ACI Worldwide Inc (ACIW) — Price History

As of 2026-08-07 — refreshed nightly from the Closelook data lake. Diary readings, not advice.

Daily prices

Date	Open	High	Low	Close	Chg %	Volume
2026-08-07	54.66	55.44	52.85	53.67	-2.81%	2,454,300
2026-08-06	52.90	57.01	51.07	55.22	-4.45%	1,883,200
2026-08-05	58.77	59.11	56.80	57.79	+1.03%	971,100
2026-08-04	56.84	57.53	55.73	57.20	-0.30%	2,120,200
2026-08-03	58.39	59.30	56.62	57.37	+0.07%	931,500
2026-07-31	57.00	57.72	56.68	57.33	-0.62%	733,000
2026-07-30	59.15	59.24	57.37	57.69	-4.14%	661,700
2026-07-29	60.06	61.08	59.68	60.18	+0.35%	1,086,600
2026-07-28	58.63	60.53	58.63	59.97	+3.61%	634,700
2026-07-27	57.27	58.21	57.00	57.88	+2.79%	951,600
2026-07-24	55.16	56.76	55.11	56.31	+3.26%	507,900
2026-07-23	54.64	55.28	53.98	54.53	-0.33%	583,100
2026-07-22	56.36	57.20	54.25	54.71	-3.49%	978,000
2026-07-21	55.71	57.00	55.70	56.69	-0.32%	869,376
2026-07-20	57.98	58.00	56.76	56.87	-2.07%	892,873
2026-07-17	58.17	60.17	57.57	58.07	-1.02%	1,892,600
2026-07-16	57.57	59.31	56.97	58.67	+2.86%	1,128,700
2026-07-15	55.20	57.27	55.20	57.04	+3.50%	2,287,600
2026-07-14	54.75	56.11	53.81	55.11	-2.34%	777,700
2026-07-13	56.91	57.60	56.35	56.43	+0.02%	758,100
2026-07-10	56.97	57.58	56.29	56.42	+0.04%	671,900
2026-07-09	54.70	56.54	54.05	56.40	+0.93%	1,040,300
2026-07-08	55.21	56.12	54.60	55.88	+0.47%	1,296,300
2026-07-07	57.03	57.04	55.60	55.62	-0.55%	1,066,000
2026-07-06	54.37	56.30	54.00	55.93	+1.91%	1,212,000
2026-07-02	52.91	54.95	52.81	54.88	+4.47%	1,231,100
2026-07-01	51.40	53.07	50.95	52.53	+4.45%	768,900
2026-06-30	49.19	50.35	49.01	50.29	+1.58%	1,048,700
2026-06-29	49.38	50.22	48.77	49.51	+0.51%	1,285,300
2026-06-26	47.05	49.63	47.05	49.26	+5.57%	2,807,600
2026-06-25	45.89	47.14	45.65	46.66	+0.58%	609,500
2026-06-24	45.04	47.28	45.04	46.39	+2.70%	706,000
2026-06-23	43.50	45.33	43.01	45.17	+5.24%	1,492,000
2026-06-22	43.71	44.75	42.55	42.92	-2.65%	1,505,200
2026-06-18	44.61	44.99	43.62	44.09	-1.23%	1,588,500
2026-06-17	44.95	46.15	44.51	44.64	-1.89%	1,153,500
2026-06-16	44.97	45.52	44.53	45.50	+1.59%	577,200
2026-06-15	45.36	45.65	44.71	44.79	-0.99%	805,100
2026-06-12	44.66	45.37	43.89	45.24	+1.98%	833,400
2026-06-11	43.37	44.57	42.79	44.36	+1.44%	975,800
2026-06-10	42.07	43.76	41.58	43.73	+2.56%	1,166,400
2026-06-09	42.56	43.18	42.09	42.64	+0.19%	782,700
2026-06-08	42.55	43.70	42.04	42.56	-0.56%	1,061,000
2026-06-05	42.36	43.13	42.03	42.80	+1.04%	709,300
2026-06-04	42.73	42.90	41.95	42.36	+1.92%	756,300
2026-06-03	43.61	43.61	40.70	41.56	-4.92%	956,000
2026-06-02	44.11	44.63	43.36	43.71	-2.93%	630,800
2026-06-01	44.34	45.49	43.51	45.03	+3.11%	1,009,300
2026-05-29	42.73	44.09	42.59	43.67	+3.00%	1,070,100
2026-05-28	42.26	42.73	42.02	42.40	+0.19%	470,100
