Investors / United States / QuestMark Partners
QuestMark Partners
Venture capital · Ellicott City, MD, United States · North America
QuestMark Partners is an expansion-stage investment firm that has raised four funds and made over 60 investments. It invests behind management teams building market-leading or market-creating companies and works as a partner to portfolio company management teams and co-investors.
Invests inHealthcare & Biotech
In its own wordssoftwarehealthcarecloudenterprise softwaremedical devicesadvertising
Your fit with QuestMark Partners
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsQuestMark Partners lists 11 checked portfolio companies on its own site. Its largest themes are Healthcare & Biotech (43%), Enterprise Software (14%) and E-commerce & Marketplaces (14%). 83% of its companies are based in United States. It invests most often alongside Harmonic Growth Partners, Western Technology Investment and Activant Capital.
No funding round on record names QuestMark Partners yet, so the figures come from its portfolio page.
Round figures show recent activity, not QuestMark Partners' whole history. Rounds on record name 0 companies; its own site lists 11. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| Healthcare & Biotech | 43% | 15% |
| Enterprise Software | 14% | 8% |
| E-commerce & Marketplaces | 14% | 6% |
| Media & Entertainment | 7% | 4% |
| Consumer | 7% | 3% |
| Cybersecurity | 7% | 4% |
| Education | 7% | 7% |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers764%
- No longer answers00%
- Points to another company436%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 30th | 12 companies |
| Recent activity | 46th | 0 rounds in 12 months |
| Early stage | 54th | 0% of entries at pre-seed or seed |
| Evidence | 52th | 0% of companies confirmed by a round |
| Sector focus | 77th | 43% in its largest sector |
| Reach | 42th | 2 countries |
Co-investor network
who it backs companies with, and who they back togetherAll co-investors or Compare portfolios with Harmonic Growth Partners
Compare QuestMark Partners head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Portfolio
11 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Adara provides data and measurement tools to help brands and destinations boost engagement and drive growth | Enterprise SoftwareE-commerce & Marketplaces | Portfolio page | ||
E-commerce & MarketplacesMedia & Entertainment | Portfolio page | |||
| Portfolio page | ||||
Healthcare & Biotech | Portfolio page | |||
| The company provides clear aligners for teeth straightening | Healthcare & Biotech | Portfolio page | ||
| KeyMe provides locksmith and key copy services, including emergency lockout assistance and key duplication | Consumer | Portfolio page | ||
| Peloton creates exercise equipment and personalized workout plans | Healthcare & Biotech | Portfolio page | ||
| Portfolio page | ||||
| Teladoc Health connects patients and care providers for medical care, mental health, chronic condition management and more. | Healthcare & Biotech | Portfolio page | ||
CybersecurityEnterprise Software | Portfolio page | |||
Healthcare & Biotech | Portfolio page |
About this data
site last read 5 Nov 2026- Site
- questm.com
- Last read
- 5 Nov 2026
- Watching since
- 5 Nov 2026
- Companies checked
- 11
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
Get QuestMark Partners' profile as data
Pull QuestMark Partners' portfolio, co-investors and changes through one API key or MCP, open every portfolio row, compare it with other firms, and get an email when it adds a company or files a fund.
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- Full listsEvery portfolio row and two-firm overlap
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- AlertsFollow 5 investors for portfolio and fund changes
$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/firms/questm.com
# also
GET /v1/firms/questm.com/portfolio
GET /v1/firms/questm.com/coinvestors
GET /v1/firms/questm.com/news