NASDAQ:COST | Historical Stock Price | COSTCO WHOLESALE CORP /NEW

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
1986-07-09 to 2026-09-04
Data captured

Stock Price Chart

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

$5.73$17.80$55.28$171.70$533.32$1,656.561986-07-092026-08-27

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

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Historical Stock Price — 1988

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1988-12-30$9.38$9.37272,400
1988-12-29$9.63$9.62353,200
1988-12-28$9.50$9.50286,800
1988-12-27$9.56$9.56701,600
1988-12-23$9.63$9.62237,200
1988-12-22$9.72$9.721,215,200
1988-12-21$9.56$9.56984,800
1988-12-20$9.75$9.751,414,800
1988-12-19$10.00$10.00465,200
1988-12-16$10.06$10.06972,400
1988-12-15$10.03$10.031,519,200
1988-12-14$9.94$9.94304,000
1988-12-13$9.81$9.81587,600
1988-12-12$9.69$9.69635,200
1988-12-09$9.88$9.88974,000
1988-12-08$9.97$9.97510,800
1988-12-07$9.94$9.94764,800
1988-12-06$9.91$9.91380,800
1988-12-05$9.88$9.88359,200
1988-12-02$9.81$9.81536,800
1988-12-01$9.78$9.78399,600
1988-11-30$9.81$9.81382,000
1988-11-29$9.75$9.75568,000
1988-11-28$9.50$9.50368,400
1988-11-25$9.34$9.34136,000
1988-11-23$9.56$9.56431,200
1988-11-22$9.25$9.25502,400
1988-11-21$9.25$9.25726,000
1988-11-18$9.41$9.41442,000
1988-11-17$9.31$9.31275,600
1988-11-16$9.25$9.25774,400
1988-11-15$9.63$9.62258,000
1988-11-14$9.50$9.50672,800
1988-11-11$9.56$9.56391,200
1988-11-10$9.91$9.91322,800
1988-11-09$9.88$9.88353,600
1988-11-08$10.00$10.00243,200
1988-11-07$9.88$9.88297,200
1988-11-04$9.94$9.94674,400
1988-11-03$9.94$9.94787,200
1988-11-02$9.81$9.81547,200
1988-11-01$9.81$9.811,245,200
1988-10-31$10.00$10.00530,800
1988-10-28$10.13$10.12736,800
1988-10-27$10.06$10.06399,600
1988-10-26$10.19$10.19420,400
1988-10-25$10.06$10.06323,200
1988-10-24$10.31$10.31932,000
1988-10-21$10.44$10.44631,600
1988-10-20$10.38$10.371,706,400
1988-10-19$10.06$10.062,214,000
1988-10-18$10.00$10.00507,600
1988-10-17$10.03$10.031,332,000
1988-10-14$9.94$9.941,806,800
1988-10-13$9.81$9.81574,400
1988-10-12$9.63$9.621,670,400
1988-10-11$9.81$9.81552,400
1988-10-10$10.00$10.00404,000
1988-10-07$10.03$10.031,537,600
1988-10-06$9.88$9.881,264,000
1988-10-05$9.69$9.691,163,600
1988-10-04$9.59$9.59438,800
1988-10-03$9.56$9.56676,400
1988-09-30$9.69$9.691,102,800
1988-09-29$9.56$9.56356,000
1988-09-28$9.53$9.53470,400
1988-09-27$9.63$9.62372,800
1988-09-26$9.63$9.62237,600
1988-09-23$9.56$9.56360,000
1988-09-22$9.63$9.62643,600
1988-09-21$9.81$9.81997,600
1988-09-20$9.63$9.62646,000
