NASDAQ:ALGN | Historical Stock Price | ALIGN TECHNOLOGY 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
2001-01-30 to 2026-09-04
Data captured

Stock Price Chart

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

$1.73$5.85$19.78$66.91$226.31$765.482001-01-302026-08-27

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

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Historical Stock Price — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2009-12-31$17.82$17.82249,200
2009-12-30$17.88$17.88223,500
2009-12-29$17.93$17.93206,400
2009-12-28$17.92$17.92237,100
2009-12-24$17.82$17.8271,100
2009-12-23$17.76$17.76290,600
2009-12-22$17.42$17.42378,500
2009-12-21$17.18$17.18401,700
2009-12-18$16.93$16.931,191,400
2009-12-17$17.16$17.16357,500
2009-12-16$17.98$17.98336,600
2009-12-15$17.79$17.79470,700
2009-12-14$17.95$17.95295,300
2009-12-11$17.40$17.40641,600
2009-12-10$17.66$17.66592,100
2009-12-09$17.69$17.69364,900
2009-12-08$17.89$17.89274,400
2009-12-07$18.00$18.00403,400
2009-12-04$18.00$18.00555,400
2009-12-03$17.36$17.36372,400
2009-12-02$17.61$17.61590,500
2009-12-01$17.10$17.10938,800
2009-11-30$16.36$16.36640,500
2009-11-27$16.08$16.08209,600
2009-11-25$16.49$16.49493,300
2009-11-24$15.89$15.89263,100
2009-11-23$15.81$15.81239,400
2009-11-20$15.54$15.54418,000
2009-11-19$15.85$15.85526,100
2009-11-18$16.46$16.46297,000
2009-11-17$16.75$16.75403,400
2009-11-16$16.79$16.79727,900
2009-11-13$15.78$15.78336,500
2009-11-12$15.59$15.59467,300
2009-11-11$16.07$16.07392,700
2009-11-10$16.20$16.20302,200
2009-11-09$16.60$16.60499,100
2009-11-06$16.52$16.52384,500
2009-11-05$17.08$17.08724,200
2009-11-04$16.79$16.791,004,600
2009-11-03$16.35$16.35671,500
2009-11-02$16.05$16.05796,100
2009-10-30$15.72$15.72917,600
2009-10-29$15.94$15.94595,200
2009-10-28$16.05$16.051,099,500
2009-10-27$16.81$16.811,328,000
2009-10-26$17.03$17.031,250,500
2009-10-23$17.70$17.704,805,000
2009-10-22$15.38$15.38890,700
2009-10-21$14.94$14.94567,400
2009-10-20$15.22$15.22541,700
2009-10-19$15.60$15.60716,500
2009-10-16$15.63$15.63557,700
2009-10-15$15.82$15.82407,500
2009-10-14$15.92$15.92614,200
2009-10-13$16.09$16.09331,000
2009-10-12$16.02$16.02383,500
2009-10-09$16.25$16.25574,200
2009-10-08$15.93$15.93600,800
2009-10-07$16.29$16.29486,300
2009-10-06$16.25$16.25822,100
2009-10-05$15.76$15.761,026,300
2009-10-02$15.07$15.071,501,700
2009-10-01$14.60$14.60849,700
2009-09-30$14.22$14.22875,000
2009-09-29$14.35$14.35516,200
2009-09-28$14.63$14.63376,400
2009-09-25$14.57$14.57532,800
2009-09-24$14.61$14.61678,700
2009-09-23$14.00$14.00423,400
2009-09-22$14.00$14.00424,100
2009-09-21$14.03$14.03736,800