2026-05-27	41.58	43.06	41.58	42.32	-0.07%	847,600
2026-05-26	42.17	42.76	41.84	42.35	-0.87%	525,400
2026-05-22	42.52	43.42	42.25	42.72	+0.47%	512,000
2026-05-21	42.81	43.03	41.42	42.52	-1.69%	469,600
2026-05-20	42.37	43.37	41.59	43.25	+1.55%	511,200
2026-05-19	43.39	44.00	42.32	42.59	-0.49%	667,500
2026-05-18	41.67	43.53	41.58	42.80	+2.74%	926,500
2026-05-15	41.31	42.23	40.93	41.66	+1.93%	808,000
2026-05-14	41.24	41.44	40.00	40.87	+0.15%	675,400
2026-05-13	41.70	42.06	40.54	40.81	-3.25%	701,200
2026-05-12	42.93	43.15	41.82	42.18	-0.42%	788,100
2026-05-11	44.89	45.30	42.09	42.36	-6.92%	987,300
2026-05-08	46.10	46.73	45.02	45.51	-2.44%	912,500
2026-05-07	47.30	48.54	45.46	46.65	+7.81%	1,323,800
2026-05-06	44.14	44.33	42.95	43.27	-2.02%	871,700
2026-05-05	44.36	44.56	43.65	44.16	-0.27%	487,200
2026-05-04	43.71	44.98	43.71	44.28	+0.96%	496,900
2026-05-01	44.05	44.73	43.31	43.86	+1.48%	531,900
2026-04-30	43.04	43.55	42.59	43.22	-0.87%	722,200
2026-04-29	43.12	44.03	43.12	43.60	-0.77%	547,700
2026-04-28	43.93	44.40	43.44	43.94	+1.31%	610,900
2026-04-27	42.84	44.06	42.37	43.37	+0.42%	573,200
2026-04-24	42.20	43.21	41.83	43.19	+2.32%	576,000
2026-04-23	43.60	44.57	41.50	42.21	-4.61%	637,500
2026-04-22	44.82	44.86	43.76	44.25	+0.07%	542,700
2026-04-21	45.21	46.04	44.06	44.22	-2.06%	1,342,900
2026-04-20	44.10	45.46	44.10	45.15	+1.53%	1,304,500
2026-04-17	44.05	44.99	43.63	44.47	+3.90%	1,182,900
2026-04-16	42.81	43.14	42.04	42.80	+0.75%	1,102,900
2026-04-15	41.70	42.87	41.70	42.48	+2.48%	723,700
2026-04-14	41.33	42.08	41.09	41.45	+0.51%	548,600
2026-04-13	39.73	41.37	39.61	41.24	+3.38%	910,700
2026-04-10	40.77	40.77	39.52	39.89	-2.11%	447,300
2026-04-09	40.93	40.93	39.35	40.75	-1.52%	658,000
2026-04-08	41.97	42.17	41.36	41.38	+1.47%	865,400
2026-04-07	41.10	41.34	40.67	40.78	-0.85%	440,800
2026-04-06	41.34	41.47	40.92	41.13	-0.48%	436,600
2026-04-02	40.64	41.60	39.80	41.33	+0.90%	739,800
2026-04-01	41.16	41.50	40.50	40.96	-0.12%	647,500
2026-03-31	40.88	41.30	40.19	41.01	+1.74%	604,700
2026-03-30	40.70	40.86	40.02	40.31	+1.08%	781,800
2026-03-27	40.25	40.25	39.31	39.88	-2.40%	663,900
2026-03-26	40.10	41.23	39.86	40.86	+2.05%	626,300
2026-03-25	40.13	40.80	38.70	40.04	+0.45%	786,200
2026-03-24	40.40	40.52	39.45	39.86	-2.52%	677,000
2026-03-23	40.47	41.08	39.93	40.89	+3.68%	748,100
2026-03-20	39.62	39.87	38.95	39.44	-0.60%	1,382,800
2026-03-19	39.08	39.84	38.80	39.68	+1.41%	756,700
2026-03-18	39.47	40.06	39.10	39.13	-1.83%	574,800
2026-03-17	39.77	41.01	39.67	39.86	+0.78%	551,200
2026-03-16	39.99	40.22	39.31	39.55	-0.55%	587,700
2026-03-13	40.63	41.47	39.51	39.77	-1.63%	535,600
2026-03-12	40.96	41.92	40.32	40.43	-2.44%	821,600
2026-03-11	42.30	42.87	40.77	41.44	-1.50%	804,200
2026-03-10	42.72	43.00	41.27	42.07	-1.31%	950,142
