Close Prices Last 3 Months

Price/volumes not adjusted for restructures

Date	Ex	Sym	Open	High	Low	Close	Chg	Vol	#Tr	Bid	Ask
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
2018-06-20	Q	ALGN	368.01	369.20	362.69	364.70	-0.54	794,169	11,027	364.00	369.00
2018-06-19	Q	ALGN	366.20	369.08	358.67	365.24	-4.86	847,541	12,783	359.01	365.75
2018-06-18	Q	ALGN	361.01	371.55	357.11	370.10	7.44	874,673	12,161	368.70	370.76
2018-06-15	Q	ALGN	364.81	366.885	358.27	362.66	-3.61	1,143,538	13,338	360.52	369.00
2018-06-14	Q	ALGN	364.35	370.47	363.70	366.27	2.78	872,402	12,736	365.00	370.00
2018-06-13	Q	ALGN	356.00	365.76	354.59	363.49	9.24	1,231,819	18,058	363.60	366.00
2018-06-12	Q	ALGN	349.60	355.98	349.29	354.25	5.81	861,886	12,928	353.25	385.00
2018-06-11	Q	ALGN	345.28	349.785	343.72	348.44	1.77	634,959	8,897	348.50	349.60
2018-06-08	Q	ALGN	337.03	347.4399	333.00	346.67	7.35	774,356	10,837	340.00	346.99
2018-06-07	Q	ALGN	346.86	347.85	333.30	339.32	-7.05	1,225,350	16,757	339.00	339.32
2018-06-06	Q	ALGN	347.25	347.969	342.831	346.37	0.29	768,034	10,286	345.10	346.36
2018-06-05	Q	ALGN	343.21	346.55	341.54	346.08	2.88	925,154	14,200	345.00	347.00
2018-06-04	Q	ALGN	335.54	343.88	333.22	343.20	10.11	794,570	11,163	342.10	343.95
2018-06-01	Q	ALGN	333.17	335.35	325.28	333.09	1.14	1,081,700	14,880	331.00	335.00
2018-05-31	Q	ALGN	331.70	338.50	330.21	331.95	0.50	1,421,679	17,391	332.00	335.00
2018-05-30	Q	ALGN	327.92	333.34	327.225	331.45	5.27	903,312	12,768	331.00	331.70
2018-05-29	Q	ALGN	318.19	326.815	317.86	326.18	7.64	1,027,815	13,854	319.00	326.90
2018-05-28	Q	ALGN				318.54				318.24	319.00
2018-05-25	Q	ALGN	318.08	322.6717	316.38	318.54	1.50	1,268,089	14,399
2018-05-24	Q	ALGN	310.13	318.59	308.005	317.04	8.84	1,354,331	15,668	317.00	317.89
2018-05-23	Q	ALGN	297.86	308.67	297.17	308.20	10.34	1,243,445	15,027	308.20	309.95
2018-05-22	Q	ALGN	305.96	306.11	294.00	297.86	-4.60	856,189	11,285	296.01	303.38
2018-05-21	Q	ALGN	300.00	304.99	299.47	302.46	4.46	853,905	10,954	301.90	303.80
2018-05-18	Q	ALGN	293.49	299.46	292.76	298.00	5.28	900,783	11,485	296.45	299.19
2018-05-17	Q	ALGN	289.52	294.91	287.73	292.72	4.76	927,859	10,234	290.00	294.89
2018-05-16	Q	ALGN	283.50	292.82	281.61	287.96	4.19	881,111	11,146	288.51	289.75
2018-05-15	Q	ALGN	283.53	284.26	276.81	283.77	-2.65	868,337	11,666	283.00	285.00
2018-05-14	Q	ALGN	286.99	296.4699	284.75	286.42	-0.07	1,231,448	15,497	285.50	289.50
2018-05-11	Q	ALGN	278.29	288.36	277.99	286.49	8.76	1,471,608	17,651	286.50	288.00
2018-05-10	Q	ALGN	268.01	280.25	267.13	277.73	9.73	1,202,471	13,442	270.00	278.00
2018-05-09	Q	ALGN	265.49	270.60	265.49	268.00	2.54	747,026	10,457	244.51	269.94
