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Market
window in Senaf Terminal |

Reference:
Four digits code. In the case of the issues that can be
traded with two futures for their residual life a different code
will be created for each one of them.
Contracts:
It is the number of future contracts equivalent to 1 million €
traded in the Basis. The number of contracts of the future trade
will be obtained by multiplying this data by the million of €
crossed in the cash market issue. The obtained result will be rounded
to the nearest integer. (Value date of calculation 8/04/2004).
Basis: We shall show the Spanish issue versus the
German future contract.
Volume:
Quotation will be done according to the amount gross wished to be
obtained in the Spanish issue. When a trade is done the system will
calculate according to sensitivity the equivalent number of contracts
for the German future.
Gross Basis: Quotation will be done in basis points
(three digits for the big figure and 2 decimal places) between the
ex-coupon price of the Spanish securities issue and the price of
the German future multiplied by the conversion factor of the corresponding
Spanish issue.
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New
positions and New Bid and Ask windows in Senaf Terminal |


- The
New Bid order aims to buy the Spanish Bond or Obligation and sell
the German future contract, while the New Ask order aims to sell
the Spanish Bond or Obligation and buy the German future contract.
- When
the code number is entered the issue and the future to be bought
and sold will be automatically filled in.
- When
the broker enters the Client Code, the name of the client will
be shown to the right.
- Field
“Client” will appear by default in the Clients terminals.
- Gross
Basis will be the difference between the securities ex-coupon
price (corrected by the Spanish Bond conversion factor), so that
in most of the cases it will be positive. Quotation will be done
with three digits for the big figure and two decimal places.
- The
volume to be entered will be that of the Bond or Obligation. The
system will calculate by sensitivity the number of contracts for
the future trade.
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Cross
of a Basis transaction |
The
crossing of a basis will generate a trade on the Spanish security
and a trade on the German future.
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Future
trade price |
hen
a basis trade is crossed, the last price crossed on the German future
in Eurex will be the one applied to the future leg. This price will
be obtained through the interface system with Eurex.
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Bond
or Obligation trade price |
his
price will be obtained starting from the price of the future trade,
the gross basis to which the basis has been crossed and the conversion
factor of the Spanish security.
Issue
Spot price = (Future price x Spot Issue conversion factor ) + gross
basis
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Conversion
Factors Calculating |

SENAF
will provide the conversion factor of the Spanish security relating
to the German future contract. This will be the actual value of
the Spanish security at the future contract maturity date, of its
flows (coupons + amortization) discounted to the theoretical coupon
rate of the corresponding future German Notional Bond, less the
accrued coupon of the Spanish security at that date, divided by
100.
We shall use the Bank of Spain formula to calculate the actual value
of the Spanish security.
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Trade
volumes |
The trade volume will be that of the Spanish security.
In
order to calculate the corresponding number of contracts it will
be taken into account the Spanish security sensitivity, the Cheapest
to Deliver (CTD) sensitivity of the German issue for each future
contract and the CTD conversion factor.
Minimum
number of contracts = NOC x SEC x FCC / NCF x SC
NOC:
Spanish Security Nominal.
SEC: Spanish Security Sensitivity.
FCC: German CTD Conversion Factor.
NCF: German Future Contract Nominal.
SC: German CTD Sensitivity.
This
calculation will be made with the previous day closing data and
its result will be a fixed data for the whole session.
The number of future contracts will be obtained multiplying this
number by the millions of € crossed in the Spanish security.
This result will be rounded to nearest integer.
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German
Future trade confirmation |
SENAF will confirm the future trade data to EUREX using EUREX Basis
Trading Electronic Facility.
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Spanish
security trade confirmation |
This
trade will be confirmed to SENAF members as the rest of the trades
crossed in SENAF market.
For control purposes this trades will be marked.
In this confirmation SENAF will include information related to the
German future trade mentioning the future code, its price and number
of contracts .
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Crossed
trades windows |
Basis market crossed trades will be shown in the Senaf Terminal
in a different window form cash market crossed trades,
although we shall keep a unique numerical order for trades done
in both markets.
Each
trade shown in Basis trades window will include information about
the German future trade.
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Incidents |
Eurex
and Senaf will be in constant communication in order to take trading
as easy as possible and to solve any incidences.
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