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 — 2017

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2017-12-29$222.19$222.19560,200
2017-12-28$226.48$226.48612,100
2017-12-27$226.45$226.45706,600
2017-12-26$223.54$223.54445,800
2017-12-22$223.12$223.121,154,700
2017-12-21$218.76$218.762,062,600
2017-12-20$233.65$233.65485,800
2017-12-19$235.05$235.05611,300
2017-12-18$235.47$235.47800,200
2017-12-15$233.55$233.551,642,600
2017-12-14$233.80$233.80979,900
2017-12-13$235.63$235.63739,200
2017-12-12$234.37$234.371,010,800
2017-12-11$233.66$233.661,056,900
2017-12-08$238.43$238.431,004,300
2017-12-07$241.38$241.381,218,000
2017-12-06$233.01$233.011,216,400
2017-12-05$227.36$227.362,147,900
2017-12-04$225.80$225.803,879,100
2017-12-01$254.07$254.071,354,900
2017-11-30$260.88$260.881,085,100
2017-11-29$258.37$258.371,336,200
2017-11-28$264.23$264.231,018,300
2017-11-27$262.42$262.421,049,100
2017-11-24$254.76$254.76285,600
2017-11-22$254.38$254.38805,000
2017-11-21$256.43$256.431,303,800
2017-11-20$255.51$255.51718,200
2017-11-17$253.89$253.89666,800
2017-11-16$254.92$254.921,048,900
2017-11-15$249.19$249.191,465,100
2017-11-14$254.02$254.02948,300
2017-11-13$253.73$253.73952,400
2017-11-10$249.46$249.46927,600
2017-11-09$249.63$249.631,314,700
2017-11-08$252.74$252.741,080,500
2017-11-07$246.46$246.46613,000
2017-11-06$244.50$244.501,063,600
2017-11-03$241.35$241.351,034,900
2017-11-02$233.47$233.471,036,800
2017-11-01$234.95$234.951,441,600
2017-10-31$238.98$238.98951,700
2017-10-30$235.57$235.571,407,500
2017-10-27$235.94$235.943,295,000
2017-10-26$202.98$202.981,933,400
2017-10-25$201.75$201.751,106,000
2017-10-24$203.72$203.721,112,200
2017-10-23$202.76$202.761,243,700
2017-10-20$200.88$200.882,882,500
2017-10-19$196.85$196.85928,100
2017-10-18$194.23$194.23775,700
2017-10-17$194.27$194.27805,600
2017-10-16$193.37$193.371,187,500
2017-10-13$192.81$192.81699,800
2017-10-12$192.38$192.38736,700
2017-10-11$192.46$192.46878,700
2017-10-10$188.67$188.67665,100
2017-10-09$188.13$188.13779,800
2017-10-06$187.04$187.041,104,100
2017-10-05$186.61$186.61641,600
2017-10-04$185.98$185.98599,900
2017-10-03$186.45$186.45558,700
2017-10-02$187.22$187.22705,700
2017-09-29$186.27$186.27784,700
2017-09-28$183.04$183.04889,700
2017-09-27$184.78$184.78675,600
2017-09-26$184.20$184.20693,700
2017-09-25$184.89$184.89605,200
2017-09-22$188.00$188.00575,100
2017-09-21$186.32$186.32641,000
2017-09-20$188.78$188.78565,000
2017-09-19$187.18$187.18893,200
2017-09-18$188.34$188.341,111,100
2017-09-15$184.50$184.501,861,700
2017-09-14$184.86$184.86872,100
2017-09-13$183.57$183.57998,200
2017-09-12$185.66$185.66639,800
2017-09-11$184.12$184.12739,200
2017-09-08$181.44$181.44566,200
2017-09-07$179.99$179.991,003,500
