Castletop Capital (Topfer Family Office)
Castletop Capital (Topfer Family Office) is a single-family office headquartered in Austin. Founded in 2000, the firm stewards wealth created by Mort Topfer’s Dell vice-chairmanship and earlier leadership at Motorola.

Castletop Capital (Topfer Family Office)
Castletop Capital (Topfer Family Office) is a single-family office headquartered in Austin. Founded in 2000, the firm stewards wealth created by Mort Topfer’s Dell vice-chairmanship and earlier leadership at Motorola. It deploys approximately $250 million of committed capital into Texas-oriented real estate developments, cash-flowing operating companies and selective venture-backed technology investments—providing active, operationally informed equity support.
General information
Firm type
Single Family Office
Year founded
2000
AUM
—
Location
Region
North America
Country
—
City
Austin
Corporate office
3600 N. Capital of Texas Hwy Bldg. B, Suite 320 Austin, TX 78746
Frequently asked questions
What is Castletop Capital (Topfer Family Office)?
Castletop Capital (Topfer Family Office) is a single family office headquartered in Austin.
When was Castletop Capital (Topfer Family Office) founded?
Castletop Capital (Topfer Family Office) was founded in 2000.
Where is Castletop Capital (Topfer Family Office) headquartered?
Castletop Capital (Topfer Family Office) is headquartered in Austin, in the North America region.
What does Altss track for Castletop Capital (Topfer Family Office)?
Altss maintains an OSINT-verified profile of Castletop Capital (Topfer Family Office) 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 Castletop Capital (Topfer Family Office)'s website?
Castletop Capital (Topfer Family Office)'s public website is www.castletopcapital.com. Verified contact details for principals and decision-makers are available to Altss subscribers.
What type of firm is Castletop Capital (Topfer Family Office)?
Castletop Capital (Topfer Family Office) is classified by Altss as a Single Family Office within the North America region.
How does Altss source intelligence on Castletop Capital (Topfer Family Office)?
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 Castletop Capital (Topfer Family Office)?
Castletop Capital (Topfer Family Office)'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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