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Forum discussions

minimalist phone: reduce your screentime

Y Combinator offers 7 startups ideas they want to fund (Spring 2026)

As usual, Y Combinator came up with segments that are worth investing:

1. Cursor for Product Managers
2. AI-Native Hedge Funds
3. AI-Native Agencies
4. Stablecoin Financial Services
5. AI for Government
6. Modern Metal Mills
7. AI Guidance for Physical Work 8. Large Spatial Models 9. Infra for Government Fraud Hunters 10. Make LLMs Easy to Train

94 comments•5.2K views

4mo ago

minimalist phone: reduce your screentime

Which companies would you invest in if they were freely tradable?

Some companies are love brands for me, and I d like to support them. Others I see growing, and I d love to ride the wave. :D

Do you have any companies you d like to invest in, but that don t have a public offering yet? Which ones?

25 comments•222 views

9mo ago

minimalist phone: reduce your screentime

YCombinator highlighted 8 standout startups they chase (List Winter 2026 Demo day)

At YC, investors outlined 8 startups across space, AI, gaming, and agriculture (most of them want to bet on futuristic ideas, e.g. space), and these sparked interest in funding them.

This was the pick:

Beyond Reach Labs satellite solar arrays that expand from table-size to football-field size in orbit
Est. valuation: ~$100M+
Byteport next-gen file transfer protocol
Est. valuation: ~ $30M
Hex Security AI agents that continuously hack your system to find vulnerabilities (Rev.: $1M+ run-rate in 8 weeks)
Est. valuation: ~$100M+
Grazemate autonomous drones that herd cattle, track weight, and monitor land
Est. valuation: ~ $30M
GRU Space moon factory turning lunar soil into buildings (starting with a moon hotel)
Est. valuation: ~$100M+
Luel marketplace for real-world human data (video/audio) to train AI models (Rev.: ~$2M ARR in 6 weeks)
Est. valuation: ~$100M+
Pax Historia AI strategy game where players rewrite history (e.g. Rome never falls) 35K daily users
Est. valuation: ~ $30M
Stilta AI agent for patent lawyers (search + analyse IP faster, cheaper)
Est. valuation: ~ $30M

21 comments•1.1K views

3mo ago

16 years old, launching a fintech product in 6 days

Hey Product Hunt. I'm Matthew, founder of Protonyx LLC.

I'm a junior in high school in St. Louis, and I've spent the last year building Vector, a portfolio analytics desktop app for self-directed retail investors.

5 comments•46 views

19d ago

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