o  Preliminary proxy statement

o  Confidential, For Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

o  Definitive Proxy Statement

x Definitive Additional Materials

o  Soliciting Material Pursuant to § 240.14a-12

x

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$ in millions

ASSETS

Current assets:

Cash and cash equivalents

$585.2

$915.8

Cash and cash equivalents of consolidated investment products

73.0

36.6

Unsettled fund receivables

303.7

605.5

Accounts receivable

239.3

373.0

Investments

123.6

151.4

Prepaid assets

55.6

65.9

Other current assets

72.2

89.9

Deferred tax asset, net

86.1

32.5

Assets held for policyholders

Total current assets

2,378.9

4,168.6

Non-current assets:

Investments

121.3

114.1

Investments of consolidated investment products

843.8

1,239.6

Prepaid assets

36.3

55.6

Deferred sales commissions

24.5

31.3

Deferred tax asset, net

37.2

133.8

Property and equipment, net

205.3

180.0

Intangible assets, net

142.8

154.2

Goodwill

Total non-current assets

Total assets

LIABILITIES, MINORITY INTERESTS AND SHAREHOLDERS’ EQUITY

Current liabilities:

Current maturities of long-term debt

$297.2

$—

Unsettled fund payables

288.3

581.2

Income taxes payable

37.9

140.6

Other current liabilities

639.8

1,021.1

Policyholder payables

Total current liabilities

2,103.4

3,640.9

Non-current liabilities:

Long-term debt

862.0

1,276.4

Borrowings of consolidated investment products

—

116.6

Other non-current liabilities

Total non-current liabilities

Total liabilities

Minority interests in equity of consolidated entities

906.7

1,121.2

Shareholders’ equity:

Common shares ($0.20 par value; 1,050.0 million authorized; 426.6 million and 424.7 million shares issued as of December 31, 2008, and 2007, respectively)

85.3

84.9

Additional paid-in-capital

5,352.6

5,306.3

Treasury shares

(1,128.9)

(954.4)

Retained earnings

1,476.3

1,201.7

Accumulated other comprehensive (loss)/income, net of tax

Total shareholders’ equity

Total liabilities, minority interests and shareholders’ equity

$ in millions, except per share data

Operating revenues:

Investment management fees

$2,617.8

$3,080.1

$2,508.2

Performance fees

75.1

70.3

82.1

Service and distribution fees

512.5

593.1

534.9

Other

Total operating revenues

Operating expenses:

Employee compensation

1,055.8

1,137.6

1,070.5

Third-party distribution, service and advisory

875.5

1,051.1

826.8

Marketing

148.2

157.6

138.8

Property, office and technology

214.3

242.5

230.7

General and administrative

266.0

295.8

207.6

Restructuring charge

Total operating expenses

Operating income

Other income/(expense):

Equity in earnings of unconsolidated affiliates

46.8

48.1

4.3

Interest income

37.2

48.5

26.9

Gains and losses of consolidated investment products, net

(58.0)

214.3

294.3

Interest expense

(76.9)

(71.3)

(77.2)

Other gains and losses, net

Income before income taxes and minority interest

657.0

1,243.8

1,034.3

Income tax provision

Income before minority interest

421.0

886.5

779.7

Minority interest in (income)/losses of consolidated entities, net of tax

Net income

Earnings per share:

— basic

$1.25

$1.69

$1.22

— diluted

$1.21

$1.64

$1.19

Dividends declared per share

$0.520

$0.372

$0.357

$ in millions

Operating activities:

Net income

$481.7

$673.6

$482.7

Adjustments to reconcile net income to net cash provided by operating activities:

Amortization and depreciation

47.6

64.1

67.5

Share-based compensation expense

97.7

105.2

140.6

Loss/(gain) on disposal of property, equipment, software, net

(2.0)

(1.1)

4.0

Purchase of trading investments

(22.0)

(24.2)

(51.9)

Sale of trading investments

22.3

24.6

1.5

Other gains and losses, net

39.9

(9.9)

(26.8)

Loss/(gain) of consolidated investment products, net

58.0

(214.3)

(294.3)

Tax benefit from share-based compensation

54.9

38.2

17.9

Excess tax benefits from share-based compensation

(16.8)

(23.1)

(12.3)

Minority interest in earnings of consolidated entities, net of tax

(60.7)

212.9

297.0

Equity in earnings of unconsolidated affiliates

(46.8)

(48.1)

(4.3)

Changes in operating assets and liabilities:

Change in cash held at consolidated investment products

(37.1)

(4.8)

1.3

Decrease/(increase)in receivables

1,138.8

(59.6)

(160.7)

(Decrease)/increase in payables

Net cash provided by operating activities

Investing activities:

Purchase of property and equipment

(84.1)

(36.7)

(37.9)

Disposal of property and equipment

0.2

12.1

2.5

Dividends from unconsolidated affiliates

29.8

1.8

0.9

Purchase of available-for-sale investments

(109.4)

(80.3)

(289.4)

Proceeds from sale of available-for-sale investments

84.5

111.8

254.3

Purchase of investments by consolidated investment products

(112.3)

(331.5)

(372.3)

Proceeds from sale of investments by consolidated investment products

188.7

143.6

122.6

Returns of capital in investments of consolidated investment products

99.2

196.0

257.5

Purchase of other investments

(27.1)

(25.9)

(14.5)

