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 trading day, 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
| Date | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 30, 2026 | $153.98 | $155.54 | $147.52 | $149.89 | -2.49% | 1,119,666 |
| Oct 29, 2026 | $152.98 | $156.50 | $148.00 | $153.71 | +0.06% | 2,007,595 |
| Oct 28, 2026 | $151.22 | $155.48 | $151.17 | $153.62 | +1.10% | 1,301,280 |
| Oct 27, 2026 | $152.03 | $152.70 | $150.77 | $151.95 | -0.20% | 681,784 |
| Oct 26, 2026 | $153.49 | $154.92 | $150.76 | $152.26 | -1.46% | 942,203 |
| Oct 23, 2026 | $154.79 | $155.80 | $152.70 | $154.51 | -0.64% | 911,613 |
| Oct 22, 2026 | $151.50 | $155.94 | $151.39 | $155.51 | +2.74% | 1,160,229 |
| Oct 21, 2026 | $150.73 | $153.30 | $149.52 | $151.37 | +0.58% | 905,223 |
| Oct 20, 2026 | $148.60 | $150.70 | $147.86 | $150.50 | +1.00% | 912,754 |
| Oct 19, 2026 | $147.36 | $149.88 | $145.40 | $149.00 | +1.15% | 771,679 |
| Oct 16, 2026 | $150.37 | $152.27 | $146.14 | $147.31 | -1.36% | 952,980 |
| Oct 15, 2026 | $143.92 | $149.78 | $142.45 | $149.34 | +3.39% | 1,140,835 |
| Oct 14, 2026 | $143.54 | $144.60 | $141.86 | $144.44 | +0.63% | 718,424 |
| Oct 13, 2026 | $141.01 | $143.65 | $139.81 | $143.54 | +2.22% | 997,879 |
| Oct 12, 2026 | $143.23 | $144.11 | $140.33 | $140.42 | -1.60% | 849,889 |
| Oct 9, 2026 | $141.00 | $142.86 | $140.10 | $142.71 | +1.19% | 1,079,154 |
| Oct 8, 2026 | $138.59 | $141.12 | $138.05 | $141.03 | +0.83% | 1,344,517 |
| Oct 7, 2026 | $140.46 | $141.00 | $138.95 | $139.87 | -1.12% | 678,976 |
| Oct 6, 2026 | $141.96 | $143.64 | $141.14 | $141.45 | +0.57% | 1,021,516 |
| Oct 5, 2026 | $140.07 | $142.35 | $138.36 | $140.65 | -2.15% | 1,680,197 |
| Oct 2, 2026 | $147.09 | $147.09 | $143.23 | $143.74 | -1.10% | 549,998 |
| Oct 1, 2026 | $145.00 | $146.23 | $143.23 | $145.35 | -0.00% | 619,792 |
| Sep 30, 2026 | $144.61 | $146.68 | $142.83 | $145.35 | +0.93% | 917,822 |
| Sep 29, 2026 | $145.00 | $145.93 | $142.24 | $144.01 | -0.68% | 937,278 |
| Sep 28, 2026 | $145.00 | $146.20 | $143.33 | $145.00 | -1.21% | 886,503 |
| Sep 25, 2026 | $145.57 | $148.17 | $144.20 | $146.78 | +0.79% | 829,614 |
| Sep 24, 2026 | $148.65 | $149.22 | $145.27 | $145.63 | -1.72% | 785,810 |
| Sep 23, 2026 | $152.50 | $153.40 | $147.07 | $148.17 | -3.34% | 1,327,020 |
| Sep 22, 2026 | $149.17 | $154.10 | $147.62 | $153.29 | +4.36% | 967,001 |
| Sep 21, 2026 | $147.97 | $148.37 | $145.55 | $146.88 | -0.49% | 975,815 |
| Sep 18, 2026 | $149.52 | $150.78 | $146.20 | $147.61 | -1.40% | 1,498,331 |
