services. These revenues generally trend with direct premiums and escrow fees but are typically less volatile since a portion of the revenues are subscription based and do not fluctuate with transaction volumes.
Information and other revenues were $276.1 million and $776.4 million for the three and nine months ended September 30, 2025, respectively, increases of $34.4 million, or 14.2%, and $76.6 million, or 10.9%, when compared with the respective periods of the prior year. The increases were primarily due to an increase in refinance activity in the Company's Canadian operations, revenue growth in the Company's mortgage loan subservicing business and increased demand for the Company’s non-insured information products and services.
Net investment income totaled $153.1 million and $437.9 million for the three and nine months ended September 30, 2025, respectively, increases of $16.6 million, or 12.2%, and $59.0 million, or 15.6%, when compared with the respective periods of the prior year. The increases were primarily driven by increases in interest income from the Company’s investment portfolio, partially offset by lower interest income from operating cash due to lower balances and the impact of lower short-term interest rates.
Net investment gains of $6.4 million for three months ended September 30, 2025, were primarily attributable to changes in the fair values of marketable equity securities, which were partially offset by impairments on capitalized internal-use software totaling $12.5 million. Net investment losses of $2.5 million for nine months ended September 30, 2025, were primarily attributable to impairments on capitalized internal-use software totaling $48.1 million and losses recognized on sales of debt securities, partially offset by increases in the fair values of marketable equity securities. Net investment losses of $308.0 million and $283.1 million for the three and nine months ended September 30, 2024, respectively, were primarily attributable to losses realized from the Company’s investment portfolio rebalancing project during 2024, partially offset by increases in the fair values of marketable equity securities.
Personnel costs were $542.9 million and $1.6 billion for the three and nine months ended September 30, 2025, respectively, increases of $51.2 million, or 10.4%, and $120.9 million, or 8.5%, when compared with the respective periods of the prior year. The increases were primarily attributable to higher incentive compensation expense due to higher revenue and profitability and higher employee benefits, salaries, payroll taxes, severance and share-based compensation expenses.
Agents retained $640.1 million and $1.7 billion of title premiums generated by agency operations for the three and nine months ended September 30, 2025, respectively, which compares with $546.7 million and $1.5 billion for the respective periods of the prior year. The percentage of title premiums retained by agents was 80.1% for the three and nine months ended September 30, 2025, compared to 79.9% and 79.8% for the respective periods of the prior year.
Other operating expenses were $275.6 million and $799.8 million for the three and nine months ended September 30, 2025, respectively, increases of $23.8 million, or 9.5%, and $70.7 million, or 9.7%, when compared with the respective periods of the prior year. The increases were primarily due to higher production expenses on higher volumes and increases in software and travel expenses. The increase for the nine months ended September 30, 2025 was partially offset by a credit related to the release of a $5.7 million acquisition-related incentive obligation in the current year and also reflects the non-recurrence of a prior year out-of-period adjustment to expense that totaled $6.2 million.
The provision for policy losses and other claims, expressed as a percentage of title insurance premiums and escrow fees, was 3.0% for the three and nine months ended September 30, 2025 and 2024. The 3.0% loss provision rate for the three and nine months ended September 30, 2025 reflects an ultimate loss rate of 3.75% for the 2025 policy year and reserve releases of 0.75%, or $10.5 million and $28.8 million, respectively, for prior policy years, all based on title insurance premiums and escrow fees for the three and nine months ended September 30, 2025. The 3.0% loss provision rate for the three and nine months ended September 30, 2024 reflected an ultimate loss rate of 3.75% for the 2024 policy year and reserve releases of 0.75%, or $9.1 million and $25.0 million, respectively, for prior policy years, all based on title insurance premiums and escrow fees for the three and nine months ended September 30, 2024.
Depreciation and amortization expense was $53.5 million and $156.3 million for the three and nine months ended September 30, 2025, respectively, increases of $1.6 million, or 3.1%, and $4.7 million, or 3.1%, when compared with the respective periods of the prior year. The increases were primarily due to higher amortization of capitalized internal-use software from recently deployed digital settlement products.
Premium taxes were $20.9 million and $55.2 million for the three and nine months ended September 30, 2025, respectively, increases of $3.1 million, or 17.4%, and $10.2 million, or 22.7%, when compared with the respective periods of the prior year. Premium taxes as a percentage of title insurance premiums and escrow fees were 1.5% and 1.4% for the three and nine months