---
title: Co-Investment - Definition & Examples | RGM® Glossary
url: https://realgrowthmatters.com/glossary/co-investment/
updated: 2026-06-10
source_html: https://realgrowthmatters.com/glossary/co-investment/
---

Growth Glossary — Definition

SHT CO-INVESTMENT

# Co-Investment

LP direct investment alongside fund. A working definition from the RGM marketing glossary.

LP direct investment alongside fund.

Term
:   Co-Investment

Field
:   Private Equity

Category
:   Capital & Investing

## What the term covers

Start here.Treat Co-Investment as a capital concept with a clear scope. Two people using the term should mean the same thing.

LP direct investment alongside fund.

In Capital & Investing, Co-Investment names a capital concept. Pin the meaning down early and the strategy stays coherent.

## How it operates

Hold that thought.Co-Investment works one way for a lean team and another for a large one. The mechanics follow the context.

Think of Co-Investment as context-bound. A small shop reads it simply; an enterprise reads it with more nuance. That is normal -- Co-Investment is shaped by audience and channel mix. Read Co-Investment without care and the plan wobbles; be precise and the read holds.

Keep the order simple: define Co-Investment for your context, then decide how to act. Reverse it and the budget chases a number nobody agreed on. Keep this in mind.

## The decisions it touches

Here is the short version.Co-Investment earns attention at three moments: setting budget, choosing a metric, comparing options. Away from those, it waits.

Bring Co-Investment in when a live choice hangs on it. In capital & investing work, that usually means one of three moments. Away from a decision, Co-Investment is background, not a lever.

1. **Setting budget.** Co-Investment helps decide which channel gets the next dollar.
2. **Choosing a metric.** Co-Investment reveals if the metric measures real impact.
3. **Comparing options.** Co-Investment keeps a head-to-head from fooling the reader.

## A concrete walk-through

One idea, plainly put.The walk-through runs Co-Investment through work modeled on a Series B marketplace, so the concept meets real constraints.

Take a Series B marketplace. During a CAC-to-LTV review, the team made Co-Investment the deciding input, not an afterthought. They set a baseline first, agreed one definition of Co-Investment, and only then read the result: runway extended after re-pricing a 3:1 segment. The number matters less than the order.

The numbers behind Co-Investment -- illustrative only, RGM analysis

| Stage | The step taken | Why it mattered |
| Baseline | Took a before reading on Co-Investment. | A reference to judge against. |
| Define | Fixed one meaning of Co-Investment for the test. | No room for scope drift. |
| Act | A CAC-to-LTV review — one variable. | One change, a clean read. |
| Result | Runway extended after re-pricing a 3:1 segment | A decision the data earned. |

These Co-Investment numbers are illustrative -- RGM analysis. The structure travels; the specific figures do not.

## Mistakes worth avoiding

Hold that thought.Four failure modes recur with Co-Investment. Name them and they are easy to design around.

- **No segments.** Treating Co-Investment as one number for all. Break it out before you trust it.
- **No anchor.** Quoting Co-Investment without a starting point. Always pair it with a baseline.
- **Wrong target.** Treating Co-Investment as the goal. The goal is the outcome it predicts.
- **Bad compares.** Benchmarking Co-Investment with no adjustment. Account for the model differences first.

## Questions teams ask

How is Co-Investment defined?

LP direct investment alongside fund. In short, fix that meaning before any tactic is debated.

What makes Co-Investment worth knowing?

Co-Investment shows up in budget reviews and channel reporting. Use it loosely and teams pull apart; use it precisely and the numbers line up.

How do teams use Co-Investment?

Co-Investment informs a decision -- most often a budget, a metric choice, or a comparison. The a Series B marketplace example above shows the pattern.

What goes wrong with Co-Investment most often?

Treating Co-Investment as one blanket rule and reporting it with no baseline. Both hide a soft assumption.

Where can I learn more about Co-Investment?

Start with the related terms below, then read the guide on marketing mix modeling, plus marketing attribution models.

How is Co-Investment defined?
:   LP direct investment alongside fund. In short, fix that meaning before any tactic is debated.

What makes Co-Investment worth knowing?
:   Co-Investment shows up in budget reviews and channel reporting. Use it loosely and teams pull apart; use it precisely and the numbers line up.

How do teams use Co-Investment?
:   Co-Investment informs a decision -- most often a budget, a metric choice, or a comparison. The a Series B marketplace example above shows the pattern.

### Keep reading

### Related terms