2017-09-06$176.63$176.63685,600
2017-09-05$179.33$179.331,043,800
2017-09-01$176.38$176.38665,400
2017-08-31$176.74$176.74998,700
2017-08-30$174.88$174.88589,300
2017-08-29$173.99$173.99699,000
2017-08-28$175.11$175.11598,300
2017-08-25$172.55$172.55822,600
2017-08-24$175.31$175.31926,300
2017-08-23$172.85$172.85869,700
2017-08-22$172.55$172.55899,800
2017-08-21$167.98$167.98953,400
2017-08-18$168.61$168.611,393,400
2017-08-17$169.36$169.361,957,700
2017-08-16$178.46$178.46628,700
2017-08-15$177.97$177.97893,500
2017-08-14$174.16$174.16610,600
2017-08-11$173.56$173.56719,200
2017-08-10$171.23$171.231,084,000
2017-08-09$175.77$175.77991,800
2017-08-08$173.62$173.621,085,400
2017-08-07$174.01$174.011,088,100
2017-08-04$169.30$169.30508,600
2017-08-03$170.46$170.46757,000
2017-08-02$167.99$167.99725,800
2017-08-01$169.43$169.431,286,000
2017-07-31$167.23$167.231,289,400
2017-07-28$173.06$173.062,454,700
2017-07-27$157.26$157.261,489,200
2017-07-26$158.69$158.69810,300
2017-07-25$158.56$158.561,071,000
2017-07-24$161.19$161.19833,300
2017-07-21$158.87$158.87837,300
2017-07-20$160.17$160.17952,700
2017-07-19$159.28$159.28892,300
2017-07-18$156.02$156.02556,000
2017-07-17$156.21$156.211,003,200
2017-07-14$154.30$154.30517,900
2017-07-13$152.19$152.19409,800
2017-07-12$152.51$152.51682,600
2017-07-11$151.59$151.59754,800
2017-07-10$151.58$151.58533,000
2017-07-07$151.95$151.95486,400
2017-07-06$149.74$149.74679,100
2017-07-05$151.94$151.94551,900
2017-07-03$149.03$149.03340,600
2017-06-30$150.12$150.12577,200
2017-06-29$148.62$148.62781,100
2017-06-28$152.24$152.24727,700
2017-06-27$149.34$149.34883,100
2017-06-26$151.67$151.67724,800
2017-06-23$153.50$153.502,206,200
2017-06-22$149.69$149.69654,900
2017-06-21$149.42$149.42670,200
2017-06-20$146.99$146.99943,500
2017-06-19$149.70$149.701,636,500
2017-06-16$145.26$145.2617,940,200
2017-06-15$144.02$144.021,055,600
2017-06-14$144.30$144.30867,300
2017-06-13$144.38$144.381,023,900
2017-06-12$143.41$143.412,236,800
2017-06-09$148.85$148.851,149,900
2017-06-08$151.82$151.82776,400
2017-06-07$149.13$149.13652,300
2017-06-06$148.62$148.62534,500
2017-06-05$148.83$148.83830,600
2017-06-02$149.70$149.701,235,800
2017-06-01$145.91$145.91964,600
2017-05-31$145.20$145.201,151,300
2017-05-30$143.33$143.33766,700
2017-05-26$142.10$142.101,176,600
2017-05-25$141.39$141.391,908,300
2017-05-24$138.65$138.651,017,400
2017-05-23$138.22$138.22894,300
2017-05-22$138.10$138.10982,900
2017-05-19$138.43$138.43768,100
2017-05-18$137.69$137.69882,700
2017-05-17$136.08$136.08733,300
2017-05-16$138.61$138.61595,600
2017-05-15$138.46$138.46788,700
2017-05-12$138.67$138.67689,600
2017-05-11$137.46$137.46561,000
2017-05-10$137.01$137.011,119,300
2017-05-09$138.17$138.17729,900
