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 — 1986

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1986-12-31$1.13$1.12237,600
1986-12-30$1.09$1.0995,600
1986-12-29$1.06$1.0666,400
1986-12-26$1.13$1.1218,800
1986-12-24$1.06$1.060
1986-12-23$1.06$1.0620,400
1986-12-22$1.06$1.0668,000
1986-12-19$1.13$1.1245,200
1986-12-18$1.09$1.0939,600
1986-12-17$1.13$1.1214,000
1986-12-16$1.16$1.1620,400
1986-12-15$1.22$1.228,400
1986-12-12$1.25$1.2521,600
1986-12-11$1.22$1.22102,000
1986-12-10$1.13$1.1214,000
1986-12-09$1.09$1.096,800
1986-12-08$1.09$1.093,200
1986-12-05$1.13$1.1214,000
1986-12-04$1.22$1.224,400
1986-12-03$1.16$1.1610,000
1986-12-02$1.22$1.2222,400
1986-12-01$1.25$1.2522,800
1986-11-28$1.25$1.258,400
1986-11-26$1.19$1.1931,200
1986-11-25$1.19$1.198,800
1986-11-24$1.25$1.2547,200
1986-11-21$1.19$1.19164,800
1986-11-20$1.03$1.0327,200
1986-11-19$1.06$1.069,600
1986-11-18$1.13$1.12800
1986-11-17$1.09$1.096,800
1986-11-14$1.09$1.0915,600
1986-11-13$1.09$1.0920,800
1986-11-12$1.09$1.099,200
1986-11-11$1.09$1.099,200
1986-11-10$1.09$1.096,400
1986-11-07$1.09$1.0910,400
1986-11-06$1.09$1.0916,000
1986-11-05$1.09$1.0918,000
1986-11-04$1.09$1.0912,000
1986-11-03$1.13$1.1210,000
1986-10-31$1.13$1.125,200
1986-10-30$1.16$1.1642,400
1986-10-29$1.16$1.1618,400
1986-10-28$1.13$1.1285,200
1986-10-27$1.06$1.0667,200
1986-10-24$1.06$1.0676,400
1986-10-23$1.03$1.0335,200
1986-10-22$1.03$1.031,600
1986-10-21$1.03$1.0316,400
1986-10-20$1.06$1.0621,200
1986-10-17$1.06$1.0620,800
1986-10-16$1.06$1.0623,200
1986-10-15$1.06$1.0623,200
1986-10-14$1.09$1.0916,000
1986-10-13$1.09$1.090
1986-10-10$1.09$1.0925,200
1986-10-09$1.09$1.0934,400
1986-10-08$1.09$1.09114,400
1986-10-07$1.06$1.0612,800
1986-10-06$1.06$1.069,200
1986-10-03$1.06$1.066,400
1986-10-02$1.06$1.0626,400
1986-10-01$1.06$1.0644,800
1986-09-30$1.06$1.0679,600
1986-09-29$1.03$1.0346,000
1986-09-26$1.00$1.0038,000
1986-09-25$1.06$1.0644,800
1986-09-24$1.06$1.0679,200
1986-09-23$0.94$0.946,400
1986-09-22$0.94$0.944,800
1986-09-19$0.94$0.94122,000
1986-09-18$0.88$0.883,200
1986-09-17$0.88$0.8816,000
1986-09-16$0.88$0.887,600
1986-09-15$0.88$0.888,000
1986-09-12$0.88$0.886,000
1986-09-11$0.91$0.9116,800
1986-09-10$0.91$0.917,200
1986-09-09$0.91$0.9146,400
1986-09-08$0.94$0.9430,800
1986-09-05$0.97$0.9732,000
1986-09-04$1.00$1.0062,400
1986-09-03$1.03$1.0312,800
1986-09-02$1.03$1.0320,000
1986-08-29$1.06$1.0666,400
1986-08-28$1.06$1.0610,800
1986-08-27$1.09$1.0916,000
1986-08-26$1.03$1.0324,400
1986-08-25$1.00$1.0038,000
1986-08-22$0.97$0.9719,600
1986-08-21$0.94$0.94122,800
1986-08-20$0.94$0.9414,000
1986-08-19$0.97$0.9728,800
1986-08-18$0.97$0.9741,600
1986-08-15$0.78$0.7864,000
1986-08-14$0.78$0.784,000
1986-08-13$0.78$0.78800
1986-08-12$0.78$0.784,400
1986-08-11$0.78$0.7818,400
1986-08-08$0.78$0.7830,800
1986-08-07$0.78$0.7837,200
1986-08-06$0.75$0.7528,800
1986-08-05$0.75$0.7516,400
1986-08-04$0.72$0.7210,400
1986-08-01$0.75$0.758,400
1986-07-31$0.72$0.720
1986-07-30$0.72$0.7232,800
1986-07-29$0.75$0.7510,400
1986-07-28$0.75$0.7545,600
1986-07-25$0.75$0.7512,800
1986-07-24$0.75$0.7546,800
1986-07-23$0.69$0.6910,400
1986-07-22$0.69$0.6952,000
1986-07-21$0.63$0.621,600
1986-07-18$0.66$0.665,200
1986-07-17$0.66$0.666,800
1986-07-16$0.66$0.664,000
1986-07-15$0.66$0.6617,600
