11 1/2 Holdings

11 1/2 Holdings

11 1/2 Holdings was established in 2019 by Eduardo Medeiros as a single-family office based in Newtown, Pennsylvania. The office consolidates the financial affairs of its principals under one integrated structure, combining investment operations with tax structuring, estate planning, and philanthropic activities. Rather than segmenting these functions across external advisors, the firm manages them centrally, a posture designed to align governance with long-duration capital allocation. The firm pursues a multi-asset strategy that includes private equity, public equities, real estate, and alternative fund commitments. It participates across early-stage, growth, and late-stage venture, typically through direct co-investments, special-purpose vehicles, and limited-partner positions in pooled funds. The investment mandate concentrates on North American opportunities in ClimateTech, Digital Health, Energy Transition & Renewables, and Healthcare Services, integrating ESG and AI/ML themes as cross-cutting technology focuses. The firm explicitly avoids gaming, media, cannabis, and secondaries. Medeiros operates the firm as the named principal, with a disclosed professional presence through the office's LinkedIn page. The office has not published team headcount, deployment totals, or adjacent vehicle structures such as a named philanthropic foundation, limiting visibility into the full operational architecture. No recent operational events — such as disclosed fund closes, leadership promotions, or public transactions — have been confirmed from the last 24 months. The structural differentiator is the firm's conscious integration of advisory functions — tax, estate, and philanthropy — alongside direct investment execution, a departure from the more common model where the family office delegates non-investment activities to external counsel.