Quest Laboratories Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Jun 17, 2026	118.00	122.00	112.00	116.25	116.25	2.92%	380,400
Jun 16, 2026	102.45	115.00	100.20	112.95	112.95	13.35%	410,400
Jun 15, 2026	107.00	107.00	99.50	99.65	99.65	-1.39%	45,600
Jun 12, 2026	99.90	102.00	99.25	101.05	101.05	1.30%	22,800
Jun 11, 2026	97.55	102.20	97.55	99.75	99.75	-0.25%	64,800
Jun 10, 2026	99.05	101.95	99.00	100.00	100.00	1.01%	111,600
Jun 9, 2026	101.05	101.70	98.10	99.00	99.00	-2.13%	60,000
Jun 8, 2026	100.00	104.00	100.00	101.15	101.15	-0.83%	80,400
Jun 5, 2026	102.00	103.95	101.25	102.00	102.00	-0.05%	20,400
Jun 4, 2026	101.10	106.80	101.00	102.05	102.05	1.19%	118,800
Jun 3, 2026	100.60	102.50	100.10	100.85	100.85	-0.25%	6,000
Jun 2, 2026	102.10	102.10	99.25	101.10	101.10	-1.03%	25,200
Jun 1, 2026	110.00	111.00	101.00	102.15	102.15	-12.65%	123,600
May 29, 2026	113.00	117.00	113.00	116.95	116.95	0.73%	21,600
May 27, 2026	121.50	121.50	115.55	116.10	116.10	-4.29%	19,200
May 26, 2026	115.95	123.50	115.95	121.30	121.30	5.07%	63,600
May 25, 2026	109.00	116.10	109.00	115.45	115.45	6.90%	50,400
May 22, 2026	107.90	108.90	107.90	108.00	108.00	-	6,000
May 21, 2026	104.50	109.00	104.00	108.00	108.00	-0.55%	50,400
May 20, 2026	106.25	110.50	105.50	108.60	108.60	1.54%	16,800
May 19, 2026	103.90	108.40	103.90	106.95	106.95	-2.19%	136,800
May 18, 2026	113.00	113.00	109.35	109.35	109.35	-5.00%	43,200
May 15, 2026	112.50	116.05	112.50	115.10	115.10	4.12%	52,800
May 14, 2026	113.05	114.00	107.10	110.55	110.55	-1.91%	118,800
May 13, 2026	117.20	121.75	111.40	112.70	112.70	-3.88%	114,000
May 12, 2026	117.25	120.00	117.25	117.25	117.25	-4.98%	112,800
May 11, 2026	123.40	129.50	123.40	123.40	123.40	-4.97%	120,000
May 8, 2026	137.00	141.95	129.85	129.85	129.85	-4.98%	91,200
May 7, 2026	147.00	147.00	136.65	136.65	136.65	-4.97%	132,000
May 6, 2026	136.70	143.90	136.50	143.80	143.80	4.93%	103,200
May 5, 2026	140.00	140.00	136.90	137.05	137.05	-4.89%	73,200
May 4, 2026	145.05	149.00	144.10	144.10	144.10	-4.98%	96,000
Apr 30, 2026	146.00	152.60	142.00	151.65	151.65	4.33%	264,000
Apr 29, 2026	145.35	145.35	145.35	145.35	145.35	4.98%	147,600
Apr 28, 2026	138.45	138.45	138.45	138.45	138.45	4.97%	36,000
Apr 27, 2026	131.90	131.90	129.05	131.90	131.90	4.97%	193,200
Apr 24, 2026	119.70	125.65	117.10	125.65	125.65	4.97%	70,800
Apr 23, 2026	122.85	123.80	119.70	119.70	119.70	-1.48%	9,600
Apr 22, 2026	119.50	121.50	117.00	121.50	121.50	4.97%	82,800
Apr 21, 2026	119.95	120.40	114.70	115.75	115.75	-4.06%	55,200
Apr 20, 2026	125.00	125.00	120.65	120.65	120.65	-5.00%	73,200
Apr 17, 2026	124.90	127.50	122.65	127.00	127.00	4.57%	145,200
Apr 16, 2026	121.45	121.45	121.45	121.45	121.45	4.97%	112,800
Apr 15, 2026	115.65	115.70	111.70	115.70	115.70	4.99%	248,400
Apr 13, 2026	106.65	110.25	106.65	110.20	110.20	4.95%	85,200
Apr 10, 2026	107.00	109.80	105.00	105.00	105.00	-1.87%	13,200
Apr 9, 2026	106.00	107.00	106.00	107.00	107.00	-0.79%	7,200
Apr 8, 2026	106.00	107.90	101.15	107.85	107.85	3.75%	16,800
Apr 7, 2026	103.95	103.95	103.95	103.95	103.95	1.91%	2,400
Apr 6, 2026	102.35	103.20	102.00	102.00	102.00	-2.81%	16,800