NASDAQ:KOSS | Stock Price History | 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.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-03$3.48202
2026-09-02$3.49814
2026-09-01$3.48131
2026-08-31$3.58410
2026-08-28$3.55296
2026-08-27$3.42$5.8331,200$3.3841
2026-08-26$3.44$5.8616,300$3.4628
2026-08-25$3.45$5.8817,200$3.46114
2026-08-24$3.50$5.9614,900$3.552
2026-08-21$3.57$6.0816,100$3.59101
2026-08-20$3.44$5.8617,800$3.6182
2026-08-19$3.56$6.079,800
2026-08-18$3.58$6.1022,100$3.712,137
2026-08-17$3.70$6.318,600$3.78435
2026-08-14$3.75$6.3919,200$3.71325
2026-08-13$3.67$6.2513,300$3.69113
2026-08-12$3.65$6.225,700
2026-08-11$3.74$6.3711,100
2026-08-10$3.78$6.446,800$3.78684
2026-08-07$3.72$6.347,500$3.756
2026-08-06$3.73$6.367,300$3.6826
2026-08-05$3.73$6.3615,800$3.7345
2026-08-04$3.70$6.3116,900
2026-08-03$3.73$6.3647,300$3.703,370
2026-07-31$3.68$6.2712,600$3.813
2026-07-30$3.68$6.2712,200$3.732
2026-07-29$3.63$6.1920,100$3.71105
2026-07-28$3.72$6.3415,500$3.7336
2026-07-27$3.66$6.2413,900$3.7069
2026-07-24$3.75$6.3918,700$3.77200
2026-07-23$3.76$6.4112,800
2026-07-22$3.86$6.5814,100$3.7877
2026-07-21$3.80$6.4818,900$3.808
2026-07-20$3.76$6.4113,000$3.81308
2026-07-17$3.80$6.4823,500
2026-07-16$3.86$6.5819,600
2026-07-15$3.97$6.7712,600
2026-07-14$3.79$6.4646,900
2026-07-13$3.90$6.655,100
2026-07-10$3.95$6.7318,200
2026-07-09$3.87$6.6017,600
2026-07-08$3.82$6.5120,600
2026-07-07$3.92$6.6823,600
2026-07-06$4.09$6.9746,400
2026-07-02$3.97$6.774,600
2026-07-01$3.90$6.6525,000
2026-06-30$4.01$6.8312,400
2026-06-29$3.99$6.806,000
2026-06-26$3.99$6.8024,600
2026-06-25$3.95$6.7326,900
2026-06-24$4.01$6.8316,600
2026-06-23$3.98$6.7817,000
2026-06-22$3.93$6.7018,900
2026-06-18$4.03$6.8745,500
2026-06-17$3.95$6.7323,900
2026-06-16$3.98$6.7820,700
2026-06-15$3.80$6.4835,200
2026-06-12$3.91$6.6616,100
2026-06-11$4.01$6.8319,700
2026-06-10$3.91$6.6641,400
2026-06-09$3.98$6.7824,600
2026-06-08$4.09$6.9723,000
2026-06-05$3.98$6.7819,700
2026-06-04$4.07$6.9415,400
2026-06-03$4.04$6.8915,900
2026-06-02$4.07$6.9427,300
2026-06-01$4.23$7.2138,200
2026-05-29$4.08$6.9514,200
2026-05-28$4.08$6.9512,800
2026-05-27$4.02$6.8520,000
2026-05-26$4.19$7.1448,700
2026-05-22$3.97$6.7735,600
2026-05-21$4.12$7.0217,700
2026-05-20$4.00$6.8218,400
2026-05-19$3.93$6.7012,000
2026-05-18$3.96$6.7514,200
2026-05-15$3.86$6.5826,800
2026-05-14$3.87$6.6013,600
2026-05-13$3.80$6.4823,000
2026-05-12$3.94$6.7135,200
2026-05-11$3.90$6.6581,700
2026-05-08$4.16$7.0921,300
2026-05-07$4.18$7.1212,200
2026-05-06$4.30$7.3313,800
2026-05-05$4.41$7.5229,700
2026-05-04$4.22$7.1933,100
2026-05-01$4.36$7.4318,000
2026-04-30$4.33$7.3810,400
2026-04-29$4.18$7.1222,600
2026-04-28$4.30$7.338,100
2026-04-27$4.35$7.4112,200
2026-04-24$4.42$7.5328,600
2026-04-23$4.48$7.6474,700
2026-04-22$4.33$7.3867,800
2026-04-21$4.23$7.2199,200
2026-04-20$4.13$7.0434,500
2026-04-17$4.17$7.1136,600
2026-04-16$4.10$6.9953,200
2026-04-15$4.02$6.8527,500
2026-04-14$3.92$6.689,900