Single Family OfficeRIA · CRD 159792SEC-RegisteredPrivate Fund Adviser

Updated:

Tudor

David Cornhill's Tudor family office deploys energy-transition returns into private infrastructure, credit, and real assets from Houston and Calgary.

Tudor

Tudor was formed in 1996 by David Cornhill, the founder and former CEO of AltaGas, a publicly traded Canadian energy infrastructure company he built into a multi-billion-dollar midstream operator. The family office emerged alongside AltaGas's public-market growth, providing a private vehicle for Cornhill's personal capital as his public-company stake generated liquidity. The wealth underlying Tudor is rooted in decades of North American natural gas processing, storage, and energy logistics. The firm deploys capital across private infrastructure, downstream energy services, commercial real estate, and private credit, with a preference for direct and co-investment structures rather than blind-pool fund commitments. Geographic concentration centers on Western Canada and Texas, reflecting the Cornhill family's historical operating corridors and current Texas headquarters. Known direct investments include control positions in cold storage logistics and mid-market energy services companies, with deployment sourced through the family's operator network rather than banked auction processes. Tudor runs a lean team from Houston and Calgary, operating as a traditional single-family office without external LPs or a multi-family overlay. The Cornhill family maintains a separate charitable foundation, though its grantmaking remains largely private. February 2025: Tudor participated in a significant Calgary-based distressed real estate recapitalization, acquiring a mixed-use portfolio previously held by a Canadian REIT (per Bloomberg, February 2025). What distinguishes Tudor is its operator-anchored sourcing model—the family office does not actively market itself as a financial sponsor but instead deploys alongside former AltaGas executives and regional operators who originate deals off-market. This model avoids institutional auction competition and aligns with the multi-decade, low-turnover posture of a family that has already institutionalized its primary wealth vehicle through AltaGas's public listing.

Website
altagas.ca

General information

Firm type

Single Family Office

Year founded

1996

AUM

Undisclosed

Location

Region

North America

Country

United States

City

Houston

Corporate office

Houston, TX, United States

Additional offices

Calgary, Canada

Principals

David Cornhill

Founder

Sector focus

Energy Transition & RenewablesInfrastructureReal EstatePrivate CreditPrivate Equity

Frequently asked 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.

Profile maintained by using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.

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