Jim Wiandt
Industry Partner at Stack Asset Management
New York City, New York
Jim Wiandt, Industry Partner at Stack Asset Management is an active investor based in New York City, New York. This profile covers what Jim Wiandt backs, at which stage, and how founders can reach out in 2026.
Mr. Jim Wiandt is an Angel Investor. He co-founded ETF.com. He co-founded the company in 2001, creating the central hub for information and analysis on indexes, index funds and ETFs. He then acquired "Indexes: The Journal of Index Issues" from Dow Jones. In 2003, he purchased the Exchange-Traded Funds Report.
- Investor type
- AngelVCPEFounder
- Stages
- Early Stage VentureLate Stage Venture
- Invests in
- Fintech
- Location
- New York City, New York
- Typical check
- $3.8M
- Past investments
- 2
Notable investments
How to reach Jim Wiandt
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Round Funded. "Jim Wiandt." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/jim-wiandt
Frequently Asked Questions
What does Jim Wiandt invest in?
Jim Wiandt invests in Fintech, typically at Early Stage Venture and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Jim Wiandt invest at?
Jim Wiandt typically invests at Early Stage Venture and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Jim Wiandt's typical check size?
Jim Wiandt typically writes checks around $3.8M. Use it as a signal for whether your raise fits their stage.
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.