2026-03-09	42.09	43.01	40.89	42.63	+0.19%	948,560
2026-03-06	42.41	42.87	41.68	42.55	-0.72%	778,700
2026-03-05	42.37	42.91	41.69	42.86	+0.99%	783,200
2026-03-04	42.43	42.85	41.34	42.44	+2.49%	926,200
2026-03-03	40.19	41.94	39.65	41.41	+2.63%	735,600
2026-03-02	39.08	41.16	38.74	40.35	+1.69%	1,124,200
2026-02-27	39.59	40.07	39.24	39.68	-0.30%	1,381,400
2026-02-26	40.23	41.07	38.05	39.80	-4.05%	2,684,400
2026-02-25	39.20	41.66	38.84	41.48	+6.14%	1,756,600
2026-02-24	38.49	39.71	38.49	39.08	+1.59%	857,200
2026-02-23	40.78	41.07	38.20	38.47	-5.90%	800,700
2026-02-20	40.75	41.62	40.51	40.88	+0.32%	620,000
2026-02-19	40.63	40.81	40.20	40.75	+0.39%	519,500
2026-02-18	40.77	41.20	40.53	40.59	+0.02%	712,300
2026-02-17	40.31	41.08	40.17	40.58	+2.58%	957,800
2026-02-13	39.66	40.50	39.52	39.56	+0.74%	652,144
2026-02-12	40.49	41.25	38.53	39.27	-2.63%	875,851
2026-02-11	42.45	42.64	40.28	40.33	-4.93%	1,389,050
2026-02-10	41.97	42.74	41.83	42.42	+1.41%	505,961
2026-02-09	41.93	42.15	41.45	41.83	-1.06%	611,824
2026-02-06	41.17	42.40	41.17	42.28	+3.98%	951,977
2026-02-05	41.57	42.20	40.49	40.66	-0.76%	1,072,765
2026-02-04	39.26	41.42	38.89	40.97	+3.67%	925,171
2026-02-03	42.77	42.83	38.89	39.52	-9.04%	2,170,950
2026-02-02	43.36	44.51	43.05	43.45	+0.21%	982,947
2026-01-30	43.08	44.06	42.82	43.36	+0.37%	1,140,638
2026-01-29	43.32	43.45	41.86	43.20	-0.69%	922,764
2026-01-28	44.92	45.28	43.44	43.50	-2.68%	651,516
2026-01-27	44.87	44.87	43.83	44.70	-0.25%	659,214
2026-01-26	44.03	45.02	44.01	44.81	+1.77%	626,314
2026-01-23	43.73	44.13	43.34	44.03	+0.69%	489,089
2026-01-22	43.12	44.04	43.12	43.73	+1.93%	598,961
2026-01-21	42.50	43.30	42.48	42.90	+1.20%	635,258
2026-01-20	42.35	43.11	42.00	42.39	-1.40%	551,875
2026-01-16	43.49	44.05	42.65	42.99	-1.15%	732,534
2026-01-15	45.47	45.72	43.40	43.49	-4.35%	971,229
2026-01-14	45.46	45.66	44.86	45.47	-0.35%	426,304
2026-01-13	47.03	47.53	45.12	45.63	-3.12%	468,729
2026-01-12	46.47	47.41	46.05	47.10	+0.71%	540,372
2026-01-09	46.62	47.11	45.99	46.77	+0.15%	428,191
2026-01-08	45.89	47.08	45.75	46.70	+1.30%	806,670
2026-01-07	45.94	46.20	45.40	46.10	+1.36%	647,813
2026-01-06	45.86	45.87	45.24	45.48	-0.98%	679,361
2026-01-05	45.37	47.01	45.37	45.93	+0.57%	948,263
2026-01-02	48.01	48.01	45.59	45.67	-4.48%	533,975
2025-12-31	48.11	48.25	47.76	47.81	-0.64%	474,151
2025-12-30	48.44	48.76	48.09	48.12	-0.99%	333,202
2025-12-29	48.68	49.70	48.25	48.60	-0.27%	319,341
2025-12-26	48.79	49.10	48.31	48.73	-0.29%	279,147
2025-12-24	48.92	49.07	48.54	48.87	+0.37%	262,244
2025-12-23	48.69	49.33	48.33	48.69	-0.51%	545,086
2025-12-22	48.10	49.44	48.10	48.94	+1.66%	668,513
2025-12-19	48.14	48.57	47.91	48.14	-0.33%	2,161,902
2025-12-18	48.21	48.80	48.06	48.30	+0.21%	685,047
2025-12-17	48.03	48.87	47.76	48.20	+0.31%	687,421
