SWIFT ISO 15022 - Code SPOS Meaning In Street Name Sub-balance: Balance of financial instruments that remain registered in the name of the prior beneficial owner. Usages Message type Field number Tag MT508 (Intra-Position Advice) 35 93A (Balance) MT524 (Intra-Position Instruction) 36 93A (Balance) MT538 (Statement of Intra-Position Advices) 35 93A (Balance: Balance From) MT538 (Statement of Intra-Position Advices) 44 93A (Balance: Balance To)