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 — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$209.43$209.43809,300
2018-12-28$208.29$208.29875,800
2018-12-27$211.33$211.33894,600
2018-12-26$210.99$210.991,274,600
2018-12-24$193.72$193.72504,800
2018-12-21$199.17$199.171,983,800
2018-12-20$197.78$197.781,787,700
2018-12-19$201.56$201.561,019,900
2018-12-18$209.50$209.50981,700
2018-12-17$206.97$206.97981,000
2018-12-14$215.57$215.571,206,800
2018-12-13$217.23$217.23884,500
2018-12-12$219.29$219.29749,600
2018-12-11$220.27$220.271,099,200
2018-12-10$216.66$216.661,081,300
2018-12-07$210.28$210.281,000,200
2018-12-06$219.34$219.341,413,500
2018-12-04$220.95$220.951,542,000
2018-12-03$235.70$235.701,372,400
2018-11-30$229.89$229.891,206,200
2018-11-29$228.70$228.701,157,100
2018-11-28$235.59$235.591,375,100
2018-11-27$220.71$220.711,416,300
2018-11-26$223.38$223.381,076,400
2018-11-23$218.87$218.87539,300
2018-11-21$215.72$215.721,130,600
2018-11-20$210.10$210.103,432,600
2018-11-19$204.43$204.431,804,400
2018-11-16$225.41$225.411,061,200
2018-11-15$222.77$222.77958,200
2018-11-14$219.99$219.991,026,200
2018-11-13$219.32$219.321,400,300
2018-11-12$217.29$217.291,601,200
2018-11-09$235.96$235.962,022,900
2018-11-08$245.67$245.671,431,200
2018-11-07$245.31$245.312,228,100
2018-11-06$229.37$229.37954,900
2018-11-05$228.12$228.121,315,100
2018-11-02$229.75$229.752,215,600
2018-11-01$230.95$230.951,557,900
2018-10-31$221.20$221.201,603,700
2018-10-30$223.01$223.011,850,400
2018-10-29$217.94$217.942,542,500
2018-10-26$230.13$230.134,629,400
2018-10-25$232.07$232.078,520,300
2018-10-24$290.83$290.832,090,000
2018-10-23$311.69$311.691,263,300
2018-10-22$314.22$314.221,272,400
2018-10-19$312.79$312.791,335,200
2018-10-18$323.06$323.06834,700
2018-10-17$332.83$332.83706,900
2018-10-16$334.94$334.941,123,700
2018-10-15$317.43$317.431,120,000
2018-10-12$327.50$327.501,478,700
2018-10-11$312.86$312.861,588,400
2018-10-10$316.03$316.031,670,200
2018-10-09$340.97$340.971,025,400
2018-10-08$342.87$342.871,379,000
2018-10-05$353.11$353.111,301,600
2018-10-04$357.89$357.891,277,100
2018-10-03$375.26$375.26879,800
2018-10-02$376.17$376.17892,100
2018-10-01$391.52$391.52615,700
2018-09-28$391.22$391.22495,700
2018-09-27$389.97$389.97447,000
2018-09-26$389.23$389.23591,500
2018-09-25$392.98$392.98613,200
2018-09-24$388.96$388.96475,400
2018-09-21$380.84$380.84785,800
2018-09-20$379.84$379.84626,800
2018-09-19$379.94$379.94552,200
2018-09-18$385.96$385.96475,100
2018-09-17$378.37$378.37754,400
2018-09-14$390.16$390.16746,400
2018-09-13$379.64$379.64553,100
2018-09-12$381.83$381.83527,400
2018-09-11$382.80$382.80603,200
2018-09-10$374.78$374.78550,900
2018-09-07$368.64$368.64515,400
2018-09-06$370.82$370.82671,300
2018-09-05$372.91$372.911,028,200