2025-12-16	46.81	48.36	46.81	48.05	+2.96%	1,359,688
2025-12-15	47.78	47.78	46.53	46.67	-1.81%	773,912
2025-12-12	47.50	47.99	47.33	47.53	+0.15%	689,453
2025-12-11	46.89	47.77	46.30	47.46	+1.41%	1,250,176
2025-12-10	45.10	47.33	45.10	46.80	+2.93%	686,307
2025-12-09	45.43	45.97	45.33	45.47	+0.46%	446,990
2025-12-08	46.34	46.34	45.12	45.26	-1.42%	620,491
2025-12-05	46.25	46.91	45.83	45.91	-0.95%	853,914
2025-12-04	46.96	47.14	46.23	46.35	-1.55%	581,155
2025-12-03	46.42	47.13	46.21	47.08	+1.25%	606,417
2025-12-02	46.59	46.90	46.20	46.50	+0.74%	567,415
2025-12-01	46.35	46.80	46.01	46.16	-1.49%	706,164
2025-11-28	47.13	47.20	46.71	46.86	+0.00%	259,846
2025-11-26	47.20	47.51	46.74	46.86	-0.76%	883,955
2025-11-25	47.08	47.83	47.08	47.22	+1.01%	610,074
2025-11-24	46.62	47.01	46.16	46.75	+0.30%	817,128
2025-11-21	45.66	47.29	45.66	46.61	+2.08%	778,539
2025-11-20	47.05	47.54	45.61	45.66	-1.42%	710,173
2025-11-19	46.42	46.67	45.91	46.32	+0.13%	583,987
2025-11-18	46.03	46.61	45.73	46.26	-0.09%	723,123
2025-11-17	46.78	47.13	46.02	46.30	-1.42%	943,100
2025-11-14	46.76	47.10	46.41	46.97	-0.41%	612,270
2025-11-13	47.11	47.58	46.77	47.16	-0.86%	668,147
2025-11-12	48.22	48.77	47.47	47.57	-0.90%	872,205
2025-11-11	47.63	48.77	47.14	48.00	+1.10%	883,735
2025-11-10	48.98	49.15	47.34	47.48	-3.02%	885,376
2025-11-07	50.50	50.51	48.92	48.96	-3.30%	831,568
2025-11-06	49.20	52.28	48.53	50.63	+4.95%	1,521,067
2025-11-05	47.48	48.38	47.41	48.24	+1.84%	692,277
2025-11-04	47.64	47.72	46.92	47.37	-0.63%	492,827
2025-11-03	47.63	47.73	46.61	47.67	+0.08%	982,627
2025-10-31	47.05	47.67	46.86	47.63	+0.85%	750,820
2025-10-30	47.23	48.53	46.67	47.23	-0.23%	1,234,426
2025-10-29	49.35	49.56	46.97	47.34	-4.84%	1,037,695
2025-10-28	50.21	50.50	49.66	49.75	-0.92%	482,238
2025-10-27	50.87	50.91	49.98	50.21	-0.38%	398,594
2025-10-24	50.54	50.88	50.19	50.40	+0.76%	407,709
2025-10-23	49.49	50.18	49.02	50.02	+1.01%	350,313
2025-10-22	49.61	50.13	49.11	49.52	-0.18%	637,843
2025-10-21	49.32	50.20	48.56	49.61	+1.22%	571,800
2025-10-20	49.16	49.66	48.65	49.01	+0.53%	730,197
2025-10-17	47.83	48.88	47.55	48.75	+1.18%	800,782
2025-10-16	51.14	51.20	48.05	48.18	-4.63%	967,300
2025-10-15	51.71	52.08	50.28	50.52	-1.86%	522,697
2025-10-14	50.21	51.82	50.21	51.48	+0.94%	400,960
2025-10-13	51.55	51.55	50.56	51.00	-0.02%	420,599
2025-10-10	52.50	52.64	50.63	51.01	-2.62%	499,316
2025-10-09	52.89	52.89	51.63	52.38	-0.96%	481,407
2025-10-08	52.93	53.33	52.23	52.89	+0.38%	605,026
2025-10-07	53.48	53.64	52.66	52.69	-1.66%	575,198
2025-10-06	53.79	54.24	53.10	53.58	-0.07%	846,089
2025-10-03	53.02	54.28	53.02	53.62	+1.13%	682,395
2025-10-02	52.86	53.17	52.51	53.02	+0.53%	588,337
2025-10-01	52.49	52.91	52.13	52.74	-0.06%	847,111
