I checked their website and it seems that they classify their business into 3 categories: Operating Lease Assets, Loan Portfolio and Securitization Assets and Alternative Assets.
In layman's terms:
Operating Lease Assets: They have a share in fixed assets that provide rent as a cashflow.
Loan Portfolio and Securitization Assets: They have a portfolio consisting of a multitude of loans made out to different firms and sectors.
Alternative Assets: Basically other types of "loan assets" not covered in the first two categories. Currently, their looking into renewable fuels and alternative energy loan exposure.
In even layman's terms, their a fund whom cashflow comes from loans.
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