DOSSIER · 13F-HR · Q1 2026
Rubicon Founders LLC
Rubicon Founders's asset manager based in Stamford, CT — $138M in tracked AUM across 3 positions as of Q1 2026.
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Rubicon Founders·Stamford, CT·Asset Manager
CIK 0002032489 · last filed Mar 31, 2026
AI Analysis · Q1 2026 · Q1 2026
Portfolio Overview
Rubicon Founders LLC presents a highly concentrated and aggressively expanding portfolio as of the reporting period ended September 30, 2025. The firm’s total assets under management (AUM) surged dramatically by 194.7%, growing from approximately $65.49 million in the previous quarter to $192.97 million. This rapid capital infusion indicates a period of significant growth or deployment of fresh capital. The portfolio is exceptionally non-diversified, comprising only two h...
Quarter at a glance — Q1 2026
Position-change comparison pending.
No quarter-over-quarter changes available.
Top 10 holdings
By portfolio weight as of Q1 2026.
Filing history
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