<InstrumentLeg> Component Block

The InstrumentLeg component block, like the Instrument component block, contains all the fields commonly used to describe a security or instrument. In the case of the InstrumentLeg component block it describes a security used in multileg-oriented messages.

Refer to the Instrument component block comments as this component block mirrors Instrument, except for the noted fields.

Several multileg-oriented messages specify an Instrument Leg component block. An instrument can have zero or more instrument legs. The fundamental business rule that applies to the multileg instrument is that the multileg instrument is defined as the combination of instrument legs. The multileg instrument must be able to be traded atomically that all instrument legs are traded or none are traded.

The LegRatioQty (623) is used to define the quantity of the leg that makes up a single unit of the multleg instrument. An option butterfly strategy is made up of three option legs.

Used in :

Tag		Field Name	FIXML	Req'd	Comments
600		LegSymbol	@Sym	Y
601		LegSymbolSfx	@Sfx	N
602		LegSecurityID	@ID	N
603		LegSecurityIDSource	@Src	N
604		NoLegSecurityAltID		N
=>	605	LegSecurityAltID	@SecAltID	C
=>	606	LegSecurityAltIDSource	@SecAltIDSrc	C
607		LegProduct	@Prod	N
608		LegCFICode	@CFI	N
609		LegSecurityType	@SecTyp	N
764		LegSecuritySubType	@SecSubTyp	N
610		LegMaturityMonthYear	@MMY	N
611		LegMaturityDate	@Mat	N
1212		LegMaturityTime	@MatTm	N
248		LegCouponPaymentDate	@CpnPmt	N
249		LegIssueDate	@Issued	N
250		LegRepoCollateralSecurityType	@RepoCollSecTyp	N	(Deprecated in FIX.4.4)
251		LegRepurchaseTerm	@RepoTrm	N	(Deprecated in FIX.4.4)
252		LegRepurchaseRate	@RepoRt	N	(Deprecated in FIX.4.4)
253		LegFactor	@Fctr	N
257		LegCreditRating	@CrdRtg	N
599		LegInstrRegistry	@Rgstry	N
596		LegCountryOfIssue	@Ctry	N
597		LegStateOrProvinceOfIssue	@StOrProvnc	N
598		LegLocaleOfIssue	@Lcl	N
254		LegRedemptionDate	@Redeem	N	(Deprecated in FIX.4.4)
612		LegStrikePrice	@Strk	N
942		LegStrikeCurrency	@StrkCcy	N
613		LegOptAttribute	@OptA	N
614		LegContractMultiplier	@Cmult	N
999		LegUnitOfMeasure	@UOM	N	Used to indicate the size of the underlying commodity on which the contract is based (e.g., 2500 lbs of lean cattle, 1000 barrels of crude oil, 1000 bushels of corn, etc.)
1224		LegUnitOfMeasureQty	@UOMQty	N
1421		LegPriceUnitOfMeasure	@PxUOM	N
1422		LegPriceUnitOfMeasureQty	@PxUOMQty	N
1001		LegTimeUnit	@TmUnit	N	Used to indicate a time unit for the contract (e.g., days, weeks, months, etc.)
1420		LegExerciseStyle	@ExerStyle	N
615		LegCouponRate	@CpnRt	N
616		LegSecurityExchange	@Exch	N
617		LegIssuer	@Issr	N
618		EncodedLegIssuerLen	@EncLegIssrLen	C
619		EncodedLegIssuer	@EncLegIssr	C
620		LegSecurityDesc	@Desc	N
621		EncodedLegSecurityDescLen	@EncLegSecDescLen	C
622		EncodedLegSecurityDesc	@EncLegSecDesc	C
623		LegRatioQty	@RatioQty	N	Specific to the <InstrumentLeg> (not in <Instrument>)
624		LegSide	@Side	N	Specific to the <InstrumentLeg> (not in <Instrument>)
556		LegCurrency	@Ccy	N	Specific to the <InstrumentLeg> (not in <Instrument>)
740		LegPool	@Pool	N	Identifies MBS / ABS pool
739		LegDatedDate	@Dated	N
955		LegContractSettlMonth	@CSetMo	N
956		LegInterestAccrualDate	@IntAcrl	N
1358		LegPutOrCall	@PutCall	N	Used to express option right
1017		LegOptionRatio	@LegOptionRatio	N
566		LegPrice	@Px	N

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