Cathexis Holdings
Cathexis Holdings LP serves as the single-family office for William Harrison, headquartered in Houston, Texas, managing multigenerational wealth from Texas oil interests.

Cathexis Holdings
Cathexis Holdings LP serves as the single-family office for William Harrison, headquartered in Houston, Texas, managing multigenerational wealth from Texas oil interests. The firm invests permanent capital across real estate developments, infrastructure, energy projects, private equity acquisitions, and early-stage venture capital through its Cathexis Ventures arm. It partners with operators and entrepreneurs on long-term opportunities using flexible structures, a streamlined governance model without boards or committees, and a 'hold forever' philosophy for growing businesses.
General information
Firm type
Single Family Office
Year founded
2006
AUM
—
Location
Region
North America
Country
—
City
Houston
Corporate office
1001 McKinney Street, Suite 1475, Houston, TX 77002
Frequently asked questions
What is Cathexis Holdings?
Cathexis Holdings is a single family office headquartered in Houston.
When was Cathexis Holdings founded?
Cathexis Holdings was founded in 2006.
Where is Cathexis Holdings headquartered?
Cathexis Holdings is headquartered in Houston, in the North America region.
What does Altss track for Cathexis Holdings?
Altss maintains an OSINT-verified profile of Cathexis Holdings covering investment focus (ESG policy, ticket size, target IRR, currency preference, regional focuses, industry focuses, technological focuses), team (service providers and advisors), deals (company deals and fund commitments), assets (real estate, public market positions, private companies, art and cultural holdings, philanthropy and foundations), and network (club memberships, associations, and event participation). Detailed values are available to Altss subscribers.
What is Cathexis Holdings's website?
Cathexis Holdings's public website is www.cathexis.com. Verified contact details for principals and decision-makers are available to Altss subscribers.
What type of firm is Cathexis Holdings?
Cathexis Holdings is classified by Altss as a Single Family Office within the North America region.
How does Altss source intelligence on Cathexis Holdings?
Altss combines OSINT (open-source intelligence) with regulatory filings, public disclosures, and licensed data partners. Source provenance is tracked to support compliance-ready research workflows.
How fresh is the Altss profile for Cathexis Holdings?
Cathexis Holdings's profile is part of Altss's continuous-refresh dataset, with a full update cycle at least every 30 days and priority changes applied as new information is verified.
Company types
Confirmed
Pipeline
Indicated
Negative
Industry focuses
Confirmed
Pipeline
Indicated
Negative
Regional focuses
Confirmed
Pipeline
Indicated
Negative
Technological focuses
Confirmed
Pipeline
Indicated
Negative
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Get accessInvestment stages
Confirmed
Pipeline
Indicated
Negative
Emerging interests
Hard exclusions
ESG policy
Direct deal program
Emerging manager LP program
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Get accessManager maturity preference
Confirmed
Indicated
Ticket size (USD M, min/max)
Preferred fund size (USD M, min/max)
Investment horizon (years, min/max)
Target IRR (%)
Max leverage
Liquidity terms
Currency preference
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Get accessPhilanthropy-only themes
Political donations
Service Providers & Advisors
| Category | Firm | Years Active | Primary Contact |
|---|---|---|---|
Company Deals
| Date | Company | Type | Sector | Geography | Role | Amount | Deal Lead | Co-investors | Insight |
|---|---|---|---|---|---|---|---|---|---|
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Get accessFund Commitments
| Date | Fund | Strategy | Geography | Role | Fund size | Vintage |
|---|---|---|---|---|---|---|
Club Memberships and Associations & Advisors
| Organization | Role | Since | Notes |
|---|---|---|---|
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Get accessEvent & Conference Participation
| Event | Role | Date | Location |
|---|---|---|---|
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Continuous refresh with full update cycles at least every 30 days.
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