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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$10.68$18.20142,700
2021-12-30$11.20$19.09131,100
2021-12-29$11.08$18.8880,400
2021-12-28$11.57$19.72156,700
2021-12-27$12.05$20.5452,700
2021-12-23$12.33$21.0171,500
2021-12-22$12.29$20.9546,600
2021-12-21$12.61$21.4948,900
2021-12-20$12.33$21.0163,700
2021-12-17$12.93$22.04143,700
2021-12-16$12.15$20.7146,600
2021-12-15$12.54$21.3769,400
2021-12-14$12.37$21.0894,000
2021-12-13$12.51$21.3288,700
2021-12-10$13.12$22.3689,000
2021-12-09$12.78$21.7867,500
2021-12-08$13.60$23.18490,900
2021-12-07$13.36$22.77101,700
2021-12-06$12.99$22.14227,000
2021-12-03$12.38$21.10155,100
2021-12-02$13.35$22.75191,300
2021-12-01$13.23$22.55176,900
2021-11-30$14.03$23.91124,500
2021-11-29$14.03$23.9187,800
2021-11-26$14.45$24.63160,300
2021-11-24$14.62$24.9276,600
2021-11-23$14.50$24.71186,500
2021-11-22$15.14$25.80227,400
2021-11-19$14.99$25.55152,200
2021-11-18$14.86$25.33171,500
2021-11-17$15.39$26.23132,800
2021-11-16$15.51$26.43200,000
2021-11-15$15.95$27.18374,900
2021-11-12$15.94$27.17107,400
2021-11-11$16.00$27.27119,300
2021-11-10$15.86$27.03163,300
2021-11-09$16.07$27.39174,400
2021-11-08$16.36$27.88323,400
2021-11-05$16.23$27.66211,000
2021-11-04$16.30$27.78274,400
2021-11-03$16.45$28.031,127,700
2021-11-02$16.05$27.35593,500
2021-11-01$15.94$27.17618,600
2021-10-29$16.18$27.57210,700
2021-10-28$16.51$28.14416,700
2021-10-27$16.01$27.28163,100
2021-10-26$16.71$28.48217,400
2021-10-25$16.88$28.77162,100
2021-10-22$16.57$28.24241,300
2021-10-21$17.06$29.07152,100
2021-10-20$17.50$29.82131,000
2021-10-19$17.53$29.88298,200
2021-10-18$17.63$30.05307,500
2021-10-15$17.37$29.60534,800
2021-10-14$18.10$30.851,693,700
2021-10-13$18.65$31.7812,244,000
2021-10-12$19.18$32.692,790,100
2021-10-11$15.35$26.16144,400
2021-10-08$15.27$26.0282,500
2021-10-07$15.70$26.76138,400
2021-10-06$15.22$25.94197,000
2021-10-05$16.03$27.32112,900
2021-10-04$16.10$27.4473,300
2021-10-01$16.48$28.0979,800
2021-09-30$16.35$27.86373,000
2021-09-29$16.05$27.35121,700
2021-09-28$16.72$28.49120,800
2021-09-27$16.85$28.72181,000
2021-09-24$16.88$28.7789,400
2021-09-23$17.09$29.1386,200
2021-09-22$17.11$29.16115,800
2021-09-21$17.02$29.0183,600
2021-09-20$16.95$28.89216,800
2021-09-17$17.72$30.20188,800
2021-09-16$18.09$30.83150,000
2021-09-15$17.62$30.03230,100
2021-09-14$17.84$30.40194,600
2021-09-13$18.76$31.97280,100
2021-09-10$18.82$32.07182,200
2021-09-09$19.02$32.41173,300
2021-09-08$18.93$32.26180,500
2021-09-07$19.27$32.84315,200
2021-09-03$18.54$31.60115,300