2009-09-18$13.68$13.68666,600
2009-09-17$13.51$13.51296,400
2009-09-16$13.53$13.53284,800
2009-09-15$13.61$13.61244,100
2009-09-14$13.72$13.72325,900
2009-09-11$13.62$13.62498,900
2009-09-10$13.45$13.45332,000
2009-09-09$13.34$13.34254,000
2009-09-08$13.16$13.16344,100
2009-09-04$13.08$13.08290,000
2009-09-03$13.05$13.05230,500
2009-09-02$13.07$13.07710,600
2009-09-01$12.91$12.91610,600
2009-08-31$13.40$13.40519,900
2009-08-28$13.50$13.50422,100
2009-08-27$13.75$13.75481,400
2009-08-26$13.78$13.78345,100
2009-08-25$13.76$13.76551,600
2009-08-24$13.60$13.60623,900
2009-08-21$13.31$13.311,067,100
2009-08-20$13.18$13.18700,500
2009-08-19$13.19$13.19971,400
2009-08-18$12.61$12.611,782,400
2009-08-17$13.00$13.006,490,500
2009-08-14$10.13$10.13541,600
2009-08-13$10.38$10.38575,200
2009-08-12$10.92$10.921,315,500
2009-08-11$9.97$9.97688,000
2009-08-10$10.41$10.41484,500
2009-08-07$10.13$10.131,064,000
2009-08-06$9.83$9.831,650,400
2009-08-05$10.40$10.40926,600
2009-08-04$11.13$11.13308,500
2009-08-03$11.19$11.19585,000
2009-07-31$10.91$10.91496,600
2009-07-30$11.10$11.10531,000
2009-07-29$11.02$11.02588,900
2009-07-28$11.04$11.041,022,300
2009-07-27$11.56$11.56973,800
2009-07-24$11.46$11.463,553,500
2009-07-23$9.46$9.46733,400
2009-07-22$9.34$9.34725,200
2009-07-21$9.36$9.361,371,400
2009-07-20$10.43$10.43487,200
2009-07-17$10.30$10.30626,200
2009-07-16$10.21$10.21541,100
2009-07-15$10.00$10.00468,700
2009-07-14$9.69$9.69500,600
2009-07-13$9.76$9.76889,500
2009-07-10$9.35$9.35535,400
2009-07-09$9.27$9.27949,200
2009-07-08$9.39$9.39744,000
2009-07-07$9.68$9.68596,300
2009-07-06$10.11$10.11519,400
2009-07-02$10.42$10.42680,600
2009-07-01$10.79$10.79613,400
2009-06-30$10.60$10.60655,100
2009-06-29$10.96$10.967,308,600
2009-06-26$10.81$10.811,394,600
2009-06-25$10.82$10.82521,600
2009-06-24$10.59$10.59722,900
2009-06-23$10.24$10.241,271,100
2009-06-22$9.49$9.49409,900
2009-06-19$9.91$9.91714,600
2009-06-18$9.83$9.83443,100
2009-06-17$9.75$9.75812,400
2009-06-16$9.81$9.81983,600
2009-06-15$10.46$10.46566,500
2009-06-12$10.98$10.98258,400
2009-06-11$11.14$11.14427,300
2009-06-10$11.27$11.27654,700
2009-06-09$11.33$11.33965,800
2009-06-08$10.97$10.97632,000
2009-06-05$11.08$11.08688,800
2009-06-04$11.80$11.801,185,200
2009-06-03$12.09$12.09315,600
2009-06-02$12.71$12.71602,300
2009-06-01$12.55$12.55520,400
2009-05-29$11.83$11.83481,900
2009-05-28$11.70$11.70245,200
2009-05-27$12.01$12.01299,000
2009-05-26$12.18$12.18376,500
2009-05-22$11.97$11.97354,500
2009-05-21$11.81$11.81752,200
2009-05-20$11.92$11.92284,800
2009-05-19$12.06$12.06346,600
2009-05-18$11.87$11.87363,800
2009-05-15$11.56$11.56329,100
