Welcome to the Open
Doors Investor Portal

 Access curated investment opportunities, portfolio insights, and resources
available exclusively to verified members of our network.

 

This portal is designed for current and verified members of the Open Doors investor network. While our public site introduces our philosophy and model, this page gives you access to ongoing opportunities, historical context, and relevant insights — available only through a trusted relationship. All content is compliant with Rule 506(b) and is not a public solicitation.

Current Opportunities

Explore select investment vehicles currently accepting interest.
 Each deal is structured through a unique Series SPV under our Delaware Series LLC. 
If something aligns with your thesis, schedule a call to learn more.

ACCEPTING INTEREST

Series Cerebras

AI/Deep Learning Hardware

Structure: Primary

Stage: Late-stage growth

Geography: North America

CLOSED

Series Perplexity

Equity - AI Search Platform

Structure: Primary

Stage: Late-stage

Timeline: Closed: Sep'25

For a more curated list of opportunities, schedule a call with us.

Our Track Record

Since 2017, Open Doors Partners has:

Launched over 25 individual SPVs across venture, real estate, and secondaries

Averaged 3–4 year hold periods across past investments

Maintained a high-touch, transparent model for capital calls, distributions, and reporting

Case Studies
Boom Supersonic

Boom Technologies

Boom Supersonic is building Overture — a Mach 2.2 airliner capable of flying 55 passengers at 2,300 km/h. Boom raised $151M across early venture rounds to bring back supersonic commercial flight.

Asset TypeSupersonic Aircraft
RoundSeries B
Total Equity Raised$151 million
Co-Investors (flexible)
Y Combinator, Japan Airlines, SV Angel, 8VC, Emerson Collective, and more
Opendoor

Opendoor

Opendoor is a leading platform for buying and selling homes directly. Backed by top investors, it operates in 20+ U.S. cities with $1.5B raised.

Asset TypeLate Stage Venture
RoundSeries D, E
Total Equity Raised$1.5 billion
Co-Investors (flexible)
SoftBank, General Atlantic, Norwest Venture Partners, Khosla Ventures, GGV Capital, and more
Virta Health

Virta Health

Virta Health helps patients reverse type 2 diabetes using personalized nutrition, real-time data, and virtual care. Backed by leading health-tech investors.

Asset TypeType 2 Diabetes Reversal
RoundSeries C
Total Equity Raised$82 million
Co-Investors
Founders Fund, Venrock, PayPal, Caffeinated Capital, Obvious Ventures, and more

Open Doors Partners unlocks access to private markets. Curated opportunities
across startups, funds, and alternative assets—built for accredited investors.

Portfolio Highlights

A look at companies and funds we've backed through our SPV model.

See what our investors have to say

Sample Series Lifecycle

A typical Series SPV goes through the following process:

01

Sourcing and Diligence

Opportunities are sourced through trusted networks and rigorously vetted against our investment criteria.

02

SPV Formation

A new Series entity is created with independent reporting, legal separation, and full compliance.

03

Capital Call & Close

Investors fund the Series, and capital is deployed to the selected investment opportunity.

04

Monitoring & Communication

We share regular updates, capital notices, and annual tax documents (K-1s) with participating LPs.

05

Exit & Distribution

After an exit, proceeds are distributed and final tax documentation is sent to investors.

Insights from the Team

Occasionally, we share perspectives on navigating private markets, emerging asset classes, and capital structuring.

The Case for Deal-by-Deal Investing

What the Rise of Secondaries Means for LPs

How SPVs Are Reshaping Venture Access

Invite a Fellow Investor

Know someone who could benefit from Open Doors?

We welcome thoughtful introductions to fellow accredited investors.