Align Technology Stock Price History

NASDAQ: ALGNHealth CareIndustrial SpecialtiesUSD

142.71+1.68 (+1.19%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

ALGN price history at a glance

The price history for Align Technology (ALGN) on this page begins on January 29, 2001, when the stock closed at $14.13; it most recently closed at $142.71 on October 5, 2026. The highest price in this record is $737.45, reached on September 20, 2021; the latest close is 80.6% below that peak. Across the 24 complete calendar years in the table, ALGN finished higher in 15 and lower in 9. Its best year was 2003 (+534.6%) and its worst was 2022 (-67.9%).

Over roughly 26 years the share price changed +910.3%, a 9.4% compound annual price return (excluding dividends). In the last 12 months alone, ALGN has gained 8.2%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.

Summary generated from market data by MetaCap's automated system. Methodology

Key price levels

High since 2001: $737.45
Date of high: Sep 20, 2021
Low since 2001: $1.26
Date of low: Nov 11, 2002
52-week high: $200.44
52-week low: $126.26
IPO year: 2001
Last close: $142.71

ALGN returns

1 week

-0.72%

1 month

-6.68%

3 months

-20.47%

6 months

-17.58%

Year to date

-8.61%

1 year

+8.22%

3 years

-46.98%

5 years

-76.08%

ALGN price return, excluding dividends.

ALGN annual returns

Calendar-year price returns
Year	First close	Year-end close	High	Low	Return
2026	172.79	142.71	200.44	138.05	-8.54%
2025	212.12	156.03	237.23	122.00	-25.08%
2024	264.68	208.26	335.40	196.09	-23.99%
2023	220.77	274.00	413.20	176.34	+29.92%
2022	546.99	210.90	658.50	172.05	-67.91%
2021	570.53	657.18	737.45	494.45	+22.98%
2020	293.33	534.38	543.65	127.88	+90.55%
2019	198.25	280.44	334.64	169.84	+50.20%
2018	241.07	186.71	398.88	177.93	-15.97%
2017	94.08	222.19	266.41	88.56	+131.13%
2016	64.53	96.13	102.10	57.31	+45.98%
2015	62.58	65.85	68.48	51.65	+17.17%
2014	60.71	56.20	65.10	43.27	-1.70%
2013	25.87	57.17	60.00	25.61	+95.05%
2012	23.71	29.31	39.82	22.39	+23.51%
2011	20.00	23.73	25.94	14.25	+21.44%
2010	17.66	19.54	21.40	13.18	+9.65%
2009	8.82	17.82	18.85	6.10	+100.45%
2008	14.77	8.89	16.57	4.88	-46.12%
2007	13.64	16.50	29.71	13.07	+18.11%
2006	6.19	13.97	15.33	5.62	+115.92%
2005	10.28	6.47	10.87	5.63	-39.81%
2004	18.50	10.75	22.81	8.85	-35.59%
2003	3.22	16.69	18.97	2.64	+534.60%
2002	5.28	2.63	6.25	1.26	-41.56%
2001*	14.13	4.50	18.19	2.14	-68.14%

* Partial year: the record begins after the start of 2001; return measured from the first available close.

2026 return is year to date.

ALGN daily prices (past year)

