# Jack Xu

> Jack Xu is a angel investor at Seven Seas Partners (Menlo Park) backing Software and Analytics. See 5 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Seven Seas Partners](https://shizune.co/investors/profile/seven-seas-venture-partners)
- Location: Menlo Park, United States
- Total investments: 5
- Last investment: Nov 2021
- Lead investor: 20%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/jack-xu-b72017a0

Jack Xu is a angel investor at Seven Seas Partners in Menlo Park focused on Software and Analytics. Jack is a pioneer in the Internet industry. As a Managing Partner of Seven Seas Venture Capital, Jack brought with him extensive experience and know-how in running start-ups and global companies to help entrepreneurs accelerate the growth of their business. Jack has served as the President and Chief Technology Officer of SINA Corporation, orSINA, a Nasdaq-listed company, from February 2013 to February 2015. He was responsible for Weibo, the most influential social network in China.Prior to joining SINA, Jack worked at Cisco as the Corporate Vice President of the Communications and Collaboration business unit. Previously, Jack served as Vice President of Engineering and Research at eBay from October 2002 to April 2008 and Chief Technology Officer at NetEase from May 2000 to July 2002. Jack led Excite's search engine development in 1996, while pursuing a Ph.D. at the University of California in Berkeley. He received a Bachelor's degree and a Master's degree in Information Management from Sun Yat-Sen University. Jack is actively involved in entrepreneur organizations, he served as the Vice Chairman of HYSTA from 2007 to 2008.Jack Xu has served as Tuniu's board member since the listing of the Company in 2014.

## Round sizes

| Stage | Round size |
| --- | --- |
| Series B | $7M–$8.5M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 2 | 40% |
| Analytics | 1 | 20% |
| Logistics | 1 | 20% |
| E-Commerce | 1 | 20% |
| Advertising | 1 | 20% |

9 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Angel | 1 | 20% |
| Series A | 1 | 20% |
| Series B | 1 | 20% |
| Series C | 1 | 20% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| China | 2 | 40% |
| United States | 1 | 20% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Alluxio | Alluxio, Inc. (formerly Tachyon Nexus) team consists of the creators and top committers of Alluxio (formerly Tachyon), an open source project from UC Berkeley AMPLab. For the past three years, we have been working to revolutionize the way data is stored, accessed, and managed by focusing on a memory-centric architecture. We believe this newapproach is key to delivering the next generation storage. | $50M | Series C | Nov 16, 2021 |  |
| Alluxio | Alluxio, Inc. (formerly Tachyon Nexus) team consists of the creators and top committers of Alluxio (formerly Tachyon), an open source project from UC Berkeley AMPLab. For the past three years, we have been working to revolutionize the way data is stored, accessed, and managed by focusing on a memory-centric architecture. We believe this newapproach is key to delivering the next generation storage. | $7M | Series B | Apr 16, 2020 |  |
| Alluxio | Alluxio, Inc. (formerly Tachyon Nexus) team consists of the creators and top committers of Alluxio (formerly Tachyon), an open source project from UC Berkeley AMPLab. For the past three years, we have been working to revolutionize the way data is stored, accessed, and managed by focusing on a memory-centric architecture. We believe this newapproach is key to delivering the next generation storage. | $8.5M | Series B | Jan 18, 2019 |  |
| Guangzhou CK1 | Guangzhou CK1 (出口易) provides M2C supply and marketing platform and logistics solutions for transnational business. It is focused on providing customers with the whole logistic services of small package, special line, expressage, overseas warehousing, order management, goods source distribution, and pre-sales and after-sales service.GuangzhouCK1 has built five overseas warehouses in Britain, America, Australia, Germany, and Hong Kong, and 7 processing centers have been set up in 7 domestic cities such as Guangzhou, Shenzhen, and Shanghai. | $100K | Angel | Dec 01, 2008 |  |
| AdChina | AdChina operates the leading technology-driven integrated internet advertising platform in China. The platform comprises software and related services that effectively integrates advertisers with publishers and delivers advertisements across different ads formats and different internet access devices. The core component of the platform, the AdChinaAdManager system, tracks available advertising space from publishers, processes orders from advertisers, analyzes audience data and matches advertisements to their target audience almost instantaneously across the entire range of AdChina’s publisher base. AdChina extended the reach of AdManager system by providing AdChina Demand Platform (ADP), a demand-side platform for advertising agencies and advertisers and AdChina Supply Platform (ASP), a supply-side platform for publishers that operate in online or mobile channels. AdChina’s platform has access to over 30 billion[1] page views and reaches over 486 million[2] online unique visitors and 249 million[3] mobile internet users per month. AdChina was founded in April 2007 in Silicon Valley, USA.[1] AdChina platform data, Dec. 2011, including the traffic that ASP has access to[2] Third-party data, Dec. 2011[3] AdChina platform data, Dec. 2011 | $10M | Series A | Jun 12, 2008 |  |

5 of 5 investments shown.

## Co-investors
- [Andreessen Horowitz](https://shizune.co/investors/profile/andreessen-horowitz) — VC Fund, 3 deals together
- [Volcanics Venture](https://shizune.co/investors/profile/volcanics-venture) — VC Fund, 2 deals together
- [GSR Ventures](https://shizune.co/investors/profile/gsr-ventures-management) — VC Fund, 1 deal together
- [Hillhouse Investment](https://shizune.co/investors/profile/hillhouse-investment) — VC Fund, 1 deal together

## About Seven Seas Partners

VC Fund · Menlo Park, United States

Seven Seas Venture Partners was founded by Jeff Xiong in February 2015.

3 contacts available at Seven Seas Partners.

| Name | Title | Profile |
| --- | --- | --- |
| Ivy Li | Partner | https://shizune.co/investors/profile/ivy-li-2 |
| Jack Xu | Founding Managing Partner | https://shizune.co/investors/profile/jack-xu |
| Jeff Xiong | Founder/Managing Partner | https://shizune.co/investors/profile/jeff-xiong |

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## FAQ

### What does Jack Xu invest in?

Jack Xu invests primarily in Software, Analytics and Logistics startups, most often at Angel and Series A stage. Most of the 5 investments tracked by Shizune back companies in China. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Jack Xu's check size?

Jack Xu typically joins rounds of $7M–$8.5M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Jack Xu participates in.

### When did Jack Xu last invest?

The most recent investment recorded for Jack Xu closed in Nov 2021. Shizune tracks 5 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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