| Revenue | — | — | — |
| Management fees | 1,957.7a | 1,700.1a | 1,799.4a |
| Performance fees | 70.4a | 5.1a | -10.7a |
| Shareowner servicing fees | 240.7a | 213.3a | 224a |
| Other revenue | 204.4a | 183.3a | 190.9a |
| Total revenue | 2,473.2a | 2,101.8a | 2,203.6a |
| Operating expenses | — | — | — |
| Employee compensation and benefits | -716.1a | -593.3a | -611.5a |
| Long-term incentive plans | -166.6a | -167.4a | -180.7a |
| Distribution expenses | -520.9a | -455.9a | -498.3a |
| Investment administration | -58.2a | -47.4a | -49.4a |
| Marketing | -40.4a | -36.6a | -27.1a |
| General, administrative and occupancy | -300.8a | -294.6a | -279.3a |
| Impairment of intangible assets | | | -35.8a |
| Depreciation and amortization | -24.5a | -22.9a | -31.7a |
| Total operating expenses | -1,827.5a | -1,618.1a | -1,713.8a |
| Operating income | 645.7a | 483.7a | 489.8a |
| Interest expense | -18a | -12.7a | -12.6a |
| Investment gains (losses), net | 70.8a | 43.4a | -113.3a |
| Other non-operating income (expense), net | -86.6a | 12.6a | 11.5a |
| Income before taxes | 611.9a | 527a | 375.4a |
| Income tax provision | -166.3a | -100.3a | -100.9a |
| Net income | 445.6a | 426.7a | 274.5a |
| Net loss (income) attributable to noncontrolling interests | -36.7a | -34.7a | 97.9a |
| Net income attributable to JHG | 408.9a | 392a | 372.4a |