Field SpreadToBenchmark (218) - FIX Protocol FIX.4.3
For Fixed Income. Basis points relative to a benchmark. To be expressed as "count of basis points" (vs. an absolute value). E.g. High Grade Corporate Bonds may express price as basis points relative to benchmark (the Benchmark (219) field). Note: Basis points can be negative.
Added in protocol FIX.4.2