18 December 2008

Service Announcement

Customer Development Service (CDS)

Addition of New Market Structure

The purpose of this announcement is to inform you of the addition of the new ETFplus, MAC, MOT, OPA and SeDeX markets to CDS.

The changes will consist of the period rules, segments and sectors for these markets. These will be effective from 29 December 2008 onwards.

The structure will be added to TradElect as follows:

New Segments

Segment Code / Segment Name
ETF / ETF 1
ETC / ETC 1
ATF / ATF 1
UTF / UTF 1
MAC / MAC
DMO / DOMESTIC MOT
EMO / EURO MOT
UMO / UNREGULATED MOT
OP1 / TAKE OVER BIDS
SD / SEDEX 1
SDQ / SEDEX 2

New Sectors

Sector Code / Sector Name / Segment Code
ETFA / ETF LINKED FIXED INCOME / ETF
ETFB / ETF LINKED EQUITY/COMMODITIES / ETF
ETFC / ETF LINKED SHORT/STRUCT INDEX / ETF
ETFD / ETF LINKED LEVERAGE / ETF
ETFE / ETF STRUCTURED NOT LEVERAGED / ETF
ETFF / ETF STRUCTURED LEVERAGED / ETF
ETFG / NON-UCITS ETF / ETF
ETFH / ETF ON SECURITIES BASKET / ETF
ETFI / ACTIVE ETF / ETF
ETFL / ETF OF ETFS / ETF
ETFM / OTHER ETFS / ETF
ETCA / ETC LEVERAGED / ETC
ETCB / ETC NOT LEVERAGED / ETC
ATFA / ETF AUCTION / ATF
UTFA / UNREGULATED ETF / UTF
MAC1 / MAC DAILY AUCTION / MAC
IGC / ITALIAN GOVT BONDS CLEAN / DMO
IGD / ITALIAN GOVT BONDS DIRTY / DMO
ICC / ITALIAN CORP BONDS CLEAN / DMO
ICD / ITALIAN CORP BONDS DIRTY / DMO
EVC / EUROMOT VANILLA BONDS CLEAN / EMO
EVD / EUROMOT VANILLA BONDS DIRTY / EMO
ESC / EUROMOT STRUCTURED BONDS CLEAN / EMO
ESD / EUROMOT STRUCTURED BONDS DIRTY / EMO
UVC / UNREG VANILLA BONDS CLEAN / UMO
UVD / UNREG VANILLA BONDS DIRTY / UMO
USC / UNREG STRUCTURED BONDS CLEAN / UMO
USD / UNREG STRUCTURED BONDS DIRTY / UMO
TOA / TOB ACCOUNTING / OP1
TOR / TOB ROLLING / OP1
ICW / COVERED WARRANTS / SD
IEW / EXOTIC WARRANTS / SD
ILC / LEVERAGED CERTIFICATES / SD
IIC / INVESTMENT CERTIFICATES / SD
ILCQ / LEVERAGED PRODUCTS / SDQ
IICQ / INVESTMENT PRODUCTS / SDQ

New Periods

Period Name / Description
ACOP / BI DAY AUC OPA
CAND / BI POST CLOSE CP FROZEN
CNTD / BI CONTINUOUS NO AUC
CNTQ / BI CONTINUOUS NO AUC
EXOP / BI DAY UNX OPA
EXOR / BI DAY UNX OPA R
EXV / BI VWP UNX
FRCD / BI CLOS FRZ NO CP
OPND / BI MKT OPEN DEL ONLY
PXID / BI INT VO_AUC
PXOP / BI CLOS VO_AUC OPA
PXOR / BI DAY VO_AUC OPA R
PXV / BI VWP VO_AUC
PXWM / BI VWAP VO_AUC MOT
VLOP / BI DAY VALID OPA
VLOR / BI DAY VALID OPA R
VWPM / BI VWAP MOT

In preparation for the addition of Reference Data, the following values will also be available on TradElect from 29 December 2008:

Instrument Types

Instrument Type / Description
LC / LEVERAGE PRODUCTS BULL
LE / LEVERAGE PRODUCTS EXOTIC
LP / LEVERAGE PRODUCTS BEAR
TA / TRADABLE DURING AUCTION
TC / TRADABLE COMMODITIES
TR / TRADABLE IN REGULATED SEGMENT
FR / FLOATING RATE
FX / FIX RATE
OC / ONE COUPON
MC / MULTI COUPON
RV / REVERSE
SC / STEP COUPON

Ex-Marker Code

Ex-Marker Code / Description
EC / EX-COUPON

Price Format Code

Price Format Code / Description
M / ONE THOUSANDTH

Customers should be aware that messages associated with the new market structure additions will be broadcast overMDF/DDM Plus and Infolect from 29 December 2008 as part of reference data changes.

Additional Information

If you have any queries or require further information please contact your Technical Account Manager or the Technical Information Desk on 020 7797 3939 (STX 33939).

An archive of previously issued service announcements is available on the Exchange website at:

If you would like to amend or add further recipients of service announcements, please send the revised email contact details to:

Service Announcement (CDS) 133/08

London Stock Exchange plc Registered in EnglandWales No 2075721