American Century Ultra Fund (AULDX) NASDAQ
Currency In USD
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Currency In USD
If you invested $1000 in American Century Ultra Fund (AULDX) 10 years ago, it would be worth $8,133.38 as of October 22, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,788.7, while $1000 invested 1 year ago would be worth $1,065.24. This corresponds to total returns of 713.34%, 78.87%, 6.52%, respectively, with annualized returns of 23.32%, 12.33%, 6.52%.
Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.
Date Range:
| Date | Open | Close | Adj Close | High | Low | Volume |
|---|---|---|---|---|---|---|
| October 21, 2026 | 109.13 | 109.13 | 109.13 | 109.13 | 109.13 | 0 |
| October 20, 2026 | 107.93 | 107.93 | 107.93 | 107.93 | 107.93 | 0 |
| October 19, 2026 | 108.19 | 108.19 | 108.19 | 108.19 | 108.19 | 0 |
| October 16, 2026 | 109.48 | 106.91 | 106.91 | 109.48 | 106.91 | 0 |
| October 15, 2026 | 109.67 | 109.48 | 109.48 | 109.67 | 109.48 | 0 |
| October 14, 2026 | 109.67 | 109.67 | 109.67 | 109.67 | 109.67 | 0 |
| October 13, 2026 | 112.26 | 112.26 | 112.26 | 112.26 | 112.26 | 0 |
| October 12, 2026 | 113.3 | 112.47 | 112.47 | 113.3 | 112.47 | 0 |
| October 09, 2026 | 113.3 | 113.3 | 113.3 | 113.3 | 113.3 | 0 |
| October 08, 2026 | 111.95 | 111.95 | 111.95 | 111.95 | 111.95 | 0 |
| October 07, 2026 | 113.37 | 113.37 | 113.37 | 113.37 | 113.37 | 0 |
| October 06, 2026 | 113.72 | 113.72 | 113.72 | 113.72 | 113.72 | 0 |
| October 05, 2026 | 112.94 | 112.94 | 112.94 | 112.94 | 112.94 | 0 |
| October 02, 2026 | 111.84 | 111.84 | 111.84 | 111.84 | 111.84 | 0 |
| October 01, 2026 | 110.51 | 110.51 | 110.51 | 110.51 | 110.51 | 0 |
| September 30, 2026 | 109.97 | 109.97 | 109.97 | 109.97 | 109.97 | 0 |
| September 29, 2026 | 110.04 | 110.04 | 110.04 | 110.04 | 110.04 | 0 |
| September 28, 2026 | 110.04 | 110.04 | 110.04 | 110.04 | 110.04 | 0 |
| September 25, 2026 | 110.76 | 110.76 | 110.76 | 110.76 | 110.76 | 0 |
| September 24, 2026 | 110.21 | 110.21 | 110.21 | 110.21 | 110.21 | 0 |
| September 23, 2026 | 109.76 | 109.76 | 109.76 | 109.76 | 109.76 | 0 |
| September 22, 2026 | 110.94 | 110.94 | 110.94 | 110.94 | 110.94 | 0 |
| September 21, 2026 | 107.97 | 110.76 | 110.76 | 110.76 | 107.97 | 0 |
| September 18, 2026 | 107.97 | 107.97 | 107.97 | 107.97 | 107.97 | 0 |
| September 17, 2026 | 107.54 | 107.54 | 107.54 | 107.54 | 107.54 | 0 |
| September 16, 2026 | 105.84 | 105.84 | 105.84 | 105.84 | 105.84 | 0 |
| September 15, 2026 | 105.85 | 105.85 | 105.85 | 105.85 | 105.85 | 0 |
| September 11, 2026 | 106.59 | 107.49 | 107.49 | 107.49 | 106.59 | 0 |
| September 10, 2026 | 106.59 | 106.59 | 106.59 | 106.59 | 106.59 | 0 |
| September 09, 2026 | 107.6 | 107.6 | 107.6 | 107.6 | 107.6 | 0 |
| September 08, 2026 | 108.01 | 108.01 | 108.01 | 108.01 | 108.01 | 0 |
| September 04, 2026 | 109 | 108.45 | 108.45 | 109 | 108.45 | 0 |
| September 03, 2026 | 107.41 | 107.41 | 107.41 | 107.41 | 107.41 | 0 |
| September 02, 2026 | 107.41 | 107.41 | 107.41 | 107.41 | 107.41 | 0 |
| September 01, 2026 | 106.94 | 106.94 | 106.94 | 106.94 | 106.94 | 0 |
| August 31, 2026 | 108.57 | 108.57 | 108.57 | 108.57 | 108.57 | 0 |
| August 28, 2026 | 109.72 | 108.7 | 108.7 | 109.72 | 108.7 | 0 |
| August 27, 2026 | 107.44 | 109.72 | 109.72 | 109.72 | 107.44 | 0 |
| August 26, 2026 | 107.44 | 107.44 | 107.44 | 107.44 | 107.44 | 0 |
| August 25, 2026 | 107.63 | 107.63 | 107.63 | 107.63 | 107.63 | 0 |
| August 24, 2026 | 106.95 | 106.95 | 106.95 | 106.95 | 106.95 | 0 |
| August 21, 2026 | 108.13 | 108.13 | 108.13 | 108.13 | 108.13 | 0 |
| August 20, 2026 | 107.37 | 107.37 | 107.37 | 107.37 | 107.37 | 0 |
| August 19, 2026 | 108.42 | 108.42 | 108.42 | 108.42 | 108.42 | 0 |
| August 18, 2026 | 110.47 | 108.52 | 108.52 | 110.47 | 108.52 | 0 |
| August 17, 2026 | 110.47 | 110.13 | 110.13 | 110.47 | 110.13 | 0 |
| August 14, 2026 | 110.47 | 110.47 | 110.47 | 110.47 | 110.47 | 0 |
| August 13, 2026 | 111.06 | 111.06 | 111.06 | 111.06 | 111.06 | 0 |
| August 12, 2026 | 109.98 | 109.98 | 109.98 | 109.98 | 109.98 | 0 |
| August 11, 2026 | 109.97 | 109.25 | 109.25 | 109.97 | 109.25 | 0 |
| August 10, 2026 | 109.97 | 109.97 | 109.97 | 109.97 | 109.97 | 0 |
| August 07, 2026 | 109.01 | 110.11 | 110.11 | 110.11 | 109.01 | 0 |
| August 06, 2026 | 109.01 | 109.01 | 109.01 | 109.01 | 109.01 | 0 |
| August 05, 2026 | 109.55 | 109.55 | 109.55 | 109.55 | 109.55 | 0 |
| August 04, 2026 | 109.73 | 109.73 | 109.73 | 109.73 | 109.73 | 0 |
| August 03, 2026 | 107.28 | 107.28 | 107.28 | 107.28 | 107.28 | 0 |
| July 31, 2026 | 102.79 | 102.79 | 102.79 | 102.79 | 102.79 | 0 |
| July 30, 2026 | 100.35 | 100.35 | 100.35 | 100.35 | 100.35 | 0 |
| July 29, 2026 | 100.35 | 100.35 | 100.35 | 100.35 | 100.35 | 0 |
| July 28, 2026 | 102.12 | 102.12 | 102.12 | 102.12 | 102.12 | 0 |