NASDAQ:BKYI | Historical Stock Price | BIO KEY INTERNATIONAL INC

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
1997-02-21 to 2026-09-02
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$2.81$31.19$345.85$3,835.57$42,537.13$471,744.001997-02-212026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$1,080.00$1,080.0051
2018-12-28$1,252.80$1,252.802
2018-12-27$1,195.20$1,195.2019
2018-12-26$1,353.60$1,353.6022
2018-12-24$1,584.00$1,584.0013
2018-12-21$1,728.00$1,728.0027
2018-12-20$1,843.20$1,843.207
2018-12-19$1,670.40$1,670.4023
2018-12-18$1,771.20$1,771.2014
2018-12-17$1,857.60$1,857.603
2018-12-14$1,771.20$1,771.208
2018-12-13$1,843.20$1,843.209
2018-12-12$1,828.80$1,828.807
2018-12-11$1,843.20$1,843.207
2018-12-10$1,872.00$1,872.001
2018-12-07$1,915.20$1,915.200
2018-12-06$1,900.80$1,900.801
2018-12-04$1,915.20$1,915.203
2018-12-03$1,929.60$1,929.6013
2018-11-30$1,915.20$1,915.2019
2018-11-29$1,886.40$1,886.4012
2018-11-28$1,742.40$1,742.4019
2018-11-27$1,828.80$1,828.801
2018-11-26$1,843.20$1,843.2017
2018-11-23$1,814.40$1,814.401
2018-11-21$1,828.80$1,828.806
2018-11-20$1,713.60$1,713.607
2018-11-19$1,699.20$1,699.208
2018-11-16$1,641.60$1,641.6015
2018-11-15$1,728.00$1,728.0061
2018-11-14$1,627.20$1,627.2015
2018-11-13$1,555.20$1,555.2011
2018-11-12$1,584.00$1,584.0023
2018-11-09$1,886.40$1,886.4016
2018-11-08$1,800.00$1,800.0015
2018-11-07$1,828.80$1,828.804
2018-11-06$1,828.80$1,828.8031
2018-11-05$1,641.60$1,641.6016
2018-11-02$1,584.00$1,584.0020
2018-11-01$1,555.20$1,555.208
2018-10-31$1,526.40$1,526.409
2018-10-30$1,497.60$1,497.6013
2018-10-29$1,468.80$1,468.8027
2018-10-26$1,656.00$1,656.0015
2018-10-25$1,670.40$1,670.4015
2018-10-24$1,512.00$1,512.0011
2018-10-23$1,641.60$1,641.6019
2018-10-22$1,771.20$1,771.2021
2018-10-19$1,785.60$1,785.6053
2018-10-18$1,915.20$1,915.203
2018-10-17$1,987.20$1,987.202
2018-10-16$1,958.40$1,958.403
2018-10-15$1,944.00$1,944.002
2018-10-12$1,987.20$1,987.203
2018-10-11$2,001.60$2,001.6012
2018-10-10$1,958.40$1,958.402
2018-10-09$2,088.00$2,088.006
2018-10-08$2,131.20$2,131.201
2018-10-05$2,275.20$2,275.2011
2018-10-04$2,145.60$2,145.606
2018-10-03$2,116.80$2,116.807
2018-10-02$2,059.20$2,059.206
2018-10-01$2,001.60$2,001.6010
2018-09-28$2,001.60$2,001.603
2018-09-27$1,944.00$1,944.005
2018-09-26$1,929.60$1,929.6027
2018-09-25$2,016.00$2,016.00193
2018-09-24$1,814.40$1,814.4038
2018-09-21$2,102.40$2,102.4033
2018-09-20$2,131.20$2,131.205
2018-09-19$2,131.20$2,131.208
2018-09-18$2,232.00$2,232.003
2018-09-17$2,232.00$2,232.004
2018-09-14$2,232.00$2,232.0014
2018-09-13$2,361.60$2,361.601
2018-09-12$2,361.60$2,361.607
2018-09-11$2,361.60$2,361.602
