Phosphor Capital is a venture capital firm that exclusively invests in early-stage startups emerging from the Y Combinator accelerator program. Their strategy involves providing capital, typically ranging from $100,000 to $500,000, to the top founders in each YC batch, with a particular focus on high-growth sectors such as AI.
50% of their portfolio is in Infrastructure & Cloud. They made 4 investments in the last 12 months. Their most common stage is seed (75% of deals). Average disclosed round size is $30.5M (across 4 rounds with reported amounts).
Portfolio
4
Fund Size
$34M
Top Stage
Seed
Last 12 Mo
4
Portfolio Breakdown
Stage Distribution
Sector Distribution
Portfolio
4 investments
Top Co-Investors
Y Combinator4 shared
General Catalyst2 shared
Kindred Ventures1 shared
SV Angel1 shared
Contrary1 shared
Glade Brook Capital Partners1 shared
Alumni Ventures Group1 shared
Quadri Ventures1 shared
Transpose Platform1 shared
Twenty Two Ventures1 shared
BoxGroup1 shared
Long Journey Ventures1 shared
Instacart1 shared
Last updated: 16 April 2026