1988-09-19$9.56$9.56306,000
1988-09-16$9.50$9.50859,200
1988-09-15$9.38$9.37673,200
1988-09-14$9.44$9.441,198,800
1988-09-13$9.50$9.50620,000
1988-09-12$9.50$9.50525,600
1988-09-09$9.69$9.691,598,000
1988-09-08$9.50$9.50708,400
1988-09-07$9.31$9.31612,000
1988-09-06$9.19$9.19126,800
1988-09-02$9.13$9.12710,800
1988-09-01$9.00$9.00363,600
1988-08-31$9.22$9.22408,400
1988-08-30$9.19$9.19269,200
1988-08-29$9.25$9.25415,600
1988-08-26$9.13$9.12174,800
1988-08-25$9.00$9.00217,200
1988-08-24$9.16$9.16347,200
1988-08-23$8.94$8.94484,400
1988-08-22$8.88$8.88636,000
1988-08-19$9.09$9.09136,000
1988-08-18$9.16$9.16329,200
1988-08-17$8.94$8.94398,000
1988-08-16$8.81$8.81752,000
1988-08-15$8.50$8.50575,600
1988-08-12$8.69$8.69476,800
1988-08-11$8.69$8.69454,800
1988-08-10$8.88$8.88737,600
1988-08-09$8.97$8.97984,000
1988-08-08$9.06$9.06560,800
1988-08-05$9.06$9.06291,200
1988-08-04$9.06$9.061,024,400
1988-08-03$8.94$8.94881,600
1988-08-02$8.72$8.72220,400
1988-08-01$8.81$8.81370,400
1988-07-29$8.81$8.811,997,200
1988-07-28$8.56$8.561,185,600
1988-07-27$8.38$8.371,560,800
1988-07-26$8.69$8.691,224,400
1988-07-25$8.75$8.75750,800
1988-07-22$8.63$8.621,145,600
1988-07-21$8.81$8.81725,600
1988-07-20$8.81$8.811,479,600
1988-07-19$8.66$8.66334,000
1988-07-18$8.84$8.84983,600
1988-07-15$8.94$8.94440,000
1988-07-14$9.00$9.001,079,600
1988-07-13$9.19$9.19275,600
1988-07-12$9.06$9.06446,400
1988-07-11$9.13$9.12445,600
1988-07-08$9.06$9.06350,000
1988-07-07$9.13$9.121,738,000
1988-07-06$9.38$9.37632,800
1988-07-05$9.50$9.50441,600
1988-07-01$9.44$9.44355,200
1988-06-30$9.56$9.56628,800
1988-06-29$9.50$9.50347,200
1988-06-28$9.63$9.62316,400
1988-06-27$9.38$9.37591,600
1988-06-24$9.72$9.72899,600
1988-06-23$9.88$9.88158,800
1988-06-22$9.94$9.94980,400
1988-06-21$9.88$9.88828,000
1988-06-20$9.94$9.94254,000
1988-06-17$9.94$9.94662,800
1988-06-16$9.75$9.75454,800
1988-06-15$9.75$9.751,202,800
1988-06-14$9.81$9.81746,000
1988-06-13$9.94$9.94426,000
1988-06-10$9.94$9.94717,200
1988-06-09$9.69$9.691,342,400
1988-06-08$9.38$9.37382,400
1988-06-07$9.13$9.12521,200
1988-06-06$9.31$9.31482,800
1988-06-03$9.56$9.56845,200
1988-06-02$9.56$9.56805,200
1988-06-01$9.50$9.501,298,400
1988-05-31$9.06$9.06994,800
1988-05-27$9.00$9.00222,400
1988-05-26$9.16$9.16602,400
1988-05-25$9.00$9.00245,200
1988-05-24$9.13$9.12430,800
1988-05-23$8.94$8.941,054,400
1988-05-20$9.00$9.00360,800
1988-05-19$9.03$9.031,054,000
1988-05-18$9.03$9.03542,800
1988-05-17$9.25$9.25972,000
1988-05-16$9.44$9.44489,200
1988-05-13$9.50$9.50172,400
1988-05-12$9.50$9.50545,200
1988-05-11$9.44$9.44548,000
