AMTM Historical Stock Prices & CSV Downloads

Amentum Holdings, Inc. (AMTM), daily historical prices. Prices in USD.
Date	Open	High	Low	Close		Volume
Oct 30, 2026	22.06	22.47	21.58	21.87	21.87	3,043,000
Oct 29, 2026	22.00	22.37	21.93	22.07	22.07	2,022,200
Oct 28, 2026	21.59	21.90	21.36	21.69	21.69	1,659,700
Oct 27, 2026	21.97	22.24	21.73	21.75	21.75	2,006,600
Oct 26, 2026	21.80	22.50	21.80	22.07	22.07	1,854,400
Oct 23, 2026	21.02	21.79	20.64	21.76	21.76	2,079,500
Oct 22, 2026	20.09	21.35	20.04	21.29	21.29	2,404,200
Oct 21, 2026	19.97	20.38	19.82	20.15	20.15	1,628,800
Oct 20, 2026	19.46	19.94	19.27	19.87	19.87	1,384,000
Oct 19, 2026	19.43	19.60	19.27	19.48	19.48	1,223,100
Oct 16, 2026	19.16	19.59	18.97	19.52	19.52	2,088,700
Oct 15, 2026	18.23	19.14	18.23	19.09	19.09	1,479,000
Oct 14, 2026	18.33	18.67	18.00	18.13	18.13	1,071,900
Oct 13, 2026	18.97	18.97	18.47	18.52	18.52	1,215,800
Oct 12, 2026	19.40	19.47	18.91	18.92	18.92	1,614,100
Oct 9, 2026	19.06	19.40	18.96	19.29	19.29	1,270,700
Oct 8, 2026	18.37	18.97	18.10	18.97	18.97	3,412,000
Oct 7, 2026	18.59	18.70	18.09	18.51	18.51	1,776,200
Oct 6, 2026	18.41	18.93	18.31	18.77	18.77	1,892,800
Oct 5, 2026	18.12	18.63	18.02	18.24	18.24	1,999,100
Oct 2, 2026	18.59	18.59	17.72	18.14	18.14	2,310,900
Oct 1, 2026	18.22	18.75	18.08	18.48	18.48	1,724,200
Sep 30, 2026	18.24	18.41	18.06	18.12	18.12	1,631,800
Sep 29, 2026	18.48	18.58	17.89	18.15	18.15	2,954,300
Sep 28, 2026	19.00	19.04	18.48	18.49	18.49	1,190,200

Historical stock data.