Daily open, high, low, close and volume
Date	Open	High	Low	Close	Change	Volume
Oct 9, 2026	141.03	142.86	140.10	142.71	+1.19%	1.08M
Oct 8, 2026	138.59	141.12	138.05	141.03	+0.83%	1.34M
Oct 7, 2026	140.46	141.00	138.95	139.87	-1.12%	678.82K
Oct 6, 2026	141.96	143.64	141.14	141.45	+0.57%	1.02M
Oct 5, 2026	140.07	142.35	138.36	140.65	-2.15%	1.68M
Oct 2, 2026	147.09	147.09	143.23	143.74	-1.11%	550.00K
Oct 1, 2026	145.00	146.23	143.23	145.35	0.00%	619.80K
Sep 30, 2026	144.61	146.68	142.83	145.35	+0.93%	917.80K
Sep 29, 2026	145.00	145.93	142.24	144.01	-0.68%	937.30K
Sep 28, 2026	145.00	146.20	143.33	145.00	-1.21%	882.80K
Sep 25, 2026	145.57	148.17	144.20	146.78	+0.79%	829.60K
Sep 24, 2026	148.65	149.22	145.27	145.63	-1.71%	785.80K
Sep 23, 2026	152.50	153.40	147.07	148.17	-3.34%	1.33M
Sep 22, 2026	149.17	154.10	147.62	153.29	+4.36%	966.90K
Sep 21, 2026	147.97	148.37	145.55	146.88	-0.49%	975.80K
Sep 18, 2026	149.52	150.78	146.20	147.61	-1.40%	1.50M
Sep 17, 2026	151.21	152.11	148.98	149.71	-0.49%	796.00K
Sep 16, 2026	148.18	152.46	147.56	150.45	+2.35%	946.50K
Sep 15, 2026	151.46	152.49	146.82	147.00	-3.92%	1.03M
Sep 14, 2026	151.29	153.86	150.67	153.00	+1.45%	718.60K
Sep 11, 2026	153.30	153.87	149.49	150.82	+0.07%	619.80K
Sep 10, 2026	150.55	151.22	148.50	150.72	-1.44%	836.10K
Sep 9, 2026	152.54	153.88	151.32	152.92	-0.37%	1.11M
Sep 8, 2026	156.13	156.13	153.14	153.49	-3.25%	807.20K
Sep 4, 2026	157.67	160.50	155.24	158.64	-0.76%	990.50K
Sep 3, 2026	159.65	162.92	155.84	159.86	+0.45%	694.10K
Sep 2, 2026	155.50	160.85	155.50	159.15	+2.70%	687.10K
Sep 1, 2026	158.21	159.33	153.98	154.96	-3.02%	576.40K
Aug 31, 2026	155.36	160.48	154.50	159.79	+1.40%	1.29M
Aug 28, 2026	158.51	159.97	157.21	157.58	-0.79%	954.60K
Aug 27, 2026	157.80	162.09	157.77	158.84	-0.19%	801.20K
Aug 26, 2026	158.85	161.66	158.53	159.14	-0.29%	653.60K
Aug 25, 2026	158.85	160.69	157.27	159.61	-0.02%	811.60K
Aug 24, 2026	162.25	162.80	159.07	159.64	-1.79%	762.00K
Aug 21, 2026	159.74	162.77	157.39	162.55	+2.27%	1.07M
Aug 20, 2026	162.52	164.64	157.34	158.94	-2.51%	836.70K
Aug 19, 2026	170.02	173.67	162.62	163.04	-2.90%	928.90K
Aug 18, 2026	171.57	172.37	167.78	167.91	-1.90%	744.70K
Aug 17, 2026	179.05	181.33	170.16	171.16	-5.60%	916.50K
Aug 14, 2026	176.73	182.20	176.72	181.31	+2.90%	960.00K
Aug 13, 2026	175.61	176.49	172.85	176.20	+1.25%	541.40K
Aug 12, 2026	172.96	174.74	169.46	174.02	+0.61%	658.40K
Aug 11, 2026	174.67	178.46	172.80	172.96	-1.75%	549.90K
Aug 10, 2026	173.02	176.49	172.70	176.04	+1.37%	643.60K
Aug 7, 2026	169.15	173.84	165.00	173.66	+2.71%	870.10K
Aug 6, 2026	173.43	174.09	168.67	169.08	-3.29%	655.70K
Aug 5, 2026	170.89	175.54	170.89	174.83	+0.90%	1.02M
Aug 4, 2026	172.10	174.33	170.50	173.27	+0.22%	1.12M
Aug 3, 2026	171.41	175.48	171.00	172.89	+2.21%	998.80K