2018-09-04$385.33$385.33525,700
2018-08-31$386.49$386.49541,900
2018-08-30$387.05$387.05502,400
2018-08-29$385.43$385.43709,400
2018-08-28$382.25$382.25920,000
2018-08-27$381.87$381.87941,300
2018-08-24$367.60$367.60614,300
2018-08-23$363.59$363.59570,700
2018-08-22$361.36$361.36573,500
2018-08-21$355.89$355.89518,200
2018-08-20$352.28$352.28528,900
2018-08-17$357.30$357.30998,200
2018-08-16$351.20$351.20950,500
2018-08-15$350.45$350.451,074,700
2018-08-14$368.66$368.66559,600
2018-08-13$362.28$362.28364,600
2018-08-10$364.53$364.53389,700
2018-08-09$366.87$366.87529,800
2018-08-08$366.21$366.21462,400
2018-08-07$365.58$365.58615,900
2018-08-06$369.55$369.55526,700
2018-08-03$363.51$363.51712,900
2018-08-02$367.92$367.92803,900
2018-08-01$353.70$353.70871,200
2018-07-31$356.65$356.651,286,200
2018-07-30$348.58$348.581,262,800
2018-07-27$353.77$353.77837,800
2018-07-26$363.02$363.021,834,800
2018-07-25$381.77$381.77975,500
2018-07-24$372.59$372.59937,400
2018-07-23$377.50$377.50722,100
2018-07-20$375.38$375.38755,500
2018-07-19$370.32$370.32560,000
2018-07-18$372.31$372.31452,100
2018-07-17$370.53$370.53558,900
2018-07-16$362.28$362.28400,600
2018-07-13$363.45$363.45734,000
2018-07-12$362.82$362.82810,200
2018-07-11$348.87$348.87433,400
2018-07-10$351.45$351.45594,600
2018-07-09$348.97$348.97784,900
2018-07-06$347.47$347.47641,600
2018-07-05$341.38$341.38737,500
2018-07-03$338.68$338.68475,400
2018-07-02$340.28$340.281,047,100
2018-06-29$342.14$342.14937,600
2018-06-28$343.80$343.801,262,200
2018-06-27$342.78$342.781,009,800
2018-06-26$352.42$352.42939,900
2018-06-25$346.30$346.301,174,100
2018-06-22$353.27$353.271,296,500
2018-06-21$359.60$359.601,019,500
2018-06-20$364.70$364.70794,200
2018-06-19$365.24$365.24847,500
2018-06-18$370.10$370.10874,700
2018-06-15$362.66$362.661,143,500
2018-06-14$366.27$366.27872,400
2018-06-13$363.49$363.491,231,800
2018-06-12$354.25$354.25861,900
2018-06-11$348.44$348.44635,000
2018-06-08$346.67$346.67774,400
2018-06-07$339.32$339.321,225,400
2018-06-06$346.37$346.37768,000
2018-06-05$346.08$346.08925,200
2018-06-04$343.20$343.20794,600
2018-06-01$333.09$333.091,081,700
2018-05-31$331.95$331.951,421,700
2018-05-30$331.45$331.45903,300
2018-05-29$326.18$326.181,027,800
2018-05-25$318.54$318.541,268,100
2018-05-24$317.04$317.041,354,300
2018-05-23$308.20$308.201,243,400
2018-05-22$297.86$297.86856,100
2018-05-21$302.46$302.46853,700
2018-05-18$298.00$298.00900,800
2018-05-17$292.72$292.72927,900
2018-05-16$287.96$287.96880,800
2018-05-15$283.77$283.77868,300
2018-05-14$286.42$286.421,231,100
2018-05-11$286.49$286.491,471,600
2018-05-10$277.73$277.731,202,500
2018-05-09$268.00$268.00747,000
2018-05-08$265.46$265.46820,800
2018-05-07$265.03$265.031,186,300
2018-05-04$258.97$258.971,020,600
