Align Technology Inc (ALGN) stock
ALGNNasdaqOrthopedic, Prosthetic & Surgical Appliances & SuppliesFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 5, 2026Score 15/3026% below fair value
$149.89−3.82 (-2.49%)
Close on Oct 30, 2026Market cap $10.65BP/E 26.1Yield –
Price history
Align Technology share prices for every month, newest first. Adjusted for stock splits, not for dividends.
Close, Oct 30, 2026
$149.89
-2.49% on the day
52-week range
$130.23 – $200.44
-25.2% from the high
Change over 52 weeks
+8.3%
From $138.43 on Oct 30, 2025
Average volume
954,816
Shares a day, last 90 sessions
| Month | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 2026 | $145.00 | $156.50 | $138.05 | $149.89 | +3.12% | 22,348,183 |
| Sep 2026 | $158.21 | $162.92 | $142.24 | $145.35 | -9.04% | 18,930,145 |
| Aug 2026 | $171.41 | $182.20 | $154.50 | $159.79 | -5.54% | 17,789,255 |
| Jul 2026 | $168.66 | $190.97 | $164.74 | $169.16 | +0.30% | 22,000,781 |
| Jun 2026 | $172.40 | $185.00 | $160.70 | $168.66 | -3.60% | 22,395,660 |
| May 2026 | $177.16 | $179.37 | $151.58 | $174.95 | -0.60% | 19,693,846 |
| Apr 2026 | $172.61 | $200.44 | $164.00 | $176.01 | +2.67% | 22,458,389 |
| Mar 2026 | $184.59 | $189.35 | $162.27 | $171.43 | -9.82% | 30,435,578 |
| Feb 2026 | $162.83 | $199.06 | $154.83 | $190.10 | +16.60% | 28,726,653 |
| Jan 2026 | $157.72 | $174.67 | $154.62 | $163.03 | +4.41% | 17,517,856 |
| Dec 2025 | $145.10 | $167.02 | $144.00 | $156.15 | +6.09% | 27,131,293 |
| Nov 2025 | $137.58 | $152.99 | $130.23 | $147.19 | +6.75% | 28,183,500 |
| Oct 2025 | $126.31 | $150.78 | $124.91 | $137.88 | +10.11% | 31,195,495 |
| Sep 2025 | $138.86 | $140.37 | $122.00 | $125.22 | -11.79% | 26,837,549 |
| Aug 2025 | $129.00 | $150.22 | $129.00 | $141.96 | +10.04% | 39,136,895 |
| Jul 2025 | $188.07 | $208.31 | $127.70 | $129.01 | -31.86% | 33,922,365 |
| Jun 2025 | $179.88 | $190.53 | $172.50 | $189.33 | +4.64% | 16,480,203 |
| May 2025 | $190.00 | $196.38 | $168.01 | $180.94 | +4.41% | 21,592,380 |
| Apr 2025 | $157.06 | $186.28 | $141.74 | $173.30 | +9.09% | 30,057,725 |
| Mar 2025 | $188.63 | $188.76 | $153.77 | $158.86 | -15.06% | 27,855,499 |
| Feb 2025 | $213.90 | $232.20 | $183.25 | $187.03 | -14.64% | 20,505,988 |
| Jan 2025 | $211.77 | $237.23 | $206.00 | $219.11 | +5.08% | 12,716,273 |
| Dec 2024 | $231.22 | $246.19 | $204.13 | $208.51 | -10.42% | 13,553,087 |
| Nov 2024 | $204.81 | $241.15 | $204.77 | $232.77 | +13.53% | 16,312,726 |
| Oct 2024 | $254.85 | $256.22 | $204.93 | $205.03 | -19.38% | 20,477,561 |
| Sep 2024 | $234.23 | $262.87 | $218.25 | $254.32 | +7.21% | 13,189,040 |
| Aug 2024 | $230.35 | $245.19 | $196.09 | $237.22 | +2.30% | 17,129,252 |
| Jul 2024 | $241.65 | $263.24 | $217.55 | $231.88 | -3.96% | 18,608,509 |
| Jun 2024 | $257.21 | $271.59 | $232.80 | $241.43 | -6.14% | 17,956,540 |
| May 2024 | $282.03 | $295.69 | $249.73 | $257.21 | -8.91% | 14,952,589 |
| Apr 2024 | $327.01 | $331.64 | $282.01 | $282.38 | -13.89% | 15,197,196 |
| Mar 2024 | $301.36 | $335.40 | $296.14 | $327.92 | +8.43% | 9,903,103 |
