# Limestone Fund

> Limestone Fund is a VC fund in Tallinn backing Medical, Software and Consulting. See 2 investments, check sizes, portfolio. Updated Aug 2026.

- Type: VC Fund
- Location: Tallinn, Estonia
- Total investments: 2
- Last investment: Oct 2011
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/company/1296255
- X (Twitter): http://twitter.com/Northern_tweets
- Website: http://www.limestonefunds.eu/?id=5351

Limestone Fund is a Luxembourg-based investment fund that manages listed securities portfolios and alternative investment products.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Medical | 1 | 50% |
| Software | 1 | 50% |
| Consulting | 1 | 50% |
| Health Care | 1 | 50% |
| Health Diagnostics | 1 | 50% |

6 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 1 | 50% |
| Series B | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Diagnovus | Founded in 2011 and based in Nashville, TN, Diagnovus’s mission is to improve the health of patients and quality of treatment decisions through truly innovative molecular diagnostics by better informing physicians, patients and families that face these difficult disease prospects. Their core principles are defined by a passion to serve anddedication to create evidence-based molecular diagnostic products. By employing these values and principles, they believe they will make a meaningful contribution to improving outcomes for patients, help physicians to provide more effective care and contribute to a more efficient use of health care resources. |  | Seed | Oct 03, 2011 |  |
| ONFocus Healthcare | Originally founded in 1985 as a healthcare strategic planning consulting firm called m21partners, onFocus Healthcare was re-incorporated in 2008 as a business execution software solutions company. Today, onFocus is the leading provider of enterprise performance management (EPM) software and support services for the healthcare marketplace. Theirproduct, onFocus epm™, ensures that patients get better, faster, and less expensive care by helping hospitals continuously execute and perform at higher levels.They are dedicated to the success of healthcare organizations and the executives, managers and employees who lead them. Through the use of their software products and advisory services, they strive to improve the execution success and performance of every provider they work with by at least 20%. | $3M | Series B | Apr 14, 2010 |  |

2 of 2 investments shown.

## Co-investors
- [Mountain Group Capital](https://shizune.co/investors/profile/mountain-group-capital) — VC Fund, 2 deals together
- TriStar Health Partners — VC Fund, 2 deals together
- [Clayton Associates](https://shizune.co/investors/profile/clayton-associates) — VC Fund, 1 deal together
- [FCA Venture Partners](https://shizune.co/investors/profile/fca-venture-partners) — VC Fund, 1 deal together
- [Heritage Group](https://shizune.co/investors/profile/heritage-group) — VC Fund, 1 deal together
- [Kestrel Capital](https://shizune.co/investors/profile/kestrel-capital) — VC Fund, 1 deal together

## 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 Limestone Fund invest in?

Limestone Fund invests primarily in Medical, Software and Consulting startups, most often at Seed and Series B stage. Most of the 2 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Limestone Fund last invest?

The most recent investment recorded for Limestone Fund closed in Oct 2011. 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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