Type: MonthYear
Can be used with standardized derivatives vs. the MaturityDate (54) field. Month and Year of the maturity (used for standardized futures and options).
Format:
YYYYMM (i.e. 199903)
YYYYMMDD (20030323)
YYYYMMwN (200303w) for week
A specific date or can be appended to the MaturityMonthYear. For instance, if multiple standard products exist that mature in the same Year and Month, but actually mature at a different time, a value can be appended, such as "w" or "w2" to indicate week as opposed to week 2 expiration. Likewise, the date (0-3) can be appended to indicate a specific expiration (maturity date).
Added in protocol FIX.4.1
See in: FIX.4.1, FIX.4.2, FIX.4.3, FIX.5.0, FIX.5.0SP1, FIX.5.0SP2, FIX.5.0SP2 EP240.