| Feb 2024 | $303.00 | $321.83 | $263.85 | $302.42 | +13.13% | 20,444,348 |
| Jan 2024 | $271.00 | $281.94 | $250.28 | $267.32 | -2.44% | 17,455,675 |
| Dec 2023 | $213.30 | $279.00 | $211.80 | $274.00 | +28.16% | 26,217,272 |
| Nov 2023 | $183.74 | $221.65 | $178.52 | $213.80 | +15.82% | 25,952,131 |
| Oct 2023 | $302.97 | $305.36 | $176.34 | $184.59 | -39.54% | 25,993,932 |
| Sep 2023 | $375.14 | $375.68 | $293.42 | $305.32 | -17.51% | 12,786,579 |
| Aug 2023 | $374.68 | $379.73 | $342.00 | $370.14 | -2.05% | 11,722,529 |
| Jul 2023 | $350.70 | $413.20 | $323.53 | $377.89 | +6.86% | 19,574,154 |
| Jun 2023 | $283.65 | $356.24 | $282.29 | $353.64 | +25.11% | 13,780,621 |
| May 2023 | $324.89 | $326.51 | $273.47 | $282.66 | -13.11% | 15,302,156 |
| Apr 2023 | $333.29 | $363.27 | $309.00 | $325.30 | -2.65% | 14,971,760 |
| Mar 2023 | $307.50 | $357.00 | $300.86 | $334.14 | +7.96% | 22,279,207 |
| Feb 2023 | $270.29 | $368.87 | $268.94 | $309.50 | +14.74% | 23,923,418 |
| Jan 2023 | $215.46 | $270.00 | $208.29 | $269.73 | +27.89% | 19,861,356 |
| Dec 2022 | $197.59 | $216.04 | $183.26 | $210.90 | +7.24% | 20,341,385 |
| Nov 2022 | $197.55 | $221.62 | $172.05 | $196.66 | +1.21% | 22,632,091 |
| Oct 2022 | $209.14 | $233.64 | $176.00 | $194.30 | -6.19% | 23,843,246 |
| Sep 2022 | $238.96 | $272.15 | $204.32 | $207.11 | -15.01% | 19,460,621 |
| Aug 2022 | $278.33 | $302.97 | $242.91 | $243.70 | -13.26% | 15,675,892 |
| Jul 2022 | $237.03 | $286.46 | $235.28 | $280.97 | +18.72% | 18,987,387 |
| Jun 2022 | $281.07 | $287.05 | $225.86 | $236.67 | -14.76% | 24,996,272 |
| May 2022 | $292.48 | $311.92 | $250.64 | $277.64 | -4.23% | 25,632,100 |
| Apr 2022 | $439.42 | $451.19 | $270.37 | $289.91 | -33.51% | 19,189,083 |
| Mar 2022 | $508.73 | $509.83 | $372.62 | $436.00 | -14.75% | 19,749,150 |
| Feb 2022 | $494.18 | $552.00 | $464.01 | $511.46 | +3.33% | 17,500,427 |
| Jan 2022 | $656.30 | $658.50 | $432.09 | $494.96 | -24.68% | 20,115,747 |
| Dec 2021 | $622.92 | $688.60 | $581.30 | $657.18 | +7.46% | 11,372,008 |
| Nov 2021 | $631.50 | $713.33 | $607.47 | $611.53 | -2.06% | 11,034,804 |
| Oct 2021 | $672.00 | $674.95 | $572.51 | $624.37 | -6.17% | 16,691,421 |
| Sep 2021 | $713.14 | $737.45 | $665.41 | $665.43 | -6.15% | 10,322,105 |
| Aug 2021 | $700.00 | $721.45 | $669.31 | $709.00 | +1.90% | 10,817,936 |
| Jul 2021 | $609.31 | $697.87 | $589.24 | $695.80 | +13.88% | 12,808,743 |
| Jun 2021 | $592.44 | $629.35 | $563.87 | $611.00 | +3.53% | 13,140,062 |
| May 2021 | $599.14 | $611.00 | $536.23 | $590.15 | -0.90% | 12,043,637 |
| Apr 2021 | $546.24 | $647.20 | $544.00 | $595.53 | +9.97% | 11,463,735 |
| Mar 2021 | $567.57 | $577.80 | $494.45 | $541.53 | -4.51% | 16,986,160 |
| Feb 2021 | $539.93 | $634.46 | $527.02 | $567.11 | +7.94% | 12,324,914 |
| Jan 2021 | $549.61 | $579.50 | $507.77 | $525.38 | -1.68% | 9,581,680 |
| Dec 2020 | $487.46 | $543.65 | $485.60 | $534.38 | +11.03% | 10,076,819 |
| Nov 2020 | $432.10 | $507.05 | $430.37 | $481.29 | +12.96% | 13,553,401 |
