CaseMark Analyzing Property Casualty Lines
When To Use
- Evaluating profitability and underwriting performance of specific P&C lines (commercial auto, GL, property, workers' comp, professional liability, etc.)
- Tracking market cycle position (hard vs. soft market) for pricing and capacity decisions
- Performing loss cost trending to project future loss development
- Assessing competitive positioning within a line or geographic market
- Supporting reinsurance purchasing decisions with line-level performance data
- Preparing portfolio reviews for underwriting committees or investor reporting
Inputs To Gather
- Line-of-business data: Written premium, earned premium, incurred losses (paid + reserved), ALAE/ULAE splits, policy counts by line
- Loss triangles: Accident-year or policy-year development triangles (paid and incurred) with a minimum of 5–10 development periods
- Rate change history: Rate filings, rate adequacy studies, or renewal rate change tracking by quarter
- Expense data: Commission rates, acquisition costs, general expenses, and combined ratio components
- Market benchmarks: Industry combined ratios, rate-on-line indices, AM Best or S&P segment reports, ISO/NCCI aggregate data [VERIFY: benchmark availability varies by line and jurisdiction]
- Catastrophe exposure: PMLs, AALs, or cat model output for property-exposed lines
- Regulatory context: Rate filing requirements, prior-approval vs. file-and-use status by state [VERIFY: filing requirements by state and line]
Workflow
Define scope and segmentation
- Identify target lines (e.g., commercial property, general liability, personal auto)
- Set the analysis period (typically 5–10 accident years for trend credibility)
- Determine segmentation: by state, policy size, distribution channel, or coverage sub-type
Develop loss costs
- Select development method (chain-ladder, Bornhuetter-Ferguson, or Cape Cod) based on data maturity and volatility
- Apply loss development factors to bring immature years to ultimate
- Trend historical losses to prospective cost level using loss cost trend factors (severity + frequency)
- Adjust for one-time events: strip out or cap large losses, isolate catastrophe losses from attritional
- On-level earned premiums to current rate levels to enable apples-to-apples comparison
Analyze market cycle position
- Plot historical combined ratios and rate changes over 10+ years to identify cycle phase
- Compare current rate adequacy to indicated loss costs — gap signals where the cycle is heading
- Assess supply-side indicators: carrier entries/exits, capacity changes, reinsurance pricing shifts
- Evaluate demand-side factors: exposure growth, insured value inflation, emerging liability trends
- Classify current position: hardening, hard, softening, or soft, with supporting evidence
Perform competitive assessment
- Benchmark combined ratio, loss ratio, and expense ratio against top-5 and industry-average peers
- Identify market share trends: growing, stable, or contracting relative to competitors
- Evaluate product differentiation: coverage breadth, endorsement strategy, claims service reputation
- Assess distribution advantage: agency relationships, binding authority, digital channel penetration
- Note competitive moats or vulnerabilities (e.g., data advantage in niche lines, adverse selection risk)
Synthesize findings and recommendations
- Rank lines by risk-adjusted return: calendar-year combined ratio, accident-year loss ratio, and reserve adequacy
- Flag lines requiring remediation (rate increases, non-renewal actions, coverage restriction)
- Identify growth opportunities where rate adequacy exceeds target and competitive position is strong
- Quantify reinsurance implications: lines where volatility warrants increased cession or restructured treaties
Output
- Line Performance Summary Table: Each line with earned premium, loss ratio (calendar and accident year), expense ratio, combined ratio, rate change trend, and cycle position classification
- Loss Development Exhibit: Selected ultimate losses by accident year with selected LDFs and methodology notes
- Market Cycle Chart: Visual overlay of combined ratio and rate changes over time with cycle phase annotations
- Competitive Positioning Matrix: 2×2 or ranked grid showing relative profitability vs. market share position
- Recommendations: Prioritized action items per line — grow, maintain, remediate, or exit — with supporting rationale
Quality Checks
- Confirm loss triangles reconcile to financial statement Schedule P or statutory filings [VERIFY: reconciliation targets depend on reporting entity type]
- Validate that on-leveling factors correctly reflect cumulative rate changes, not just filed changes
- Verify trend selections are supportable: compare selected severity/frequency trends against industry benchmarks and historical fit
- Ensure catastrophe vs. attritional loss separation is consistent across all accident years
- Cross-check combined ratio components sum correctly (loss ratio + DCCE ratio + expense ratio = combined ratio)
- Confirm market benchmark data is from the same reporting period and line definition as the subject portfolio
- Flag any line where data credibility is low (fewer than 1,000 claims or 3 development periods) with [VERIFY]