Key Takeaways

  • Mid-market managers capture development spreads by structuring and de-risking assets specifically for large-cap core fund mandates.
  • Fengate deploys a dedicated 45-person technical value creation team to manage construction and operational turnarounds directly.
  • The build-to-core strategy develops assets through stabilization before passing them to mega-funds requiring larger check sizes.
  • Optimize-to-core focuses on physical engineering and operational upgrades on existing platforms across water utilities, short-line rail, and data centers.
  • Underwriting transportation assets often requires modeling underlying supply-demand dynamics rather than relying purely on long-term contracts.

Manufacturing Core Assets for Mega-Funds

Large-cap infrastructure funds face a deployment problem. They sit on massive pools of capital that require low-risk, cash-flowing platforms, but they lack the operational bandwidth to build or troubleshoot smaller physical assets. Mid-market managers are stepping directly into that gap.

Mac Bell of Fengate Asset Management frames their strategy around two distinct paths: build to core and optimize to core. Instead of competing with mega-funds on check size, Fengate develops or rehabilitates assets in the middle market, de-risks them mechanically, and sells them up the food chain.

“We're a build to core manager. That's one of our focuses, build, build to core, optimize to core, so we can add value through actually completing construction on mid-market assets as well,” Bell explains. “And we know there's a large buyer pool there because there's still bigger players that want larger assets than what we're willing to write checks for.”

This is an arbitrage on risk tolerance and scale. Mid-market funds take early construction and operational risk, capture the development margin, and exit once the asset matches the cash flow profile required by institutional core buyers.

Operational Muscle Over Financial Engineering

Executing this transition requires deep in-house engineering capabilities rather than simple financial structuring. Fengate runs an internal 45-person technical value creation team tasked with direct asset oversight. The team handles contractor selection, monitors build timelines, and identifies physical upgrades that expand capacity or improve margins.

In the build-to-core playbook, the firm identifies a greenfield or early-stage project, oversees the build phase with general contractors, and manages the initial operational ramp. “I think that's where we are specialized in, in either building to core, meaning that we develop an asset, bring in a contractor, using our technical team, build that asset, and then stabilize it and able to exit it to a core fund,” Bell notes.

For existing platforms, the optimize-to-core path applies the same technical team to spot operational inefficiencies. “Or we're optimizing to core, again with our technical team, looking for things we can do to improve the asset, stabilize it, and then sell it on up the food chain, as we discussed earlier, being a mid-market player.”

In sectors like transportation and short-line rail, contractual revenue guarantees are not always available. Bell points out that risk underwriting in these sectors shifts toward structural volume: “You know, that could be through contracts, but oftentimes with large transportation assets, it's really an underwrite of the supply-demand dynamic.”

Why It Matters

This execution playbook reflects a structural shift in private infrastructure. The traditional model of buying operational utilities and layering on cheap debt has tightened alongside higher interest rates. Mid-market sponsors generate their alpha by acting as outsourced developers and operational fixers for larger core funds, capturing higher returns during the riskiest phases of an asset life cycle while maintaining a pre-identified institutional exit route.