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Financial Services

 

Order Type

(A)  Explanatory Notes for Order Types

 

1.1 Enhanced limit order (ELO)

 

ELO is similar to the limit order except that it will allow matching of up to ten price queues at a time.  The ask order price of ELO can be inputted at nine spreads lower than the current bid or the bid order price can be inputted at nine spreads higher than current ask price.  Any unfilled quantity of ELO after matching will be stored in the System as a normal limit order at the input order price.  The number of price queues allowed for matching can be increased in future if necessary.

 

 Example 1: Enhanced Limit Order (ELO) - fully matched

 

 Table 1 (a): Original Position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Enhanced Limit Order: to buy 650,000@ $30.50

 

Table 1 (b): After Execution

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Trade executed

80,000 @ 30.05

70,000 @ 30.10

160,000 @ 30.15

50,000 @ 30.20

60,000 @ 30.25

50,000 @ 30.30

40,000 @ 30.35

45,000 @ 30.40

25,000 @ 30.45

70,000 @ 30.50

Unfilled

None

 

 Example 2: Enhanced Limit Order (ELO) - with unfilled quantity

 

 Table 2 (a): Original Position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Enhanced Limit Order: to buy 680,000 @ $30.50

 

Table 2 (b): After Execution

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Trade executed

80,000@ 30.05

70,000@ 30.10

160,000@ 30.15

50,000@ 30.20

60,000@ 30.25

50,000@ 30.30

40,000@ 30.35

45,000@ 30.40

25,000@ 30.45

70,000@ 30.50

Unfilled

30,000 @ $30.50 as limit order

 

 

 

1.2 Special Limit Order (SLO)

 

A limit price has to be input for SLO but there is no restriction on the limit price with respect to the best price on the other side of the market.  SLO will match up to ten price queues (i.e. the best price queue and up to the tenth queue at 9 spreads away) as long as the traded price is not worse than the input limit price.  Any unfilled quantity of SLO after matching will be cancelled and not stored in the System.  The number of price queues allowed for matching can also be increased in future if necessary.

 

 Example 3: Special Limit Order (SLO)

 

 Table 3 (a): Original Position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Special Limit Order: to buy 660,000 @ $30.55

 

Table 3 (b): After Execution

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Trade executed

80,000@ 30.05

70,000@ 30.10

160,000@ 30.15

50,000@ 30.20

60,000@ 30.25

50,000@ 30.30

40,000@ 30.35

45,000@ 30.40

25,000@ 30.45

70,000@ 30.50

Unfilled quantity

10,000 cancelled, not stored in the System.

 

 

 

(B)  Comparison of Limit Order, Enhanced Limit Order and Special Limit Order

 

The following example illustrates the effect on the central order book if a sell order of 600K shares of XYZ stock is input at different selling prices and with different order types:

 

Bid

Bid

Bid

Bid

Bid

Bid

Price

Volume ('000)

Price

Volume ('000)

Price

Volume ('000)

Price

Volume ('000)

Price

Volume ('000)

Price

Volume ('000)

Price

Volume ('000)

Price

Volume ('000)

Price

Volume ('000)

Price

Volume ('000)

Price

Volume ('000)

Price

Volume ('000)

Ask

Ask

Ask

Ask

Ask

Ask

$29.70

100

$30.55

80

$29.65

150

$29.45

150

$30.60

55

$29.60

18

$29.40

50

$30.65

50

$29.80

180

$29.80

180

$29.80

180

$30.30

60

$29.80

180

$29.80

180

$30.25

60

$30.75

20

$30.25

60

$30.75

20

$30.25

60

$30.75

20

$29.55

36

$29.55

36

$29.55

36

$30.05

25

$29.55

36

$29.55

36

$31.00

15

$31.00

15

$31.00

15

$29.35

20

$29.35

20

$29.35

20

$29.85

70

$29.35

20

$29.35

20

$30.70

25

$31.20

35

$30.70

25

$31.20

35

$30.70

25

$31.20

35

$30.00

$30.00

$30.00

$30.50

$30.00

$30.00

$30.05

$30.55

$30.05

$30.55

$30.05

$30.55

100

100

100

30

100

100

80

80

80

80

80

80

$29.75

$29.75

$29.75

$30.25

$29.75

$29.75

$30.80

$30.80

$30.80

34

34

34

20

34

34

70

70

70

$29.85

$29.85

$29.85

$30.35

$29.85

$29.85

$30.20

$30.70

$30.20

$30.70

$30.20

$30.70

60

60

60

40

60

60

50

25

50

25

50

25

$29.60

$29.60

$30.10

$29.60

$29.60

$30.95

$30.95

$30.95

18

18

30

18

18

70

70

70

$29.40

$29.40

$29.90

$29.40

$29.40

$31.15

$30.65

$31.15

$30.65

$31.15

50

50

10

50

50

30

50

30

50

30

$29.95

$29.95

$29.95

$30.45

$29.95

$29.95

$30.10

$30.60

$30.10

$30.60

$30.10

$30.60

90

90

90

200

90

90

70

55

70

55

70

55

$29.70

$29.70

$30.20

$29.70

$29.70

$30.85

$30.85

$30.85

100

100

15

100

100

20

20

20

$29.50

$29.50

$29.50

$30.00

$29.50

$29.50

$31.05

$30.55

$31.05

$30.55

$31.05

200

200

200

28

200

200

25

80

25

80

25

$29.90

$29.90

$29.90

$30.40

$29.90

$29.90

$30.15

$30.65

$30.15

$30.65

$30.15

$30.65

80

80

80

50

80

80

160

50

160

50

160

50

$29.65

$29.65

$30.15

$29.65

$29.65

$30.90

$30.90

$30.90

150

150

10

150

150

10

10

10

$29.45

$29.45

$29.95

$29.45

$29.45

$31.10

$30.60

$31.10

$30.60

$31.10

150

150

20

150

150

60

55

60

55

60

$30.35

40

$30.40

45

$30.45

25

$30.50

70

$30.30

50

$30.50

70

$30.30

50

$30.45

25

$30.35

40

$30.40

45

$30.50

70

$30.30

50

$30.45

25

$30.35

40

$30.40

45

* The 9-times restriction, as stipulated in Rule 505A of the Rules of the Exchange

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