Dennis O'Neill

Active Investor

Chief Executive Officer at O'Neill Capital Advisors

Chicago, Illinois

LinkedIn

Dennis O'Neill, Chief Executive Officer at O'Neill Capital Advisors is an active investor based in Chicago, Illinois. This profile covers what Dennis O'Neill backs, at which stage, and how founders can reach out in 2026.

Dennis O'Neill is the CEO of O'Neill Capital Advisors and has over three decades of experience in investment banking, blockchain, and IPOs.

Dennis O'Neill invests in Fintech and Crypto & Web3, typically at Early Stage Venture and Late Stage Venture.

Location
Chicago, Illinois
Typical check
$3.8M

What does Dennis O'Neill invest in?

Investor type
VCFamily Office
Stages
Early Stage VentureLate Stage Venture

Where is Dennis O'Neill based?

Dennis O'Neill is based in Chicago, Illinois.

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How to reach Dennis O'Neill

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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. "Dennis O'Neill." Round Funded investor database, updated September 22, 2026.

Stable URL, it will not change: https://www.roundfunded.com/en/investor/dennis-o-neill

Frequently Asked Questions

Who is Dennis O'Neill?

Dennis O'Neill, Chief Executive Officer at O'Neill Capital Advisors is an active investor based in Chicago, Illinois. Dennis O'Neill invests in Fintech and Crypto & Web3, typically at Early Stage Venture and Late Stage Venture.

What does Dennis O'Neill invest in?

Dennis O'Neill invests in Fintech and Crypto & Web3, typically at Early Stage Venture and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.

What stage does Dennis O'Neill invest at?

Dennis O'Neill typically invests at Early Stage Venture and Late Stage Venture. Lead with traction that fits the stage when you reach out.

What is Dennis O'Neill's typical check size?

Dennis O'Neill typically writes checks around $3.8M. Use it as a signal for whether your raise fits their stage.

Where is Dennis O'Neill based?

Dennis O'Neill is based in Chicago, Illinois.

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.

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