Notification of Major Interest in Shares

RNS Number : 8347I

IG Group Holdings plc

21 June 2011

IG Group Holdings plc 21 June 2011
TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESⁱ

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: ⁱⁱ		IG Group Holdings plc
2 Reason for the notification (please tick the appropriate box or boxes):
An acquisition or disposal of voting rights			Yes
An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached
An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments
An event changing the breakdown of voting rights
Other (please specify):
3. Full name of person(s) subject to the notification obligation: ⁱⁱⁱ	Massachusetts Financial Services Company
4. Full name of shareholder(s) (if different from 3.):^iv	MFS invests in securities of the issuer on behalf of its various mutual funds and institutional account clients.
5. Date of the transaction and date on which the threshold is crossed or reached: ^v	15 June 2011
6. Date on which issuer notified:	20 June 2011
7. Threshold(s) that is/are crossed or reached: ^{vi, vii}	5%

8. Notified details:

A: Voting rights attached to shares ^{viii, ix}

Class/type of
shares

if possible using
the ISIN CODE

Situation previous
to the triggering
transaction

Resulting situation after the triggering transaction

Number
of
Shares

Number
of
Voting
Rights

Number
of shares

Number of voting
rights

% of voting rights ^x

Direct

Direct ^xi

Indirect ^xii

Direct

Indirect

GB00B06QFB75

17,841,957

18,150,880

5.01%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial
instrument

Expiration
date ^xiii

Exercise/
Conversion Period ^xiv

Number of voting
rights that may be
acquired if the
instrument is
exercised/ converted.

% of voting
rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments ^{xv, xvi}

Resulting situation after the triggering transaction

Type of financial
instrument

Exercise price

Expiration date ^xvii

Exercise/
Conversion period ^xviii

Number of voting rights instrument refers to

% of voting rights ^{xix, xx}

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

18,150,880

5.01%

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

IG Group Holdings plc - B06QFB7
Holdings as of 15 June 2011

Entity	Holding	Percentage Held
MFS Investment Management (MFS) MFS Institutional Advisors, Inc. (MFSI) MFS International Ltd. (MIL)	1,817,931 16,188 2,048,145	0.5019% 0.0045% 0.5654%
MFS International (U.K.) Limited (MIL U.K.)	14,268,616	3.9391%

Notifiable Interest	18,150,880	5.0108%

Shares Outstanding	362,233,554