| Oct 2020 | $333.64 | $475.37 | $310.03 | $426.08 | +30.16% | 20,598,185 |
| Sep 2020 | $297.10 | $340.29 | $293.33 | $327.36 | +10.23% | 14,915,304 |
| Aug 2020 | $296.01 | $316.28 | $279.83 | $296.98 | +1.08% | 11,958,600 |
| Jul 2020 | $275.95 | $326.36 | $267.63 | $293.82 | +7.06% | 19,177,017 |
| Jun 2020 | $247.34 | $292.04 | $237.24 | $274.44 | +11.73% | 22,285,905 |
| May 2020 | $208.08 | $255.65 | $195.56 | $245.62 | +14.32% | 22,941,234 |
| Apr 2020 | $164.09 | $227.44 | $150.38 | $214.85 | +23.51% | 28,813,433 |
| Mar 2020 | $218.91 | $238.68 | $127.88 | $173.95 | -20.33% | 31,547,144 |
| Feb 2020 | $257.50 | $277.68 | $211.01 | $218.35 | -15.07% | 16,643,871 |
| Jan 2020 | $281.20 | $301.65 | $248.35 | $257.10 | -7.86% | 19,745,739 |
| Dec 2019 | $276.54 | $280.68 | $257.43 | $279.04 | +0.61% | 12,358,109 |
| Nov 2019 | $254.31 | $281.57 | $253.02 | $277.34 | +9.93% | 12,663,825 |
| Oct 2019 | $181.22 | $257.63 | $175.52 | $252.29 | +39.45% | 27,280,410 |
| Sep 2019 | $182.23 | $188.16 | $169.84 | $180.92 | -1.20% | 27,386,750 |
| Aug 2019 | $209.09 | $209.99 | $172.11 | $183.11 | -12.42% | 26,469,540 |
| Jul 2019 | $280.64 | $290.78 | $189.60 | $209.08 | -23.61% | 35,296,466 |
| Jun 2019 | $282.86 | $319.17 | $263.70 | $273.70 | -3.75% | 20,410,402 |
| May 2019 | $325.26 | $334.64 | $272.60 | $284.35 | -12.42% | 20,800,311 |
| Apr 2019 | $287.44 | $325.37 | $271.66 | $324.68 | +14.19% | 25,281,294 |
| Mar 2019 | $261.24 | $284.61 | $224.58 | $284.33 | +9.79% | 32,002,718 |
| Feb 2019 | $248.08 | $263.64 | $234.23 | $258.97 | +4.02% | 20,814,038 |
| Jan 2019 | $205.32 | $249.24 | $177.93 | $248.95 | +18.87% | 37,903,181 |
| Dec 2018 | $234.40 | $235.92 | $190.75 | $209.43 | -8.90% | 21,120,269 |
| Nov 2018 | $222.27 | $248.50 | $188.57 | $229.89 | +3.93% | 30,819,400 |
| Oct 2018 | $393.36 | $397.85 | $203.12 | $221.20 | -43.46% | 40,799,424 |
| Sep 2018 | $386.64 | $398.88 | $365.20 | $391.22 | +1.22% | 11,433,063 |
| Aug 2018 | $356.65 | $392.69 | $342.30 | $386.49 | +8.37% | 15,025,894 |
| Jul 2018 | $334.90 | $385.00 | $332.01 | $356.65 | +4.24% | 16,720,677 |
| Jun 2018 | $333.17 | $371.55 | $325.28 | $342.14 | +3.07% | 20,309,933 |
| May 2018 | $249.21 | $338.50 | $244.40 | $331.95 | +32.86% | 22,344,647 |
| Apr 2018 | $251.00 | $280.23 | $234.40 | $249.85 | -0.51% | 22,090,215 |
| Mar 2018 | $255.00 | $277.32 | $241.03 | $251.13 | -4.34% | 18,428,001 |
| Feb 2018 | $261.59 | $268.40 | $219.11 | $262.52 | +0.20% | 23,987,315 |
| Jan 2018 | $222.61 | $287.32 | $220.36 | $262.00 | +17.92% | 27,798,806 |
| Dec 2017 | $259.35 | $261.00 | $212.86 | $222.19 | -14.83% | 23,616,368 |
| Nov 2017 | $243.00 | $266.41 | $232.31 | $260.88 | +9.16% | 21,189,291 |
| Oct 2017 | $187.16 | $243.27 | $184.67 | $238.98 | +28.30% | 24,963,171 |
| Sep 2017 | $176.81 | $190.04 | $173.88 | $186.27 | +5.39% | 16,511,534 |
| Aug 2017 | $167.41 | $179.76 | $165.18 | $176.74 | +5.69% | 21,070,421 |
| Jul 2017 | $151.06 | $173.79 | $148.95 | $167.23 | +11.40% | 17,122,227 |