1986-07-14$0.66$0.660
1986-07-11$0.66$0.668,000
1986-07-10$0.69$0.694,000
1986-07-09$0.69$0.6914,000
1986-07-08$0.69$0.692,400
1986-07-07$0.69$0.6910,800
1986-07-03$0.72$0.726,800
1986-07-02$0.72$0.7213,200
1986-07-01$0.72$0.721,600
1986-06-30$0.72$0.722,000
1986-06-27$0.75$0.754,000
1986-06-26$0.72$0.7216,000
1986-06-25$0.72$0.726,000
1986-06-24$0.72$0.726,400
1986-06-23$0.72$0.7222,800
1986-06-20$0.75$0.7534,400
1986-06-19$0.72$0.7216,000
1986-06-18$0.66$0.664,000
1986-06-17$0.66$0.6645,200
1986-06-16$0.63$0.6297,200
1986-06-13$0.59$0.5920,000
1986-06-12$0.59$0.5910,400
1986-06-11$0.59$0.5936,000
1986-06-10$0.59$0.5928,000
1986-06-09$0.63$0.6220,400
1986-06-06$0.63$0.62800
1986-06-05$0.63$0.6229,200
1986-06-04$0.63$0.6215,200
1986-06-03$0.63$0.622,000
1986-06-02$0.63$0.626,400
1986-05-30$0.63$0.621,600
1986-05-29$0.63$0.628,800
1986-05-28$0.63$0.6216,800
1986-05-27$0.63$0.6216,800
1986-05-23$0.63$0.6214,000
1986-05-22$0.63$0.625,200
1986-05-21$0.63$0.626,000
1986-05-20$0.63$0.620
1986-05-19$0.63$0.6218,800
1986-05-16$0.66$0.662,800
1986-05-15$0.66$0.664,000
1986-05-14$0.66$0.6644,800
1986-05-13$0.63$0.6232,800
1986-05-12$0.63$0.6210,400
1986-05-09$0.63$0.622,000
1986-05-08$0.63$0.620
1986-05-07$0.63$0.621,600
1986-05-06$0.63$0.6215,600
1986-05-05$0.63$0.623,200
1986-05-02$0.59$0.590
1986-05-01$0.59$0.590
1986-04-30$0.59$0.5913,200
1986-04-29$0.59$0.596,000
1986-04-28$0.59$0.594,800
1986-04-25$0.59$0.591,600
1986-04-24$0.59$0.5911,200
1986-04-23$0.59$0.5921,600
1986-04-22$0.66$0.669,200
1986-04-21$0.66$0.66800
1986-04-18$0.66$0.664,800
1986-04-17$0.66$0.6626,400
1986-04-16$0.69$0.6925,200
1986-04-15$0.69$0.698,000
1986-04-14$0.69$0.690
1986-04-11$0.69$0.698,400
1986-04-10$0.66$0.6618,000
1986-04-09$0.66$0.665,200
1986-04-08$0.66$0.664,000
1986-04-07$0.63$0.624,000
1986-04-04$0.66$0.662,000
1986-04-03$0.66$0.6614,000
1986-04-02$0.66$0.6634,400
1986-04-01$0.63$0.6228,400
1986-03-31$0.72$0.7216,000
1986-03-27$0.75$0.75103,600
1986-03-26$0.72$0.7218,400
1986-03-25$0.28$0.280
1986-03-24$0.28$0.280
1986-03-21$0.28$0.280
1986-03-20$0.28$0.280
1986-03-19$0.28$0.280
1986-03-18$0.28$0.280
1986-03-17$0.28$0.280
1986-03-14$0.28$0.280
1986-03-13$0.28$0.280
1986-03-12$0.28$0.280
1986-03-11$0.28$0.280
1986-03-10$0.28$0.280
1986-03-07$0.28$0.280
1986-03-06$0.28$0.280
1986-03-05$0.28$0.280
1986-03-04$0.28$0.280
1986-03-03$0.28$0.280
1986-02-28$0.28$0.280
1986-02-27$0.28$0.280
1986-02-26$0.28$0.280
1986-02-25$0.28$0.280
1986-02-24$0.28$0.280
1986-02-21$0.28$0.280
1986-02-20$0.28$0.280
1986-02-19$0.28$0.280
1986-02-18$0.28$0.280
1986-02-14$0.28$0.280
1986-02-13$0.28$0.280
1986-02-12$0.28$0.280
1986-02-11$0.28$0.280
1986-02-10$0.28$0.280
1986-02-07$0.28$0.280
1986-02-06$0.28$0.280
1986-02-05$0.28$0.280
1986-02-04$0.28$0.280
1986-02-03$0.28$0.280
1986-01-31$0.28$0.280
1986-01-30$0.28$0.280
1986-01-29$0.28$0.280
1986-01-28$0.28$0.280
1986-01-27$0.28$0.280
1986-01-24$0.28$0.280
1986-01-23$0.28$0.280
1986-01-22$0.28$0.280
1986-01-21$0.28$0.280
1986-01-20$0.28$0.280
1986-01-17$0.28$0.280
1986-01-16$0.28$0.280
1986-01-15$0.28$0.280
1986-01-14$0.28$0.280
1986-01-13$0.28$0.280
1986-01-10$0.28$0.280
1986-01-09$0.28$0.280
1986-01-08$0.28$0.280
1986-01-07$0.28$0.280
1986-01-06$0.28$0.280
1986-01-03$0.28$0.280
1986-01-02$0.28$0.280