2021-09-02$18.62$31.73136,400
2021-09-01$18.18$30.98293,300
2021-08-31$18.35$31.27341,400
2021-08-30$18.01$30.69305,300
2021-08-27$17.99$30.66285,500
2021-08-26$17.74$30.23716,200
2021-08-25$18.16$30.952,080,100
2021-08-24$19.40$33.064,005,100
2021-08-23$18.58$31.66142,100
2021-08-20$17.93$30.56304,000
2021-08-19$18.07$30.80243,400
2021-08-18$18.06$30.7895,800
2021-08-17$17.90$30.51117,500
2021-08-16$18.11$30.86198,400
2021-08-13$18.65$31.78663,800
2021-08-12$18.70$31.87141,400
2021-08-11$18.64$31.77173,300
2021-08-10$18.35$31.271,225,900
2021-08-09$17.20$29.31256,500
2021-08-06$16.99$28.96191,100
2021-08-05$17.50$29.82264,200
2021-08-04$16.75$28.551,077,300
2021-08-03$17.99$30.66118,600
2021-08-02$18.62$31.7373,900
2021-07-30$18.14$30.91106,000
2021-07-29$18.83$32.09173,500
2021-07-28$18.75$31.95122,600
2021-07-27$18.33$31.24125,100
2021-07-26$19.12$32.59158,300
2021-07-23$18.36$31.29148,700
2021-07-22$18.99$32.3676,700
2021-07-21$19.17$32.67153,900
2021-07-20$19.39$33.05321,600
2021-07-19$18.51$31.55249,000
2021-07-16$18.16$30.95240,100
2021-07-15$19.27$32.84152,500
2021-07-14$19.19$32.70152,500
2021-07-13$19.75$33.66108,600
2021-07-12$20.49$34.92179,300
2021-07-09$20.53$34.99150,300
2021-07-08$21.22$36.16359,300
2021-07-07$20.16$34.36265,900
2021-07-06$20.72$35.31246,800
2021-07-02$21.19$36.11268,200
2021-07-01$21.90$37.32632,100
2021-06-30$23.22$39.57452,500
2021-06-29$23.29$39.69471,200
2021-06-28$24.29$41.40906,100
2021-06-25$24.68$42.061,770,200
2021-06-24$23.49$40.03368,600
2021-06-23$24.78$42.23538,900
2021-06-22$24.00$40.90970,500
2021-06-21$22.75$38.77322,300
2021-06-18$22.82$38.89397,100
2021-06-17$23.90$40.73822,100
2021-06-16$23.20$39.54655,900
2021-06-15$24.41$41.60793,900
2021-06-14$25.28$43.081,412,300
2021-06-11$25.29$43.10884,000
2021-06-10$24.62$41.961,274,300
2021-06-09$26.32$44.862,951,500
2021-06-08$28.33$48.286,455,200
2021-06-07$27.60$47.046,778,900
2021-06-04$26.95$45.933,484,000
2021-06-03$30.83$52.5410,770,100
2021-06-02$40.72$69.4019,428,200
2021-06-01$24.15$41.163,929,700
2021-05-28$23.07$39.327,496,000
2021-05-27$22.82$38.896,530,600
2021-05-26$20.68$35.248,739,500
2021-05-25$20.78$35.415,385,600
2021-05-24$16.91$28.821,327,900
2021-05-21$17.15$29.23368,700
2021-05-20$17.34$29.55504,400
2021-05-19$17.21$29.33535,700
2021-05-18$18.24$31.091,779,400
2021-05-17$18.80$32.042,121,400
2021-05-14$18.55$31.611,368,800
2021-05-13$18.25$31.105,870,200
2021-05-12$16.32$27.81193,400
2021-05-11$16.77$28.58341,600
2021-05-10$16.10$27.44300,000
2021-05-07$17.22$29.35276,800
2021-05-06$16.69$28.44247,000
2021-05-05$17.06$29.07258,300
