Kroll Bond Rating Agency on Oct. 16 affirmed Signature Bank's deposit rating and senior unsecured debt rating at A+; its subordinated debt rating at A; and its short-term deposit rating and short-term debt rating at K1.

The outlook on the long-term ratings is stable, reflecting the resilience of the New York, N.Y.-based company's capital under stress tests. In affirming the ratings, Kroll commented on Signature's "highly experienced management team" and on how the team's "deep knowledge of key markets" mitigates the rating agency's concerns about geographic concentrations.