Alison Davis Riddell is a member of the team at Positive Sum.
What Alison can write
Writes checks of$100K to $30M
Comes in atPre-seed, Seed, Series A, Series BMostly follows a lead
Email the firm[email protected]The firm's own inbox for founders.
Positive Sum writes $100K to $30M checks, larger than 5% of firms in the atlas.
Bars: how many firms report each check band. Highlighted: Positive Sum.Also at Positive Sum
Partners like Alison
At firms with a similar stage, sector and check size.
Alert me when Positive Sum is active
One email when Alison's firm raises a fund, adds a partner or shows new activity.
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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
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Who is Alison Davis Riddell?
Alison Davis Riddell is a member of the team at Positive Sum.
How much does Alison Davis Riddell invest?
Alison Davis Riddell invests through Positive Sum, which writes checks of $100K to $30M at pre-seed, seed, series a, series b.
How do I pitch Alison Davis Riddell?
Email [email protected], the firm's inbox for founders, and name Alison in the subject. A warm intro from a founder Positive Sum backed works better.
Last updated 2026-10-15. Is this you? Ask for a correction.