2021-05-04$17.96$30.61322,700
2021-05-03$18.60$31.70249,700
2021-04-30$18.70$31.87919,300
2021-04-29$19.28$32.86423,200
2021-04-28$19.50$33.23429,600
2021-04-27$19.79$33.73746,300
2021-04-26$20.24$34.491,825,700
2021-04-23$18.80$32.04261,500
2021-04-22$19.17$32.67439,200
2021-04-21$19.37$33.01500,000
2021-04-20$18.01$30.69275,500
2021-04-19$18.70$31.87510,900
2021-04-16$18.95$32.30397,600
2021-04-15$19.18$32.69529,700
2021-04-14$19.41$33.082,080,900
2021-04-13$19.40$33.06401,800
2021-04-12$19.09$32.53833,300
2021-04-09$20.29$34.58569,300
2021-04-08$21.52$36.68411,500
2021-04-07$21.44$36.54659,300
2021-04-06$22.68$38.65741,600
2021-04-05$23.06$39.301,526,000
2021-04-01$23.20$39.544,722,200
2021-03-31$22.49$38.331,907,700
2021-03-30$22.85$38.943,474,000
2021-03-29$21.20$36.133,391,800
2021-03-26$21.13$36.014,595,800
2021-03-25$25.80$43.9719,814,700
2021-03-24$16.42$27.981,392,800
2021-03-23$20.75$35.361,492,600
2021-03-22$23.80$40.56925,900
2021-03-19$25.50$43.461,633,900
2021-03-18$25.51$43.481,588,600
2021-03-17$27.44$46.763,196,600
2021-03-16$26.70$45.502,670,800
2021-03-15$28.90$49.255,008,300
2021-03-12$27.88$47.5116,085,300
2021-03-11$25.22$42.987,933,400
2021-03-10$30.28$51.6060,298,900
2021-03-09$17.90$30.515,707,800
2021-03-08$18.85$32.129,903,600
2021-03-05$14.78$25.191,900,400
2021-03-04$15.30$26.072,749,500
2021-03-03$16.92$28.841,755,200
2021-03-02$16.19$27.593,695,700
2021-03-01$18.95$32.308,323,500
2021-02-26$16.71$28.488,703,600
2021-02-25$21.53$36.6938,329,400
2021-02-24$18.44$31.4313,351,700
2021-02-23$11.90$20.28613,500
2021-02-22$13.31$22.681,520,400
2021-02-19$14.05$23.94946,100
2021-02-18$14.25$24.296,529,600
2021-02-17$13.39$22.82533,800
2021-02-16$14.50$24.711,893,500
2021-02-12$14.78$25.191,076,300
2021-02-11$15.92$27.13847,100
2021-02-10$17.01$28.992,409,700
2021-02-09$17.92$30.541,178,900
2021-02-08$19.00$32.382,055,000
2021-02-05$19.98$34.054,844,400
2021-02-04$18.80$32.042,913,400
2021-02-03$25.59$43.617,228,400
2021-02-02$20.00$34.086,671,000
2021-02-01$35.00$59.657,973,000
2021-01-29$64.00$109.0711,612,300
2021-01-28$41.96$71.5111,305,200
2021-01-27$58.00$98.8525,073,500
2021-01-26$10.00$17.0434,562,700
2021-01-25$6.00$10.238,512,100
2021-01-22$3.34$5.69121,800
2021-01-21$3.54$6.0397,500
2021-01-20$3.43$5.85567,700
2021-01-19$3.62$6.17713,500
2021-01-15$2.90$4.9482,600
2021-01-14$3.07$5.2326,200
2021-01-13$3.11$5.3028,300
2021-01-12$3.24$5.5240,300
2021-01-11$3.20$5.4539,500
2021-01-08$3.27$5.5762,300
2021-01-07$3.15$5.3784,600
2021-01-06$3.05$5.2034,600
2021-01-05$3.11$5.30116,600
2021-01-04$3.19$5.44245,100