Specialty Property and Casualty Insurance Operations
Pretax core operating earnings in AFG’s P&C Insurance Segment were $274 million in the fourth quarter of 2020, compared to $199 million in the prior year period, an increase of $75 million, or 38%. Significantly higher year-over-year P&C underwriting profit and higher earnings from alternative investments were partially offset by lower other P&C net investment income, primarily the result of lower interest rates.
The Specialty P&C insurance operations generated an underwriting profit of $179 million for the 2020 fourth quarter compared to $89 million in the fourth quarter of 2019. Higher underwriting profitability in our Property and Transportation and Specialty Casualty Groups was partially offset by lower year-over-year underwriting profit in our Specialty Financial Group.
The fourth quarter 2020 combined ratio of 86.2% improved 7.3 points year-over-year and includes 2.4 points of favorable prior year reserve development, compared to 3.8 points of favorable prior year reserve development in the 2019 fourth quarter. Catastrophe losses added 1.5 points to the combined ratio in the 2020 fourth quarter, compared to 1.0 point in the comparable prior year period.
AFG did not record any additional reserve charges for COVID-19 in the fourth quarter. Given the uncertainties surrounding the ultimate number or scope of claims relating to the pandemic, approximately 72% of AFG’s COVID-19 related reserves from the $95 million in charges recorded in the first half of 2020 are held as incurred but not reported (IBNR) at December 31, 2020. These reserves represent the Company’s current best estimate of losses from the pandemic and related economic disruption.
Gross and net written premiums were down 2% and 7%, respectively, for the fourth quarter of 2020, when compared to the same period in 2019, primarily as the result of the run-off of Neon. Excluding the impact of the Neon run-off, gross and net written premiums increased 6% and 2%, respectively, year-over-year.
Average renewal pricing across our entire P&C Group was up approximately 13% for the quarter. Excluding our workers’ compensation business, renewal pricing was up approximately 17%. Renewal pricing in 2020 was the highest we have achieved in more than fifteen years in each of our Specialty P&C sub-segments and in our Specialty P&C Group overall.
Further details about AFG’s Specialty P&C operations may be found in the accompanying schedules.
The Property and Transportation Group reported an underwriting gain of $74 million in the fourth quarter of 2020, compared to an underwriting loss of $2 million in the comparable prior year period. Improved year-over-year results in our crop operations following 2019 losses from prevented planting, along with significantly improved accident year results in our aviation business and higher profitability in our transportation businesses were the primary drivers of the improved results. Catastrophe losses for this group were $6 million and $7 million in the fourth quarters of 2020 and 2019, respectively.
Fourth quarter 2020 gross written premiums in this group were up 3% and net written premiums were down 2% when compared to the 2019 fourth quarter. Growth and new business opportunities in our property & inland marine and ocean marine businesses and higher gross written premiums in our crop operations were partially offset by lower premiums in our transportation business, primarily from reduced exposures as a result of COVID-19 and premium reductions in two large national accounts. Higher cessions of certain crop insurance products contributed to the year-over-year decrease in net written premiums in the 2020 fourth quarter. Overall renewal rates in this group increased 5% on average for the fourth quarter of 2020 and 6% overall for the full year.
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