# Mark Rosenblatt

> Mark Rosenblatt is a seed investor at Rationalwave Capital Partners backing Software. See 2 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Rationalwave Capital Partners](https://shizune.co/investors/profile/rationalwave-capital-partners)
- Total investments: 2
- Last investment: Jul 2019
- Lead investor: 50%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/markrosenblatt/

Mark Rosenblatt is a seed investor at Rationalwave Capital Partners focused on Software and Biometrics. Mark Rosenblatt is the Founder and CEO of Rationalwave Capital Partners. He attended Yale School of Management.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 1 | 50% |
| Biometrics | 1 | 50% |
| Health Care | 1 | 50% |
| Life Science | 1 | 50% |
| Biotechnology | 1 | 50% |

13 industries tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Israel | 1 | 50% |
| United States | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| BactoByte LTD | BactoByte aims to empower caregivers with one-hour bacterial diagnostics and antibiotic screening capability to improve outcomes, reduce mis-diagnostics, and lower health care costs.Based on a proprietary novel basic method, BactoByte’s assay delivers precise and cost-effective identification and direct antibiotics susceptibility testing with80-90% improvement of standard turnaround time.Time reduction, sensitivity, and specificity results in decreased mortality rates, fewer hospital days, and avoidance of associated costs of $1K-50K per patient.BactoByte has technology validation and partnerships with leading medical centers. |  | Seed | Jul 01, 2019 |  |
| TypingDNA | TypingDNA provides typing biometrics authentication as a service, enabling companies to recognize people by the way they type. The company's authentication technology compares how people type on their keyboards against previous recordings. Works on both mobiles and PCs. Headquartered in New York, United States, with offices in Romania, EU. | $1.5M | Seed | Jan 31, 2019 |  |

2 of 2 investments shown.

## Co-investors
- [GapMinder VC](https://shizune.co/investors/profile/gapminder-vc) — VC Fund, 1 deal together
- [Gecad Ventures](https://shizune.co/investors/profile/gecadgroup) — VC Fund, 1 deal together
- [Techstars](https://shizune.co/investors/profile/techstars) — VC Fund, 1 deal together

## About Rationalwave Capital Partners

VC Fund · Scarsdale, United States

Rationalwave Capital Partners is a venture capital firm investing in technology companies both public and private. The firm is located in New York and founded by Mark Rosenblatt in 2003.

1 contacts available at Rationalwave Capital Partners.

| Name | Title | Profile |
| --- | --- | --- |
| Mark Rosenblatt | Founder and CEO | https://shizune.co/investors/profile/mark-rosenblatt |

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

## FAQ

### What does Mark Rosenblatt invest in?

Mark Rosenblatt invests primarily in Software, Biometrics and Health Care startups, most often at Seed stage. Most of the 2 investments tracked by Shizune back companies in Israel. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Mark Rosenblatt last invest?

The most recent investment recorded for Mark Rosenblatt closed in Jul 2019. 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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