| Jun 2017 | $146.36 | $154.85 | $139.00 | $150.12 | +3.39% | 39,049,235 |
| May 2017 | $135.39 | $146.00 | $131.32 | $145.20 | +7.86% | 24,456,515 |
| Apr 2017 | $115.13 | $145.24 | $113.40 | $134.62 | +17.36% | 15,894,772 |
| Mar 2017 | $103.77 | $115.20 | $102.02 | $114.71 | +11.63% | 14,727,367 |
| Feb 2017 | $97.00 | $103.83 | $92.61 | $102.76 | +12.07% | 18,530,718 |
| Jan 2017 | $96.49 | $98.82 | $88.56 | $91.69 | -4.62% | 18,334,375 |
| Dec 2016 | $93.12 | $102.10 | $91.46 | $96.13 | +3.31% | 17,332,199 |
| Nov 2016 | $85.86 | $98.62 | $83.77 | $93.05 | +8.30% | 26,336,180 |
| Oct 2016 | $92.04 | $92.30 | $83.27 | $85.92 | -8.35% | 16,495,255 |
| Sep 2016 | $93.20 | $96.90 | $91.02 | $93.75 | +0.91% | 15,528,500 |
| Aug 2016 | $89.49 | $96.13 | $88.65 | $92.90 | +4.21% | 17,380,400 |
| Jul 2016 | $80.74 | $89.58 | $80.30 | $89.15 | +10.68% | 13,085,100 |
| Jun 2016 | $78.92 | $81.98 | $77.07 | $80.55 | +2.18% | 13,618,900 |
| May 2016 | $72.56 | $79.79 | $72.39 | $78.83 | +9.20% | 17,424,100 |
| Apr 2016 | $72.57 | $75.74 | $70.03 | $72.19 | -0.69% | 12,457,900 |
| Mar 2016 | $66.26 | $73.55 | $65.77 | $72.69 | +10.09% | 18,403,000 |
| Feb 2016 | $66.11 | $68.03 | $57.51 | $66.03 | -0.17% | 13,069,400 |
| Jan 2016 | $64.99 | $69.36 | $57.31 | $66.14 | +0.44% | 13,841,100 |
| Dec 2015 | $66.86 | $68.42 | $63.19 | $65.85 | -1.33% | 8,189,200 |
| Nov 2015 | $65.76 | $68.00 | $63.05 | $66.74 | +1.96% | 10,907,700 |
| Oct 2015 | $56.58 | $68.48 | $54.69 | $65.46 | +15.33% | 22,414,700 |
| Sep 2015 | $55.62 | $59.47 | $53.57 | $56.76 | +0.28% | 12,465,600 |
| Aug 2015 | $62.48 | $63.06 | $52.01 | $56.60 | -9.73% | 12,188,900 |
| Jul 2015 | $63.18 | $66.53 | $58.86 | $62.70 | -0.02% | 22,087,000 |
| Jun 2015 | $61.08 | $64.99 | $59.56 | $62.71 | +3.36% | 18,363,900 |
| May 2015 | $58.74 | $61.42 | $57.89 | $60.67 | +3.11% | 10,976,900 |
| Apr 2015 | $53.67 | $61.24 | $51.65 | $58.84 | +9.39% | 25,901,800 |
| Mar 2015 | $57.96 | $58.52 | $52.14 | $53.79 | -6.21% | 16,676,300 |
| Feb 2015 | $53.00 | $58.16 | $52.02 | $57.35 | +8.11% | 15,054,700 |
| Jan 2015 | $57.24 | $64.75 | $51.77 | $53.05 | -5.12% | 24,639,000 |
| Dec 2014 | $56.74 | $57.72 | $54.01 | $55.91 | -1.74% | 10,369,800 |
| Nov 2014 | $52.77 | $57.71 | $51.64 | $56.90 | +8.13% | 11,280,500 |
| Oct 2014 | $51.81 | $53.23 | $43.27 | $52.62 | +1.82% | 23,649,500 |
| Sep 2014 | $54.46 | $55.91 | $51.66 | $51.68 | -5.10% | 11,702,600 |
| Aug 2014 | $54.00 | $56.89 | $53.10 | $54.46 | +0.46% | 10,429,000 |
| Jul 2014 | $56.33 | $57.79 | $51.29 | $54.21 | -3.27% | 20,368,800 |
| Jun 2014 | $54.75 | $56.75 | $50.31 | $56.04 | +2.62% | 28,787,900 |
| May 2014 | $50.35 | $55.42 | $47.22 | $54.61 | +8.37% | 19,145,100 |
| Apr 2014 | $51.88 | $57.50 | $48.13 | $50.39 | -2.70% | 24,200,300 |
| Mar 2014 | $53.29 | $55.96 | $50.37 | $51.79 | -1.03% | 16,521,100 |
| Feb 2014 | $59.08 | $59.72 | $51.73 | $52.33 | -11.93% | 19,910,300 |
| Jan 2014 | $57.06 | $65.10 | $53.76 | $59.42 | +3.99% | 40,949,800 |
| Dec 2013 | $54.80 | $58.50 | $52.74 | $57.14 | +4.58% | 13,089,000 |
