ACIW Historical Stock Prices & CSV Downloads

ACI Worldwide, Inc. (ACIW), daily historical prices. Prices in USD.
Date	Open	High	Low	Close		Volume
Oct 30, 2026	56.45	56.45	55.44	56.34	56.34	596,900
Oct 29, 2026	55.29	55.87	54.48	55.70	55.70	656,100
Oct 28, 2026	54.55	55.23	53.89	55.20	55.20	739,600
Oct 27, 2026	55.30	55.69	54.50	54.66	54.66	1,015,400
Oct 26, 2026	55.91	56.70	55.28	55.68	55.68	850,700
Oct 23, 2026	55.57	56.18	54.94	55.88	55.88	833,100
Oct 22, 2026	54.76	56.34	53.69	56.19	56.19	1,020,800
Oct 21, 2026	54.54	54.70	53.82	53.86	53.86	740,600
Oct 20, 2026	52.76	54.70	52.76	54.54	54.54	1,199,100
Oct 19, 2026	52.06	53.34	52.06	52.22	52.22	743,800
Oct 16, 2026	53.00	53.44	51.55	52.80	52.80	837,000
Oct 15, 2026	51.77	52.77	51.65	52.55	52.55	843,300
Oct 14, 2026	50.94	51.24	50.52	51.07	51.07	602,200
Oct 13, 2026	51.47	52.00	51.01	51.20	51.20	541,500
Oct 12, 2026	50.99	51.56	50.99	51.06	51.06	581,400
Oct 9, 2026	51.31	51.57	50.39	50.87	50.87	463,400
Oct 8, 2026	50.56	51.15	50.18	51.07	51.07	493,800
Oct 7, 2026	50.25	50.97	50.25	50.65	50.65	587,500
Oct 6, 2026	51.60	51.60	50.19	50.71	50.71	730,900
Oct 5, 2026	50.16	51.65	50.15	51.22	51.22	1,007,400
Oct 2, 2026	50.44	50.91	49.59	50.15	50.15	577,600
Oct 1, 2026	49.28	50.26	49.11	49.69	49.69	840,600
Sep 30, 2026	48.20	49.37	47.81	48.88	48.88	1,121,400
Sep 29, 2026	48.75	49.20	48.31	48.59	48.59	648,000
Sep 28, 2026	48.51	49.18	48.28	49.00	49.00	465,800

Historical stock data.