Jul 31, 2026	170.81	171.75	164.74	169.16	-2.45%	1.61M
Jul 30, 2026	180.72	187.96	171.04	173.41	-3.70%	1.53M
Jul 29, 2026	175.60	184.00	174.41	180.08	+2.55%	1.66M
Jul 28, 2026	169.93	175.85	169.93	175.60	+4.49%	914.00K
Jul 27, 2026	165.43	172.10	164.75	168.05	+0.62%	1.03M
Jul 24, 2026	168.50	170.51	165.97	167.02	-0.73%	846.00K
Jul 23, 2026	169.28	171.31	165.67	168.24	-2.45%	821.00K
Jul 22, 2026	178.78	178.78	172.21	172.46	-2.84%	511.90K
Jul 21, 2026	175.05	179.30	173.01	177.50	+1.40%	683.10K
Jul 20, 2026	177.08	177.99	174.05	175.05	-0.97%	1.06M
Jul 17, 2026	176.19	181.17	174.93	176.76	-0.92%	828.70K
Jul 16, 2026	181.25	182.93	176.32	178.41	-1.57%	1.38M
Jul 15, 2026	178.23	184.60	178.23	181.26	+1.57%	604.80K
Jul 14, 2026	181.54	182.44	175.14	178.46	-1.18%	417.70K
Jul 13, 2026	180.14	184.62	179.78	180.59	+0.64%	486.80K
Jul 10, 2026	179.61	181.22	175.00	179.45	+0.72%	630.80K
Jul 9, 2026	174.42	180.29	173.70	178.17	+2.00%	1.09M
Jul 8, 2026	182.55	185.07	173.97	174.68	-5.69%	1.02M
Jul 7, 2026	189.61	190.97	183.79	185.22	-1.68%	913.50K
Jul 6, 2026	183.72	188.60	179.37	188.39	+2.10%	1.10M
Jul 2, 2026	183.11	186.52	181.53	184.52	+1.67%	1.35M
Jul 1, 2026	168.66	182.84	166.91	181.49	+7.61%	1.51M
Jun 30, 2026	172.80	173.43	166.27	168.66	-2.75%	1.37M
Jun 29, 2026	177.62	178.34	170.05	173.43	-2.80%	973.30K
Jun 26, 2026	174.03	179.35	174.03	178.43	+1.55%	1.67M
Jun 25, 2026	172.99	176.70	171.54	175.71	+2.81%	850.50K
Jun 24, 2026	170.34	174.37	165.50	170.90	+1.43%	1.50M
Jun 23, 2026	172.67	174.67	168.29	168.49	-3.03%	1.11M
Jun 22, 2026	178.50	180.55	173.48	173.76	-4.57%	1.28M
Jun 18, 2026	176.70	183.03	173.56	182.08	+4.93%	1.95M
Jun 17, 2026	179.36	185.00	172.16	173.53	-3.34%	843.70K
Jun 16, 2026	178.27	181.22	177.75	179.52	+0.71%	635.20K
Jun 15, 2026	177.88	182.59	177.21	178.26	+1.96%	1.09M
Jun 12, 2026	176.51	177.49	172.43	174.84	-0.95%	574.50K
Jun 11, 2026	170.50	177.88	169.30	176.51	+3.52%	1.03M
Jun 10, 2026	177.73	179.21	169.99	170.50	-4.27%	1.16M
Jun 9, 2026	174.51	179.85	172.59	178.10	+3.52%	1.04M
Jun 8, 2026	167.55	173.29	167.08	172.05	+2.57%	1.01M
Jun 5, 2026	168.29	171.00	166.40	167.74	-0.33%	494.40K
Jun 4, 2026	164.90	168.42	164.07	168.29	+4.07%	979.60K
Jun 3, 2026	166.27	167.13	160.70	161.71	-2.99%	1.07M
Jun 2, 2026	169.77	173.47	165.99	166.69	-1.81%	901.90K
Jun 1, 2026	172.40	173.40	169.30	169.77	-2.96%	856.80K
May 29, 2026	173.79	177.66	171.92	174.95	+0.98%	1.15M
May 28, 2026	162.88	173.78	160.33	173.25	+6.37%	1.59M
May 27, 2026	164.80	167.50	161.43	162.88	-0.41%	1.55M
May 26, 2026	164.97	166.00	162.32	163.55	-0.04%	873.50K
May 22, 2026	162.90	165.48	161.17	163.61	+0.35%	844.50K
May 21, 2026	162.15	165.01	160.43	163.04	-0.21%	1.16M
May 20, 2026	155.16	163.95	151.58	163.38	+5.30%	1.52M
May 19, 2026	158.59	159.69	154.20	155.16	-2.28%	1.40M
May 18, 2026	158.02	161.22	155.90	158.78	+0.97%	982.70K
