TTEK Historical Stock Prices & CSV Downloads

Tetra Tech, Inc. (TTEK), daily historical prices. Prices in USD.
Date	Open	High	Low	Close		Volume
Oct 30, 2026	38.35	38.76	37.98	38.65	38.65	3,281,800
Oct 29, 2026	37.14	38.12	37.14	38.09	38.09	1,977,300
Oct 28, 2026	36.79	37.01	36.35	36.78	36.78	1,926,800
Oct 27, 2026	36.96	37.13	36.54	36.87	36.87	2,065,400
Oct 26, 2026	36.92	37.47	36.88	37.13	37.13	2,591,000
Oct 23, 2026	36.66	37.00	35.90	36.98	36.98	1,803,900
Oct 22, 2026	35.24	36.82	35.17	36.81	36.81	2,540,200
Oct 21, 2026	35.00	35.42	34.98	35.05	35.05	1,621,000
Oct 20, 2026	34.69	35.08	34.59	34.96	34.96	1,496,200
Oct 19, 2026	34.49	34.80	34.38	34.63	34.63	1,435,700
Oct 16, 2026	34.93	35.17	34.52	34.72	34.72	1,407,200
Oct 15, 2026	33.56	34.97	33.56	34.78	34.78	2,312,800
Oct 14, 2026	33.63	34.03	33.29	33.61	33.61	2,260,300
Oct 13, 2026	33.63	33.90	33.18	33.54	33.54	1,610,000
Oct 12, 2026	33.45	33.87	33.41	33.49	33.49	1,486,100
Oct 9, 2026	33.41	33.70	33.21	33.34	33.34	1,616,000
Oct 8, 2026	32.78	33.43	32.23	33.41	33.41	1,519,100
Oct 7, 2026	33.17	33.31	32.02	32.72	32.72	1,906,100
Oct 6, 2026	33.33	33.58	33.15	33.38	33.38	1,538,100
Oct 5, 2026	33.05	33.55	32.57	33.33	33.33	2,818,400
Oct 2, 2026	33.78	33.93	32.95	33.12	33.12	1,913,000
Oct 1, 2026	33.06	33.87	32.92	33.72	33.72	1,934,200
Sep 30, 2026	33.64	33.86	32.91	32.95	32.95	2,616,900
Sep 29, 2026	33.73	34.25	33.54	33.70	33.70	1,488,400
Sep 28, 2026	33.58	34.01	33.25	33.89	33.89	1,932,600

Historical stock data.