2017-05-08$137.00$137.001,411,600
2017-05-05$138.03$138.031,440,100
2017-05-04$141.89$141.892,072,500
2017-05-03$131.97$131.971,720,200
2017-05-02$134.12$134.121,643,000
2017-05-01$133.68$133.681,433,300
2017-04-28$134.62$134.624,319,300
2017-04-27$120.09$120.091,301,300
2017-04-26$119.74$119.74570,000
2017-04-25$118.78$118.781,075,000
2017-04-24$120.34$120.34824,100
2017-04-21$118.44$118.44719,400
2017-04-20$118.87$118.87670,100
2017-04-19$117.55$117.55490,000
2017-04-18$116.32$116.32410,100
2017-04-17$115.18$115.18465,000
2017-04-13$113.73$113.73497,200
2017-04-12$114.11$114.11484,600
2017-04-11$114.95$114.95473,900
2017-04-10$114.73$114.73446,300
2017-04-07$114.74$114.74511,700
2017-04-06$115.19$115.19509,600
2017-04-05$114.80$114.80448,800
2017-04-04$115.61$115.61578,900
2017-04-03$116.36$116.361,110,000
2017-03-31$114.71$114.71563,200
2017-03-30$113.96$113.96637,300
2017-03-29$114.23$114.23297,600
2017-03-28$113.90$113.90394,400
2017-03-27$114.02$114.02641,100
2017-03-24$113.87$113.87664,400
2017-03-23$112.55$112.55526,700
2017-03-22$111.99$111.99509,500
2017-03-21$111.06$111.061,027,600
2017-03-20$113.23$113.23862,200
2017-03-17$111.85$111.851,195,100
2017-03-16$110.47$110.47616,800
2017-03-15$110.31$110.311,082,000
2017-03-14$107.48$107.48490,500
2017-03-13$107.99$107.99665,800
2017-03-10$105.32$105.32448,000
2017-03-09$105.36$105.36481,400
2017-03-08$103.72$103.72375,200
2017-03-07$103.15$103.15609,300
2017-03-06$102.74$102.74771,700
2017-03-03$104.04$104.04516,600
2017-03-02$104.12$104.12568,500
2017-03-01$103.83$103.83780,900
2017-02-28$102.76$102.76778,500
2017-02-27$102.26$102.26631,000
2017-02-24$102.89$102.89723,900
2017-02-23$101.16$101.16610,400
2017-02-22$101.09$101.09870,900
2017-02-21$101.86$101.86571,800
2017-02-17$101.77$101.77664,200
2017-02-16$100.42$100.42846,200
2017-02-15$99.96$99.96598,000
2017-02-14$98.39$98.39791,100
2017-02-13$97.61$97.61592,100
2017-02-10$96.97$96.97740,500
2017-02-09$95.98$95.98670,500
2017-02-08$94.17$94.17599,400
2017-02-07$93.65$93.65954,100
2017-02-06$93.85$93.851,238,500
2017-02-03$95.82$95.821,104,700
2017-02-02$95.13$95.131,761,600
2017-02-01$97.25$97.253,782,000
2017-01-31$91.69$91.691,693,000
2017-01-30$89.98$89.981,433,400
2017-01-27$90.93$90.931,719,100
2017-01-26$92.23$92.23594,600
2017-01-25$93.41$93.41449,200
2017-01-24$91.65$91.65848,700
2017-01-23$92.04$92.04673,000
2017-01-20$91.70$91.70822,200
2017-01-19$90.55$90.552,107,500
2017-01-18$94.42$94.42794,100
2017-01-17$95.34$95.34539,500
2017-01-13$96.01$96.01516,400
2017-01-12$95.55$95.55513,500
2017-01-11$96.00$96.00600,000
2017-01-10$96.13$96.13781,200
2017-01-09$94.79$94.791,033,000
2017-01-06$94.08$94.08998,400
2017-01-05$94.82$94.82731,700
2017-01-04$97.77$97.77675,500
2017-01-03$96.96$96.96816,700