Close Prices Last 3 Months

Price/volumes not adjusted for restructures

Date	Ex	Sym	Open	High	Low	Close	Chg	Vol	#Tr	Bid	Ask
2018-11-16	Q	ALGN	220.76	228.80	218.71	225.41	2.64	1,058,278	13,241	224.13	230.00
2018-11-15	Q	ALGN	219.52	223.45	216.01	222.77	2.78	958,471	13,156	218.02	223.00
2018-11-14	Q	ALGN	221.90	225.1922	217.3536	219.99	0.67	1,026,220	12,969	218.05	224.00
2018-11-13	Q	ALGN	219.00	225.21	217.30	219.32	2.03	1,400,256	18,233	219.45	224.70
2018-11-12	Q	ALGN	231.97	232.99	214.62	217.29	-18.67	1,601,248	20,176	216.00	217.99
2018-11-09	Q	ALGN	243.42	244.615	226.37	235.96	-9.71	2,023,185	24,519	234.50	235.96
2018-11-08	Q	ALGN	245.54	246.80	240.95	245.67	0.36	1,431,240	15,564	240.50	246.00
2018-11-07	Q	ALGN	231.72	248.50	230.77	245.31	15.94	2,228,339	27,982	243.01	245.35
2018-11-06	Q	ALGN	227.50	231.23	225.43	229.37	1.25	954,935	11,304	225.00	229.35
2018-11-05	Q	ALGN	227.77	229.64	221.54	228.12	-1.63	1,315,135	16,474	227.50	231.00
2018-11-02	Q	ALGN	233.53	239.475	227.02	229.75	-1.20	2,215,568	23,994	224.53	232.00
2018-11-01	Q	ALGN	222.27	231.38	220.54	230.95	9.75	1,557,949	18,015	220.00	228.00
2018-10-31	Q	ALGN	226.49	229.76	220.26	221.20	-1.81	1,603,717	19,946	219.21	223.90
2018-10-30	Q	ALGN	216.80	225.62	215.00	223.01	5.07	1,850,492	23,130	215.75	226.00
2018-10-29	Q	ALGN	234.76	235.49	212.02	217.94	-12.19	2,542,523	32,150	210.11	217.00
2018-10-26	Q	ALGN	228.00	237.585	218.0101	230.13	-1.94	4,629,507	53,483	231.00	232.00
2018-10-25	Q	ALGN	231.23	235.50	203.1201	232.07	-58.76	8,520,250	88,469	225.00	227.00
2018-10-24	Q	ALGN	311.08	315.9802	290.21	290.83	-20.86	2,090,032	27,146	226.00	230.00
2018-10-23	Q	ALGN	305.90	313.30	295.78	311.69	-2.53	1,263,250	19,085	310.01	315.00
2018-10-22	Q	ALGN	313.70	318.01	306.01	314.22	1.43	1,272,413	13,189	310.00	314.22
2018-10-19	Q	ALGN	326.29	327.71	310.455	312.79	-10.27	1,335,211	18,917	308.25	314.99
2018-10-18	Q	ALGN	331.85	333.22	317.52	323.06	-9.77	834,876	12,656	322.78	334.49
2018-10-17	Q	ALGN	338.81	339.9465	329.0052	332.83	-2.11	706,866	11,437	325.15	335.43
2018-10-16	Q	ALGN	321.25	335.34	320.65	334.94	17.51	1,123,688	15,610	339.00	341.00
2018-10-15	Q	ALGN	326.53	327.4758	316.42	317.43	-10.07	1,120,135	15,143	315.70	323.00
2018-10-12	Q	ALGN	326.13	329.18	317.12	327.50	14.64	1,478,697	21,505	318.00	334.88
2018-10-11	Q	ALGN	312.30	325.37	309.18	312.86	-3.17	1,588,770	24,715	316.20	318.99
2018-10-10	Q	ALGN	336.28	336.62	315.33	316.03	-24.94	1,670,238	24,976	312.01	315.77
2018-10-09	Q	ALGN	341.59	346.77	336.02	340.97	-1.90	1,025,562	16,602	333.00	342.00
2018-10-08	Q	ALGN	350.12	352.95	333.0813	342.87	-10.24	1,379,012	21,116	343.00	348.00
2018-10-05	Q	ALGN	356.20	364.79	345.24	353.11	-4.78	1,301,604	17,988	352.12	356.00
2018-10-04	Q	ALGN	373.57	375.14	355.38	357.89	-17.37	1,277,306	19,773	355.00	358.66
