Asset totals and net income at the biggest U.S. insurers are showing signs of improvement.

Highline Data, Cambridge, Mass., a unit of Summit Business Media L.L.C., Erlanger, Ky., published insurer statutory financial data for the second quarter of 2010 just a few hours after the National Association of Insurance Commissioners, Kansas City, Mo., released the data. The initial data release includes figures from more than 700 U.S. life and health insurers.

Highline is not yet providing industry totals, because some insurers have not yet filed their results, but a quick look suggests that assets may have increased about 2%, to about $3.3 trillion.

The 5 life and health companies with the most assets seem to have increased total assets about 1.9%, to $837 trillion, and those companies seem to have increased their total net income for the first half of the year to about $1.7 billion, from $624 million for the first half of 2009. The companies’ net premium total increased 1.5%, to about $41 billion.

For the top 10 carriers, assets and net income seem to be up, and premiums seem to be down.