Shareholder Report
Jun. 30, 2025
USD ($)
Holding
®
– American Century Diversified Bond Fund (the Fund) for the period of January 1, 2025 to June 30, 2025.
columbiathreadneedleus.com/resources/literature
. You can also request more information by contacting us at 1-800-345-6611.
What were the Fund costs for the reporting period?
(Based on a
hypothetical
$10,000 investment)| Class | Cost of a $10,000 investment | Cost paid as a percentage of a $10,000 investment |
| Class 1 | $ 25 | 0.49 % (a) |
| (a) | Annualized. |
Key Fund Statistics
Fund net assets | $ 3,378,520,049 |
Total number of portfolio holdings | 624 |
Portfolio turnover for the reporting period | 129% |
Graphical Representation of Fund Holdings
The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's
portfolio
composition is subject to change.Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a rating agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Top Holdings
| Uniform Mortgage-Backed Security TBA 07/14/2055 5.000% | 5.2 % |
| Uniform Mortgage-Backed Security TBA 07/14/2055 5.500% | 3.7 % |
| U.S. Treasury 05/31/2030 4.000% | 3.7 % |
| U.S. Treasury 03/31/2029 4.125% | 2.1 % |
| Uniform Mortgage-Backed Security TBA 07/14/2055 3.500% | 1.5 % |
| U.S. Treasury 11/30/2030 4.375% | 1.3 % |
| Government National Mortgage Association TBA 07/21/2055 4.000% | 1.0 % |
| Federal National Mortgage Association 12/01/2052 6.000% | 1.0 % |
| Federal National Mortgage Association 09/01/2050 2.500% | 1.0 % |
| Federal National Mortgage Association 01/01/2052 3.000% | 0.9 % |
Asset Categories
Credit Quality
Top Holdings
| Uniform Mortgage-Backed Security TBA 07/14/2055 5.000% | 5.2 % |
| Uniform Mortgage-Backed Security TBA 07/14/2055 5.500% | 3.7 % |
| U.S. Treasury 05/31/2030 4.000% | 3.7 % |
| U.S. Treasury 03/31/2029 4.125% | 2.1 % |
| Uniform Mortgage-Backed Security TBA 07/14/2055 3.500% | 1.5 % |
| U.S. Treasury 11/30/2030 4.375% | 1.3 % |
| Government National Mortgage Association TBA 07/21/2055 4.000% | 1.0 % |
| Federal National Mortgage Association 12/01/2052 6.000% | 1.0 % |
| Federal National Mortgage Association 09/01/2050 2.500% | 1.0 % |
| Federal National Mortgage Association 01/01/2052 3.000% | 0.9 % |
®
– American Century Diversified Bond Fund (the Fund) for the period of January 1, 2025 to June 30, 2025.
columbiathreadneedleus.com/resources/literature
. You can also request more information by contacting us at 1-800-345-6611.
What were the Fund costs for the reporting period?
(Based on a hypothetical $10,000 investment)
| Class | Cost of a $10,000 investment | Cost paid as a percentage of a $10,000 investment |
| Class 2 | $ 37 | 0.74 % (a) |
| (a) | Annualized. |
Key Fund Statistics
Fund net assets | $ 3,378,520,049 |
Total number of portfolio holdings | 624 |
Portfolio turnover for the reporting period | 129% |
Graphical Representation of Fund Holdings
The tables below show the
investment
makeup
of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.Bond ratings on Fund holdings are divided into categories ranging from highest to lowest credit quality, determined by using the middle rating of Moody’s Ratings, S&P and Fitch, after dropping the highest and lowest available ratings. When ratings are available from only two rating agencies, the lower rating is used. When a rating is available from only one rating agency, that rating is used. If a security is not rated by Moody's Ratings, S&P or Fitch, but has a rating by Kroll and/or DBRS, the same methodology is applied to those bonds that would otherwise be not rated. When a bond is not rated by any rating agency, it is designated as “Not rated.” Credit quality ratings assigned by a
rating
agency are subjective opinions, not statements of fact, and are subject to change, including daily.Top Holdings
| Uniform Mortgage-Backed Security TBA 07/14/2055 5.000% | 5.2 % |
| Uniform Mortgage-Backed Security TBA 07/14/2055 5.500% | 3.7 % |
| U.S. Treasury 05/31/2030 4.000% | 3.7 % |
| U.S. Treasury 03/31/2029 4.125% | 2.1 % |
| Uniform Mortgage-Backed Security TBA 07/14/2055 3.500% | 1.5 % |
| U.S. Treasury 11/30/2030 4.375% | 1.3 % |
| Government National Mortgage Association TBA 07/21/2055 4.000% | 1.0 % |
| Federal National Mortgage Association 12/01/2052 6.000% | 1.0 % |
| Federal National Mortgage Association 09/01/2050 2.500% | 1.0 % |
| Federal National Mortgage Association 01/01/2052 3.000% | 0.9 % |
Asset Categories
Credit Quality
rating
agency are subjective opinions, not statements of fact, and are subject to change, including daily.
Top Holdings
| Uniform Mortgage-Backed Security TBA 07/14/2055 5.000% | 5.2 % |
| Uniform Mortgage-Backed Security TBA 07/14/2055 5.500% | 3.7 % |
| U.S. Treasury 05/31/2030 4.000% | 3.7 % |
| U.S. Treasury 03/31/2029 4.125% | 2.1 % |
| Uniform Mortgage-Backed Security TBA 07/14/2055 3.500% | 1.5 % |
| U.S. Treasury 11/30/2030 4.375% | 1.3 % |
| Government National Mortgage Association TBA 07/21/2055 4.000% | 1.0 % |
| Federal National Mortgage Association 12/01/2052 6.000% | 1.0 % |
| Federal National Mortgage Association 09/01/2050 2.500% | 1.0 % |
| Federal National Mortgage Association 01/01/2052 3.000% | 0.9 % |
| [1] | Annualized. |