May 15, 2026	159.55	161.00	156.99	157.25	-2.04%	923.60K
May 14, 2026	161.40	163.59	159.85	160.53	-0.75%	633.70K
May 13, 2026	165.42	165.77	160.88	161.75	-2.44%	636.40K
May 12, 2026	164.78	167.65	163.60	165.79	+0.72%	630.60K
May 11, 2026	168.88	169.66	162.72	164.61	-2.47%	1.13M
May 8, 2026	168.39	169.18	163.29	168.78	+0.23%	835.80K
May 7, 2026	174.96	176.46	167.82	168.39	-3.19%	753.30K
May 6, 2026	169.47	174.96	168.73	173.94	+3.10%	768.40K
May 5, 2026	171.26	172.62	167.77	168.71	-1.84%	751.20K
May 4, 2026	175.73	178.12	171.27	171.88	-3.93%	703.60K
May 1, 2026	177.16	179.37	174.98	178.91	+1.65%	840.30K
Apr 30, 2026	177.00	177.11	167.46	176.01	-1.34%	1.93M
Apr 29, 2026	177.28	180.42	176.08	178.40	+0.63%	1.38M
Apr 28, 2026	183.76	183.76	174.62	177.28	-4.02%	1.71M
Apr 27, 2026	189.71	192.45	183.81	184.70	-2.59%	1.48M
Apr 24, 2026	190.96	191.91	187.01	189.61	-0.56%	738.50K
Apr 23, 2026	194.52	196.13	187.58	190.67	-2.74%	1.02M
Apr 22, 2026	198.12	198.12	193.67	196.05	+0.44%	922.30K
Apr 21, 2026	193.40	200.44	192.35	195.20	+1.85%	1.47M
Apr 20, 2026	187.35	193.00	187.05	191.66	+0.84%	1.36M
Apr 17, 2026	188.87	194.67	188.23	190.07	+2.73%	1.02M
Apr 16, 2026	186.72	189.00	184.48	185.02	-0.81%	645.90K
Apr 15, 2026	187.32	187.99	185.34	186.53	+1.00%	785.80K
Apr 14, 2026	183.10	187.99	182.63	184.69	+2.23%	879.30K
Apr 13, 2026	171.74	181.28	170.18	180.67	+4.35%	1.03M
Apr 10, 2026	175.27	178.23	172.34	173.14	-0.80%	784.90K
Apr 9, 2026	173.21	175.65	170.50	174.53	-1.30%	970.10K
Apr 8, 2026	177.62	185.00	176.00	176.83	+5.97%	927.40K
Apr 7, 2026	171.10	171.15	165.40	166.87	-2.91%	934.50K
Apr 6, 2026	170.07	172.73	169.13	171.87	+0.74%	501.60K
Apr 2, 2026	168.52	175.15	164.00	170.60	-1.23%	1.08M
Apr 1, 2026	172.61	178.17	171.74	172.73	+0.76%	872.20K
Mar 31, 2026	167.50	173.12	166.06	171.43	+3.11%	791.40K
Mar 30, 2026	168.25	168.25	164.73	166.26	-0.07%	1.06M
Mar 27, 2026	175.51	176.83	163.78	166.38	-6.17%	1.29M
Mar 26, 2026	177.66	182.97	176.73	177.33	-1.63%	652.10K
Mar 25, 2026	180.78	183.34	176.15	180.27	+0.52%	746.80K
Mar 24, 2026	177.92	181.45	175.38	179.34	-0.84%	985.60K
Mar 23, 2026	178.00	182.16	176.36	180.86	+4.43%	1.44M
Mar 20, 2026	175.97	178.74	171.27	173.18	-1.74%	2.11M
Mar 19, 2026	180.00	180.62	175.04	176.25	+2.23%	2.32M
Mar 18, 2026	172.97	175.43	170.50	172.41	-2.11%	1.73M
Mar 17, 2026	174.19	179.06	174.19	176.12	+3.94%	1.34M
Mar 16, 2026	166.60	169.57	164.05	169.45	+3.18%	1.51M
Mar 13, 2026	167.43	168.23	162.27	164.23	-1.61%	1.89M
Mar 12, 2026	172.80	173.76	165.73	166.92	-4.51%	1.81M
Mar 11, 2026	168.53	177.45	168.31	174.81	+3.18%	1.63M
Mar 10, 2026	176.30	176.48	169.30	169.43	-3.21%	1.51M
Mar 9, 2026	170.60	175.49	164.51	175.05	+0.60%	1.80M
Mar 6, 2026	171.20	174.31	168.01	174.00	-0.91%	1.77M
Mar 5, 2026	178.21	179.86	174.00	175.60	-3.60%	1.11M