| Sep 17, 2026 | $151.21 | $152.11 | $148.98 | $149.71 | -0.49% | 796,007 |
| Sep 16, 2026 | $148.18 | $152.46 | $147.56 | $150.45 | +2.35% | 946,514 |
| Sep 15, 2026 | $151.46 | $152.49 | $146.82 | $147.00 | -3.92% | 1,025,227 |
| Sep 14, 2026 | $151.29 | $153.86 | $150.67 | $153.00 | +1.45% | 718,589 |
| Sep 11, 2026 | $153.30 | $153.87 | $149.49 | $150.82 | +0.07% | 619,849 |
| Sep 10, 2026 | $150.55 | $151.22 | $148.50 | $150.72 | -1.44% | 836,079 |
| Sep 9, 2026 | $152.54 | $153.88 | $151.32 | $152.92 | -0.37% | 1,107,294 |
| Sep 8, 2026 | $156.13 | $156.13 | $153.14 | $153.49 | -3.24% | 807,205 |
| Sep 4, 2026 | $157.67 | $160.50 | $155.24 | $158.64 | -0.76% | 990,518 |
| Sep 3, 2026 | $159.65 | $162.92 | $155.84 | $159.86 | +0.44% | 694,145 |
| Sep 2, 2026 | $155.50 | $160.85 | $155.50 | $159.15 | +2.70% | 687,060 |
| Sep 1, 2026 | $158.21 | $159.33 | $153.98 | $154.96 | -3.02% | 576,464 |
| Aug 31, 2026 | $155.36 | $160.48 | $154.50 | $159.79 | +1.40% | 1,288,370 |
| Aug 28, 2026 | $158.51 | $159.97 | $157.21 | $157.58 | -0.79% | 954,649 |
| Aug 27, 2026 | $157.80 | $162.09 | $157.77 | $158.84 | -0.19% | 801,290 |
| Aug 26, 2026 | $158.85 | $161.66 | $158.53 | $159.14 | -0.29% | 653,655 |
| Aug 25, 2026 | $158.85 | $160.69 | $157.27 | $159.61 | -0.02% | 811,643 |
| Aug 24, 2026 | $162.25 | $162.80 | $159.07 | $159.64 | -1.79% | 762,047 |
| Aug 21, 2026 | $159.74 | $162.77 | $157.39 | $162.55 | +2.27% | 1,075,309 |
| Aug 20, 2026 | $162.52 | $164.64 | $157.34 | $158.94 | -2.51% | 836,759 |
| Aug 19, 2026 | $170.02 | $173.67 | $162.62 | $163.04 | -2.90% | 928,987 |
| Aug 18, 2026 | $171.57 | $172.37 | $167.78 | $167.91 | -1.90% | 744,753 |
| Aug 17, 2026 | $179.05 | $181.33 | $170.16 | $171.16 | -5.60% | 916,811 |
| Aug 14, 2026 | $176.73 | $182.20 | $176.72 | $181.31 | +2.90% | 959,982 |
| Aug 13, 2026 | $175.61 | $176.49 | $172.85 | $176.20 | +1.26% | 541,591 |
| Aug 12, 2026 | $172.96 | $174.74 | $169.46 | $174.02 | +0.61% | 658,421 |
| Aug 11, 2026 | $174.67 | $178.46 | $172.80 | $172.96 | -1.75% | 550,301 |
| Aug 10, 2026 | $173.02 | $176.49 | $172.70 | $176.04 | +1.37% | 643,614 |
| Aug 7, 2026 | $169.15 | $173.84 | $165.00 | $173.66 | +2.71% | 870,104 |
| Aug 6, 2026 | $173.43 | $174.09 | $168.67 | $169.08 | -3.29% | 655,763 |
| Aug 5, 2026 | $170.89 | $175.54 | $170.89 | $174.83 | +0.90% | 1,020,302 |
| Aug 4, 2026 | $172.10 | $174.33 | $170.50 | $173.27 | +0.22% | 1,116,124 |
| Aug 3, 2026 | $171.41 | $175.48 | $171.00 | $172.89 | +2.21% | 998,780 |