| Nov 2013 | $56.96 | $59.80 | $51.82 | $54.64 | -4.24% | 20,694,400 |
| Oct 2013 | $48.00 | $60.00 | $41.83 | $57.06 | +18.63% | 36,165,200 |
| Sep 2013 | $44.33 | $49.08 | $43.67 | $48.10 | +10.45% | 11,533,100 |
| Aug 2013 | $43.23 | $45.00 | $42.34 | $43.55 | +1.18% | 9,802,400 |
| Jul 2013 | $37.01 | $44.43 | $36.92 | $43.04 | +16.20% | 18,526,100 |
| Jun 2013 | $36.03 | $37.38 | $33.84 | $37.04 | +3.61% | 12,491,200 |
| May 2013 | $32.88 | $38.74 | $32.15 | $35.75 | +7.94% | 23,519,000 |
| Apr 2013 | $33.40 | $33.84 | $29.53 | $33.12 | -1.16% | 23,537,000 |
| Mar 2013 | $31.18 | $33.70 | $30.67 | $33.51 | +6.58% | 10,126,500 |
| Feb 2013 | $31.44 | $33.16 | $30.95 | $31.44 | +0.26% | 17,875,100 |
| Jan 2013 | $28.57 | $32.80 | $25.61 | $31.36 | +13.01% | 29,935,900 |
| Dec 2012 | $27.57 | $28.57 | $23.45 | $27.75 | +1.31% | 22,937,900 |
| Nov 2012 | $26.55 | $27.59 | $24.77 | $27.39 | +3.09% | 25,394,600 |
| Oct 2012 | $37.17 | $39.39 | $25.33 | $26.57 | -28.13% | 51,958,500 |
| Sep 2012 | $33.92 | $39.82 | $33.71 | $36.97 | +8.90% | 19,139,700 |
| Aug 2012 | $34.08 | $35.77 | $32.13 | $33.95 | -0.03% | 17,038,600 |
| Jul 2012 | $34.25 | $36.10 | $30.02 | $33.96 | +1.49% | 35,322,800 |
| Jun 2012 | $30.42 | $35.15 | $28.62 | $33.46 | +7.14% | 26,883,900 |
| May 2012 | $31.58 | $32.90 | $28.86 | $31.23 | -1.51% | 19,273,300 |
| Apr 2012 | $27.40 | $34.29 | $26.06 | $31.71 | +15.10% | 19,099,600 |
| Mar 2012 | $25.94 | $28.69 | $25.08 | $27.55 | +7.58% | 11,810,300 |
| Feb 2012 | $23.58 | $27.75 | $23.40 | $25.61 | +8.70% | 14,079,800 |
| Jan 2012 | $24.24 | $25.75 | $22.39 | $23.56 | -0.72% | 16,329,600 |
| Dec 2011 | $24.37 | $25.58 | $23.13 | $23.73 | -3.14% | 13,581,300 |
| Nov 2011 | $21.88 | $24.99 | $21.20 | $24.50 | +6.38% | 13,670,800 |
| Oct 2011 | $15.00 | $24.00 | $14.25 | $23.03 | +51.81% | 17,281,900 |
| Sep 2011 | $19.15 | $19.35 | $14.65 | $15.17 | -20.58% | 11,142,100 |
| Aug 2011 | $22.26 | $22.53 | $16.24 | $19.10 | -13.14% | 18,688,200 |
| Jul 2011 | $22.80 | $24.16 | $21.52 | $21.99 | -3.55% | 8,176,500 |
| Jun 2011 | $24.42 | $24.76 | $21.65 | $22.80 | -6.94% | 13,789,500 |
| May 2011 | $24.14 | $24.80 | $22.36 | $24.50 | +1.49% | 10,979,600 |
| Apr 2011 | $20.58 | $25.94 | $20.41 | $24.14 | +17.87% | 14,684,700 |
| Mar 2011 | $20.83 | $22.05 | $19.56 | $20.48 | -1.77% | 13,200,700 |
| Feb 2011 | $20.51 | $22.24 | $19.10 | $20.85 | +0.10% | 17,491,300 |
| Jan 2011 | $19.75 | $21.20 | $19.23 | $20.83 | +6.60% | 16,798,000 |
| Dec 2010 | $17.84 | $20.65 | $17.18 | $19.54 | +11.72% | 12,384,000 |
| Nov 2010 | $17.02 | $18.67 | $16.65 | $17.49 | +2.76% | 17,453,700 |
| Oct 2010 | $19.77 | $21.40 | $16.25 | $17.02 | -13.07% | 37,360,400 |
| Sep 2010 | $16.24 | $19.95 | $16.17 | $19.58 | +22.45% | 12,554,600 |
| Aug 2010 | $17.47 | $18.28 | $15.71 | $15.99 | -7.84% | 12,648,000 |
| Jul 2010 | $14.89 | $18.50 | $13.90 | $17.35 | +16.68% | 20,981,900 |
| Jun 2010 | $14.85 | $15.37 | $13.18 | $14.87 | -0.34% | 23,995,300 |
