24 September 2008

RNS Number: 1058E
IG Group Holdings plc
24 September 2008

TR-1: Notifications of Major Interests in Shares

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: 

IG Group Holdings PLC

2. Reason for notification (yes/no)

An acquisition or disposal of voting rights Yes

An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached  No

An event changing the breakdown of voting rights No

Other (please specify):______________ N/A

3. Full name of person(s) subject to notification obligation: Janus Capital Management LLC

(“Janus”)

4. Full name of shareholder(s) (if different from 3): 

5. Date of transaction (and date on which the threshold is crossed or reached if different): 

19 September 2008

6. Date on which issuer notified: 

22 September 2008

7. Threshold(s) that is/are crossed or reached: 

8.0%

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

Ordinary Shares
ISIN: ISIN: GB00B06QFB75 

Situation previous to the triggering transaction 

Number of shares
31,566,527 

Number of voting rights
31,566,527 

Resulting situation after the triggering transaction

Number of shares
28,414,270 

Number of voting rights 
28,414,270
Direct 

Indirect

Percentage of voting rights  
8.62%
Direct 

Indirect 

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument 

Expiration date 

Exercise/ conversion period/date  

No. of voting rights that may be acquired (if the instrument exercised/converted) 

Percentage of voting rights

Total (A+B)

Number of voting rights 
28,414,270

Percentage of voting rights
8.62%

9. Chain of controlled undertakings through which the voting rights and /or the financial instruments are effectively held, if applicable:

Proxy Voting:

10. Name of proxy holder:

Janus Capital Management LLC

11. Number of voting rights proxy holder will cease to hold:

3,152,257

12. Date on which proxy holder will cease to hold voting rights:

19 September 2008

13. Additional information:

14 Contact name:

Guy Abbi, Company Secretary
IG Group holdings plc

15. Contact telephone name:

020 7896 0011

For notes on how to complete form TR-1 please see the FSA website.