# Nautilus funding: rounds and investors

> Nautilus has raised $500K across 1 round since 2025. Investors include Y Combinator and Rebel Fund. Every round with its source.

Source: https://millionrounds.com/company/nautilus (Millionrounds; every figure on the page links to its filing or article)

United States · [Pre-seed startup](https://millionrounds.com/companies)

# Who invested in *Nautilus*

One round we have observed, with the 2 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

AI Big Data & Analytics

Funding summary Updated 26 Oct 2026

**$500K** raised across 1 round since 2025, from 1 source

- **Latest round:** Pre-seed, $500K Aug 2025
- **Investors:** 2

See who backed them

## The rounds

- **Aug 2025** Pre-seed **$500K** [Y Combinator](https://millionrounds.com/fund/y-combinator) [Rebel Fund](https://millionrounds.com/fund/rebel-fund) Source recorded

## Everyone who backed them

[Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round

[Rebel Fund](https://millionrounds.com/fund/rebel-fund) VC firm **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=nautilus).

## Also claim to have backed them

This firm lists Nautilus as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Maiora Ventures](https://millionrounds.com/fund/maiora-ventures) VC firm Per its own site

## Quick answers about Nautilus

### Who invested in Nautilus?

Nautilus's investors include Y Combinator and Rebel Fund.

### How much has Nautilus raised?

Nautilus has raised $500K across 1 round since 2025.

### When did Nautilus last raise?

Nautilus's most recent round was a Pre-seed of $500K in Aug 2025.

### What was Nautilus's biggest round?

Its most recent round, $500K in Aug 2025, is also its largest on record.

### Who backed Nautilus first?

Nautilus's first round on record, in Aug 2025, was backed by Y Combinator and Rebel Fund.

### What stage is Nautilus at?

Nautilus's latest named round is a Pre-seed, in Aug 2025.

### Where is Nautilus based?

Nautilus is based in the United States.

## Companies like Nautilus

In the same sector, and raised in the last eighteen months.

[**SpaceX** $42B · Oct 2026](https://millionrounds.com/company/spacex)[**xPay** $1.5M · Oct 2026](https://millionrounds.com/company/xpay)[**STRIVE** $1.3B · Oct 2026](https://millionrounds.com/company/strive)[**Albert Invent** $20M · Oct 2026](https://millionrounds.com/company/albert-invent)[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Xona** $512M · Oct 2026](https://millionrounds.com/company/xona)

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