FIX Protocol Tag 55: Symbol

Practical notes on Symbol

Symbol is the instrument's ticker as the counterparty knows it.

• Its meaning depends on the counterparty: the same company can be MSFT on one venue and MSFT.O on another.
• For an unambiguous identifier, send SecurityID (48) with SecurityIDSource (22), for example an ISIN, alongside or instead of Symbol, as the counterparty requires.
• From FIX 4.4 it sits inside the Instrument component.

Common mistakes

• A symbol in the wrong convention gets OrdRejReason 1 (Unknown symbol).

See also:Order rejected (103 reasons)

Tag 55 in each FIX version

Values and message usage as defined in a specific version.

• FIX 4.0
• FIX 4.1
• FIX 4.2
• FIX 4.3
• FIX 4.4
• FIX 5.0
• FIX 5.0 SP1
• FIX 5.0 SP2

Data type

STRING: Text of printable characters. It cannot contain the SOH delimiter.

Example

55=AAPL

Illustrative value. In a message, fields are separated by the SOH character (0x01), often shown as | or ^ in logs.

Message types that use tag 55

• IOI 35=6
• Advertisement 35=7
• Execution Report 35=8
• News 35=B
• Email 35=C
• New Order Single 35=D
• New Order List 35=E
• Order Cancel Request 35=F
• Order Cancel/Replace Request 35=G
• Order Status Request 35=H
• Allocation Instruction 35=J
• Allocation Ack 35=P
• Dont Know Trade 35=Q
• Quote Request 35=R
• Quote 35=S
• Market Data Request 35=V
• Market Data Snapshot Full Refresh 35=W
• Market Data Incremental Refresh 35=X
• Quote Cancel 35=Z
• Derivative Security List 35=AA
• New Order Multileg 35=AB
• Multileg Order Cancel/Replace 35=AC
• Trade Capture Report Request 35=AD
• Trade Capture Report 35=AE
• Order Mass Status Request 35=AF
• Quote Request Reject 35=AG
• RFQ Request 35=AH
• Quote Status Report 35=AI
• Quote Response 35=AJ
• Confirmation 35=AK
• Position Maintenance Request 35=AL
• Position Maintenance Report 35=AM
• Request For Positions 35=AN
• Request For Positions Ack 35=AO
• Position Report 35=AP
• Trade Capture Report Request Ack 35=AQ
• Trade Capture Report Ack 35=AR
• Allocation Report 35=AS
• Allocation Report Ack 35=AT
• Assignment Report 35=AW
• Collateral Request 35=AX
• Collateral Assignment 35=AY
• Collateral Response 35=AZ
• Collateral Report 35=BA
• Collateral Inquiry 35=BB
• Collateral Inquiry Ack 35=BG
• Security List Update Report 35=BK
• Adjusted Position Report 35=BL
• Allocation Instruction Alert 35=BM
• Execution Ack 35=BN
• Contrary Intention Report 35=BO
• Security Definition Update Report 35=BP
• Settlement Obligation Report 35=BQ
• Derivative Security List Update Report 35=BR
• Order Mass Action Report 35=BZ
• Order Mass Action Request 35=CA
• Stream Assignment Request 35=CC
• Stream Assignment Report 35=CD
• Margin Requirement Inquiry 35=CH
• Margin Requirement Inquiry Ack 35=CI
• Margin Requirement Report 35=CJ
• Security Mass Status 35=CO
• Trade Match Report 35=DC
• Party Risk Limit Check Request 35=DF
• Party Risk Limit Check Request Ack 35=DG
• Mass Order 35=DJ
• Mass Order Ack 35=DK
• Position Transfer Instruction 35=DL
• Position Transfer Report 35=DN
• Market Data Statistics Request 35=DO
• Market Data Statistics Report 35=DP
• Cross Request 35=DS
• Cross Request Ack 35=DT
• Trade Aggregation Request 35=DW
• Trade Aggregation Report 35=DX
• Pay Management Request 35=DY
• Pay Management Report 35=EA
• Quote Status Request 35=a
• Mass Quote Ack 35=b
• Security Definition Request 35=c
• Security Definition 35=d
• Security Status Request 35=e
• Security Status 35=f
• Trading Session Status 35=h
• Mass Quote 35=i
• List Strike Price 35=m
• Order Mass Cancel Request 35=q
• Order Mass Cancel Report 35=r
• New Order Cross 35=s
• Cross Order Cancel Replace Request 35=t
• Cross Order Cancel Request 35=u
• Security List Request 35=x
• Security List 35=y

Covers every version from FIX 4.0 to 5.0 SP2, including fields reached through components and repeating groups. The version pages above show whether the tag is required in each message.