Quest Laboratories Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Jul 13, 2026	94.00	94.00	91.15	91.20	91.20	-	38,400
Jul 10, 2026	92.00	94.85	90.15	91.20	91.20	2.47%	66,000
Jul 9, 2026	88.00	89.00	88.00	89.00	89.00	1.42%	2,400
Jul 8, 2026	88.00	88.55	87.00	87.75	87.75	-0.28%	18,000
Jul 7, 2026	89.00	91.80	88.00	88.00	88.00	-3.08%	19,200
Jul 6, 2026	95.05	95.05	89.55	90.80	90.80	-4.37%	69,600
Jul 3, 2026	95.00	96.50	92.00	94.95	94.95	1.28%	50,400
Jul 2, 2026	92.30	95.00	92.30	93.75	93.75	-2.50%	37,200
Jul 1, 2026	98.35	98.35	94.00	96.15	96.15	-1.99%	38,400
Jun 30, 2026	99.00	99.00	98.05	98.10	98.10	0.15%	15,600
Jun 29, 2026	99.00	99.50	97.90	97.95	97.95	-0.10%	7,200
Jun 25, 2026	101.50	101.50	97.20	98.05	98.05	-1.56%	25,200
Jun 24, 2026	104.50	104.50	99.10	99.60	99.60	-2.11%	72,000
Jun 23, 2026	101.00	101.75	100.50	101.75	101.75	0.05%	22,800
Jun 22, 2026	102.80	103.00	101.60	101.70	101.70	-1.07%	31,200
Jun 19, 2026	106.00	108.80	101.15	102.80	102.80	-5.47%	112,800
Jun 18, 2026	114.05	114.05	106.60	108.75	108.75	-6.45%	132,000
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