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 — 2005

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2005-12-30$6.47$6.47539,100
2005-12-29$6.40$6.40578,700
2005-12-28$6.39$6.39444,500
2005-12-27$6.39$6.39327,200
2005-12-23$6.77$6.77269,200
2005-12-22$6.67$6.67508,400
2005-12-21$6.60$6.60253,300
2005-12-20$6.52$6.52417,700
2005-12-19$6.59$6.59576,100
2005-12-16$6.79$6.79605,400
2005-12-15$6.80$6.80373,200
2005-12-14$6.81$6.81598,400
2005-12-13$6.86$6.86345,800
2005-12-12$6.87$6.87385,300
2005-12-09$6.91$6.91669,300
2005-12-08$7.07$7.071,053,200
2005-12-07$6.63$6.63410,600
2005-12-06$6.76$6.76450,500
2005-12-05$6.77$6.77400,400
2005-12-02$6.91$6.91294,700
2005-12-01$6.89$6.89593,000
2005-11-30$6.92$6.92729,700
2005-11-29$6.84$6.84561,000
2005-11-28$6.78$6.78684,400
2005-11-25$6.90$6.90220,700
2005-11-23$6.75$6.75850,600
2005-11-22$6.29$6.291,333,600
2005-11-21$6.27$6.27946,900
2005-11-18$6.44$6.44858,200
2005-11-17$6.30$6.30715,000
2005-11-16$6.59$6.59422,800
2005-11-15$6.73$6.73437,100
2005-11-14$6.85$6.85472,000
2005-11-11$6.98$6.98427,300
2005-11-10$6.99$6.99338,600
2005-11-09$6.77$6.77433,500
2005-11-08$6.90$6.90418,200
2005-11-07$6.99$6.99450,000
2005-11-04$7.00$7.00623,200
2005-11-03$7.04$7.04933,700
2005-11-02$7.15$7.15914,700
2005-11-01$6.95$6.95909,900
2005-10-31$7.38$7.38698,700
2005-10-28$7.11$7.11919,400
2005-10-27$6.84$6.84792,300
2005-10-26$7.20$7.201,165,300
2005-10-25$7.40$7.401,566,900
2005-10-24$7.59$7.59743,300
2005-10-21$7.34$7.34772,000
2005-10-20$7.30$7.30557,100
2005-10-19$7.29$7.29784,100
2005-10-18$7.10$7.10474,500
2005-10-17$7.08$7.08668,600
2005-10-14$7.02$7.02777,500
2005-10-13$6.63$6.63243,100
2005-10-12$6.59$6.59565,500
2005-10-11$6.59$6.59813,700
2005-10-10$6.60$6.60576,900
2005-10-07$6.41$6.41368,600
2005-10-06$6.41$6.41550,000
2005-10-05$6.40$6.40439,500
2005-10-04$6.66$6.66379,000
2005-10-03$6.70$6.70570,400
2005-09-30$6.72$6.72448,900
2005-09-29$6.67$6.67275,500
2005-09-28$6.55$6.55225,200
2005-09-27$6.60$6.60404,800
2005-09-26$6.64$6.64412,900
2005-09-23$6.62$6.62694,500
2005-09-22$6.31$6.31840,400
2005-09-21$6.27$6.271,025,200
2005-09-20$6.50$6.50589,300
2005-09-19$6.65$6.65411,900
2005-09-16$6.86$6.86507,700
2005-09-15$6.84$6.84578,200
2005-09-14$6.96$6.96319,100
2005-09-13$7.17$7.17220,900
2005-09-12$7.23$7.23377,200
2005-09-09$7.07$7.07299,200
2005-09-08$7.02$7.02428,700
2005-09-07$7.20$7.20466,100
2005-09-06$7.29$7.29569,700
2005-09-02$7.13$7.13594,700
2005-09-01$7.18$7.18518,500
2005-08-31$6.81$6.81582,600
2005-08-30$6.77$6.771,067,300
2005-08-29$6.62$6.62353,600
2005-08-26$6.51$6.51763,400
2005-08-25$6.72$6.72661,600
2005-08-24$6.72$6.721,384,600
2005-08-23$6.48$6.48701,700
2005-08-22$6.53$6.531,399,900
2005-08-19$6.44$6.44687,500
2005-08-18$6.39$6.391,630,000
2005-08-17$6.67$6.67636,300
2005-08-16$6.50$6.50871,800
2005-08-15$6.54$6.54605,600
2005-08-12$6.23$6.23679,900
2005-08-11$6.21$6.21473,800
2005-08-10$6.13$6.13639,400
2005-08-09$6.25$6.25463,400
2005-08-08$6.21$6.21719,500
2005-08-05$6.23$6.23485,600
2005-08-04$6.25$6.25336,100
2005-08-03$6.23$6.23792,000
2005-08-02$6.48$6.48581,300
2005-08-01$6.56$6.56647,800
2005-07-29$6.52$6.52569,000
2005-07-28$6.70$6.70520,700
2005-07-27$6.63$6.63864,600
2005-07-26$6.46$6.461,036,000
2005-07-25$6.18$6.18993,100
2005-07-22$6.06$6.061,199,300
2005-07-21$5.88$5.881,627,200
2005-07-20$6.17$6.174,232,200
2005-07-19$7.05$7.051,572,600
2005-07-18$7.40$7.40671,500
2005-07-15$7.70$7.70708,700
2005-07-14$7.95$7.95709,000
2005-07-13$8.07$8.07498,600
2005-07-12$8.20$8.20861,700
2005-07-11$8.34$8.34636,900
2005-07-08$8.14$8.14608,100
2005-07-07$7.78$7.78283,800
2005-07-06$7.72$7.72419,700
