...WEX Inc.'s leverage improved over the past 12 months but remains aggressive. Net debt to EBITDA ended the first quarter of 2022 at 6.3x (using rolling-12-month EBITDA), which we view as high and a weakness for the rating. WEX's 6.8x EBITDA coverage of interest is stronger and provides some mitigating support. The company has a proclivity for acquisitions that could increase leverage in the future. We view the brokered deposits at WEX Bank as debt because they predominantly consist of short-term liabilities that must be repaid in under a year, unless renewed. This creates 1.5x to 2.0x of additional leverage when compared with WEX's term loan calculations and covenants. As a result, net debt to adjusted EBITDA has remained above 4.9x since its 2015 low. Since 2015, WEX has acquired the stock or assets of 10 companies for $3.7 billion in consideration, which includes $1.1 billion over the past 12 months....