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 — 1986

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1986-12-31$8.19$8.19378,400
1986-12-30$8.19$8.19485,200
1986-12-29$8.38$8.37462,000
1986-12-26$8.38$8.37180,000
1986-12-24$8.31$8.31189,200
1986-12-23$8.38$8.37282,800
1986-12-22$8.50$8.50371,600
1986-12-19$8.38$8.37883,600
1986-12-18$8.44$8.44349,200
1986-12-17$8.50$8.50345,200
1986-12-16$8.69$8.69770,000
1986-12-15$8.63$8.62768,400
1986-12-12$8.06$8.06332,000
1986-12-11$8.06$8.061,172,000
1986-12-10$8.38$8.37341,200
1986-12-09$8.44$8.44302,400
1986-12-08$8.50$8.50712,000
1986-12-05$8.56$8.56636,400
1986-12-04$8.94$8.94643,200
1986-12-03$9.06$9.061,016,800
1986-12-02$8.94$8.94845,600
1986-12-01$8.88$8.88596,000
1986-11-28$9.00$9.00236,000
1986-11-26$9.06$9.06171,600
1986-11-25$9.00$9.00424,000
1986-11-24$9.13$9.12715,600
1986-11-21$8.94$8.94666,800
1986-11-20$8.50$8.50828,400
1986-11-19$8.31$8.31495,600
1986-11-18$8.25$8.25605,600
1986-11-17$8.38$8.37734,400
1986-11-14$8.38$8.37806,000
1986-11-13$8.38$8.37578,800
1986-11-12$8.97$8.97669,600
1986-11-11$8.94$8.94142,000
1986-11-10$8.75$8.75503,200
1986-11-07$8.78$8.78517,200
1986-11-06$8.81$8.81434,000
1986-11-05$8.88$8.88231,200
1986-11-04$8.94$8.94283,200
1986-11-03$9.00$9.00408,800
1986-10-31$9.00$9.00632,400
1986-10-30$9.06$9.06973,200
1986-10-29$8.88$8.88835,600
1986-10-28$8.50$8.50329,200
1986-10-27$8.31$8.31305,200
1986-10-24$8.31$8.31809,600
1986-10-23$8.28$8.281,358,400
1986-10-22$8.25$8.25396,000
1986-10-21$8.19$8.19327,200
1986-10-20$8.31$8.31595,200
1986-10-17$8.50$8.50216,000
1986-10-16$8.69$8.69269,200
1986-10-15$8.75$8.75606,800
1986-10-14$8.50$8.50612,000
1986-10-13$8.06$8.06362,800
1986-10-10$8.31$8.31238,400
1986-10-09$8.44$8.44243,200
1986-10-08$8.63$8.62558,800
1986-10-07$8.44$8.44176,000
1986-10-06$8.44$8.44467,600
1986-10-03$8.38$8.37228,000
1986-10-02$8.56$8.56592,000
1986-10-01$8.56$8.56668,400
1986-09-30$8.56$8.56773,200
1986-09-29$8.25$8.25724,800
1986-09-26$8.31$8.31278,400
1986-09-25$8.31$8.31305,600
1986-09-24$8.50$8.50649,600
1986-09-23$8.25$8.25436,400
1986-09-22$8.50$8.50464,000
1986-09-19$8.56$8.56928,000
1986-09-18$8.75$8.75833,200
1986-09-17$7.38$7.37997,600
1986-09-16$7.44$7.441,547,200
1986-09-15$7.63$7.621,746,800
1986-09-12$7.63$7.622,066,800
1986-09-11$7.94$7.946,240,000
1986-09-10$8.50$8.50802,400
1986-09-09$8.63$8.62388,000
1986-09-08$8.75$8.751,793,200
1986-09-05$9.00$9.00961,600
1986-09-04$9.31$9.31576,800
1986-09-03$8.94$8.94684,400
1986-09-02$8.75$8.75916,800
1986-08-29$9.13$9.121,128,800
1986-08-28$9.19$9.19286,000
1986-08-27$9.31$9.31686,400
1986-08-26$9.38$9.37408,800
1986-08-25$9.25$9.25766,400
1986-08-22$9.38$9.37286,000
1986-08-21$9.44$9.44353,200
1986-08-20$9.50$9.50500,000
1986-08-19$9.56$9.562,744,000
1986-08-18$9.69$9.69606,800
1986-08-15$9.38$9.37654,400
1986-08-14$9.50$9.50762,000
1986-08-13$9.69$9.69865,600
1986-08-12$9.38$9.371,155,200
1986-08-11$9.13$9.121,428,000
1986-08-08$8.88$8.882,802,000
1986-08-07$8.38$8.377,560,000
1986-08-06$9.13$9.12550,400
1986-08-05$9.56$9.56868,800
1986-08-04$9.75$9.75892,400
1986-08-01$9.75$9.751,118,000
1986-07-31$10.06$10.061,213,600
1986-07-30$10.13$10.12459,200
1986-07-29$10.19$10.19278,400
1986-07-28$10.13$10.12414,800
1986-07-25$10.06$10.06688,400
1986-07-24$9.94$9.941,071,600
1986-07-23$10.06$10.061,004,000
1986-07-22$10.19$10.19390,800
1986-07-21$10.25$10.25322,800
1986-07-18$10.25$10.251,420,000
1986-07-17$10.19$10.191,046,000
1986-07-16$10.13$10.121,160,400
1986-07-15$9.94$9.942,059,200
1986-07-14$10.25$10.25738,000
1986-07-11$10.56$10.56800,400
1986-07-10$10.94$10.94595,600
1986-07-09$11.00$11.001,116,800