A.M. Best Co. has downgraded Allianz Life Insurance Co. of North America's financial strength rating to A from A-plus.
The Oldwick, N.J., ratings agency, which announced the downgrade Friday, said Allianz's increasing concentration in the annuity markets in recent years has exposed it to more interest rate risk and equity market risk than more diversified insurers.
Annuities make up about 90% of the Minneapolis company's premiums.