Our Portfolio

A snapshot of companies and funds we’ve backed through our investment vehicles.

Lambda

Lambda

Lambda provides superintelligence cloud infrastructure, offering high‑performance GPU clusters, AI workstations, and on‑demand compute services.
Perplexity

Perplexity

Perplexity is an AI “answer engine” combining real‑time web search with large language models to provide concise, cited responses to user queries.
Pair Eyewear

Pair Eyewear

Pair Eyewear offers customizable glasses with interchangeable top frames—letting users switch styles without changing their prescription lens setup.
Crusoe

Crusoe

Crusoe builds energy-first AI infrastructure, converting wasted energy into power for modular data centres optimized for GPU compute.
Replit

Replit

Replit is a browser-based development environment powered by AI, enabling users to write, collaborate on, and deploy applications seamlessly.
Boom

Boom

Designing a next‑generation 55‑passenger supersonic airliner, backed by top venture capital and aviation partners.      
OpenAI

OpenAI

Pioneers of GPT-series models and research in general AI systems, OpenAI enables businesses and individuals to interact more intelligently with technology.
Arcline

Arcline

Arcline is a private equity firm managing $4.3B in capital, investing across defense, aerospace, life sciences, and critical infrastructure.
Cerebras

Cerebras

Cerebras designs ultra-large AI accelerators and hardware systems that accelerate deep learning workloads at scale.
Virta

Virta

Virta is helping patients reverse type 2 diabetes through personalized nutrition, real-time clinical data, and digital tools—developed by leading doctors and innovators.
xAI

xAI

Launched by Elon Musk, xAI focuses on frontier AI research to explore the foundations of intelligence through curiosity-driven models.
Santa Monica PIER

Santa Monica PIER

Santa Monica Pier is a mixed business model blending real estate, F&B, and experiences at the iconic oceanfront landmark.
Aven

Aven

Aven combines credit cards with home equity—offering homeowners credit limits up to $400K, guaranteed low rates, and 2% unlimited cash back.
Disclosure:
Logos and investor names are shown for illustrative purposes only and do not
imply performance, endorsement, or a solicitation to invest.

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Our Investor Network

We work with a small group of accredited investors looking for transparency, flexibility, and long-term alignment in private markets.

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Open Doors Partners LLC does not publicly offer or solicit investment opportunities. All investments are made through private placements under Rule 506(b) of Regulation D. Accredited investors only. Past performance is not indicative of future results.

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