# Captain Nemo

> Captain Nemo is a seed investor backing Blockchain, Financial Services and Software Engineering. See 2 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Total investments: 2
- Last investment: Aug 2024
- Lead investor: 0%
- Last updated: Aug 2026

Captain Nemo is a seed investor focused on Blockchain and Financial Services. Captain Nemo

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $2.1M–$5M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Blockchain | 2 | 100% |
| Financial Services | 1 | 50% |
| Software Engineering | 1 | 50% |
| Decentralized Finance (DeFi) | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Rhinestone | Rhinestone is building a platform to enable a secure ecosystem of smart account modules and, with it, permissionless wallet innovation. | $5M | Seed | Aug 14, 2024 |  |
| Altitude | Altitude is a Decentralized Finance (DeFi) protocol offering a first-of-its-kind actively managed collateralized loan, which uses the volatility of the value of the collateral to repay itself over time. | $2.1M | Seed | Jul 01, 2022 |  |

2 of 2 investments shown.

## Co-investors
- [1kx](https://shizune.co/investors/profile/1kx) — VC Fund, 1 deal together
- [Alchemy](https://shizune.co/investors/profile/alchemy-insights) — VC Fund, 1 deal together
- [Circle](https://shizune.co/investors/profile/circle-2) — VC Fund, 1 deal together
- [CoinFund](https://shizune.co/investors/profile/coinfund) — VC Fund, 1 deal together
- [Cyber](https://shizune.co/investors/profile/cyber-b141) — VC Fund, 1 deal together
- [Daedalus Angel Syndicate](https://shizune.co/investors/profile/daedalus-angel-syndicate) — VC Fund, 1 deal together

## Similar investors

### Similar industry
- [Coinbase Ventures](https://shizune.co/investors/profile/coinbase-ventures) — VC Fund
- [Animoca Brands](https://shizune.co/investors/profile/animoca-brands-corporation) — VC Fund
- [Shima Capital](https://shizune.co/investors/profile/shima-capital) — VC Fund

### Similar stage
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### Similar country
- [Eden Block](https://shizune.co/investors/profile/eden-block) — VC Fund
- [Wave Digital Assets](https://shizune.co/investors/profile/wave-digital-assets) — VC Fund
- [Greenfield](https://shizune.co/investors/profile/greenfield-one) — VC Fund

## Featured in investor lists
- [Financial Services Angel Investors in Gibraltar](https://shizune.co/investors/financial-services-angel-investors-gibraltar)
- [Blockchain Angel Investors in Gibraltar](https://shizune.co/investors/blockchain-angel-investors-gibraltar)
- [FinTech Angel Investors in Gibraltar](https://shizune.co/investors/fintech-angel-investors-gibraltar)
- [All Angel Investors in Gibraltar](https://shizune.co/investors/angel-investors-gibraltar)

## FAQ

### What does Captain Nemo invest in?

Captain Nemo invests primarily in Blockchain, Financial Services and Software Engineering startups, most often at Seed stage. Most of the 2 investments tracked by Shizune back companies in Gibraltar. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Captain Nemo's check size?

Captain Nemo typically joins rounds of $2.1M–$5M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Captain Nemo participates in.

### When did Captain Nemo last invest?

The most recent investment recorded for Captain Nemo closed in Aug 2024. Shizune tracks 2 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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