| Jul 31, 2026 | $170.81 | $171.75 | $164.74 | $169.16 | -2.45% | 1,608,280 |
| Jul 30, 2026 | $180.72 | $187.96 | $171.04 | $173.41 | -3.70% | 1,534,305 |
| Jul 29, 2026 | $175.60 | $184.00 | $174.41 | $180.08 | +2.55% | 1,658,921 |
| Jul 28, 2026 | $169.93 | $175.85 | $169.93 | $175.60 | +4.49% | 914,113 |
| Jul 27, 2026 | $165.43 | $172.10 | $164.75 | $168.05 | +0.62% | 1,032,779 |
| Jul 24, 2026 | $168.50 | $170.51 | $165.97 | $167.02 | -0.73% | 845,955 |
| Jul 23, 2026 | $169.28 | $171.31 | $165.67 | $168.24 | -2.45% | 820,952 |
| Jul 22, 2026 | $178.78 | $178.78 | $172.21 | $172.46 | -2.84% | 512,038 |
| Jul 21, 2026 | $175.05 | $179.30 | $173.01 | $177.50 | +1.40% | 683,055 |
| Jul 20, 2026 | $177.08 | $177.99 | $174.05 | $175.05 | -0.97% | 1,060,214 |
| Jul 17, 2026 | $176.19 | $181.17 | $174.93 | $176.76 | -0.92% | 828,661 |
| Jul 16, 2026 | $181.25 | $182.93 | $176.32 | $178.41 | -1.57% | 1,378,139 |
| Jul 15, 2026 | $178.23 | $184.60 | $178.23 | $181.26 | +1.57% | 604,850 |
| Jul 14, 2026 | $181.54 | $182.44 | $175.14 | $178.46 | -1.18% | 417,755 |
| Jul 13, 2026 | $180.14 | $184.62 | $179.78 | $180.59 | +0.64% | 486,815 |
| Jul 10, 2026 | $179.61 | $181.22 | $175.00 | $179.45 | +0.72% | 630,816 |
| Jul 9, 2026 | $174.42 | $180.29 | $173.70 | $178.17 | +2.00% | 1,086,065 |
| Jul 8, 2026 | $182.55 | $185.07 | $173.97 | $174.68 | -5.69% | 1,018,657 |
| Jul 7, 2026 | $189.61 | $190.97 | $183.79 | $185.22 | -1.68% | 913,539 |
| Jul 6, 2026 | $183.72 | $188.60 | $179.37 | $188.39 | +2.10% | 1,104,682 |
| Jul 2, 2026 | $183.11 | $186.52 | $181.53 | $184.52 | +1.67% | 1,354,100 |
| Jul 1, 2026 | $168.66 | $182.84 | $166.91 | $181.49 | +7.61% | 1,506,090 |
| Jun 30, 2026 | $172.80 | $173.43 | $166.27 | $168.66 | -2.75% | 1,372,596 |
| Jun 29, 2026 | $177.62 | $178.34 | $170.05 | $173.43 | -2.80% | 973,306 |
| Jun 26, 2026 | $174.03 | $179.35 | $174.03 | $178.43 | +1.55% | 1,668,669 |
| Jun 25, 2026 | $172.99 | $176.70 | $171.54 | $175.71 | +2.81% | 850,479 |
| Jun 24, 2026 | $170.34 | $174.37 | $165.50 | $170.90 | +1.43% | 1,502,833 |
| Jun 23, 2026 | $172.67 | $174.67 | $168.29 | $168.49 | -3.03% | 1,112,522 |
| Jun 22, 2026 | $178.50 | $180.55 | $173.48 | $173.76 | -4.57% | 1,277,764 |
| Jun 18, 2026 | $176.70 | $183.03 | $173.56 | $182.08 | +4.93% | 1,949,707 |
| Jun 17, 2026 | $179.36 | $185.00 | $172.16 | $173.53 | -3.34% | 843,702 |
| Jun 16, 2026 | $178.27 | $181.22 | $177.75 | $179.52 | +0.71% | 635,278 |
| Jun 15, 2026 | $177.88 | $182.59 | $177.21 | $178.26 | +1.96% | 1,091,921 |