| May 2010 | $17.00 | $17.91 | $14.73 | $14.92 | -12.24% | 25,102,100 |
| Apr 2010 | $19.44 | $20.56 | $16.42 | $17.00 | -12.10% | 36,040,300 |
| Mar 2010 | $18.16 | $20.00 | $18.08 | $19.34 | +6.85% | 10,783,100 |
| Feb 2010 | $18.73 | $18.75 | $16.93 | $18.10 | -3.47% | 10,057,900 |
| Jan 2010 | $18.05 | $19.25 | $16.11 | $18.75 | +5.22% | 12,681,100 |
| Dec 2009 | $16.52 | $18.23 | $16.50 | $17.82 | +8.92% | 9,443,100 |
| Nov 2009 | $15.87 | $17.39 | $15.38 | $16.36 | +4.07% | 9,797,000 |
| Oct 2009 | $14.68 | $18.85 | $14.18 | $15.72 | +10.55% | 20,867,100 |
| Sep 2009 | $13.26 | $14.91 | $12.70 | $14.22 | +6.12% | 9,651,900 |
| Aug 2009 | $10.88 | $14.00 | $9.75 | $13.40 | +22.82% | 22,095,200 |
| Jul 2009 | $10.72 | $12.07 | $9.15 | $10.91 | +2.92% | 18,147,700 |
| Jun 2009 | $12.08 | $12.91 | $9.43 | $10.60 | -10.40% | 22,054,500 |
| May 2009 | $12.57 | $12.71 | $11.07 | $11.83 | -4.67% | 10,430,500 |
| Apr 2009 | $7.83 | $12.83 | $7.62 | $12.41 | +56.49% | 18,300,900 |
| Mar 2009 | $6.81 | $8.37 | $6.10 | $7.93 | +15.77% | 11,709,410 |
| Feb 2009 | $7.71 | $9.19 | $6.85 | $6.85 | -13.07% | 9,778,000 |
| Jan 2009 | $8.52 | $9.67 | $7.48 | $7.88 | -9.94% | 12,237,500 |
| Dec 2008 | $6.79 | $8.81 | $6.63 | $8.75 | +25.00% | 12,507,600 |
| Nov 2008 | $6.90 | $7.51 | $5.67 | $7.00 | +1.01% | 11,861,100 |
| Oct 2008 | $10.75 | $10.88 | $4.88 | $6.93 | -36.01% | 25,855,800 |
| Sep 2008 | $13.18 | $13.74 | $10.45 | $10.83 | -16.95% | 18,052,000 |
| Aug 2008 | $9.94 | $13.19 | $9.91 | $13.04 | +30.27% | 15,733,300 |
| Jul 2008 | $10.38 | $12.24 | $9.02 | $10.01 | -4.58% | 24,632,200 |
| Jun 2008 | $13.20 | $13.45 | $10.47 | $10.49 | -20.35% | 16,044,400 |
| May 2008 | $12.17 | $13.42 | $11.98 | $13.17 | +7.25% | 17,764,800 |
| Apr 2008 | $11.23 | $12.79 | $9.65 | $12.28 | +10.53% | 27,405,500 |
| Mar 2008 | $12.38 | $12.90 | $10.34 | $11.11 | -10.04% | 14,429,700 |
| Feb 2008 | $11.59 | $13.62 | $11.57 | $12.35 | +4.84% | 26,020,800 |
| Jan 2008 | $16.68 | $17.22 | $10.80 | $11.78 | -29.38% | 42,594,000 |
| Dec 2007 | $16.82 | $19.88 | $16.24 | $16.68 | -1.24% | 12,629,100 |
| Nov 2007 | $20.48 | $20.69 | $14.62 | $16.89 | -18.41% | 24,770,800 |
| Oct 2007 | $25.22 | $29.30 | $18.00 | $20.70 | -18.28% | 41,610,800 |
| Sep 2007 | $22.65 | $26.24 | $22.60 | $25.33 | +11.44% | 16,158,200 |
| Aug 2007 | $25.96 | $28.34 | $21.55 | $22.73 | -12.91% | 34,055,100 |
| Jul 2007 | $24.23 | $29.71 | $24.09 | $26.10 | +8.03% | 24,039,700 |
| Jun 2007 | $22.99 | $25.29 | $21.79 | $24.16 | +6.01% | 18,722,400 |
| May 2007 | $22.70 | $24.19 | $21.99 | $22.79 | +0.57% | 18,799,900 |
| Apr 2007 | $15.88 | $24.28 | $15.45 | $22.66 | +42.88% | 25,872,600 |
| Mar 2007 | $16.08 | $16.97 | $15.72 | $15.86 | -3.41% | 12,944,800 |
| Feb 2007 | $16.03 | $17.95 | $15.90 | $16.42 | -0.85% | 15,797,300 |
| Jan 2007 | $13.97 | $17.01 | $13.07 | $16.56 | +18.54% | 20,594,400 |
| Dec 2006 | $13.05 | $14.34 | $12.78 | $13.97 | +6.48% | 13,489,900 |
| Nov 2006 | $13.78 | $13.85 | $12.55 | $13.12 | -5.34% | 13,892,400 |
