Entry stagePre-seed, Seed, Series A, Series B
Check size$100K to $30M
Leads roundsMostly follows
FocusGeneralist
Latest fundn/a
Investing team4 peopleNo activity since Sep
Who you would pitch at Positive Sum
4 people on the investing team, 3 of them partners who can make the call. Partners are listed first.
Patrick O’ShaughnessyFounder & CEOHe manages a portfolio of various technology companies.
Alison Davis RiddellPartner
Jeremy SternPartner
Gabi MarquesAnalyst
Work here and something is wrong? Ask for a correction.
Writes $100K to $30M checks. Its smallest check is larger than 5% of firms in the atlas.
Bars: how many firms in the atlas report each band. Highlighted: this firm.No recent activity since September 2026. Quiet does not mean closed.
Weekly count of activity updates. Activity is not a confirmed deal.Before you pitch
How to reach them[email protected]
In their words
Home - Positive SumWe back founders pursuing their life’s work.positivesum.com
Send Mode VC your deck
Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
Send your deckAlert me when Positive Sum is active
One email when this firm shows new activity. Nothing else.
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Questions
What stage does Positive Sum invest in?
Positive Sum reports entry at pre-seed, seed, series a, series b.
How much does Positive Sum invest?
Positive Sum reports checks of $100K to $30M.
Does Positive Sum lead rounds?
Positive Sum mostly follows other investors.
Who are the partners at Positive Sum?
Patrick O’Shaughnessy (Founder & CEO), Alison Davis Riddell (Partner), Jeremy Stern (Partner).
Is Positive Sum active right now?
No recent activity since September 2026.
Work at Positive Sum? Claim or correct this profile.