Deals get discipline.
The capital around them
doesn't.

LPs commit on day zero. Capital calls happen on a different schedule. The window between commitment and deployment routinely sits in bank accounts paying a 0.38% national average, while the same money, at the same same-day liquidity, earns roughly 3.53% in an institutional Treasury money fund. Extending to a 6–18 month horizon reaches ~4% — but that is a different risk posture, not a free upgrade.

On a typical mid-market fund with a long deployment curve, that annualized yield delta translates to material recoverable yield each year. The exact figure depends on fund size, idle share, and liquidity tolerance. Treasury reporting at this resolution requires dedicated headcount that mid-market sponsors typically do not staff internally.

A deal exits. Cash hits the fund. The next deployment is six weeks out. In a public-markets context the cash earns the prevailing institutional rate. In a typical sponsor context it earns whatever the operating bank pays — often nothing.

Six weeks is a small number. Across a multi-deal portfolio over a fund life, those windows accumulate to a measurable percentage of the IRR a GP reports to LPs.

Capital sitting in special purpose entities, escrow accounts, and side-letter vehicles. Capital between deal closing and capital call. Capital held back for working-capital needs. Each of these is its own micro-balance, often invisible from the GP's seat, and none of them earn institutional yield by default.

The gap is operational, not strategic. Sponsor-scale firms historically face a binary choice: hire an internal treasurer or absorb the bleed. HMG provides the third path — institutional treasury operations delivered as a service.