| Oct 2006 | $11.30 | $15.33 | $11.00 | $13.86 | +21.79% | 36,899,700 |
| Sep 2006 | $6.26 | $13.34 | $6.06 | $11.38 | +82.08% | 36,251,500 |
| Aug 2006 | $6.61 | $6.88 | $5.62 | $6.25 | -7.54% | 9,568,500 |
| Jul 2006 | $7.42 | $7.68 | $6.15 | $6.76 | -8.53% | 7,092,200 |
| Jun 2006 | $7.43 | $8.15 | $7.02 | $7.39 | 0.00% | 9,540,500 |
| May 2006 | $8.79 | $9.40 | $6.98 | $7.39 | -15.93% | 10,104,600 |
| Apr 2006 | $9.15 | $9.75 | $8.20 | $8.79 | -4.14% | 11,249,900 |
| Mar 2006 | $8.11 | $9.45 | $7.97 | $9.17 | +12.38% | 11,808,000 |
| Feb 2006 | $8.06 | $8.56 | $7.75 | $8.16 | -0.24% | 12,355,700 |
| Jan 2006 | $6.35 | $8.69 | $5.96 | $8.18 | +26.43% | 22,400,300 |
| Dec 2005 | $6.92 | $7.13 | $6.27 | $6.47 | -6.50% | 10,094,000 |
| Nov 2005 | $7.30 | $7.30 | $6.20 | $6.92 | -6.23% | 13,681,100 |
| Oct 2005 | $6.72 | $7.69 | $6.31 | $7.38 | +9.82% | 14,426,400 |
| Sep 2005 | $6.83 | $7.44 | $6.20 | $6.72 | -1.32% | 10,208,600 |
| Aug 2005 | $6.53 | $6.96 | $6.06 | $6.81 | +4.45% | 17,164,700 |
| Jul 2005 | $7.35 | $8.41 | $5.63 | $6.52 | -11.53% | 18,686,600 |
| Jun 2005 | $7.30 | $7.76 | $6.92 | $7.37 | +1.38% | 10,626,000 |
| May 2005 | $8.42 | $8.90 | $6.96 | $7.27 | -13.66% | 18,094,100 |
| Apr 2005 | $6.26 | $8.84 | $5.75 | $8.42 | +34.94% | 38,179,900 |
| Mar 2005 | $7.57 | $8.01 | $5.84 | $6.24 | -17.57% | 19,672,500 |
| Feb 2005 | $8.66 | $8.89 | $7.34 | $7.57 | -12.59% | 19,786,900 |
| Jan 2005 | $10.87 | $10.87 | $7.78 | $8.66 | -19.44% | 25,401,200 |
| Dec 2004 | $11.06 | $12.00 | $10.25 | $10.75 | +1.70% | 15,754,000 |
| Nov 2004 | $10.53 | $11.49 | $10.10 | $10.57 | +1.83% | 16,938,000 |
| Oct 2004 | $15.43 | $16.34 | $8.85 | $10.38 | -32.07% | 33,137,400 |
| Sep 2004 | $15.20 | $16.75 | $14.54 | $15.28 | -0.26% | 8,828,400 |
| Aug 2004 | $17.34 | $17.35 | $13.60 | $15.32 | -10.83% | 12,438,700 |
| Jul 2004 | $18.91 | $19.15 | $15.23 | $17.18 | -9.58% | 17,804,300 |
| Jun 2004 | $19.00 | $19.30 | $17.30 | $19.00 | -0.31% | 11,333,000 |
| May 2004 | $17.67 | $20.19 | $17.25 | $19.06 | +9.79% | 8,240,900 |
| Apr 2004 | $19.22 | $22.81 | $17.32 | $17.36 | -8.68% | 11,377,600 |
| Mar 2004 | $19.62 | $20.23 | $17.45 | $19.01 | -3.36% | 7,151,500 |
| Feb 2004 | $21.00 | $21.80 | $19.12 | $19.67 | -5.20% | 9,179,000 |
| Jan 2004 | $16.74 | $21.90 | $16.47 | $20.75 | +25.68% | 14,226,400 |
| Dec 2003 | $18.04 | $18.97 | $15.52 | $16.51 | -7.97% | 8,255,100 |
| Nov 2003 | $15.22 | $18.01 | $15.10 | $17.94 | +16.42% | 11,978,300 |
| Oct 2003 | $12.50 | $16.27 | $12.49 | $15.41 | +23.18% | 12,589,100 |
| Sep 2003 | $11.00 | $14.25 | $10.85 | $12.51 | +13.01% | 7,122,200 |
| Aug 2003 | $12.84 | $13.00 | $10.15 | $11.07 | -14.85% | 6,526,600 |
| Jul 2003 | $13.04 | $14.77 | $9.94 | $13.00 | +3.17% | 11,289,400 |
| Jun 2003 | $10.17 | $12.69 | $9.25 | $12.60 | +24.38% | 8,403,500 |
| May 2003 | $7.66 | $11.40 | $6.80 | $10.13 | +34.71% | 10,898,000 |
| Apr 2003 | $6.13 | $7.66 | $5.53 | $7.52 | +24.30% | 8,055,100 |
| Mar 2003 | $4.65 | $6.24 | $4.10 | $6.05 | +28.45% | 5,050,500 |