2005-07-05$7.79$7.79406,100
2005-07-01$7.44$7.44267,800
2005-06-30$7.37$7.37388,800
2005-06-29$7.32$7.32294,000
2005-06-28$7.40$7.40624,600
2005-06-27$6.96$6.96364,600
2005-06-24$7.07$7.07619,700
2005-06-23$6.93$6.93692,400
2005-06-22$7.25$7.25312,700
2005-06-21$7.37$7.37308,200
2005-06-20$7.45$7.45475,600
2005-06-17$7.56$7.56733,000
2005-06-16$7.50$7.50478,300
2005-06-15$7.29$7.29451,300
2005-06-14$7.46$7.46586,500
2005-06-13$7.66$7.66486,100
2005-06-10$7.46$7.46500,300
2005-06-09$7.54$7.54507,300
2005-06-08$7.11$7.11406,500
2005-06-07$7.28$7.28417,800
2005-06-06$7.49$7.49504,400
2005-06-03$7.57$7.57312,300
2005-06-02$7.65$7.65685,900
2005-06-01$7.25$7.25475,700
2005-05-31$7.27$7.27348,100
2005-05-27$7.18$7.18440,800
2005-05-26$7.24$7.24690,500
2005-05-25$7.19$7.19622,600
2005-05-24$7.29$7.291,165,500
2005-05-23$7.34$7.341,786,100
2005-05-20$7.94$7.94866,700
2005-05-19$8.08$8.081,389,300
2005-05-18$8.19$8.19616,900
2005-05-17$8.30$8.30418,800
2005-05-16$8.20$8.201,387,300
2005-05-13$8.35$8.35595,100
2005-05-12$8.53$8.53623,200
2005-05-11$8.52$8.52938,100
2005-05-10$8.55$8.55681,400
2005-05-09$8.80$8.801,478,300
2005-05-06$8.43$8.43730,000
2005-05-05$8.35$8.35705,900
2005-05-04$8.31$8.311,005,600
2005-05-03$8.35$8.35775,300
2005-05-02$8.39$8.39828,600
2005-04-29$8.42$8.42593,100
2005-04-28$8.43$8.43884,900
2005-04-27$8.53$8.531,572,100
2005-04-26$8.19$8.191,085,300
2005-04-25$8.22$8.22700,200
2005-04-22$8.16$8.161,181,800
2005-04-21$8.34$8.342,453,400
2005-04-20$8.36$8.3610,518,700
2005-04-19$6.95$6.951,635,300
2005-04-18$6.88$6.881,512,700
2005-04-15$6.85$6.853,104,500
2005-04-14$6.40$6.402,545,900
2005-04-13$6.10$6.102,419,300
2005-04-12$5.90$5.90789,000
2005-04-11$5.96$5.961,382,400
2005-04-08$6.11$6.11796,900
2005-04-07$6.20$6.20969,400
2005-04-06$6.00$6.00345,700
2005-04-05$6.01$6.01652,000
2005-04-04$6.05$6.051,419,900
2005-04-01$5.89$5.891,617,400
2005-03-31$6.24$6.24591,600
2005-03-30$6.36$6.36654,100
2005-03-29$6.17$6.17508,000
2005-03-28$6.38$6.38609,700
2005-03-24$6.31$6.311,211,500
2005-03-23$5.96$5.961,294,000
2005-03-22$6.42$6.42416,500
2005-03-21$6.62$6.62504,100
2005-03-18$6.58$6.58653,200
2005-03-17$6.70$6.70457,100
2005-03-16$6.68$6.681,263,500
2005-03-15$6.92$6.92585,700
2005-03-14$7.15$7.15773,300
2005-03-11$7.32$7.32927,000
2005-03-10$7.50$7.50470,500
2005-03-09$7.60$7.60689,400
2005-03-08$7.69$7.69864,500
2005-03-07$7.88$7.881,594,600
2005-03-04$7.53$7.53810,100
2005-03-03$7.55$7.552,293,600
2005-03-02$7.43$7.431,756,700
2005-03-01$7.40$7.40743,800
2005-02-28$7.57$7.571,460,000
2005-02-25$7.60$7.60721,000
2005-02-24$7.59$7.59532,200
2005-02-23$7.45$7.45459,900
2005-02-22$7.35$7.35774,600
2005-02-18$7.60$7.601,066,400
2005-02-17$7.91$7.911,116,000
2005-02-16$8.31$8.31717,000
2005-02-15$8.30$8.301,432,600
2005-02-14$8.00$8.001,161,900
2005-02-11$7.74$7.74690,200
2005-02-10$7.70$7.70711,500
2005-02-09$7.58$7.58779,100
2005-02-08$7.73$7.73661,300
2005-02-07$7.97$7.971,807,400
2005-02-04$7.99$7.991,559,900
2005-02-03$7.95$7.952,141,300
2005-02-02$8.70$8.70662,100
2005-02-01$8.66$8.661,332,500
2005-01-31$8.66$8.661,054,300
2005-01-28$8.76$8.761,204,000
2005-01-27$8.85$8.852,787,200
2005-01-26$8.50$8.507,266,200
2005-01-25$9.44$9.441,266,500
2005-01-24$9.49$9.491,259,400
2005-01-21$10.24$10.24545,400
2005-01-20$10.51$10.51745,900
2005-01-19$10.72$10.72903,000
2005-01-18$10.62$10.62930,100
2005-01-14$10.28$10.281,272,200
2005-01-13$10.10$10.10599,100
2005-01-12$10.11$10.11542,100
2005-01-11$10.08$10.08801,200
2005-01-10$10.29$10.29760,600
2005-01-07$10.28$10.28676,100
2005-01-06$10.24$10.24582,000
2005-01-05$10.40$10.40629,900
2005-01-04$10.41$10.41677,600
2005-01-03$10.56$10.56898,400