Company: AHL
Filing Date: 2025-05-08
Form Type: 424B4
Source: 0001628280-25-023859
Chunk: 255

Company: ASPEN INSURANCE HOLDINGS LTD
Filing Date: 2025-05-08
Form: 424B4
Chunk 255
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 |                                 585.8 |     |          |  32.4 | % |
| Aon Corporation                  |     |                                        |                                 472.7 |     |       |  25.1 |   |     |                  |                                 395.3 |     |          |  26.0 |   |     |          |                                 548.2 |     |          |  30.3 |   |
| Arthur J. Gallagher              |     |                                        |                                 307.6 |     |       |  16.3 |   |     |                  |                                 213.0 |     |          |  14.0 |   |     |          |                                 111.8 |     |          |   6.2 |   |
| Others                           |     |                                        |                                 494.8 |     |       |  26.2 |   |     |                  |                                 451.4 |     |          |  29.7 |   |     |          |                                 561.2 |     |          |  31.1 |   |
| Total                            |     | $                                      |                               1,885.8 |     |       | 100.0 | % |     | $                |                               1,521.0 |     |          | 100.0 | % |     | $        |                               1,807.0 |     |          | 100.0 | % |

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(1) The prior periods are re-presented to ensure consistency and replicate the current year breakdown for the addition of new material brokers and/or agents.

### Investment Operations
Our investment strategy is focused on delivering stable investment income and total return through all market cycles while maintaining appropriate portfolio liquidity and credit quality to meet the requirements of our customers, rating agencies and regulators. To enhance investment returns where possible, we tactically adjust the duration of the investment portfolio and asset allocation taking into account the average liability duration of our reinsurance and insurance risks and our views of interest rates, the yield curve, credit spreads and markets for different assets.

As at December 31, 2024, we maintained an Asset and Liability Management Committee, which reports into the Group Executive Committee. The Group Chief Investment Officer is a voting member of the Asset and Liability Management Committee and provides updates as appropriate to the Group Investment Committee of the Board at its regular meetings, which in turn reports up to the Board. The primary purpose of the Asset