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TTM Q1 '26TTM Q4 '25TTM Q3 '25TTM Q2 '25TTM Q1 '25
Premiums Earned Net by Business
Core Commercial Lines$2.23B+3.4%$2.21B+2.9%$2.2B+4.0%$2.18B+3.9%$2.16B+4.2%
Personal Lines$2.57B+4.0%$2.55B+4.5%$2.53B+5.3%$2.5B+5.6%$2.47B+5.4%
Specialty Lines$1.42B+5.8%$1.4B+5.8%$1.39B+6.7%$1.37B+6.0%$1.34B+5.0%

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Questions, answered.

How does The Hanover Insurance Group break its business down?
The Hanover Insurance Group (THG) reports premiums earned net by business across 4 parts — All Other Segments, Core Commercial Lines, Personal Lines and Specialty Lines. Each is extracted from the segment footnotes and tracked over time.
Where does The Hanover Insurance Group's segment data come from?
Segment breakdowns are pulled from the segment footnotes in The Hanover Insurance Group's SEC filings (the XBRL dimensional tags), so every line ties back to a reported figure. Switch between quarterly, annual, and TTM, or open any segment for its full history.