Mar 4, 2026	183.06	184.51	181.07	182.16	-0.26%	866.30K
Mar 3, 2026	182.40	184.84	176.14	182.64	-3.38%	1.02M
Mar 2, 2026	184.59	189.35	181.70	189.02	-0.57%	1.04M
Feb 27, 2026	185.55	190.93	185.07	190.10	+0.48%	1.53M
Feb 26, 2026	188.53	190.80	187.50	189.20	+0.61%	869.90K
Feb 25, 2026	186.47	188.52	184.93	188.05	+1.36%	888.00K
Feb 24, 2026	180.61	186.14	179.79	185.53	+2.36%	1.27M
Feb 23, 2026	186.27	187.00	175.35	181.26	-4.61%	1.58M
Feb 20, 2026	188.23	192.69	186.37	190.02	+0.33%	1.04M
Feb 19, 2026	189.97	191.47	186.28	189.40	-0.74%	760.30K
Feb 18, 2026	187.82	191.48	187.61	190.82	+1.92%	1.03M
Feb 17, 2026	185.91	190.48	185.51	187.22	+0.24%	1.35M
Feb 13, 2026	184.72	188.63	181.09	186.77	+1.58%	1.27M
Feb 12, 2026	197.00	199.06	183.56	183.86	-6.91%	2.01M
Feb 11, 2026	196.60	197.71	194.22	197.51	+0.63%	1.37M
Feb 10, 2026	192.78	197.74	192.27	196.27	+1.96%	2.01M
Feb 9, 2026	188.00	193.83	185.98	192.50	+2.61%	1.87M
Feb 6, 2026	177.89	188.67	176.66	187.60	+6.82%	1.97M
Feb 5, 2026	176.06	179.91	172.00	175.62	+8.88%	2.67M
Feb 4, 2026	157.24	170.08	156.25	161.30	+2.71%	2.94M
Feb 3, 2026	163.74	165.47	154.83	157.05	-4.02%	1.19M
Feb 2, 2026	162.83	165.00	161.12	163.63	+0.37%	1.10M
Jan 30, 2026	164.12	165.79	161.00	163.03	-0.66%	1.18M
Jan 29, 2026	166.14	166.14	160.66	164.12	-0.49%	737.40K
Jan 28, 2026	167.53	167.53	163.65	164.92	-1.27%	624.30K
Jan 27, 2026	166.45	168.54	164.53	167.04	-0.36%	685.60K
Jan 26, 2026	168.80	168.80	166.66	167.65	-0.64%	505.40K
Jan 23, 2026	168.20	169.87	167.57	168.73	-0.11%	408.00K
Jan 22, 2026	171.15	172.36	167.49	168.92	-0.61%	662.00K
Jan 21, 2026	167.68	172.00	167.32	169.95	+2.66%	1.03M
Jan 20, 2026	167.28	169.33	164.44	165.55	-3.46%	1.12M
Jan 16, 2026	171.00	174.67	171.00	171.49	+0.01%	1.37M
Jan 15, 2026	169.74	172.62	167.40	171.47	+1.32%	907.70K
Jan 14, 2026	169.33	171.59	168.88	169.23	-0.57%	814.90K
Jan 13, 2026	171.98	172.51	167.95	170.20	-1.05%	913.60K
Jan 12, 2026	173.36	174.01	168.84	172.00	-0.46%	885.40K
Jan 9, 2026	171.31	173.04	168.02	172.79	+1.30%	770.30K
Jan 8, 2026	166.82	172.10	166.81	170.58	+2.26%	859.30K
Jan 7, 2026	168.49	169.32	165.88	166.81	-0.51%	787.40K
Jan 6, 2026	160.47	168.04	160.11	167.66	+4.70%	1.16M
Jan 5, 2026	155.08	161.16	154.79	160.13	+2.63%	1.28M
Jan 2, 2026	157.72	158.09	154.62	156.03	-0.08%	809.60K
Dec 31, 2025	157.12	158.03	156.03	156.15	-1.26%	496.40K
Dec 30, 2025	157.62	158.36	156.61	158.14	+0.19%	574.60K
Dec 29, 2025	157.95	159.16	157.43	157.84	-0.33%	838.20K
Dec 26, 2025	157.56	158.64	156.76	158.37	+0.34%	503.10K
Dec 24, 2025	156.76	158.62	154.98	157.84	+0.69%	407.40K
Dec 23, 2025	158.48	158.59	155.98	156.76	-1.58%	934.40K
Dec 22, 2025	158.69	160.11	157.94	159.28	+1.01%	1.10M
Dec 19, 2025	160.95	161.60	156.47	157.69	-2.32%	2.64M
Dec 18, 2025	161.88	162.58	159.97	161.44	+0.54%	1.14M