Proceeds from sale of other investments

36.2

17.1

15.6

Acquisitions of businesses, net of cash acquired of $8.9 million in 2006

—

—

(198.8)

Acquisition earn-out payments

(174.3)

(56.0)

(1.3)

Disposal of businesses

Net cash used in investing activities

Financing activities:

Proceeds from exercises of share options

79.8

137.4

66.8

Purchases of treasury shares

(313.4)

(716.0)

(155.9)

Dividends paid

(207.1)

(155.0)

(143.6)

Excess tax benefits from share-based compensation

16.8

23.1

12.3

Capital invested into consolidated investment products

96.1

211.0

345.3

Capital distributed by consolidated investment products

(241.0)

(318.2)

(301.2)

Borrowings of consolidated investment products

28.9

112.6

46.3

Repayments of consolidated investment products

(9.3)

(33.1)

(82.1)

Net (repayments)/borrowings under credit facility

(114.4)

(2.6)

59.0

Issuance of senior notes

—

300.0

—

Repayments of senior notes

Net cash used in financing activities

(Decrease)/increase in cash and cash equivalents

(239.3)

126.5

34.1

Foreign exchange movement on cash and cash equivalents

(91.3)

10.4

35.3

Cash and cash equivalents, beginning of year

Cash and cash equivalents, end of year

Supplemental Cash Flow Information:

Interest paid

$(71.2)

$(72.0)

$(73.4)

Interest received

$36.9

$48.2

$26.9

Taxes paid

$(238.4)

$(328.2)

$(213.1)

$ in millions

Common

Shares

January 1, 2006

$—

$81.8

$431.8

$4,710.0

$(407.1)

$361.6

$351.7

$5,529.8

Net income

—

—

—

—

—

482.7

—

482.7

Other comprehensive income

Currency translation differences on investments in overseas subsidiaries

—

—

—

—

—

—

268.3

268.3

Change in minimum pension liability

—

—

—

—

—

—

25.3

25.3

Change in net unrealized gains on available-for-sale investments

—

—

—

—

—

—

(6.6)

(6.6)

Tax impacts of changes in accumulated OCI balances

—

—

—

—

—

—

(0.7)

Total comprehensive income

Initial impact of adopting FASB 158, net of tax

—

—

—

—

—

—

(23.5)

(23.5)

Dividends

—

—

—

—

—

(143.6)

—

(143.6)

Employee share plans:

Share-based compensation

—

—

—

140.6

—

—

—

140.6

Vested shares

—

—

—

(17.4)

17.4

—

—

—

Exercise of options

—

1.1

—

65.7

—

—

—

66.8

Tax impact of share-based payment

—

—

—

12.3

—

—

—

12.3

Purchase of shares

—

—

—

—

(188.2)

—

—

(188.2)

Business combinations

—

—

—

0.8

—

—

—

0.8

Conversion of exchangeable shares into ordinary shares

December 31, 2006

Net income

—

—

—

—

—

673.6

—

673.6

Other comprehensive income

Currency translation differences on investments in overseas subsidiaries

—

—

—

—

—

—

351.1

351.1

Change in accumulated OCI related to employee benefit plans

—

—

—

—

—

—

7.7

7.7

Change in net unrealized gains on available-for-sale investments

—

—

—

—

—

—

(16.8)

(16.8)

Tax impacts of changes in accumulated OCI balances

—

—

—

—

—

—

(4.4)

Total comprehensive income

—

—

—

—

—

—

—

Adoption of FIN 48

—

—

—

—

—

(17.6)

—

(17.6)

Dividends

—

—

—

—

—

(155.0)

—

(155.0)

Employee share plans:

Share-based compensation

—

—

—

105.2

—

—

—

105.2

Vested shares

—

—

—

(53.9)

53.9

—

—

—

Exercise of options

—

1.6

—

135.8

—

—

—

137.4

Tax impact of share-based payment

—

—

—

23.1

—

—

—

23.1

Purchase of shares

—

—

—

—

(683.7)

—

—

(683.7)

Cancellation of treasury shares

—

(1.9)

—

(251.4)

253.3

—

—

—

Business combinations

—

—

—

6.0

—

—

6.0

Conversion of exchangeable shares into ordinary shares

—

2.0

(377.4)

375.4

—

—

—

—

Cancellation of ordinary shares and issuance of common shares

December 31, 2007

Net income

—

—

—

—

—

481.7

—

481.7

Other comprehensive income

Currency translation differences on investments in overseas subsidiaries

—

—

—

—

—

—

(1,034.2)

(1,034.2)

Change in accumulated OCI related to employee benefit plans

—

—

—

—

—

—

(0.3)

(0.3)

Change in net unrealized gains on available-for-sale investments

—

—

—

—

—

—

(9.3)

(9.3)

Tax impacts of changes in accumulated OCI balances

—

—

—

—

—

—

(4.1)

Total comprehensive income

—

—

—

—

—

—

—

Dividends

—

—

—

—

—

(207.1)

—

(207.1)

Employee share plans:

Share-based compensation

—

—

—

97.7

—

—

—

97.7

Vested shares

—

—

—

(55.7)

55.7

—

—

—

Exercise of options

0.4

—

—

(12.5)

87.8

—

—

75.7

Tax impact of share-based payment

—

—

—

16.8

—

—

—

16.8

Purchase of shares

December 31, 2008