| Jun 12, 2026 | $176.51 | $177.49 | $172.43 | $174.84 | -0.95% | 574,466 |
| Jun 11, 2026 | $170.50 | $177.88 | $169.30 | $176.51 | +3.52% | 1,029,596 |
| Jun 10, 2026 | $177.73 | $179.21 | $169.99 | $170.50 | -4.27% | 1,155,323 |
| Jun 9, 2026 | $174.51 | $179.85 | $172.59 | $178.10 | +3.52% | 1,044,473 |
| Jun 8, 2026 | $167.55 | $173.29 | $167.08 | $172.05 | +2.57% | 1,010,877 |
| Jun 5, 2026 | $168.29 | $171.00 | $166.40 | $167.74 | -0.33% | 494,463 |
| Jun 4, 2026 | $164.90 | $168.42 | $164.07 | $168.29 | +4.07% | 979,569 |
| Jun 3, 2026 | $166.27 | $167.13 | $160.70 | $161.71 | -2.99% | 1,068,946 |
| Jun 2, 2026 | $169.77 | $173.47 | $165.99 | $166.69 | -1.81% | 902,269 |
| Jun 1, 2026 | $172.40 | $173.40 | $169.30 | $169.77 | -2.96% | 856,901 |
| May 29, 2026 | $173.79 | $177.66 | $171.92 | $174.95 | +0.98% | 1,155,008 |
| May 28, 2026 | $162.88 | $173.78 | $160.33 | $173.25 | +6.37% | 1,592,367 |
| May 27, 2026 | $164.80 | $167.50 | $161.43 | $162.88 | -0.41% | 1,553,536 |
| May 26, 2026 | $164.97 | $166.00 | $162.32 | $163.55 | -0.04% | 873,542 |
| May 22, 2026 | $162.90 | $165.48 | $161.17 | $163.61 | +0.35% | 844,547 |
| May 21, 2026 | $162.15 | $165.01 | $160.43 | $163.04 | -0.21% | 1,163,651 |
| May 20, 2026 | $155.16 | $163.95 | $151.58 | $163.38 | +5.30% | 1,518,298 |
| May 19, 2026 | $158.59 | $159.69 | $154.20 | $155.16 | -2.28% | 1,403,630 |
| May 18, 2026 | $158.02 | $161.22 | $155.90 | $158.78 | +0.97% | 982,749 |
| May 15, 2026 | $159.55 | $161.00 | $156.99 | $157.25 | -2.04% | 923,640 |
| May 14, 2026 | $161.40 | $163.59 | $159.85 | $160.53 | -0.75% | 633,677 |
| May 13, 2026 | $165.42 | $165.77 | $160.88 | $161.75 | -2.44% | 636,447 |
| May 12, 2026 | $164.78 | $167.65 | $163.60 | $165.79 | +0.72% | 630,683 |
| May 11, 2026 | $168.88 | $169.66 | $162.72 | $164.61 | -2.47% | 1,129,357 |
| May 8, 2026 | $168.39 | $169.18 | $163.29 | $168.78 | +0.23% | 835,856 |
| May 7, 2026 | $174.96 | $176.46 | $167.82 | $168.39 | -3.19% | 753,268 |
| May 6, 2026 | $169.47 | $174.96 | $168.73 | $173.94 | +3.10% | 768,463 |
| May 5, 2026 | $171.26 | $172.62 | $167.77 | $168.71 | -1.84% | 751,233 |
| May 4, 2026 | $175.73 | $178.12 | $171.27 | $171.88 | -3.93% | 703,559 |
| May 1, 2026 | $177.16 | $179.37 | $174.98 | $178.91 | +1.65% | 840,335 |
| Apr 30, 2026 | $177.00 | $177.11 | $167.46 | $176.01 | -1.34% | 1,932,702 |
| Apr 29, 2026 | $177.28 | $180.42 | $176.08 | $178.40 | +0.63% | 1,378,995 |
| Apr 28, 2026 | $183.76 | $183.76 | $174.62 | $177.28 | -4.02% | 1,705,816 |
