This course covers Eligible Securities Definition, which involves establishing criteria for determining which listed securities are acceptable as collateral within the Loan Against Shares (LAS) Credit workflow to ensure appropriate exposure management and collateral quality. It evaluates key dimensions such as volatility, regulatory constraints, value, and the management of credit against listed securities, with each requiring independent validation and documented rationale before any credit action is finalized. It is distinct from portfolio diversification strategy, as it focuses specifically on structured identification, assessment, and breach response related to collateral eligibility and exposure quality, while portfolio diversification addresses broader strategic allocation and investment-balancing considerations with separate evidence standards, ownership, and approval authority. Within LAS Collateral Eligibility & Valuation, the credit manager validates team-level analysis, approves case recommendations, and manages segment-level exposure, shaping escalation scope and credit committee priorities.