This document is a report that analyzes data from Form 5500 filings to provide information on the prevalence and characteristics of self-insured, mixed-insured, and fully-insured group health plans. It also examines the financial health of employers that sponsor these different types of plans using data matched from Form 5500 filings and external financial sources. The report discusses revisions to the methodology used to classify plans based on the Form 5500 data and highlights limitations and data quality issues.