2018-05-08	Q	ALGN	263.54	266.08	260.23	265.46	0.43	820,822	10,726	265.09	265.46
2018-05-07	Q	ALGN	259.25	267.04	259.23	265.03	6.06	1,186,251	11,966	265.00	265.50
2018-05-04	Q	ALGN	251.99	260.26	246.38	258.97	3.83	1,020,927	12,941	258.00	259.00
2018-05-03	Q	ALGN	249.00	255.41	244.40	255.14	5.67	964,708	13,013	254.00	258.00
2018-05-02	Q	ALGN	250.40	252.93	249.17	249.47	-1.87	746,038	11,363	248.00	250.77
2018-05-01	Q	ALGN	249.21	252.69	247.51	251.34	1.49	570,351	9,288	251.23	254.30
2018-04-30	Q	ALGN	258.63	258.63	249.58	249.85	-8.05	1,103,485	13,493	249.00	251.74
2018-04-27	Q	ALGN	259.99	260.84	251.48	257.90	-1.99	981,712	13,436	256.01	257.90
2018-04-26	Q	ALGN	261.99	266.095	242.71	259.89	14.26	2,927,841	31,431	250.00	264.99
2018-04-25	Q	ALGN	238.47	245.78	234.40	245.63	5.97	1,298,132	18,964	255.75	258.00
2018-04-24	Q	ALGN	248.62	251.47	235.825	239.66	-7.54	1,267,377	18,357	240.00	242.68
2018-04-23	Q	ALGN	248.63	251.37	245.0069	247.20	0.13	846,489	11,869	247.25	248.05
2018-04-20	Q	ALGN	253.38	256.66	245.41	247.07	-5.71	1,323,286	17,991	246.00	248.00
2018-04-19	Q	ALGN	265.82	267.0153	250.27	252.78	-24.27	2,458,586	30,993	252.80	253.50
2018-04-18	Q	ALGN	274.00	280.23	270.57	277.05	4.40	885,870	11,615	268.50	272.00
2018-04-17	Q	ALGN	269.17	274.52	267.78	272.65	7.15	958,148	12,641	267.19	272.64
2018-04-16	Q	ALGN	264.77	268.32	263.02	265.50	3.78	533,568	6,910	265.50	270.55
2018-04-13	Q	ALGN	266.22	267.21	259.50	261.72	-2.04	594,139	8,187	258.00	262.45
2018-04-12	Q	ALGN	259.62	264.88	258.47	263.76	6.74	579,685	8,234	263.00	275.00
2018-04-11	Q	ALGN	255.58	260.4587	254.525	257.02	-1.25	490,842	7,221	252.00	258.45
2018-04-10	Q	ALGN	254.17	259.96	252.34	258.27	9.21	942,501	11,134	254.25	259.99
2018-04-09	Q	ALGN	248.37	255.26	247.62	249.06	3.83	578,875	9,907	245.50	249.06
2018-04-06	Q	ALGN	252.40	255.718	243.20	245.23	-10.12	909,745	12,540	242.00	249.95
2018-04-05	Q	ALGN	251.32	259.73	251.32	255.35	6.42	1,096,548	12,156	244.00	260.00
2018-04-04	Q	ALGN	239.72	250.015	238.50	248.93	5.31	752,945	10,424	248.93	257.75
2018-04-03	Q	ALGN	244.01	248.0924	240.08	243.62	0.93	847,526	12,899	240.00	243.60
2018-04-02	Q	ALGN	251.00	254.80	238.17	242.69	-8.44	927,845	15,306	242.00	246.00
2018-03-30	Q	ALGN	245.98	257.4668	243.08	251.13	6.71	1,259,386	0	251.25	253.01
2018-03-29	Q	ALGN	245.98	257.4668	243.08	251.13	6.71	1,259,386	15,229	251.25	253.01
2018-03-28	Q	ALGN	248.52	248.90	241.03	244.42	-3.88	1,175,005	18,700	240.50	252.00
2018-03-27	Q	ALGN	263.98	264.7398	245.821	248.30	-13.22	1,041,694	15,256	247.86	250.00
2018-03-26	Q	ALGN	254.00	261.87	250.15	261.52	10.60	893,474	13,048	256.00	277.20