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Filament Capital Management
Kyle Weaver runs Filament Capital Management, a New York venture firm using public research to source concentrated Seed and Series A software investments.
Filament Capital Management
Filament Capital Management was formed in 2018 by Kyle Weaver and Brett Berson. Weaver had invested at FirstMark Capital and spent time at Insight Partners, while Berson built his early investing career at First Round Capital — giving Filament an institutional foundation that bridges the early-stage Seed and Series A markets with the operational mindset of growth-stage underwriting (per the firm's official communications). The firm invests primarily at the Seed and Series A stages, targeting enterprise software, AI/ML, fintech, and digital health companies across North America. Filament takes concentrated positions in a small number of companies per fund, conducting multi-month research deep-dives before writing a check — a pacing model closer to a thesis-driven public equity fund than a typical venture firm. Known portfolio companies include automation platform Hyperscience and AI-native observability startup Arize AI, with co-investors including FirstMark and Battery Ventures (per the firm and Crunchbase records). Filament operates from a single office in New York and runs a deliberately lean team, keeping fund sizes moderate to avoid drift into multi-stage territory. The firm has not disclosed its total assets under management or aggregate deployment to date. In 2023, it was actively leading or participating in Seed rounds alongside established firms like FirstMark and Felicis, a pattern that signals a syndication-first rather than lead-at-all-costs posture. The firm's structural thesis is its research cycle: Filament publishes in-depth public memos on sectors and companies long before it invests, using those reports to build founder relationships and establish intellectual credibility. This written-thought-leadership model — unusual among sub-$500M venture funds — creates a passive outbound sourcing funnel that functions as a moat in competitive Seed rounds where generalist spray-and-pray capital dominates.
General information
Firm type
Asset Manager
Year founded
2018
AUM
Undisclosed
Location
Region
North America
Country
United States
City
New York
Corporate office
New York, NY, United States
Principals
Kyle Weaver
Chief Investment Officer, Managing Partner
Brett Berson
Partner
Sector focus
Frequently asked questions
Who makes investment decisions at Filament Capital Management?
Kyle Weaver, the firm's Chief Investment Officer and Managing Partner, jointly drives investment decisions with Partner Brett Berson. Weaver's background spans FirstMark Capital and Insight Partners, giving the firm both early-stage startup judgment and late-stage underwriting discipline, while Berson joined from First Round Capital with extensive Seed-stage experience.
How does Filament source its deals?
Filament uses a research-driven sourcing model that is atypical for a venture firm of its size. The firm publishes lengthy, publicly available investment memos and sector analyses — for example, deep dives into robotic process automation or AI observability — well before taking meetings or writing checks. Founders and other VCs read those memos, which generates inbound deal flow and positions Filament as a domain expert rather than a reactive check-writer.
Does Filament lead rounds or primarily co-invest?
Filament operates with a syndication-first posture, frequently co-investing alongside firms like FirstMark, Felicis, and Battery Ventures in Seed and Series A rounds. It will lead or co-lead selectively, but its concentrated portfolio model means it prefers to partner with other established funds rather than pricing and structuring deals solo.
What check size does Filament typically write?
Filament has not disclosed a standardized check-size range, but given its Seed-to-Series-A focus and concentrated portfolio construction, typical initial checks likely fall in the $1 million to $3 million range, with reserves for follow-on pro-rata investments in breakout companies. As a relatively young 2018-vintage firm, its fund sizes remain moderate in a market where peers raised $100M-plus debut funds in the same period.
How is Filament different from a traditional venture capital firm?
The structural differentiator is the firm's public research program. Filament publishes long-form investment theses and sector landscapes as a core part of its operating model, which functions as both a sourcing magnet and a credibility signal. Most venture funds under $500 million in AUM keep their proprietary research internal; Filament makes it public, creating a durable intellectual brand that compounds over multiple fund cycles.
What sectors does Filament invest in — and avoid?
Filament concentrates on enterprise software, AI and machine learning, fintech, digital health, and applied robotics and automation. The firm generally avoids consumer internet, hardware-heavy deep tech, and life sciences — sectors where its enterprise underwriting framework and research-first sourcing model would not translate into a repeatable edge.
Does Filament have a successor fund or institutional LPs?
Filament has not publicly disclosed its limited partner base or fund sizes. Based on the firm's institutional co-investor network — including FirstMark, Felicis, and Battery Ventures — it likely has access to endowment, foundation, and fund-of-funds LP capital, but the firm's own filings do not confirm this.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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