| Feb 2003 | $3.30 | $4.99 | $3.11 | $4.71 | +42.73% | 4,309,400 |
| Jan 2003 | $2.95 | $3.35 | $2.54 | $3.30 | +19.57% | 2,232,000 |
| Dec 2002 | $3.49 | $3.51 | $2.38 | $2.76 | -23.12% | 3,148,300 |
| Nov 2002 | $2.02 | $3.62 | $1.26 | $3.59 | +102.82% | 7,927,800 |
| Oct 2002 | $2.80 | $3.08 | $1.66 | $1.77 | -35.64% | 2,765,000 |
| Sep 2002 | $2.95 | $3.40 | $2.52 | $2.75 | -8.33% | 2,081,300 |
| Aug 2002 | $2.35 | $3.74 | $2.18 | $3.00 | +27.66% | 1,872,800 |
| Jul 2002 | $3.92 | $3.92 | $1.53 | $2.35 | -40.05% | 5,747,800 |
| Jun 2002 | $3.86 | $4.15 | $3.09 | $3.92 | +1.82% | 5,225,100 |
| May 2002 | $3.83 | $4.08 | $3.51 | $3.85 | 0.00% | 2,635,800 |
| Apr 2002 | $5.34 | $5.52 | $3.33 | $3.85 | -27.36% | 4,833,000 |
| Mar 2002 | $4.25 | $5.40 | $4.03 | $5.30 | +24.71% | 3,407,000 |
| Feb 2002 | $4.89 | $5.58 | $4.10 | $4.25 | -12.91% | 3,194,500 |
| Jan 2002 | $4.50 | $6.25 | $4.00 | $4.88 | +8.44% | 9,522,800 |
| Dec 2001 | $4.00 | $5.16 | $3.60 | $4.50 | +12.50% | 2,439,200 |
| Nov 2001 | $4.35 | $5.50 | $2.95 | $4.00 | -8.26% | 4,217,600 |
| Oct 2001 | $2.43 | $5.79 | $2.14 | $4.36 | +100.00% | 7,439,200 |
| Sep 2001 | $6.73 | $7.25 | $2.18 | $2.18 | -66.97% | 7,072,000 |
| Aug 2001 | $7.50 | $8.25 | $6.48 | $6.60 | -11.53% | 4,726,300 |
| Jul 2001 | $8.02 | $8.10 | $6.50 | $7.46 | -4.85% | 6,629,800 |
| Jun 2001 | $10.00 | $10.53 | $7.60 | $7.84 | -21.60% | 5,532,100 |
| May 2001 | $9.00 | $12.45 | $7.90 | $10.00 | +14.29% | 7,957,700 |
| Apr 2001 | $7.30 | $9.40 | $5.35 | $8.75 | +20.69% | 3,155,600 |
| Mar 2001 | $7.48 | $10.50 | $6.13 | $7.25 | -3.33% | 7,244,800 |
| Feb 2001 | $13.13 | $14.56 | $7.13 | $7.50 | -44.44% | 12,337,000 |
| Jan 2001 | $18.13 | $18.19 | $13.44 | $13.50 | – | 2,025,000 |
Seasonality
ALGN return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average | 3.3% | 4.2% | -3.1% | 2.6% | 1.9% | 2.3% | 0.3% | -0.4% | -3.7% | -0.4% | 7.9% | 2.9% |
| Months up | 5 of 10 | 8 of 10 | 4 of 10 | 6 of 10 | 4 of 10 | 6 of 10 | 7 of 10 | 6 of 10 | 4 of 10 | 5 of 10 | 8 of 9 | 6 of 9 |
| 2026 | 4.4% | 16.6% | -9.8% | 2.7% | -0.6% | -3.6% | 0.3% | -5.5% | -9.0% | 3.1% | ||
| 2025 | 5.1% | -14.6% | -15.1% | 9.1% | 4.4% | 4.6% | -31.9% | 10.0% | -11.8% | 10.1% | 6.8% | 6.1% |
| 2024 | -2.4% | 13.1% | 8.4% | -13.9% | -8.9% | -6.1% | -4.0% | 2.3% | 7.2% | -19.4% | 13.5% | -10.4% |
| 2023 | 27.9% | 14.7% | 8.0% | -2.6% | -13.1% | 25.1% | 6.9% | -2.1% | -17.5% | -39.5% | 15.8% | 28.2% |
| 2022 | -24.7% | 3.3% | -14.8% | -33.5% | -4.2% | -14.8% | 18.7% | -13.3% | -15.0% | -6.2% | 1.2% | 7.2% |
| 2021 | -1.7% | 7.9% | -4.5% | 10.0% | -0.9% | 3.5% | 13.9% | 1.9% | -6.1% | -6.2% | -2.1% | 7.5% |
| 2020 | -7.9% | -15.1% | -20.3% | 23.5% | 14.3% | 11.7% | 7.1% | 1.1% | 10.2% | 30.2% | 13.0% | 11.0% |
| 2019 | 18.9% | 4.0% | 9.8% | 14.2% | -12.4% | -3.7% | -23.6% | -12.4% | -1.2% | 39.4% | 9.9% | 0.6% |
| 2018 | 17.9% | 0.2% | -4.3% | -0.5% | 32.9% | 3.1% | 4.2% | 8.4% | 1.2% | -43.5% | 3.9% | -8.9% |
| 2017 | -4.6% | 12.1% | 11.6% | 17.4% | 7.9% | 3.4% | 11.4% | 5.7% | 5.4% | 28.3% | 9.2% | -14.8% |