2018-09-10$2,376.00$2,376.0017
2018-09-07$2,448.00$2,448.003
2018-09-06$2,448.00$2,448.0017
2018-09-05$2,505.60$2,505.605
2018-09-04$2,462.40$2,462.403
2018-08-31$2,476.80$2,476.806
2018-08-30$2,376.00$2,376.005
2018-08-29$2,332.80$2,332.8012
2018-08-28$2,520.00$2,520.0010
2018-08-27$2,318.40$2,318.4010
2018-08-24$2,448.00$2,448.009
2018-08-23$2,592.00$2,592.008
2018-08-22$2,649.60$2,649.6043
2018-08-21$3,009.60$3,009.6010
2018-08-20$2,692.80$2,692.801
2018-08-17$2,577.60$2,577.603
2018-08-16$2,606.40$2,606.4010
2018-08-15$2,577.60$2,577.606
2018-08-14$2,462.40$2,462.409
2018-08-13$2,635.20$2,635.204
2018-08-10$2,678.40$2,678.4012
2018-08-09$2,635.20$2,635.2039
2018-08-08$2,894.40$2,894.404
2018-08-07$2,894.40$2,894.406
2018-08-06$2,880.00$2,880.0019
2018-08-03$2,966.40$2,966.403
2018-08-02$3,096.00$3,096.0027
2018-08-01$2,851.20$2,851.2033
2018-07-31$3,038.40$3,038.4013
2018-07-30$3,038.40$3,038.4018
2018-07-27$3,081.60$3,081.6024
2018-07-26$3,124.80$3,124.8011
2018-07-25$3,240.00$3,240.0019
2018-07-24$3,240.00$3,240.0012
2018-07-23$3,254.40$3,254.4012
2018-07-20$3,326.40$3,326.4041
2018-07-19$3,240.00$3,240.008
2018-07-18$3,254.40$3,254.4013
2018-07-17$3,283.20$3,283.20240
2018-07-16$3,398.40$3,398.407
2018-07-13$3,384.00$3,384.0017
2018-07-12$3,499.20$3,499.2034
2018-07-11$3,528.00$3,528.0022
2018-07-10$3,470.40$3,470.4021
2018-07-09$3,657.60$3,657.6015
2018-07-06$3,672.00$3,672.0010
2018-07-05$3,729.60$3,729.6011
2018-07-03$3,816.00$3,816.0013
2018-07-02$3,628.80$3,628.8030
2018-06-29$3,816.00$3,816.0028
2018-06-28$3,600.00$3,600.0053
2018-06-27$3,484.80$3,484.8018
2018-06-26$3,312.00$3,312.0028
2018-06-25$3,470.40$3,470.4034
2018-06-22$3,772.80$3,772.8036
2018-06-21$3,816.00$3,816.0040
2018-06-20$3,484.80$3,484.8028
2018-06-19$3,643.20$3,643.20223
2018-06-18$3,412.80$3,412.807
2018-06-15$3,484.80$3,484.8022
2018-06-14$3,312.00$3,312.007
2018-06-13$3,441.60$3,441.6017
2018-06-12$3,427.20$3,427.2082
2018-06-11$3,182.40$3,182.4026
2018-06-08$3,340.80$3,340.8018
2018-06-07$3,225.60$3,225.6083
2018-06-06$3,441.60$3,441.6061
2018-06-05$3,484.80$3,484.80116
2018-06-04$3,758.40$3,758.401,639
2018-06-01$3,211.20$3,211.2016
2018-05-31$3,096.00$3,096.0012
2018-05-30$3,182.40$3,182.407
2018-05-29$3,211.20$3,211.201
2018-05-25$3,240.00$3,240.006
2018-05-24$3,225.60$3,225.605
2018-05-23$3,254.40$3,254.406
2018-05-22$3,326.40$3,326.406
2018-05-21$3,369.60$3,369.609
2018-05-18$3,297.60$3,297.6012
2018-05-17$3,110.40$3,110.4017
2018-05-16$2,980.80$2,980.8046
2018-05-15$3,355.20$3,355.205
2018-05-14$3,340.80$3,340.8026
2018-05-11$3,470.40$3,470.4013
2018-05-10$3,542.40$3,542.4011
2018-05-09$3,672.00$3,672.0015
2018-05-08$3,571.20$3,571.207