2009-05-14$11.54$11.54780,000
2009-05-13$11.20$11.201,075,400
2009-05-12$11.58$11.58522,700
2009-05-11$12.26$12.26492,400
2009-05-08$12.54$12.54385,800
2009-05-07$12.02$12.02785,800
2009-05-06$11.93$11.931,038,600
2009-05-05$12.43$12.43466,700
2009-05-04$12.33$12.33455,500
2009-05-01$12.06$12.06594,000
2009-04-30$12.41$12.411,140,400
2009-04-29$12.46$12.46762,900
2009-04-28$11.83$11.831,301,400
2009-04-27$11.89$11.891,450,100
2009-04-24$12.12$12.122,610,400
2009-04-23$10.34$10.341,635,800
2009-04-22$10.17$10.17865,800
2009-04-21$9.96$9.96787,200
2009-04-20$9.70$9.70693,900
2009-04-17$10.00$10.00498,300
2009-04-16$9.86$9.86436,500
2009-04-15$9.68$9.68811,400
2009-04-14$9.32$9.321,068,900
2009-04-13$8.83$8.83335,500
2009-04-09$8.68$8.68873,600
2009-04-08$8.21$8.21605,000
2009-04-07$7.82$7.82657,300
2009-04-06$8.09$8.09407,200
2009-04-03$8.09$8.09331,700
2009-04-02$8.14$8.14425,800
2009-04-01$7.85$7.85601,800
2009-03-31$7.93$7.93881,200
2009-03-30$7.99$7.99464,400
2009-03-27$8.19$8.19752,500
2009-03-26$8.20$8.20517,400
2009-03-25$7.91$7.91795,600
2009-03-24$7.55$7.55594,500
2009-03-23$7.66$7.66685,400
2009-03-20$6.91$6.91639,800
2009-03-19$7.54$7.54299,700
2009-03-18$7.97$7.97306,200
2009-03-17$7.65$7.65247,800
2009-03-16$7.29$7.29245,800
2009-03-13$7.59$7.59920,800
2009-03-12$7.51$7.51603,800
2009-03-11$6.71$6.71329,200
2009-03-10$6.88$6.88506,700
2009-03-09$6.30$6.30327,000
2009-03-06$6.41$6.41431,300
2009-03-05$6.42$6.42524,000
2009-03-04$7.04$7.04433,700
2009-03-03$6.78$6.78665,300
2009-03-02$6.28$6.28537,400
2009-02-27$6.85$6.85485,500
2009-02-26$7.22$7.22402,800
2009-02-25$7.55$7.55311,900
2009-02-24$8.06$8.06753,400
2009-02-23$7.82$7.82732,100
2009-02-20$7.81$7.81317,200
2009-02-19$7.93$7.93395,500
2009-02-18$8.03$8.03442,500
2009-02-17$8.42$8.42501,100
2009-02-13$8.85$8.85389,500
2009-02-12$8.61$8.61626,600
2009-02-11$8.58$8.58528,700
2009-02-10$8.54$8.54765,600
2009-02-09$8.61$8.61310,300
2009-02-06$8.85$8.85425,400
2009-02-05$8.54$8.54566,600
2009-02-04$8.19$8.19460,300
2009-02-03$8.27$8.27718,100
2009-02-02$8.02$8.02644,900
2009-01-30$7.88$7.88762,200
2009-01-29$7.66$7.661,177,700
2009-01-28$7.82$7.82757,000
2009-01-27$8.15$8.15638,000
2009-01-26$8.47$8.47601,400
2009-01-23$8.41$8.41438,800
2009-01-22$8.73$8.73493,300
2009-01-21$8.84$8.84524,500
2009-01-20$8.36$8.36698,000
2009-01-16$9.25$9.25476,500
2009-01-15$9.25$9.25261,200
2009-01-14$9.03$9.03399,900
2009-01-13$9.21$9.21678,500
2009-01-12$9.21$9.21412,700
2009-01-09$8.82$8.82257,400
2009-01-08$9.01$9.01801,800
2009-01-07$9.36$9.36711,100
2009-01-06$9.60$9.60782,100
2009-01-05$9.25$9.25826,500
2009-01-02$8.89$8.89538,900