Ratings agency A.M. best agrees, at least with respect to slowing reserve releases.

The ratings agency posits that “the industry has largely exhausted its reserve cushion, primarily as a result of significant reserve releases and the extent to which rate levels have been inadequate as a result of predominating soft-market conditions in recent years.”

While A.M. Best does expect reserve releases to continue through 2012, they will occur at a declining level—and that the increases to rates seen in recent months will not be sufficient to prevent a continued deterioration of the industry's overall core reserve deficiency.

A third analyst review reports that while reserves remain adequate, the industry is “flirting with inadequacy,” with Workers' Compensation presenting the greatest risk of experiencing deficiencies.

Stifel Nicolaus says in a report, “Reserves are still adequate, albeit weaker than at [year end 2010]—but inadequacies could emerge if inflation ramps up.”

According to Stifel Nicolaus analyst Meyer Shields, the $573.7 billion in consolidated reserves stands about $4 billion above what the firm determines to be the minimum adequate level.

Stifel Nicolaus says that in 2010, there was a reserve cushion of $11.6 billion cushion. In 2009, the cushion stood at $26.7 billion.

For the group of 55 insurance companies KBW follows, 2012's first quarter saw positive premium growth of 3.6 percent. Acquisitions accounted for some of that, but “organic growth and strong moves into specialty areas were major drivers,” says KBW, adding that it expects single-digit growth to continue. The group's combined ratio fell to 93.7 compared to 112 during 2011's first quarter.

The industry's strong first quarter follows a rough 2011. For the U.S. commercial-lines segment, A.M. Best says net income declined by 50.4 percent during 2011 compared to 2010, with underwriting losses tripling to $15.8 billion due mainly to catastrophe losses.