2018-10-03	Q	ALGN	379.94	381.00	372.47	375.26	-0.91	879,812	11,940	370.10	374.91
2018-10-02	Q	ALGN	390.52	390.52	374.56	376.17	-15.35	892,528	15,309	375.70	377.49
2018-10-01	Q	ALGN	393.36	397.85	390.00	391.52	0.30	615,828	9,407	391.00	392.00
2018-09-28	Q	ALGN	389.85	395.23	387.96	391.22	1.25	495,703	7,987	389.25	394.65
2018-09-27	Q	ALGN	391.00	395.16	387.68	389.97	0.74	447,351	7,606	390.00	393.00
2018-09-26	Q	ALGN	392.73	395.16	386.04	389.23	-3.75	591,515	8,674	389.25	392.62
2018-09-25	Q	ALGN	390.00	398.8793	389.08	392.98	4.02	613,274	10,116	392.98	394.99
2018-09-24	Q	ALGN	379.00	391.92	377.3098	388.96	8.12	475,443	8,387	388.50	393.98
2018-09-21	Q	ALGN	381.84	384.24	378.43	380.84	1.00	786,072	7,696	377.01	383.00
2018-09-20	Q	ALGN	381.19	385.48	375.93	379.84	-0.10	626,810	10,745	377.03	383.00
2018-09-19	Q	ALGN	386.40	388.6748	377.1401	379.94	-6.02	552,188	8,739	379.06	384.15
2018-09-18	Q	ALGN	378.38	386.89	378.38	385.96	7.59	475,078	8,907	380.49	385.96
2018-09-17	Q	ALGN	390.54	393.98	377.5648	378.37	-11.79	754,417	12,545	376.00	378.37
2018-09-14	Q	ALGN	383.31	391.595	381.99	390.16	10.52	746,439	11,022	388.01	390.16
2018-09-13	Q	ALGN	383.87	388.785	377.545	379.64	-2.19	553,119	8,780	379.65	382.99
2018-09-12	Q	ALGN	382.90	385.24	374.2376	381.83	-0.97	527,416	9,533	375.00	384.89
2018-09-11	Q	ALGN	373.36	382.98	371.00	382.80	8.02	603,520	9,227	382.80	383.36
2018-09-10	Q	ALGN	370.89	376.49	367.41	374.78	6.14	550,915	9,192	369.36	377.99
2018-09-07	Q	ALGN	368.76	374.5175	365.20	368.64	-2.18	515,392	8,833	367.75	377.98
2018-09-06	Q	ALGN	373.55	376.605	367.09	370.82	-2.09	671,295	11,453	367.05	378.00
2018-09-05	Q	ALGN	384.92	384.92	366.08	372.91	-12.42	1,028,173	16,816	369.10	378.00
2018-09-04	Q	ALGN	386.64	388.90	381.11	385.33	-1.16	526,022	10,354	385.25	388.50
2018-09-03	Q	ALGN	388.43	392.69	384.51	386.49	-0.56	541,853	0	386.50	388.40
2018-08-31	Q	ALGN	388.43	392.69	384.51	386.49	-0.56	541,853	9,366	386.50	388.40
2018-08-30	Q	ALGN	383.08	391.37	383.00	387.05	1.62	502,353	11,092	385.00	390.00
2018-08-29	Q	ALGN	384.40	391.25	382.26	385.43	3.18	709,431	11,056	385.57	386.60
2018-08-28	Q	ALGN	382.56	390.19	378.162	382.25	0.38	920,438	14,745	380.00	382.72
2018-08-27	Q	ALGN	370.00	383.704	369.115	381.87	14.27	941,485	14,196	381.88	383.00
2018-08-24	Q	ALGN	365.09	370.56	363.265	367.60	4.01	614,358	10,888	366.75	370.00
2018-08-23	Q	ALGN	361.00	366.72	360.93	363.59	2.23	570,738	9,069	360.50	370.00
2018-08-22	Q	ALGN	354.02	362.20	352.39	361.36	5.47	573,544	8,928	361.00	365.00
2018-08-21	Q	ALGN	353.01	357.40	351.5201	355.89	3.61	518,161	8,984	345.28	354.99
2018-08-20	Q	ALGN	358.00	358.92	351.88	352.28	-5.02	528,983	10,767	350.00	353.74
2018-08-17	Q	ALGN	350.11	358.71	342.30	357.30	6.10	998,201	15,999	354.01	358.10