| Apr 27, 2026 | $189.71 | $192.45 | $183.81 | $184.70 | -2.59% | 1,484,606 |
| Apr 24, 2026 | $190.96 | $191.91 | $187.01 | $189.61 | -0.56% | 738,480 |
| Apr 23, 2026 | $194.52 | $196.13 | $187.58 | $190.67 | -2.74% | 1,024,648 |
| Apr 22, 2026 | $198.12 | $198.12 | $193.67 | $196.05 | +0.44% | 922,511 |
| Apr 21, 2026 | $193.40 | $200.44 | $192.35 | $195.20 | +1.85% | 1,467,410 |
| Apr 20, 2026 | $187.35 | $193.00 | $187.05 | $191.66 | +0.84% | 1,362,799 |
| Apr 17, 2026 | $188.87 | $194.67 | $188.23 | $190.07 | +2.73% | 1,025,023 |
| Apr 16, 2026 | $186.72 | $189.00 | $184.48 | $185.02 | -0.81% | 645,913 |
| Apr 15, 2026 | $187.32 | $187.99 | $185.34 | $186.53 | +1.00% | 785,953 |
| Apr 14, 2026 | $183.10 | $187.99 | $182.63 | $184.69 | +2.23% | 879,308 |
| Apr 13, 2026 | $171.74 | $181.28 | $170.18 | $180.67 | +4.35% | 1,031,739 |
| Apr 10, 2026 | $175.27 | $178.23 | $172.34 | $173.14 | -0.80% | 784,907 |
| Apr 9, 2026 | $173.21 | $175.65 | $170.50 | $174.53 | -1.30% | 970,098 |
| Apr 8, 2026 | $177.62 | $185.00 | $176.00 | $176.83 | +5.97% | 927,387 |
| Apr 7, 2026 | $171.10 | $171.15 | $165.40 | $166.87 | -2.91% | 934,537 |
| Apr 6, 2026 | $170.07 | $172.73 | $169.13 | $171.87 | +0.74% | 501,640 |
| Apr 2, 2026 | $168.52 | $175.15 | $164.00 | $170.60 | -1.23% | 1,081,611 |
| Apr 1, 2026 | $172.61 | $178.17 | $171.74 | $172.73 | +0.76% | 872,306 |
| Mar 31, 2026 | $167.50 | $173.12 | $166.06 | $171.43 | +3.11% | 791,465 |
| Mar 30, 2026 | $168.25 | $168.25 | $164.73 | $166.26 | -0.07% | 1,056,051 |
| Mar 27, 2026 | $175.51 | $176.83 | $163.78 | $166.38 | -6.17% | 1,294,114 |
| Mar 26, 2026 | $177.66 | $182.97 | $176.73 | $177.33 | -1.63% | 652,149 |
| Mar 25, 2026 | $180.78 | $183.34 | $176.15 | $180.27 | +0.52% | 746,788 |
| Mar 24, 2026 | $177.92 | $181.45 | $175.38 | $179.34 | -0.84% | 985,771 |
| Mar 23, 2026 | $178.00 | $182.16 | $176.36 | $180.86 | +4.43% | 1,442,494 |
| Mar 20, 2026 | $175.97 | $178.74 | $171.27 | $173.18 | -1.74% | 2,108,464 |
| Mar 19, 2026 | $180.00 | $180.62 | $175.04 | $176.25 | +2.23% | 2,322,111 |
| Mar 18, 2026 | $172.97 | $175.43 | $170.50 | $172.41 | -2.11% | 1,729,426 |
| Mar 17, 2026 | $174.19 | $179.06 | $174.19 | $176.12 | +3.94% | 1,340,718 |
| Mar 16, 2026 | $166.60 | $169.57 | $164.05 | $169.45 | +3.18% | 1,515,017 |
| Mar 13, 2026 | $167.43 | $168.23 | $162.27 | $164.23 | -1.61% | 1,886,450 |
| Mar 12, 2026 | $172.80 | $173.76 | $165.73 | $166.92 | -4.51% | 1,810,000 |
