RLI is a specialty property and casualty insurer focused exclusively on niche, hard-to-place risks across the U.S. Rather than competing in standard insurance markets where coverage is commoditized, RLI underwrites risks that don't fit standard carriers' criteria — including commercial excess and umbrella liability, specialty commercial property (earthquake, wind, flood), professional liability for small businesses, commercial transportation, and surety bonds. RLI distributes primarily through wholesale and retail brokers and independent agents, rather than selling directly to end customers. RLI operates three segments: Casualty (~60% of net premiums earned), Property (~31%), and Surety (~9%). The Casualty segment is the largest and fastest-growing, led by commercial excess and personal umbrella coverage. The Property segment covers specialty and surplus lines commercial property risks, marine, and Hawaii homeowners. Surety covers performance and payment bonds for construction, financial services, and other commercial customers. RLI earns money through underwriting income and investment income from its float. RLI's underwriting model centers on niche discipline — deliberately avoiding commoditized markets and focusing on risks where expertise matters more than price. Underwriters are compensated based on the profitability of their own book, incentivizing margin discipline over volume. RLI uses reinsurance to limit catastrophe exposure, ceding roughly 20% of gross premiums. The investment portfolio is conservatively managed, roughly 76% fixed income. RLI's growth approach is explicitly counter-cyclical: expanding where risk-adjusted returns are attractive and contracting where pricing softens, with no explicit top-line growth targets.