London Stock Exchange - UK Market Sample Enumerations#

A subset of symbols from the London Stock Exchange, between January 2,2024 and March 31, 2024

The following fields have Enumerations:

  • AGGRESSOR_SIDE - Indicates whether a trade resulted from an incoming buy or sell order.

  • BOOK_TYPE - Type of order book or trading mechanism through which a trade was executed.

  • MKT_PHASE - Indicates the instrument’s current market phase, as specified by the trading venue

  • MMT_ALGO_IND - Identifies whether a trade involved an algorithmic order.

  • MMT_BENCHMARK_IND - Identifies whether a trade was priced according to a defined benchmark (e.g. VWAP) or reference price (e.g. midpoint of the primary market BBO), or whether it was part of a trade in multiple instruments (contingent trade or portfolio trade).

  • MMT_CROSS_IND - Identifies agency cross trades, where a broker crossed two client orders outside the order book.

  • MMT_DEFERRAL_TYPE - Type of publication deferral or subsequent enrichment applied to a trade report.

  • MMT_DIVIDEND_IND - Identifies whether a trade includes special dividend arrangements, e.g. a trade sold cum-dividend during an ex-dividend period.

  • MMT_DUP_IND - Identifies trades reported to more than one Approved Publication Arrangement.

  • MMT_MKT_MECH - Market mechanism through which a trade was executed.

  • MMT_MOD_IND - Identifies trade cancellations, or amendments of a previous trade.

  • MMT_NEGOTIATED_IND - Indicates privately negotiated trades, or Systematic Internaliser trades exempt from pre-trade transparency.

  • MMT_OFF_BOOK_AUTO_IND - Identifies whether an off-book trade report was executed via a manual or automated process.

  • MMT_PRICE_FORMING_IND - Identifies whether a trade is price-forming, or contributes to the price discovery process.

  • MMT_PUB_MODE - Identifies whether a trade was subject to delayed publication, and the reason for the deferral.

  • MMT_TRANS_CAT - Identifies various special categories of trade.

  • MMT_TRD_MODE - Trading period during which an on-book trade was executed, or origin of an off-book trade report (on-exchange / off-exchange / SI).

  • OFF_BOOK_STATUS - Indicates the availability of off-book trade reporting

  • ORDER_TYPE - Type of order.

  • QUOTE_BOOK_STATUS - Indicates the status of the instrument’s indicative quote book

  • TRADE_PERIOD - Market period during which a trade was executed.

  • TRADE_TYPE - Type of trade

  • UPDATE_TYPE - Type of update

AGGRESSOR_SIDE - Enumeration#

Enumeration ID

Enumeration Description

‘””’

Undefined (e.g. auction trades, off-book trades)

B

Buy

S

Sell
BOOK_TYPE - Enumeration#

Enumeration ID

Enumeration Description

0

Lit order book

1

Off-book

2

Dark book

6

Auction book

9

Off-exchange

R

Request for Quote
MKT_PHASE - Enumeration#

Enumeration ID

Enumeration Description

‘””’

Not applicable

1

Inactive

2

Suspended

a

Opening auction call

b

Post-close

c

Closed

d

Closing auction call

e

AESP auction call

f

Re-opening auction call

G

Intraday auction call

H

Halted

J

Halted (matching partition suspended)

K

Halted (trading system suspended)

l

Pause

P

Regulatory halt

q

EDSP auction call

r

Periodic auction call

T

Regular trading

u

Closing price crossing

v

Closing price publication

w

No active session

x

End of post-close
MMT_ALGO_IND - Enumeration#

Enumeration ID

Enumeration Description

-

Not an algorithmic trade

H

Algorithmic trade
MMT_BENCHMARK_IND - Enumeration#

Enumeration ID

Enumeration Description

-

Not applicable

1

Benchmark trade executed at the closing price

2

Portfolio trade + benchmark trade executed at the closing price

3

Contingent trade + benchmark trade executed at the closing price

4

Contingent trade + portfolio trade + benchmark trade executed at the closing price

6

Reference price trade executed at the closing price

B

Benchmark trade

C

Contingent trade

M

Benchmark trade + contingent trade

N

Contingent trade + portfolio trade

O

Benchmark trade + contingent trade + portfolio trade

P

Portfolio trade

S

Reference price trade

Y

Benchmark trade + portfolio trade
MMT_CROSS_IND - Enumeration#

Enumeration ID

Enumeration Description

-

Not a cross trade

M

Matched principal trade

X

Agency cross trade
MMT_DEFERRAL_TYPE - Enumeration#

Enumeration ID

Enumeration Description

-

No deferral / unspecified

1

Limited details

2

Daily aggregated trade

3

Volume omission trade

4

4 weeks aggregated trade

5

Indefinite aggregated trade

6

Volume omission trade eligible for enrichment in aggregated form

7

Full details of earlier Limited Details trade

8

Full details of earlier Daily Aggregated trade

9

Full details of earlier Volume Omission trade

J

Volume omission trade for sovereign bonds

K

4 weeks aggregated trade for sovereign bonds

L

Full details of earlier Volume Omission sovereign bond trade

M

Full details of earlier Aggregated sovereign bond trade

V

Full details of 4 Weeks Aggregated trade

W

Full details of Volume Omission trade eligible for enrichment in aggregated form
MMT_DIVIDEND_IND - Enumeration#

