---
title: "What Is Fund of One?"
term: "Fund of One"
description: "A fund of one is a bespoke fund structure where a single LP's capital is pooled in a dedicated vehicle that invests alongside or through a GP—custom terms without a broader LP base."
date: 2026-07-25T00:00:00.000Z
updated: 2026-07-25T00:00:00.000Z
topics: ["venture-capital"]
source: https://venturecapitaltracker.com/glossary/fund-of-one
---

# What Is Fund of One?

> A fund of one is a bespoke fund structure where a single LP's capital is pooled in a dedicated vehicle that invests alongside or through a GP—custom terms without a broader LP base.

**A fund of one** is a tailored investment vehicle serving primarily one large LP—combining fund legal structure with negotiated economics and mandate specificity.

## How it works

Instead of raising a commingled fund from many LPs, the GP and a single allocator establish a dedicated LP entity. Terms—fees, carry, investment scope, reporting, and co-invest rights—are negotiated bilaterally. Capital may flow through the vehicle into the GP's main fund, into direct deals, or into a segregated portfolio managed by the same team. The structure gives the LP confidentiality, custom reporting, and sometimes lower fees than the GP's flagship fund. For the GP, it secures a large anchor without broad marketing. Regulatory and tax treatment still follows private fund rules despite having one dominant backer.

## Why it matters

- **Founders:** Capital from a fund-of-one may move quickly and carry strategic alignment from a single deep-pocketed LP—but decision paths can differ from a traditional partnership vote.
- **Investors:** Large LPs gain bespoke access; emerging GPs may use fund-of-one arrangements as a stepping stone before a flagship fundraise.

## Common mistake

Confusing fund of one with a simple co-invest check. The vehicle may have ongoing management, multiple deals, and fund-style governance—not a one-off SPV for a single company.

## Related ideas

Separately managed accounts, anchor LP side letters, co-investment rights, and bespoke mandate funds.

## FAQ

### What is a fund of one in simple terms?

It is a private fund built for one main investor, with documents and economics negotiated just for them instead of a standard multi-LP fund.

### Why does a fund of one matter?

Sovereign wealth funds and large institutions use them for customized mandates, fee terms, or privacy. Founders may encounter them as capital that behaves like a dedicated strategic pool.


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Source: https://venturecapitaltracker.com/glossary/fund-of-one