2018-05-03$255.14$255.14964,700
2018-05-02$249.47$249.47745,900
2018-05-01$251.34$251.34570,400
2018-04-30$249.85$249.851,103,500
2018-04-27$257.90$257.90981,700
2018-04-26$259.89$259.892,927,800
2018-04-25$245.63$245.631,298,100
2018-04-24$239.66$239.661,267,400
2018-04-23$247.20$247.20846,500
2018-04-20$247.07$247.071,323,300
2018-04-19$252.78$252.782,458,600
2018-04-18$277.05$277.05885,900
2018-04-17$272.65$272.65958,100
2018-04-16$265.50$265.50533,600
2018-04-13$261.72$261.72594,100
2018-04-12$263.76$263.76579,300
2018-04-11$257.02$257.02490,800
2018-04-10$258.27$258.27935,200
2018-04-09$249.06$249.06578,900
2018-04-06$245.23$245.23909,700
2018-04-05$255.35$255.351,096,500
2018-04-04$248.93$248.93752,900
2018-04-03$243.62$243.62847,500
2018-04-02$242.69$242.69927,800
2018-03-29$251.13$251.131,259,400
2018-03-28$244.42$244.421,175,000
2018-03-27$248.30$248.301,041,700
2018-03-26$261.52$261.52893,500
2018-03-23$250.92$250.92996,900
2018-03-22$260.13$260.13714,100
2018-03-21$270.14$270.14578,300
2018-03-20$270.40$270.40542,800
2018-03-19$265.39$265.39868,000
2018-03-16$270.41$270.41810,100
2018-03-15$272.87$272.87719,200
2018-03-14$272.48$272.48612,000
2018-03-13$269.71$269.71854,300
2018-03-12$275.61$275.61827,100
2018-03-09$271.74$271.74854,900
2018-03-08$268.18$268.18630,000
2018-03-07$262.90$262.90679,300
2018-03-06$255.97$255.97741,100
2018-03-05$255.49$255.49818,300
2018-03-02$253.71$253.711,015,700
2018-03-01$245.55$245.551,833,400
2018-02-28$262.52$262.52657,300
2018-02-27$263.87$263.87635,600
2018-02-26$266.58$266.58722,100
2018-02-23$265.07$265.07940,000
2018-02-22$259.68$259.681,084,800
2018-02-21$252.14$252.141,086,000
2018-02-20$255.45$255.451,138,900
2018-02-16$251.50$251.501,056,300
2018-02-15$252.77$252.771,410,700
2018-02-14$246.34$246.341,214,400
2018-02-13$233.73$233.73727,400
2018-02-12$233.13$233.131,206,800
2018-02-09$229.37$229.371,549,900
2018-02-08$220.71$220.711,918,300
2018-02-07$234.33$234.331,160,700
2018-02-06$241.45$241.452,283,400
2018-02-05$242.40$242.401,878,100
2018-02-02$257.38$257.381,622,800
2018-02-01$255.57$255.571,735,600
2018-01-31$262.00$262.004,011,400
2018-01-30$270.08$270.082,451,300
2018-01-29$276.77$276.771,585,200
2018-01-26$283.97$283.971,132,600
2018-01-25$273.56$273.56565,800
2018-01-24$272.28$272.28798,900
2018-01-23$272.16$272.16973,400
2018-01-22$267.10$267.101,147,200
2018-01-19$269.46$269.461,231,400
2018-01-18$270.70$270.701,088,500
2018-01-17$272.25$272.251,174,800
2018-01-16$263.88$263.881,197,900
2018-01-12$258.43$258.43892,900
2018-01-11$252.91$252.91722,400
2018-01-10$248.31$248.31874,800
2018-01-09$251.44$251.441,212,400
2018-01-08$248.90$248.902,067,000
2018-01-05$241.07$241.071,569,500
2018-01-04$233.30$233.301,363,000
2018-01-03$231.20$231.20924,700
2018-01-02$224.62$224.62979,700