-08-07$9.03$9.592,000
2003-08-06$9.97$10.58400
2003-08-05$9.25$9.820
2003-08-04$9.25$9.821,400
2003-08-01$9.50$10.092,000
2003-07-31$9.93$10.541,000
2003-07-30$9.76$10.3611,600
2003-07-29$10.00$10.623,600
2003-07-28$9.88$10.494,800
2003-07-25$9.75$10.35400
2003-07-24$9.46$10.05200
2003-07-23$9.46$10.051,000
2003-07-22$9.50$10.090
2003-07-21$9.50$10.090
2003-07-18$9.50$10.090
2003-07-17$9.50$10.090
2003-07-16$9.50$10.09200
2003-07-15$9.66$10.18200
2003-07-14$9.37$9.881,800
2003-07-11$9.33$9.84800
2003-07-10$9.40$9.910
2003-07-09$9.40$9.911,200
2003-07-08$9.37$9.880
2003-07-07$9.37$9.882,400
2003-07-03$9.35$9.86400
2003-07-02$9.25$9.762,000
2003-07-01$9.50$10.027,000
2003-06-30$9.20$9.701,600
2003-06-27$9.16$9.66200
2003-06-26$9.23$9.734,400
2003-06-25$9.38$9.890
2003-06-24$9.38$9.891,000
2003-06-23$9.25$9.764,000
2003-06-20$8.75$9.231,600
2003-06-19$8.63$9.100
2003-06-18$8.63$9.10400
2003-06-17$8.88$9.363,600
2003-06-16$8.75$9.234,000
2003-06-13$8.25$8.700
2003-06-12$8.25$8.700
2003-06-11$8.25$8.700
2003-06-10$8.25$8.701,400
2003-06-09$8.40$8.862,600
2003-06-06$8.08$8.521,600
2003-06-05$8.39$8.851,400
2003-06-04$8.40$8.861,600
2003-06-03$8.50$8.961,200
2003-06-02$7.85$8.283,000
2003-05-30$7.72$8.140
2003-05-29$7.72$8.148,400
2003-05-28$8.10$8.540
2003-05-27$8.10$8.541,200
2003-05-23$7.50$7.917,000
2003-05-22$8.00$8.440
2003-05-21$8.00$8.441,000
2003-05-20$7.68$8.102,200
2003-05-19$7.88$8.31800
2003-05-16$7.93$8.36400
2003-05-15$7.90$8.330
2003-05-14$7.90$8.335,000
2003-05-13$8.25$8.704,000
2003-05-12$8.75$9.22400
2003-05-09$8.75$9.23200
2003-05-08$8.30$8.750
2003-05-07$8.30$8.750
2003-05-06$8.30$8.750
2003-05-05$8.30$8.751,200
2003-05-02$8.39$8.843,600
2003-05-01$7.89$8.321,400
2003-04-30$7.99$8.43600
2003-04-29$7.86$8.2992,000
2003-04-28$8.05$8.497,200
2003-04-25$7.91$8.34200
2003-04-24$7.91$8.346,800
2003-04-23$7.65$8.0715,600
2003-04-22$8.51$8.98600
2003-04-21$8.58$9.04800
2003-04-17$8.70$9.170
2003-04-16$8.70$9.170
2003-04-15$8.70$9.1715,000
2003-04-14$9.00$9.494,600
2003-04-11$9.01$9.50400
2003-04-10$9.25$9.762,000
2003-04-09$9.13$9.622,400
2003-04-08$9.01$9.506,000
2003-04-07$9.50$10.021,200
2003-04-04$9.58$10.031,000
2003-04-03$9.75$10.2116,200
2003-04-02$8.75$9.160
2003-04-01$8.75$9.160
2003-03-31$8.75$9.16200
2003-03-28$8.99$9.412,000
2003-03-27$8.88$9.301,400
2003-03-26$9.07$9.500
2003-03-25$9.07$9.500
2003-03-24$9.07$9.50400
2003-03-21$9.13$9.562,600
2003-03-20$9.18$9.61400
2003-03-19$9.29$9.73800
2003-03-18$9.17$9.611,600
2003-03-17$9.39$9.831,600
2003-03-14$8.90$9.321,400
2003-03-13$8.88$9.3020,000
2003-03-12$8.90$9.326,000
2003-03-11$9.10$9.53200
2003-03-10$9.01$9.446,200
2003-03-07$9.04$9.460
2003-03-06$9.04$9.4628,800
2003-03-05$9.45$9.892,400
2003-03-04$9.43$9.883,600
2003-03-03$9.47$9.922,800
2003-02-28$9.50$9.95200
2003-02-27$9.50$9.9510,200
2003-02-26$9.70$10.163,400
2003-02-25$9.51$9.961,000
2003-02-24$10.00$10.477,200
2003-02-21$9.33$9.771,000
2003-02-20$9.30$9.7415,400
2003-02-19$9.37$9.827,800
2003-02-18$9.02$9.452,000
2003-02-14$9.02$9.453,400
2003-02-13$9.03$9.452,000
2003-02-12$9.41$9.851,400
2003-02-11$9.52$9.97400
2003-02-10$9.62$10.084,800
2003-02-07$9.38$9.83600
2003-02-06$9.63$10.080
2003-02-05$9.63$10.080
2003-02-04$9.63$10.081,400
2003-02-03$9.30$9.74600
2003-01-31$9.30$9.740
2003-01-30$9.30$9.741,600
2003-01-29$9.20$9.631,800
2003-01-28$9.35$9.791,000
2003-01-27$9.53$9.984,200
2003-01-24$9.83$10.3016,600
2003-01-23$9.79$10.2616,000
2003-01-22$9.99$10.466,400
2003-01-21$10.68$11.194,000
2003-01-17$10.12$10.600
2003-01-16$10.12$10.602,600
2003-01-15$9.66$10.122,000
2003-01-14$9.93$10.402,000
2003-01-13$10.00$10.487,000
2003-01-10$10.43$10.926,200
2003-01-09$9.63$10.086,000
2003-01-08$9.44$9.895,800
2003-01-07$9.40$9.852,800
2003-01-06$9.38$9.8214,200
2003-01-03$9.30$9.74600
2003-01-02$9.26$9.701,400