David Aronoff
Chairman and Managing Partner at MCJ
Boston, Massachusetts
David Aronoff, Chairman and Managing Partner at MCJ is an active investor based in Boston, Massachusetts. This profile covers what David Aronoff backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPEInvestor
- Stages
- Early Stage VenturePre SeedSeed
- Invests in
- Climate & EnergySpace & AerospaceQuantum & SemiconductorsHardware & Deep TechSaaS & Enterprise
- Location
- Boston, Massachusetts
- Typical check
- $250K
- Past investments
- 35
Notable investments
T2 BiosystemsMinimSand 9Immedia
Vidsys
JouleXAllayer
BetterCloud
ApiaryHow to reach David Aronoff
Angels and operators like David Aronoff 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.
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Round Funded. "David Aronoff." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/david-aronoff
Frequently Asked Questions
What does David Aronoff invest in?
David Aronoff invests in Climate & Energy, Space & Aerospace, Quantum & Semiconductors and Hardware & Deep Tech, typically at Early Stage Venture, Pre Seed and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does David Aronoff invest at?
David Aronoff typically invests at Early Stage Venture, Pre Seed and Seed. Lead with traction that fits the stage when you reach out.
What is David Aronoff's typical check size?
David Aronoff typically writes checks around $250K. 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.