Ever since the nation’s financial crisis, commercial banks and other depositories have dominated the second-lien business and likely will continue to do so in the coming years, but that isn’t stopping nonbanks from testing the waters once again. According to research by Inside Mortgage Finance, several nonbanks have slipped back into the market, albeit with muted production volumes. And many of the firms that have crept back in are partnering with depositories. The reason for the strategy is...