This is what Standard Analytics (not to be confused with S&P) calls the "solvency ratio". It's one of a hundred factors the rating agencies look at....But one of the best ways to judge financial stability (at least imo) is the asset to liability ratio. Basically, how much do you have to cover your obligations.
Out of the top 25 largest Life Insurers, the average amount of assets per $100 of liabilities is around $105.
This means they have $5 above and beyond every $100 of promises.
AE, while BBB rated, has $107 per $100 of liabilities; $2 more than the average of the top 25 largest.
Thats a higher Asset to liability ratio than Pru, Trans, JN, JH, LFG, Met, Nationwide, Principle, Pac.
And they are only $1 less than NWM & Mass who are at $108 per $100 in liabilities.
(NYL & Guardian blow everyone out of the water with $113 & $115)