Enumeration ID

Enumeration Description

-

Not applicable

E

Ex-/cum-dividend
MMT_DUP_IND - Enumeration#

Enumeration ID

Enumeration Description

-

Unique trade report

1

Duplicative trade reported to more than one APA

2

Intra-group trade

3

Duplicative intra-group trade report

4

Cross-border duplicative trade report

5

Duplicative report within jurisdiction + cross-border duplicative trade report

6

Intra-group trade + duplicative within jurisdiction + cross-border duplicative trade report

7

Intra-group trade + cross-border duplicative trade report
MMT_MKT_MECH - Enumeration#

Enumeration ID

Enumeration Description

1

Central Limit Order Book

2

Quote-Driven Market

3

Dark Book

4

Off Book

5

Periodic Auction

6

Request for Quote

7

Hybrid / Other

8

Hybrid

9

Other
MMT_MOD_IND - Enumeration#

Enumeration ID

Enumeration Description

-

New trade

A

Amended trade

C

Trade cancellation
MMT_NEGOTIATED_IND - Enumeration#

Enumeration ID

Enumeration Description

-

Not applicable

1

Negotiated trade in liquid instruments

2

Negotiated trade in illiquid instruments

3

Negotiated trade subject to conditions other than the market price

4

Pre-trade transparency waiver for illiquid instrument on an SI

5

Pre-trade transparency waiver for trade larger than Standard Market Size on an SI

6

Pre-trade transparency waivers for trade larger than Standard Market Size on an SI and illiquid instrument on an SI

7

Large in Scale OTC trade brought onto a venue

8

Negotiated trade with pre-trade transparency waiver

9

Large in Scale OTC trade in liquid instruments brought onto a venue

a

Large in Scale OTC trade in illiquid instruments brought onto a venue

b

Large in Scale OTC trade subject to conditions other than the current market price and brought onto a venue

c

Large in Scale OTC trade with pre-trade transparency waiver brought onto a venue

N

Negotiated trade
MMT_OFF_BOOK_AUTO_IND - Enumeration#

Enumeration ID

Enumeration Description

M

Off-book manual

Q

Off-book automated

-

Not applicable
MMT_PRICE_FORMING_IND - Enumeration#

Enumeration ID

Enumeration Description

J

Trade not contributing to the price discovery process

N

Price not available but pending

P

Plain vanilla (price-forming) trade

T

Non-price forming (technical) trade

Z

Price is not applicable
MMT_PUB_MODE - Enumeration#

Enumeration ID

Enumeration Description

-

Immediate publication

1

Delayed publication / late reported

2

Deferred publication (Large in Scale)

3

Deferred publication (illiquid instrument)

4

Deferred publication (size specific to instrument)

5

Deferred publication (illiquid instrument and size specific to instrument)

6

Deferred publication (illiquid instrument and Large in Scale)

A

Deferred publication (medium size liquid market)

B

Deferred publication (medium size illiquid market)

C

Deferred publication (large size liquid market)

D

Deferred publication (large size illiquid market)

E

Deferred publication (very large size liquid market)

F

Deferred publication (very large size illiquid market)

G

Deferral for ETCs / ETNs / SFPs / emission allowances
MMT_TRANS_CAT - Enumeration#

Enumeration ID

Enumeration Description

-

Not applicable

D

Dark trade

G

RFMD give-up trade

R

Trade receiving price improvement

Y

Exchange for physical

Z

Package trade
MMT_TRD_MODE - Enumeration#

Enumeration ID

Enumeration Description

1

Auction

2

Continuous trading

3

At Market Close trading

5

Trade reporting (on-exchange)

6

Trade reporting (off-exchange)

7

Trade reporting (Systematic Internaliser)

I

Intraday auction

K

Closing auction

O

Opening auction

U

Unscheduled auction
OFF_BOOK_STATUS - Enumeration#

Enumeration ID

Enumeration Description

‘””’

Not applicable

c

Closed

t

End of trade reporting

T

Regular trading
ORDER_TYPE - Enumeration#

Enumeration ID

Enumeration Description

E

Executable quote

L

Limit order

M

Market order

Q

Firm quote [until 20191217]
QUOTE_BOOK_STATUS - Enumeration#

Enumeration ID

Enumeration Description

‘””’

Not applicable

1

Inactive

2

Suspended

c

Closed

H

Halted

m

Pre-mandatory quote period

n

Mandatory quote period

o

Post-mandatory quote period

P

Regulatory halt

w

No active session
TRADE_PERIOD - Enumeration#

Enumeration ID

Enumeration Description

A

Auction

C

Closing Auction

I

Intraday Auction

O

Opening Auction

T

Trading at last price

U

Unscheduled Auction

p

Auction initiated by market participant

-

Regular trading
TRADE_TYPE - Enumeration#

Enumeration ID

Enumeration Description

AT

Automatic trade

OB

Off-book trade / external trade report

RFQ

RFQ trade

UT

Uncrossing trade
UPDATE_TYPE - Enumeration#

Enumeration ID

Enumeration Description

A

Add

D

Delete

M

Modify