American Century Ultra Fund (AULDX) NASDAQ

Currency In USD

AULDX Historical Return

If you invested $1000 in American Century Ultra Fund (AULDX) 10 years ago, it would be worth $8,230.47 as of September 12, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,790.31, while $1000 invested 1 year ago would be worth $1,083.79. This corresponds to total returns of 723.05%, 79.03%, 8.38%, respectively, with annualized returns of 23.45%, 12.35%, 8.38%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

AULDX Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low
September 11, 2026	106.59	107.49	107.49	107.49	106.59
September 10, 2026	106.59	106.59	106.59	106.59	106.59
September 09, 2026	107.6	107.6	107.6	107.6	107.6
September 08, 2026	108.01	108.01	108.01	108.01	108.01
September 04, 2026	109	108.45	108.45	109	108.45
September 03, 2026	107.41	107.41	107.41	107.41	107.41
September 02, 2026	107.41	107.41	107.41	107.41	107.41
September 01, 2026	106.94	106.94	106.94	106.94	106.94
August 31, 2026	108.57	108.57	108.57	108.57	108.57
August 28, 2026	109.72	108.7	108.7	109.72	108.7
August 27, 2026	107.44	109.72	109.72	109.72	107.44
August 26, 2026	107.44	107.44	107.44	107.44	107.44
August 25, 2026	107.63	107.63	107.63	107.63	107.63
August 24, 2026	106.95	106.95	106.95	106.95	106.95
August 21, 2026	108.13	108.13	108.13	108.13	108.13
August 20, 2026	107.37	107.37	107.37	107.37	107.37
August 19, 2026	108.42	108.42	108.42	108.42	108.42
August 18, 2026	110.47	108.52	108.52	110.47	108.52
August 17, 2026	110.47	110.13	110.13	110.47	110.13
August 14, 2026	110.47	110.47	110.47	110.47	110.47
August 13, 2026	111.06	111.06	111.06	111.06	111.06
August 12, 2026	109.98	109.98	109.98	109.98	109.98
August 11, 2026	109.97	109.25	109.25	109.97	109.25
August 10, 2026	109.97	109.97	109.97	109.97	109.97
August 07, 2026	109.01	110.11	110.11	110.11	109.01
August 06, 2026	109.01	109.01	109.01	109.01	109.01
August 05, 2026	109.55	109.55	109.55	109.55	109.55
August 04, 2026	109.73	109.73	109.73	109.73	109.73
August 03, 2026	107.28	107.28	107.28	107.28	107.28
July 31, 2026	102.79	102.79	102.79	102.79	102.79
July 30, 2026	100.35	100.35	100.35	100.35	100.35
July 29, 2026	100.35	100.35	100.35	100.35	100.35
July 28, 2026	102.12	102.12	102.12	102.12	102.12
July 27, 2026	102.46	102.46	102.46	102.46	102.46
July 23, 2026	103.43	103.43	103.43	103.43	103.43
July 22, 2026	105.74	105.74	105.74	105.74	105.74
July 21, 2026	106.34	106.34	106.34	106.34	106.34
July 20, 2026	105.1	105.1	105.1	105.1	105.1
July 17, 2026	105.13	105.13	105.13	105.13	105.13
July 16, 2026	107.12	107.12	107.12	107.12	107.12
July 15, 2026	108.96	108.96	108.96	108.96	108.96
July 14, 2026	108.28	108.28	108.28	108.28	108.28
July 13, 2026	107.06	107.06	107.06	107.06	107.06
July 10, 2026	108.61	108.61	108.61	108.61	108.61
July 09, 2026	108.38	108.38	108.38	108.38	108.38
July 08, 2026	107.41	107.41	107.41	107.41	107.41
July 07, 2026	107.23	107.23	107.23	107.23	107.23
July 06, 2026	107.95	107.95	107.95	107.95	107.95
July 02, 2026	106.72	106.72	106.72	106.72	106.72
July 01, 2026	107.78	107.78	107.78	107.78	107.78
June 30, 2026	108.41	108.41	108.41	108.41	108.41
June 29, 2026	106.77	106.77	106.77	106.77	106.77
June 26, 2026	104.3	104.3	104.3	104.3	104.3
June 25, 2026	104.04	104.04	104.04	104.04	104.04
June 24, 2026	104.54	104.54	104.54	104.54	104.54
June 23, 2026	104.69	104.69	104.69	104.69	104.69
June 22, 2026	108.4	108.4	108.4	108.4	108.4
June 18, 2026	108.4	108.4	108.4	108.4	108.4
June 17, 2026	106.79	106.79	106.79	106.79	106.79
June 16, 2026	108.17	108.17	108.17	108.17	108.17