2025-09-30	52.34	52.82	51.41	52.77	+0.82%	843,514
2025-09-29	52.42	52.61	52.00	52.34	+0.15%	838,120
2025-09-26	51.67	52.45	51.30	52.26	+1.06%	475,985
2025-09-25	52.01	52.02	51.11	51.71	-1.09%	566,972
2025-09-24	52.61	52.99	52.20	52.28	-0.15%	494,513
2025-09-23	53.07	53.45	52.19	52.36	-1.02%	960,076
2025-09-22	50.80	53.02	50.16	52.90	+3.95%	1,513,139
2025-09-19	51.35	51.47	50.16	50.89	-0.47%	2,918,499
2025-09-18	50.09	51.25	49.89	51.13	+2.75%	894,207
2025-09-17	49.77	51.19	49.55	49.76	+0.77%	833,460
2025-09-16	49.51	49.51	48.83	49.38	-0.42%	812,567
2025-09-15	50.28	50.54	49.57	49.59	-1.12%	677,159
2025-09-12	50.79	50.94	50.12	50.15	-0.95%	888,541
2025-09-11	50.48	50.91	49.43	50.63	+1.08%	915,070
2025-09-10	51.23	51.64	49.88	50.09	-2.23%	1,057,241
2025-09-09	51.35	51.35	50.27	51.23	+0.04%	725,182
2025-09-08	50.79	51.30	49.48	51.21	+1.91%	1,432,846
2025-09-05	49.96	50.99	49.87	50.25	+1.23%	709,531
2025-09-04	49.24	49.67	48.41	49.64	+0.96%	800,780
2025-09-03	48.99	49.22	48.57	49.17	+0.39%	1,140,336
2025-09-02	48.74	49.21	48.45	48.98	-0.75%	756,062
2025-08-29	49.29	49.42	48.88	49.35	+0.30%	789,288
2025-08-28	48.54	49.22	48.17	49.20	+1.46%	849,854
2025-08-27	48.10	48.50	47.81	48.49	+0.73%	691,965
2025-08-26	48.64	48.90	48.13	48.14	-1.27%	1,607,840
2025-08-25	49.28	49.51	48.72	48.76	-1.12%	682,678
2025-08-22	48.13	49.83	48.13	49.31	+3.01%	773,957
2025-08-21	46.96	47.91	46.62	47.87	+1.66%	1,054,670
2025-08-20	46.98	47.25	46.78	47.09	+0.13%	823,955
2025-08-19	47.35	47.77	46.97	47.03	-0.47%	520,817
2025-08-18	46.56	47.36	46.23	47.25	+1.48%	573,838
2025-08-15	46.83	46.83	45.94	46.56	-0.11%	763,641
2025-08-14	47.03	47.03	46.29	46.61	-1.44%	919,625
2025-08-13	46.52	47.62	46.29	47.29	+2.05%	1,117,867
2025-08-12	44.53	46.48	44.49	46.34	+4.39%	1,155,770
2025-08-11	44.58	45.13	44.29	44.39	-0.36%	934,996

Most recent 250 sessions, newest first.

Seasonal returns

Best month historically: Aug (+15.61%). Worst month: May (-7.31%). Based on 3 years of daily data (2024–2026).

Jan-1.62%
Feb-0.65%
Mar+0.60%
Apr-0.19%
May-7.31%
Jun+7.73%
Jul+4.04%
Aug+15.61%
Sep+5.86%
Oct-6.09%
Nov+6.56%
Dec-2.79%

FAQ · from the current price data · as of 2026-08-07

Quick answers

What is ACI Worldwide Inc's (ACIW) latest close?

53.67 on 2026-08-07, from the Closelook data lake's daily price record.

What is ACIW's 52-week high and low?

61.08 high and 38.05 low over the trailing 52 weeks, as of 2026-08-07.

What is ACI Worldwide Inc's strongest and weakest month historically?

Historically, ACIW's strongest calendar month has been Aug (average +15.61%) and its weakest May (average -7.31%), based on 3 years of daily data (2024–2026).

How many years of seasonality does this cover?

3 years (2024–2026), computed from 547 daily bars in the Closelook data lake.