William Sun

Active Investor

Managing Partner, Fidem Capital Partners at Fidem Capital Partners

London, England

LinkedIn

William Sun, Managing Partner, Fidem Capital Partners at Fidem Capital Partners is an active investor based in London, England. This profile covers what William Sun backs, at which stage, and how founders can reach out in 2026.

William Sun is the Managing Partner and CEO of Fidem Capital Partners, with experience in investment banking, asset management, and angel investing.

William Sun invests in SaaS & Enterprise, Fintech, PropTech & Real Estate and Impact & Social Enterprise, typically at Early Stage Venture.

Location
London, England
Typical check
$500K

What does William Sun invest in?

Investor type
VCAngel
Stages
Early Stage Venture

Where is William Sun based?

William Sun is based in London, England.

Browse more startup investors near William Sun:
Startup investors in LondonStartup investors in the UK

How to reach William Sun

Angels and operators like William Sun reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.

Reach active investors like this one

Get investor contacts

About this profile

This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.

Cite this page

Round Funded. "William Sun." Round Funded investor database, updated September 22, 2026.

Stable URL, it will not change: https://www.roundfunded.com/en/investor/william-sun

Frequently Asked Questions

Who is William Sun?

William Sun, Managing Partner, Fidem Capital Partners at Fidem Capital Partners is an active investor based in London, England. William Sun invests in SaaS & Enterprise, Fintech, PropTech & Real Estate and Impact & Social Enterprise, typically at Early Stage Venture.

What does William Sun invest in?

William Sun invests in SaaS & Enterprise, Fintech, PropTech & Real Estate and Impact & Social Enterprise, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.

What stage does William Sun invest at?

William Sun typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.

What is William Sun's typical check size?

William Sun typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.

Where is William Sun based?

William Sun is based in London, England.

How do founders reach investors like this?

Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.

What is Round Funded?

Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.

Investor lists that match William Sun's profile

Lists of investors with the same location, stage, sector or investor type as William Sun.

Similar investors to William Sun

Investors who share William Sun's portfolio companies, firm, city or investment focus.

Get investor contacts