| Mar 11, 2026 | $168.53 | $177.45 | $168.31 | $174.81 | +3.18% | 1,626,949 |
| Mar 10, 2026 | $176.30 | $176.48 | $169.30 | $169.43 | -3.21% | 1,514,212 |
| Mar 9, 2026 | $170.60 | $175.49 | $164.51 | $175.05 | +0.60% | 1,796,902 |
| Mar 6, 2026 | $171.20 | $174.31 | $168.01 | $174.00 | -0.91% | 1,773,955 |
| Mar 5, 2026 | $178.21 | $179.86 | $174.00 | $175.60 | -3.60% | 1,114,553 |
| Mar 4, 2026 | $183.06 | $184.51 | $181.07 | $182.16 | -0.26% | 866,290 |
| Mar 3, 2026 | $182.40 | $184.84 | $176.14 | $182.64 | -3.38% | 1,017,192 |
| Mar 2, 2026 | $184.59 | $189.35 | $181.70 | $189.02 | -0.57% | 1,044,507 |
| Feb 27, 2026 | $185.55 | $190.93 | $185.07 | $190.10 | +0.48% | 1,530,642 |
| Feb 26, 2026 | $188.53 | $190.80 | $187.50 | $189.20 | +0.61% | 869,922 |
| Feb 25, 2026 | $186.47 | $188.52 | $184.93 | $188.05 | +1.36% | 888,002 |
| Feb 24, 2026 | $180.61 | $186.14 | $179.79 | $185.53 | +2.36% | 1,268,394 |
| Feb 23, 2026 | $186.27 | $187.00 | $175.35 | $181.26 | -4.61% | 1,577,487 |
| Feb 20, 2026 | $188.23 | $192.69 | $186.37 | $190.02 | +0.33% | 1,037,435 |
| Feb 19, 2026 | $189.97 | $191.47 | $186.28 | $189.40 | -0.74% | 760,342 |
| Feb 18, 2026 | $187.82 | $191.48 | $187.61 | $190.82 | +1.92% | 1,031,783 |
| Feb 17, 2026 | $185.91 | $190.48 | $185.51 | $187.22 | +0.24% | 1,351,535 |
| Feb 13, 2026 | $184.72 | $188.63 | $181.09 | $186.77 | +1.58% | 1,272,003 |
| Feb 12, 2026 | $197.00 | $199.06 | $183.56 | $183.86 | -6.91% | 2,012,579 |
| Feb 11, 2026 | $196.60 | $197.71 | $194.22 | $197.51 | +0.63% | 1,369,682 |
| Feb 10, 2026 | $192.78 | $197.74 | $192.27 | $196.27 | +1.96% | 2,014,689 |
| Feb 9, 2026 | $188.00 | $193.83 | $185.98 | $192.50 | +2.61% | 1,872,246 |
| Feb 6, 2026 | $177.89 | $188.67 | $176.66 | $187.60 | +6.82% | 1,967,440 |
| Feb 5, 2026 | $176.06 | $179.91 | $172.00 | $175.62 | +8.88% | 2,674,535 |
| Feb 4, 2026 | $157.24 | $170.08 | $156.25 | $161.30 | +2.71% | 2,939,708 |
| Feb 3, 2026 | $163.74 | $165.47 | $154.83 | $157.05 | -4.02% | 1,186,149 |
| Feb 2, 2026 | $162.83 | $165.00 | $161.12 | $163.63 | +0.37% | 1,102,080 |
| Jan 30, 2026 | $164.12 | $165.79 | $161.00 | $163.03 | -0.66% | 1,181,811 |
| Jan 29, 2026 | $166.14 | $166.14 | $160.66 | $164.12 | -0.49% | 737,452 |
| Jan 28, 2026 | $167.53 | $167.53 | $163.65 | $164.92 | -1.27% | 624,393 |
| Jan 27, 2026 | $166.45 | $168.54 | $164.53 | $167.04 | -0.36% | 685,637 |
| Jan 26, 2026 | $168.80 | $168.80 | $166.66 | $167.65 | -0.64% | 505,426 |
| Jan 23, 2026 | $168.20 | $169.87 | $167.57 | $168.73 | -0.11% | 408,052 |
