The information provided defines SLD as "last sale" in the context of financial markets, specifically stock trading. However, this definition does not relate to the banking sector. Thus, the question of what SLD stands for in banking cannot be answered with the provided information. It is possible that SLD has different meanings depending on the banking context.
The provided reference states:
SLD last sale. Shortened version of "sold last sale," which shows up on the consolidated tape when a large change (one point for lower priced securities and two points for higher-priced securities) occurs between transactions.
This describes SLD as it relates to stock market transactions, signaling a significant price change between trades. It doesn't provide information regarding banking terminology.