Dec 17, 2025	163.00	165.26	159.40	160.58	-1.42%	1.17M
Dec 16, 2025	162.49	164.11	161.19	162.89	+0.10%	1.29M
Dec 15, 2025	166.49	167.02	162.60	162.73	-1.63%	1.12M
Dec 12, 2025	164.15	166.83	163.00	165.43	+0.95%	1.69M
Dec 11, 2025	164.11	165.27	162.11	163.87	-0.43%	1.19M
Dec 10, 2025	159.02	166.61	159.01	164.58	+3.51%	1.23M
Dec 9, 2025	160.45	162.89	157.98	159.00	+0.84%	1.51M
Dec 8, 2025	157.34	158.92	156.66	157.68	+0.30%	1.18M
Dec 5, 2025	157.92	159.50	155.40	157.21	+0.24%	1.57M
Dec 4, 2025	154.71	156.95	153.17	156.84	+1.19%	1.36M
Dec 3, 2025	151.55	156.60	150.92	155.00	+2.70%	1.57M
Dec 2, 2025	147.14	152.06	146.12	150.93	+2.87%	1.98M
Dec 1, 2025	145.10	148.47	144.00	146.72	-0.32%	1.66M
Nov 28, 2025	147.51	148.09	146.25	147.19	-0.03%	732.80K
Nov 26, 2025	147.35	149.44	146.46	147.23	-0.18%	1.57M
Nov 25, 2025	144.43	152.99	144.30	147.50	+2.69%	2.57M
Nov 24, 2025	142.00	145.11	139.13	143.63	+0.75%	6.26M
Nov 21, 2025	132.96	143.46	132.64	142.56	+7.34%	1.81M
Nov 20, 2025	133.97	137.41	132.74	132.81	-0.65%	924.40K
Nov 19, 2025	132.26	134.97	131.95	133.68	+1.06%	1.05M
Nov 18, 2025	132.47	132.87	130.23	132.28	-0.25%	1.59M
Nov 17, 2025	135.52	136.56	131.66	132.61	-3.30%	902.60K
Nov 14, 2025	137.01	138.02	136.00	137.13	-1.64%	809.70K
Nov 13, 2025	140.32	143.42	138.93	139.42	-1.60%	1.03M
Nov 12, 2025	144.45	145.25	140.69	141.69	-1.94%	1.21M
Nov 11, 2025	139.32	144.84	138.25	144.49	+4.53%	1.43M
Nov 10, 2025	136.47	138.50	134.02	138.23	+2.51%	872.50K
Nov 7, 2025	132.39	134.99	132.39	134.84	+0.83%	810.90K
Nov 6, 2025	137.66	138.50	131.90	133.73	-2.54%	991.70K
Nov 5, 2025	136.46	137.58	133.39	137.21	+1.14%	1.19M
Nov 4, 2025	138.32	138.49	133.87	135.67	-2.06%	1.17M
Nov 3, 2025	137.58	138.69	133.71	138.53	+0.47%	1.25M
Oct 31, 2025	137.74	138.73	133.92	137.88	-0.40%	1.64M
Oct 30, 2025	145.22	150.78	137.62	138.43	+4.94%	3.84M
Oct 29, 2025	134.10	135.55	130.73	131.91	-0.92%	2.20M
Oct 28, 2025	134.94	135.60	132.79	133.14	-1.85%	874.20K
Oct 27, 2025	135.43	136.81	134.13	135.65	+0.33%	1.01M
Oct 24, 2025	137.83	138.50	135.14	135.21	-0.58%	864.30K
Oct 23, 2025	136.11	137.83	135.31	136.00	+0.31%	1.03M
Oct 22, 2025	136.50	138.41	135.37	135.58	-0.47%	1.25M
Oct 21, 2025	133.62	136.93	132.09	136.22	+0.96%	956.80K
Oct 20, 2025	132.62	135.06	131.13	134.93	+3.43%	1.03M
Oct 17, 2025	129.91	131.45	128.67	130.45	+0.47%	1.11M
Oct 16, 2025	129.14	133.65	128.65	129.84	+1.10%	1.39M
Oct 15, 2025	130.71	131.50	127.72	128.43	-1.05%	1.08M
Oct 14, 2025	127.07	131.59	126.33	129.79	+0.19%	1.06M
Oct 13, 2025	127.25	130.04	126.26	129.54	+2.98%	1.14M
Oct 10, 2025	128.70	130.80	124.91	125.79	-4.61%	1.75M
Oct 9, 2025	133.26	133.43	131.03	131.87	-0.92%	1.21M
Oct 8, 2025	130.56	133.24	129.95	133.09	—	1.05M

Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the ALGN chart for longer ranges.