| Jan 22, 2026 | $171.15 | $172.36 | $167.49 | $168.92 | -0.61% | 661,967 |
| Jan 21, 2026 | $167.68 | $172.00 | $167.32 | $169.95 | +2.66% | 1,031,073 |
| Jan 20, 2026 | $167.28 | $169.33 | $164.44 | $165.55 | -3.46% | 1,118,709 |
| Jan 16, 2026 | $171.00 | $174.67 | $171.00 | $171.49 | +0.01% | 1,371,040 |
| Jan 15, 2026 | $169.74 | $172.62 | $167.40 | $171.47 | +1.32% | 907,738 |
| Jan 14, 2026 | $169.33 | $171.59 | $168.88 | $169.23 | -0.57% | 814,895 |
| Jan 13, 2026 | $171.98 | $172.51 | $167.95 | $170.20 | -1.05% | 913,664 |
| Jan 12, 2026 | $173.36 | $174.01 | $168.84 | $172.00 | -0.46% | 885,371 |
| Jan 9, 2026 | $171.31 | $173.04 | $168.02 | $172.79 | +1.30% | 770,269 |
| Jan 8, 2026 | $166.82 | $172.10 | $166.81 | $170.58 | +2.26% | 859,330 |
| Jan 7, 2026 | $168.49 | $169.32 | $165.88 | $166.81 | -0.51% | 787,429 |
| Jan 6, 2026 | $160.47 | $168.04 | $160.11 | $167.66 | +4.70% | 1,164,705 |
| Jan 5, 2026 | $155.08 | $161.16 | $154.79 | $160.13 | +2.63% | 1,279,254 |
| Jan 2, 2026 | $157.72 | $158.09 | $154.62 | $156.03 | -0.08% | 809,641 |
| Dec 31, 2025 | $157.12 | $158.03 | $156.03 | $156.15 | -1.26% | 496,409 |
| Dec 30, 2025 | $157.62 | $158.36 | $156.61 | $158.14 | +0.19% | 574,597 |
| Dec 29, 2025 | $157.95 | $159.16 | $157.43 | $157.84 | -0.33% | 838,204 |
| Dec 26, 2025 | $157.56 | $158.64 | $156.76 | $158.37 | +0.34% | 503,119 |
| Dec 24, 2025 | $156.76 | $158.62 | $154.98 | $157.84 | +0.69% | 407,351 |
| Dec 23, 2025 | $158.48 | $158.59 | $155.98 | $156.76 | -1.58% | 934,425 |
| Dec 22, 2025 | $158.69 | $160.11 | $157.94 | $159.28 | +1.01% | 1,099,097 |
| Dec 19, 2025 | $160.95 | $161.60 | $156.47 | $157.69 | -2.32% | 2,638,512 |
| Dec 18, 2025 | $161.88 | $162.58 | $159.97 | $161.44 | +0.54% | 1,141,312 |
| Dec 17, 2025 | $163.00 | $165.26 | $159.40 | $160.58 | -1.42% | 1,165,106 |
| Dec 16, 2025 | $162.49 | $164.11 | $161.19 | $162.89 | +0.10% | 1,287,089 |
| Dec 15, 2025 | $166.49 | $167.02 | $162.60 | $162.73 | -1.63% | 1,119,523 |
| Dec 12, 2025 | $164.15 | $166.83 | $163.00 | $165.43 | +0.95% | 1,685,911 |
| Dec 11, 2025 | $164.11 | $165.27 | $162.11 | $163.87 | -0.43% | 1,188,233 |
| Dec 10, 2025 | $159.02 | $166.61 | $159.01 | $164.58 | +3.51% | 1,233,717 |
| Dec 9, 2025 | $160.45 | $162.89 | $157.98 | $159.00 | +0.84% | 1,505,405 |
| Dec 8, 2025 | $157.34 | $158.92 | $156.66 | $157.68 | +0.30% | 1,180,021 |
| Dec 5, 2025 | $157.92 | $159.50 | $155.40 | $157.21 | +0.24% | 1,565,473 |
| Dec 4, 2025 | $154.71 | $156.95 | $153.17 | $156.84 | +1.19% | 1,364,276 |