2018-05-07$3,556.80$3,556.8015
2018-05-04$3,614.40$3,614.4019
2018-05-03$3,326.40$3,326.4018
2018-05-02$3,254.40$3,254.4057
2018-05-01$3,139.20$3,139.2011
2018-04-30$3,038.40$3,038.403
2018-04-27$3,052.80$3,052.8028
2018-04-26$3,038.40$3,038.4011
2018-04-25$3,096.00$3,096.0020
2018-04-24$2,966.40$2,966.4022
2018-04-23$3,009.60$3,009.606
2018-04-20$3,024.00$3,024.009
2018-04-19$2,980.80$2,980.8018
2018-04-18$2,980.80$2,980.8018
2018-04-17$3,139.20$3,139.2016
2018-04-16$2,966.40$2,966.4024
2018-04-13$3,182.40$3,182.4012
2018-04-12$3,096.00$3,096.0014
2018-04-11$3,240.00$3,240.0010
2018-04-10$3,355.20$3,355.2021
2018-04-09$3,211.20$3,211.2038
2018-04-06$3,456.00$3,456.0055
2018-04-05$3,139.20$3,139.2032
2018-04-04$2,937.60$2,937.6018
2018-04-03$2,894.40$2,894.4017
2018-04-02$2,880.00$2,880.0058
2018-03-29$3,096.00$3,096.00135
2018-03-28$2,836.80$2,836.8028
2018-03-27$2,750.40$2,750.4010
2018-03-26$2,793.60$2,793.6010
2018-03-23$2,822.40$2,822.406
2018-03-22$2,836.80$2,836.8015
2018-03-21$2,851.20$2,851.205
2018-03-20$2,822.40$2,822.407
2018-03-19$2,923.20$2,923.2023
2018-03-16$2,880.00$2,880.006
2018-03-15$2,880.00$2,880.0018
2018-03-14$2,880.00$2,880.0033
2018-03-13$2,894.40$2,894.4034
2018-03-12$2,836.80$2,836.8018
2018-03-09$2,880.00$2,880.0015
2018-03-08$2,750.40$2,750.405
2018-03-07$2,721.60$2,721.6014
2018-03-06$2,865.60$2,865.606
2018-03-05$2,808.00$2,808.0011
2018-03-02$2,851.20$2,851.2016
2018-03-01$2,764.80$2,764.809
2018-02-28$2,635.20$2,635.2014
2018-02-27$2,836.80$2,836.8027
2018-02-26$3,081.60$3,081.6015
2018-02-23$3,096.00$3,096.0012
2018-02-22$3,052.80$3,052.8017
2018-02-21$3,067.20$3,067.2045
2018-02-20$3,110.40$3,110.4066
2018-02-16$2,937.60$2,937.6016
2018-02-15$3,024.00$3,024.0021
2018-02-14$2,880.00$2,880.006
2018-02-13$2,692.80$2,692.8012
2018-02-12$2,635.20$2,635.206
2018-02-09$2,736.00$2,736.0030
2018-02-08$2,678.40$2,678.4013
2018-02-07$2,764.80$2,764.806
2018-02-06$2,793.60$2,793.6012
2018-02-05$2,836.80$2,836.807
2018-02-02$2,865.60$2,865.603
2018-02-01$2,779.20$2,779.2014
2018-01-31$2,822.40$2,822.409
2018-01-30$2,750.40$2,750.408
2018-01-29$2,836.80$2,836.8010
2018-01-26$2,908.80$2,908.808
2018-01-25$2,865.60$2,865.6012
2018-01-24$2,793.60$2,793.605
2018-01-23$2,865.60$2,865.605
2018-01-22$2,880.00$2,880.004
2018-01-19$2,851.20$2,851.2010
2018-01-18$2,865.60$2,865.603
2018-01-17$2,822.40$2,822.4016
2018-01-16$2,995.20$2,995.2027
2018-01-12$3,024.00$3,024.0010
2018-01-11$3,024.00$3,024.0011
2018-01-10$3,081.60$3,081.6027
2018-01-09$3,052.80$3,052.807
2018-01-08$3,153.60$3,153.6029
2018-01-05$3,124.80$3,124.804
2018-01-04$3,081.60$3,081.6018
2018-01-03$3,139.20$3,139.2098
2018-01-02$2,707.20$2,707.2032