Close Prices Last 3 Months

Price/volumes not adjusted for restructures

Date	Ex	Sym	Open	High	Low	Close	Chg	Vol	#Tr	Bid	Ask
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
2018-08-16	Q	ALGN	353.00	355.00	344.345	351.20	0.75	950,524	12,447	342.83	354.76
2018-08-15	Q	ALGN	366.73	368.49	349.80	350.45	-18.21	1,074,672	17,887	350.50	354.50
2018-08-14	Q	ALGN	361.28	368.80	361.28	368.66	6.38	559,645	8,955	365.01	368.60
2018-08-13	Q	ALGN	364.48	369.035	361.54	362.28	-2.25	364,693	7,784	361.11	364.00
2018-08-10	Q	ALGN	363.71	369.67	362.48	364.53	-2.34	389,963	8,384	363.10	366.25
2018-08-09	Q	ALGN	366.81	371.61	363.50	366.87	0.66	529,821	8,542	364.51	374.12
2018-08-08	Q	ALGN	366.13	367.3507	363.31	366.21	0.63	462,399	6,713	365.00	367.00
2018-08-07	Q	ALGN	369.55	373.66	365.00	365.58	-3.97	615,862	9,184	364.01	367.04
2018-08-06	Q	ALGN	362.11	370.45	362.11	369.55	6.04	526,859	9,235	366.01	369.75
2018-08-03	Q	ALGN	368.52	369.49	356.13	363.51	-4.41	713,031	12,191	361.90	363.49
2018-08-02	Q	ALGN	351.00	369.02	350.51	367.92	14.22	803,913	14,799	367.92	369.20
2018-08-01	Q	ALGN	356.65	361.29	352.60	353.70	-2.95	871,164	15,590	350.01	353.70
2018-07-31	Q	ALGN	348.88	358.56	341.91	356.65	8.07	1,286,615	18,206	355.00	358.25
2018-07-30	Q	ALGN	353.50	356.0291	341.24	348.58	-5.19	1,263,004	22,512	347.00	349.58
2018-07-27	Q	ALGN	364.51	365.55	349.128	353.77	-9.25	838,036	16,674	353.00	354.00
2018-07-26	Q	ALGN	377.61	380.00	354.74	363.02	-18.75	1,834,827	26,637	362.02	364.30
2018-07-25	Q	ALGN	374.69	383.46	373.00	381.77	9.18	975,644	15,772	370.54	372.00
2018-07-24	Q	ALGN	378.96	384.745	369.76	372.59	-4.91	937,746	14,631	372.81	374.80
2018-07-23	Q	ALGN	375.50	385.00	368.7416	377.50	2.12	722,140	10,644	368.00	381.00
2018-07-20	Q	ALGN	371.06	378.975	369.58	375.38	5.06	755,848	11,475	375.20	376.00
2018-07-19	Q	ALGN	369.88	373.49	365.00	370.32	-1.99	560,167	9,553	365.84	373.16
2018-07-18	Q	ALGN	373.86	375.325	367.81	372.31	1.78	452,245	8,129	368.78	371.85
2018-07-17	Q	ALGN	359.59	371.05	357.46	370.53	8.25	559,026	8,615	368.00	379.50
2018-07-16	Q	ALGN	365.00	366.32	358.02	362.28	-1.17	400,601	7,021	356.00	360.00
2018-07-13	Q	ALGN	364.00	368.9715	361.285	363.45	0.63	733,989	11,083	360.00	363.57
2018-07-12	Q	ALGN	350.31	363.0399	350.31	362.82	13.95	810,244	15,493	352.00	364.00
2018-07-11	Q	ALGN	346.98	352.40	345.50	348.87	-2.58	433,562	7,811	340.00	354.70
2018-07-10	Q	ALGN	350.00	352.83	347.25	351.45	2.48	594,782	9,121	335.00	348.50
2018-07-09	Q	ALGN	350.58	354.12	345.44	348.97	1.50	784,886	10,720	348.00	354.90
2018-07-06	Q	ALGN	341.39	349.70	338.795	347.47	6.09	642,018	10,023	347.65	347.70
2018-07-05	Q	ALGN	342.18	343.229	333.57	341.38	2.70	737,493	10,019	332.50	342.00
2018-07-04	Q	ALGN	341.10	344.52	337.11	338.68	-1.60	475,380	0	337.02	340.69
2018-07-03	Q	ALGN	341.10	344.52	337.11	338.68	-1.60	475,380	7,367	337.02	340.69
2018-07-02	Q	ALGN	334.90	341.05	332.0133	340.28	-1.86	1,047,083	14,555	332.01	342.99
2018-06-29	Q	ALGN	345.71	346.125	341.70	342.14	-1.66	937,609	10,354	340.20	342.00
2018-06-28	Q	ALGN	340.57	345.90	334.4364	343.80	1.02	1,262,311	18,224	335.05	347.57
2018-06-27	Q	ALGN	352.42	356.4741	342.26	342.78	-9.64	1,009,813	14,743	342.81	347.00
2018-06-26	Q	ALGN	349.27	357.69	348.30	352.42	6.12	940,213	12,575	349.55	353.95
2018-06-25	Q	ALGN	350.00	350.47	341.28	346.30	-6.97	1,174,116	17,192	346.25	349.69
2018-06-22	Q	ALGN	361.57	363.96	347.15	353.27	-6.33	1,296,514	17,336	349.51	355.00
2018-06-21	Q	ALGN	365.66	369.00	359.15	359.60	-5.10	1,019,538	15,218	357.01	362.70