For all intents and purposes, LendingTree has been in the mortgage business since its inception. The company experimented with a myriad of business models, including a foray into loan origination through their LendingTree Loans product line, which they ultimately sold off to Discover in 2011. Even in 2013, only 11% of their revenue originated from non-mortgage products. LendingTree has expanded their platform in a few short years to build their non-mortgage products including credit cards, HELOCs, personal, auto, and small business loans. They have also pursued credit repair services and deposit accounts, with insurance in the pipeline. Whereas mortgage revenue made up roughly 60% of total sales in Q2 2016, it dropped to 36% as of this quarter. They wanted to diversify their product mix, but they realized they were also leaving money on the table.

https://techcrunch.com/2018/09/09/lendingtree-is-the-secret-success-story-of-fintech/