| Dec 3, 2025 | $151.55 | $156.60 | $150.92 | $155.00 | +2.70% | 1,571,193 |
| Dec 2, 2025 | $147.14 | $152.06 | $146.12 | $150.93 | +2.87% | 1,975,309 |
| Dec 1, 2025 | $145.10 | $148.47 | $144.00 | $146.72 | -0.32% | 1,657,011 |
| Nov 28, 2025 | $147.51 | $148.09 | $146.25 | $147.19 | -0.03% | 732,773 |
| Nov 26, 2025 | $147.35 | $149.44 | $146.46 | $147.23 | -0.18% | 1,567,953 |
| Nov 25, 2025 | $144.43 | $152.99 | $144.30 | $147.50 | +2.69% | 2,572,486 |
| Nov 24, 2025 | $142.00 | $145.11 | $139.13 | $143.63 | +0.75% | 6,264,149 |
| Nov 21, 2025 | $132.96 | $143.46 | $132.64 | $142.56 | +7.34% | 1,814,117 |
| Nov 20, 2025 | $133.97 | $137.41 | $132.74 | $132.81 | -0.65% | 924,445 |
| Nov 19, 2025 | $132.26 | $134.97 | $131.95 | $133.68 | +1.06% | 1,049,954 |
| Nov 18, 2025 | $132.47 | $132.87 | $130.23 | $132.28 | -0.25% | 1,593,537 |
| Nov 17, 2025 | $135.52 | $136.56 | $131.66 | $132.61 | -3.30% | 902,634 |
| Nov 14, 2025 | $137.01 | $138.02 | $136.00 | $137.13 | -1.64% | 809,753 |
| Nov 13, 2025 | $140.32 | $143.42 | $138.93 | $139.42 | -1.60% | 1,026,798 |
| Nov 12, 2025 | $144.45 | $145.25 | $140.69 | $141.69 | -1.94% | 1,212,922 |
| Nov 11, 2025 | $139.32 | $144.84 | $138.25 | $144.49 | +4.53% | 1,427,836 |
| Nov 10, 2025 | $136.47 | $138.50 | $134.02 | $138.23 | +2.51% | 872,703 |
| Nov 7, 2025 | $132.39 | $134.99 | $132.39 | $134.84 | +0.83% | 810,879 |
| Nov 6, 2025 | $137.66 | $138.50 | $131.90 | $133.73 | -2.54% | 991,727 |
| Nov 5, 2025 | $136.46 | $137.58 | $133.39 | $137.21 | +1.14% | 1,189,826 |
| Nov 4, 2025 | $138.32 | $138.49 | $133.87 | $135.67 | -2.06% | 1,172,797 |
| Nov 3, 2025 | $137.58 | $138.69 | $133.71 | $138.53 | +0.47% | 1,246,211 |
| Oct 31, 2025 | $137.74 | $138.73 | $133.92 | $137.88 | -0.40% | 1,641,877 |
| Oct 30, 2025 | $145.22 | $150.78 | $137.62 | $138.43 | +4.94% | 3,842,830 |
| Oct 29, 2025 | $134.10 | $135.55 | $130.73 | $131.91 | -0.92% | 2,200,099 |
| Oct 28, 2025 | $134.94 | $135.60 | $132.79 | $133.14 | -1.85% | 874,200 |
| Oct 27, 2025 | $135.43 | $136.81 | $134.13 | $135.65 | +0.33% | 1,010,822 |
| Oct 24, 2025 | $137.83 | $138.50 | $135.14 | $135.21 | -0.58% | 864,348 |
| Oct 23, 2025 | $136.11 | $137.83 | $135.31 | $136.00 | +0.31% | 1,032,135 |
| Oct 22, 2025 | $136.50 | $138.41 | $135.37 | $135.58 | -0.47% | 1,254,873 |
| Oct 21, 2025 | $133.62 | $136.93 | $132.09 | $136.22 | +0.96% | 957,024 |
| Oct 20, 2025 | $132.62 | $135.06 | $131.13 | $134.93 | – | 1,032,093 |
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% |