Insurers' net investment income fell 2.5% to $46.2bn in 2014 from $47.3bn in 2013, ISO and the Property Casualty Insurers Association of America (PCI) have reported.
Annual insurers' realised capital gains on investments fell $1.3bn to $10.1bn in 2014 from $11.4bn a year earlier.
Combining net investment income and realised capital gains, overall net investment gains in 2014 fell $2.5bn, or 4.3%, to $56.2bn from $58.7bn in 2013.
The yield on insurers' investments eased to 3.2% in 2014 from 3.4% in 2013.
Adding the $10.1bn in realised capital gains to the $11.5bn in unrealised capital gains in 2014 resulted in insurers posting $21.6bn in overall capital gains for the year — down $26.0bn from the record $47.6bn in 2013.