# AQI

AQI is an Asset Manager based in Lone Tree, United States.

## Overview

- **Organization type:** Asset Manager
- **Headquarters:** Lone Tree, United States
- **Region:** North America
- **Address:** New York, NY, United States
- **Founded:** 2009
- **Assets under management:** Undisclosed
- **Website:** aqi-capital.com
- **LinkedIn:** https://www.linkedin.com/company/aqi-ag

## Regulatory record

- **CRD number:** 339159
- **SEC file number:** 801-135052
- **Registration status:** Registered
- **Reports private funds:** No
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/339159

## About

AQI is an SEC-registered investment adviser in LONE TREE, CO, registered since 2026. The firm has 11 employees and 5 investment advisers.

## Sectors

- Private Credit
- Real Estate
- Energy Transition & Renewables
- Infrastructure

## People

- Mark G. Essner — Founder and Chief Investment Officer

## Questions

### Who makes investment decisions at AQI?

Mark G. Essner, the firm's founder and Chief Investment Officer, leads investment strategy and credit committee decisions. Essner's background includes a prior senior role at BlackRock, where he developed the credit and risk framework that informs AQI's lending approach. The firm's lean structure keeps final investment authority concentrated with Essner and a compact senior team.

### How does AQI source its lending opportunities?

AQI sources transactions primarily through direct relationships with middle-market sponsors, commercial real estate developers, and renewable energy project operators. The firm's origination model relies on repeat borrower networks built since 2009 rather than competing in broadly auctioned syndications. This relationship-driven pipeline is a consequence of AQI's size and its willingness to structure bespoke financing outside standard bank parameters.

### What investment sectors does AQI target for credit deployment?

AQI focuses on three credit verticals: private corporate credit, including senior secured and mezzanine loans to sponsor-backed companies; commercial and multifamily real estate bridge and acquisition financing; and energy transition and infrastructure credit, notably solar and battery storage project financing. The firm's real-asset and cash-flow orientation means it avoids sectors without hard collateral or visible revenue streams.

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Last updated: 2026-06-03T20:00:00.000Z

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