# Tudor

Tudor is a Single Family Office based in Stamford, United States.

## Overview

- **Organization type:** Single Family Office
- **Headquarters:** Stamford, United States
- **Region:** North America
- **Address:** Houston, TX, United States
- **Founded:** 1996
- **Assets under management:** Undisclosed
- **Website:** altagas.ca
- **LinkedIn:** https://www.linkedin.com/company/tudor

## About

Tudor is an SEC-registered investment adviser in Stamford, CT, registered since 2012. It manages $106.8 billion in regulatory assets. The firm has 483 employees and 275 investment advisers.

## Sectors

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

## Offices

- Calgary, Canada

## People

- David Cornhill — Founder

## Questions

### How is Tudor related to AltaGas?

Tudor is the family office of David Cornhill, who founded AltaGas in 1994 and served as its CEO until 2018. AltaGas remains a separate, publicly traded energy infrastructure company on the Toronto Stock Exchange. Tudor manages Cornhill's private investments and is not a corporate subsidiary of AltaGas, though its capital base originated from his AltaGas equity.

### What does Tudor invest in directly versus through funds?

Tudor favors direct and co-investment structures over fund commitments. The office targets private midstream infrastructure, energy services, commercial real estate, and private credit, with a geographic focus on Western Canada and Texas. The family maintains control positions and avoids blind-pool fund allocations where possible, relying on its network of former operators to source deals.

### Does Tudor accept outside capital from other families or institutions?

No. Tudor is structured as a traditional single-family office and does not raise third-party LP capital. It serves the Cornhill family exclusively, without any multi-family office overlay or external co-investment syndicate.

### Who makes investment decisions at Tudor?

David Cornhill retains final authority over Tudor's investment decisions, supported by a compact internal team across Houston and Calgary. The office does not operate with a formal investment committee structure open to non-family members.

### Where does Tudor source its deal flow?

Tudor sources opportunities primarily through the Cornhill family's multi-decade network of former AltaGas executives, energy operators, and regional developers in Western Canada and Texas. This operator-anchored approach generates off-market deal flow and avoids competitive banked-auction processes typical of institutional private markets.

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- [GNTech](https://altss.com/profile/gntech)
- [Eideard Venture Capital](https://altss.com/profile/eideard-venture-capital)

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Last updated: 2026-07-06T01:24:27.543Z

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