FIX Server supports the following forms of symbology for equities:
1. The combination of Symbol(55) + [Suffix(65)] + Currency(15) tags to specify equity symbol. For US equities, SIAC Symbol and Suffix notation is used. For non-US equities, exact values of Symbol(55) / Suffix(65) tags shall be agreed with Client side. Currency(15) identifies currency used for price.
For this form of symbology population of ExDestination(100) which contain exchange name symbol is optional and may be enabled by request.
2. To uniquely identify US and non-US equities, the following FIX tags shall be populated: IDSource(22), SecurityID(48), ExDestination(100), SecurityExchange(207) and Currency(15).
2.1. IDSource(22) = ‘4’(ISIN number is used for equity).
2.2 SecurityID(48) shall contain ISIN number of equity. See more details about ISIN number here:
http://en.wikipedia.org/wiki/International_Securities_Identifying_Number
2. 3. ExDestination(100) and SecurityExchange(207) shall contain exchange name symbol.
2.4. Currency(15) identifies currency used for price.
The desired form of symbology for each equity shall be agreed with Client and the option shall be used consistently for all its orders.