AlphaFlow
Tech-enabled investment in real estate loan acquisition.
Publicly reported investor
Y Combinator
Y Combinator is a publicly reported investor in 42 companies that are also in Sahin Boydas' public portfolio, as of September 2026: AlphaFlow, Apollo Atomics and Array Labs, and 39 more.
This page collects the public evidence behind that overlap. Every company below has its own source-backed directory of publicly reported investors, and Y Combinator appears in each of those directories with a cited public source. The list is evidence-based and may not be complete: it includes only companies in Sahin Boydas' public portfolio where a cited source reports Y Combinator as an investor. It is not a cap table, and it carries no deal terms.
Public profile
Focus: All sectors, AI, SaaS, Fintech, Health, Hardware
Headquarters: San Francisco, CA
Founded: 2005
Companies
42 companies in the public portfolio, listed A–Z with each company's public one-liner, Category, Sub-Category, and current public status. Every card links to the company profile and to the company's full directory of publicly reported investors.
Apollo Atomics
Portfolio company
Array Labs
Providing quality 3D imagery on a global scale
Boost Robotics
Physical agents for digital infrastructure
Buoyant Aero
Air cargo delivery
CellType
Simulates drug response in human biology using LLMs.
Fenrock AI (YC W26)
Builds AI agents to automate financial crime compliance for banks.
Front
Front is an API service provider
Gecko Robotics
Robotic inspection systems for industrial infrastructure
Kabcash
BNPL for Mexico
Kalshi
Regulated prediction market platform for event betting
Magic
24/7 virtual assistant
Marr Labs
Portfolio company
Maverick Biometals
We are automating directed evolution to create cost effective industrial enzymes
MENTEN AI
AI and Quantum-Powered Protein Design
Minerva Intelligence
Instant, flawless AI accountant
Nox Metals
Portfolio company
Odys Aviation
Hybrid electric regional VTOL aircraft
One Robot
Portfolio company
Origami Robotics
Builds high-DOF robotic hands that replicate human dexterity.
Piris Labs
Piris Labs builds optical interconnects for fast, cost-effective AI inference.
Posh Energy
Portfolio company
Pyka
Portfolio company
Reach
Long-range wireless power transfer
Reality Defender
Detect Synthetic Media With AI
Replit, Inc.
Portfolio company
Rove Card
Business credit card with AI-powered expense management
Ryse Market
Turn rental income into instant revenue. Earn 2% commission on every rent advance.
Scale AI
The Data Engine that powers the most advanced AI models
Selfin
Personal finance platform for self-employed professionals
Sendbird
Enterprise-grade AI for reliable, delightful customer service.
Singularity
Provides infrastructure, models, and systems for artificial intelligence.
Spline
A friendly web-based collaborative 3d design tool
Sully.ai
Creating superhuman doctors
Superunit
End-to-end accounting & inventory management for sellers of physical goods
Terranox AI
AI-powered uranium exploration company.
Travo AI (YC W26)
AI-powered real estate data platform for niche commercial assets.
Trestle Biotherapeutics
Bioengineered therapies for Kidney Disease
UpCodes
Helping the construction industry cut through red-tape
Visibl Semi
An applied AI lab automating semiconductor development.
Voxel Energy
Portfolio company
Warp
Payroll and compliance for startups
Categories
Counted across the 42 companies above; a company that carries more than one Category is counted in each. 3 companies carry no Category.
Sources
One reviewed public source per company. Each link opens this site’s source reference, which names the publisher and then links out, so no third-party page is republished here.
- AlphaFlow: Source: PR Newswire (news provided by AlphaFlow)
- Apollo Atomics: Source: PR Newswire
- Array Labs: Source: PR Newswire (Array Labs, Inc.)
- Boost Robotics: Source: Boost Robotics
- Buoyant Aero: Source: Buoyant Aero
- CellType: Source: PR Newswire / Senhwa Biosciences
- Fenrock AI (YC W26): Source: LinkedIn — Charu Sharma
- Front: Source: Front
- Gecko Robotics: Source: Gecko Robotics
- Kabcash: Source: Shan Zhong (Kabcash co-founder/CEO), LinkedIn
- Kalshi: Source: Kalshi News
- Magic: Source: PRLog / Magic
- Marr Labs: Source: Y Combinator
- Maverick Biometals: Source: Maverick Metals
- MENTEN AI: Source: Menten AI
- Minerva Intelligence: Source: Y Combinator
- Nox Metals: Source: NOX METALS
- Odys Aviation: Source: PR Newswire (Odys Aviation)
- One Robot: Source: One Robot
- Origami Robotics: Source: Script Capital
- Piris Labs: Source: Piris Labs
- Posh Energy: Source: PR Newswire / Posh
- Pyka: Source: Pyka
- Reach: Source: Reach Power
- Reality Defender: Source: PR Newswire / Reality Defender
- Replit, Inc.: Source: Replit
- Rove Card: Source: TechCrunch
- Ryse Market: Source: Y Combinator
- Scale AI: Source: Scale
- Selfin: Source: Selfin
- Sendbird: Source: Sendbird
- Singularity: Source: Singularity
- Spline: Source: TechCrunch
- Sully.ai: Source: Phaze Ventures
- Superunit: Source: Y Combinator
- Terranox AI: Source: Terranox AI
- Travo AI (YC W26): Source: Travo
- Trestle Biotherapeutics: Source: Trestle Biotherapeutics
- UpCodes: Source: Building Ventures
- Visibl Semi: Source: Visibl Semiconductors
- Voxel Energy: Source: Taro Fukuyama
- Warp: Source: Warp
Related publicly reported investors
Other investors on this site that are publicly reported in some of the same companies. The number is how many of the 42 companies above also list that investor.
Frequently asked questions
How many companies in Sahin Boydas' public portfolio is Y Combinator publicly reported in?
Y Combinator is a publicly reported investor in 42 companies that are also in Sahin Boydas' public portfolio, as of September 2026: AlphaFlow, Apollo Atomics, Array Labs, Boost Robotics and Buoyant Aero, and 37 more.
Which Categories do the companies with Y Combinator as a publicly reported investor belong to?
The 42 companies span 13 Categories: AI (18), Software (11), Robotics (6), Energy (5), Aerospace (4), Climate (4), Fintech (4), Hardware (4), Biotech (3), Health (2), Other (2), Semiconductors (2) and Space (1). Each Category links to every portfolio company in it.
What does this Y Combinator page not say?
It is not a cap table and not a complete list of Y Combinator's investments. It lists only companies in Sahin Boydas' public portfolio where a cited public source reports Y Combinator as an investor, and it carries no deal terms.