1988-05-10$9.63$9.62367,200
1988-05-09$9.50$9.50647,200
1988-05-06$9.56$9.56518,000
1988-05-05$9.56$9.56551,600
1988-05-04$9.63$9.62734,000
1988-05-03$9.56$9.56493,200
1988-05-02$9.50$9.50231,200
1988-04-29$9.50$9.50448,000
1988-04-28$9.69$9.69267,600
1988-04-27$9.69$9.69495,200
1988-04-26$9.69$9.69507,600
1988-04-25$9.47$9.47106,800
1988-04-22$9.34$9.34187,200
1988-04-21$9.19$9.19636,400
1988-04-20$9.19$9.19571,600
1988-04-19$9.19$9.19271,200
1988-04-18$9.06$9.06406,400
1988-04-15$9.00$9.00837,200
1988-04-14$9.19$9.19934,800
1988-04-13$9.44$9.44743,600
1988-04-12$9.44$9.44654,000
1988-04-11$9.44$9.441,106,000
1988-04-08$9.34$9.34361,200
1988-04-07$9.31$9.31569,200
1988-04-06$9.16$9.161,465,600
1988-04-05$9.13$9.12816,800
1988-04-04$9.06$9.06897,200
1988-03-31$9.38$9.37700,800
1988-03-30$9.44$9.441,020,400
1988-03-29$9.44$9.441,316,000
1988-03-28$9.19$9.19605,600
1988-03-25$9.25$9.25916,400
1988-03-24$9.28$9.28724,400
1988-03-23$9.63$9.62907,200
1988-03-22$9.63$9.62821,600
1988-03-21$9.69$9.69438,000
1988-03-18$9.81$9.81978,400
1988-03-17$9.72$9.72505,200
1988-03-16$9.66$9.66860,000
1988-03-15$9.56$9.56364,800
1988-03-14$9.50$9.50522,400
1988-03-11$9.50$9.50493,200
1988-03-10$9.59$9.591,422,400
1988-03-09$9.56$9.56667,600
1988-03-08$9.50$9.50577,200
1988-03-07$9.38$9.37776,400
1988-03-04$9.63$9.62730,400
1988-03-03$9.88$9.881,142,000
1988-03-02$9.81$9.81545,200
1988-03-01$9.78$9.78948,800
1988-02-29$10.00$10.00684,400
1988-02-26$9.91$9.91723,600
1988-02-25$9.94$9.941,423,200
1988-02-24$10.00$10.001,168,400
1988-02-23$9.94$9.94858,400
1988-02-22$10.00$10.00856,000
1988-02-19$9.94$9.94977,200
1988-02-18$9.81$9.811,182,400
1988-02-17$10.00$10.002,141,600
1988-02-16$9.88$9.88638,800
1988-02-12$9.69$9.69587,200
1988-02-11$9.56$9.561,812,000
1988-02-10$9.25$9.251,297,200
1988-02-09$9.13$9.12802,000
1988-02-08$9.16$9.16482,800
1988-02-05$9.25$9.251,072,400
1988-02-04$9.06$9.06969,200
1988-02-03$8.94$8.94929,600
1988-02-02$9.00$9.00554,800
1988-02-01$9.00$9.00664,000
1988-01-29$8.91$8.91760,000
1988-01-28$8.72$8.72299,200
1988-01-27$8.63$8.62154,400
1988-01-26$8.47$8.47350,800
1988-01-25$8.31$8.31366,800
1988-01-22$8.31$8.31354,800
1988-01-21$8.38$8.37303,200
1988-01-20$8.44$8.441,011,600
1988-01-19$8.63$8.62753,600
1988-01-18$8.69$8.69683,600
1988-01-15$8.38$8.37706,000
1988-01-14$8.00$8.00258,400
1988-01-13$8.13$8.13508,000
1988-01-12$8.06$8.06607,200
1988-01-11$8.31$8.31963,600
1988-01-08$7.94$7.94730,400
1988-01-07$8.69$8.69458,800
1988-01-06$8.75$8.751,394,000
1988-01-05$8.81$8.812,014,800
1988-01-04$8.38$8.371,062,000