# Christine Tsai

> Christine Tsai is a seed investor at 500 Global backing Software and Enterprise Software. See 29 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [500 Global](https://shizune.co/investors/profile/500-startups)
- Location: San Francisco, United States
- Total investments: 29
- Last investment: Feb 2026
- Lead investor: 10%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/christinesltsai
- X (Twitter): http://twitter.com/christine_tsai
- Website: http://christinetsai.co/
- Facebook: http://www.facebook.com/christinesltsai

Christine Tsai is a seed investor at 500 Global in San Francisco focused on Software and Enterprise Software. Christine is the CEO and Founding Partner of 500 Global (formerly 500 Startups). Before founding 500 Global, she held product marketing and operating roles at Google. Christine holds a B.A. in Cognitive Science from the University of California at Berkeley.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $50k–$4.5M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 8 | 28% |
| Enterprise Software | 6 | 21% |
| SaaS | 5 | 17% |
| Mobile | 5 | 17% |
| FinTech | 5 | 17% |

73 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 22 | 76% |
| Angel | 1 | 3% |
| Pre-Seed | 1 | 3% |
| Series B | 1 | 3% |
| Funding Round | 1 | 3% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 18 | 62% |
| India | 1 | 3% |
| Japan | 1 | 3% |
| Spain | 1 | 3% |
| Thailand | 1 | 3% |

7 countries tracked in total.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Quill Meetings | Quill Meetings develops Quilliam, an on-device AI platform that coordinates staff work and captures meeting intelligence for professionals. The software records and transcribes conversations locally, generates structured notes, minutes, and action items, and supports multilingual summaries. It integrates with tools such as CRM systems, projectboards, email, and collaboration platforms to update records and trigger follow-ups. The platform targets investors, founders, sales teams, recruiters, coaches, and other knowledge workers who handle frequent meetings. | $6.5M | Seed | Feb 25, 2026 |  |
| Stethy | A powerful AI automation and analytics platform that enables Life Science and Healthcare companies to automate their workflows to drive operational efficiency and to close the gaps between data, insights, and action. |  | Seed | Oct 06, 2022 |  |
| TartanHQ | TartanHQ is an infrastructure platform that helps enterprises integrate customer data across applications, resolve identity, and automate operational workflows using system-level intelligence. It connects data across fragmented enterprise systems and enables AI-powered workflows through three core products: HyperSync - Integrates 100+ HRIS, ERP,CRM platforms to unify & standardize siloed & fragmented enterprise data in real-time without custom connectors HyperApps - AI-driven workflows for compliance, onboarding, and process automation deployed without heavy engineering HyperVerify - Consent-driven Real-time verification of identity, employment, address, income, and business credentials to streamline onboarding, scale decisioning and reduce fraud | $4.5M | Seed | Aug 01, 2022 |  |
| Stack | Stack is a smart browser for internet multitaskers that manages all apps from one place. It increases the efficiency of working with the web for the average internet users by allowing simultaneous use of multiple web-apps within a neatly organized working environment. It is designed to make multitasking in web reality and work with the internetfun.Stack was founded in 2019 and is headquartered in Amsterdam, The Netherlands. | $850K | Seed | Dec 14, 2020 |  |
| Abound | Abound is a modern API solution that streamlines the collection of W-9 forms, verifies TINs, and manages 1099 filings for compliance. It reduces errors through real-time verification and allows businesses to maintain control over user data while automating processes. | $650K | Pre-Seed | Sep 16, 2019 |  |
| ProSky | ProSky is an HR SaaS platform that gives companies a full-stack solution to hiring and organization talent development. Companies can innovatively evaluate candidates for hire and develop employees through succession pathways, so they can recruit, hire, retain, train and grow the best diverse talent & culture fit. | $2.4M | Seed | Sep 15, 2016 |  |
| RealtyShares | RealtyShares is a real estate investment platform that gives investors direct access to quality commercial real estate investment opportunities. It connects its network of individual and institutional investors with experienced real estate operators looking to raise capital to improve properties for higher, better use. Venture-backed by premierinvestors such as 500 Startups, Union Square Ventures, General Catalyst, Cross Creek Advisors, and Menlo Ventures, RealtyShares has deployed more than $840 million over 1,100 investment opportunities in 41 states. | $20M | Series B | Feb 24, 2016 |  |
| Alphaus | A Tokyo- & KL-based SaaS provider offering a cloud-finance management platform. | $125K | Seed | Feb 04, 2016 |  |
| Barn & Willow | Barn & Willow is a vertically integrated home decor brand making custom-made window coverings effortless and accessible. | $125K | Seed | Oct 10, 2015 |  |
| Barn & Willow | Barn & Willow is a vertically integrated home decor brand making custom-made window coverings effortless and accessible. | $125K | Seed | Oct 10, 2015 |  |

10 of 29 investments shown.

## Co-investors
- [500 Global](https://shizune.co/investors/profile/500-startups) — VC Fund, 6 deals together
- [MicroVentures](https://shizune.co/investors/profile/microventure-marketplace) — VC Fund, 2 deals together
- [Oakhouse Partners](https://shizune.co/investors/profile/oakhousepartners) — VC Fund, 2 deals together
- [Peak](https://shizune.co/investors/profile/peak-capital) — VC Fund, 2 deals together
- [500 Fintech](https://shizune.co/investors/profile/500-fintech) — VC Fund, 1 deal together
- [100Unicorns](https://shizune.co/investors/profile/9unicorns) — VC Fund, 1 deal together

## About 500 Global

VC Fund · San Francisco, United States

500 Global offers an accelerator program designed to provide mentorship and resources to startup founders. It facilitates educational programs for investors and operates networking platforms to connect entrepreneurs with mentors and operators. The firm's activities include managing investment strategies focused on diverse geographic regionsand sectors. Through its infrastructure, the company supports the development of innovation ecosystems by providing access to capital and industry expertise.

5 contacts available at 500 Global.

| Name | Title | Profile |
| --- | --- | --- |
| Agahuseyn Ahmadov | Program Coordinator | https://shizune.co/investors/profile/agahuseyn-ahmadov |
| Arın Ozkula | General Partner | https://shizune.co/investors/profile/ar%C4%B1n-%C3%B6zkula |
| Cecilia Ezquerro | Associate | https://shizune.co/investors/profile/cecilia-ezquerro |
| Clayton Bryan | Partner | https://shizune.co/investors/profile/clayton-bryan |
| Didier Quiroz Ceballos | Partner | https://shizune.co/investors/profile/didier-quiroz-ceballos |

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## FAQ

### What does Christine Tsai invest in?

Christine Tsai invests primarily in Software, Enterprise Software and SaaS startups, most often at Seed and Angel stage. Most of the 29 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Christine Tsai's check size?

Christine Tsai typically joins rounds of $50k–$4.5M 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 Christine Tsai participates in.

### When did Christine Tsai last invest?

The most recent investment recorded for Christine Tsai closed in Feb 2026. Shizune tracks 29 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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