Common comparison error
Upper barrier cannot be inferred from a rounded chart; precision, quote side, equality, frequency, and Barrier may change settlement.
The higher of two target levels used in a range or double-barrier contract.
Upper barrier cannot be inferred from a rounded chart; precision, quote side, equality, frequency, and Barrier may change settlement.
Read Upper barrier together with Lower barrier, Barrier, Barrier breach. The comparison must preserve the exact rule, value, state, and evidence described below.
With spot 100, Upper barrier uses lower 95 and upper 105. A path touching exactly 105 tests equality, quote side, monitoring frequency, and Lower barrier. Upper barrier is distinguished here by one decisive fact: the higher of two levels needs its own distance, equality, monitoring, and trigger status.
Use the source that governs the exact contract, account, entity, or platform state. A general definition cannot replace current broker terms.