A successful systematic credit strategy is not just about predicting returns. It equally relies on accurately forecasting the associated risks and, crucially, the transaction costs, described as avoiding giving a 'liver and a kidney to Goldman Sachs.'

Unlike equity investors hunting for uncapped upside, debt lenders have a fixed return and are intolerant to losing principal. This forces them to be paranoid about downside risk and worst-case scenarios. Their diligence process is often more thorough and thoughtful, providing a different and rigorous lens on the business.

Effective due diligence isn't a checklist, but the collection of many small data points—revenue, team retention, customer love, CVC interest. A strong investment is a "beam" where all points align positively. Any misalignment creates doubt and likely signals a "no," adhering to the "if it's not a hell yes, it's a no" rule.

Private credit allows investors to act like chefs—deeply involved from ingredient sourcing (diligence) to final creation (structuring). Liquid market investors are like food critics, limited to analyzing the finished product with restricted access to information, which increases risk.

A crucial, yet unquantifiable, component of alpha is avoiding catastrophic losses. Jeff Aronson points to spending years analyzing companies his firm ultimately passed on. While this discipline doesn't appear as a positive return on a performance sheet, the act of rigorously saying "no" is a real, though invisible, driver of long-term success.

The private credit market has seen little difference in returns between managers in recent years. However, a changing economic environment is expected to create significant dispersion, where managers with superior credit selection and origination capabilities will pull away from the pack.

In bond investing, where upside is capped at a promised return, superior performance comes from what you exclude, not what you buy. The primary task is to eliminate the bonds that will default. Once those are removed, all the remaining performing bonds deliver a similar, contractually-fixed return.

The fundamental model of private credit is sound. The primary risk stems from the sector's own success, which has attracted massive capital inflows. This creates pressure for managers to deploy capital, potentially leading to weakened underwriting standards and undisciplined growth.

Goodwin argues against the passive "index-hugging" approach to credit focused on coupon payments and agency ratings. Diameter's edge comes from approaching credit like an equity long-short fund, constantly analyzing what macro and sector trends will change security prices over the next 3 to 24 months to generate total return.