Zimmer Partners LP

Jonathan M. Zimmer is the founding managing partner and controls final investment decisions. He previously worked at Goldman Sachs and Fortress Investment Group. Partners John L. Auerbach and James M. E. G. Zimmer also play key roles in sourcing and executing deals.

The firm focuses on special situations and infrastructure assets that are often off-market or require complex structuring — deals that few other managers can execute due to scale, capital intensity or regulatory complexity. Its Tokyo office suggests a particular sourcing advantage in Japanese infrastructure and energy transition.

Zimmer Partners targets control or influential positions in cash-flowing assets with hard-asset backing and long-duration revenue. This includes direct investments in operating infrastructure, asset-based private credit, and energy transition projects, rather than venture-stage or growth equity.

The firm focuses on infrastructure, private credit, energy transition and renewables, real estate, and special situations. It does not appear to focus on traditional liquid markets, venture capital, or technology startups.

Zimmer Partners LP operates as an independent registered investment adviser, not as a single- or multi-family office. No publicly disclosed family wealth origin or family office affiliation exists.

The firm appears to operate primarily through direct investments alongside co-investors, with a track record of partnering with institutional capital providers. It does not market commingled funds to third-party investors.

Zimmer Partners has historically co-invested with large institutional capital providers in infrastructure and credit deals, acting as an operating or structuring partner rather than a passive LP.