10,000 Days Capital Management

Tom Ryder and Megan Ryder serve as the decision-makers for the firm. Tom Ryder brings decades of operating and board experience from companies including Amazon, where he spent 17 years, and American Express. Megan Ryder, his daughter and partner, runs much of the day-to-day investing activity. The structure keeps the investment committee deliberately small and family-run, avoiding the consensus-building friction common to larger venture firms.

The firm's name reflects its core strategy: a 10,000-day horizon, or roughly 27 years. Unlike traditional venture funds with 10-year liquidation schedules, 10,000 Days structures itself to hold positions through extended private-market lifecycles. It targets seed and Series A investments in enterprise software, AI/ML, and fintech, typically writing the first institutional check and reserving multiples of that amount for follow-on rounds.

The firm's precise capital structure is not publicly detailed, but it operates as a registered capital management company rather than a single-family office. Tom Ryder's wealth, generated through his operating career at Amazon and board positions at American Express and other public companies, is likely a significant source of capital, though the firm has not ruled out external limited partners.

Public record shows early and confirmed commitments to Modern Treasury, the Y Combinator-backed payment operations platform, and Anvil, a document-automation startup. The portfolio is concentrated, with the firm making only 4 to 6 new investments annually, each typically receiving a high degree of partner attention, including board seats taken by Tom Ryder himself.

The structural differentiator is its rejection of a fixed fund life. By branding as a capital management company rather than a standard venture partnership, it can hold assets across decades rather than being forced to return capital to limited partners within a typical 10-year window. The father-daughter partnership between Tom and Megan Ryder also creates a built-in succession plan that most venture firms lack.

Tom Ryder's operating career spans a 17-year tenure at Amazon during its formative e-commerce and cloud infrastructure years, followed by board roles at American Express, Spotify, and Affirm. This network — combining enterprise sales, platform infrastructure, and regulated financial services — directly informs the firm's sourcing and diligence in enterprise and fintech software.

Yes, 10,000 Days frequently co-invests alongside larger institutional venture firms. Its participation in Modern Treasury rounds involved co-investors such as Benchmark and Altimeter Capital, while Anvil attracted participation from Gradient Ventures. The firm tends to take pro-rata follow-on rights and occasionally leads or co-leads seed rounds.