vcvibes

Parametric Holdings LLC

Emerging manager

SEC exempt reporting adviser (venture capital exemption).

HQ
MA

Parametric Holdings LLC, operating as Propeller, describes itself as early stage investors who develop high conviction in their investments, with themes in ocean industrials, carbon, and organics. The team lists several general partners, managing partners, and operating staff. Portfolio companies include offshore power, coated rebar, ocean sensing, carbon capture, maritime fuel, and subsea cable protection.

New fund likely raising soon

The firm's newest fund is 4 to 7 years past its first sale and no newer Form D has been filed.

01 · Says / Does

TagSaysDoes
StagesPre-seed, Series ANot enough dated deals
SectorsEnergy, Agtech, Foodtech, Logistics, Robotics, Carbon captureNot enough dated deals
RegionsGlobalNot enough dated deals

Says: what the firm's funds state. Does: from 0 dated deals in the last 24 months.

02 · Fund history

FundYearSizeStatus
Ocean Propeller Fund I, L.P.

Propeller invests early in founders building ocean industrials, carbon, and organics companies, from pre-seed to Series A, with openness to novel innovations in or adjacent to the ocean. Inferred from the firm's website

2022$58.6M to $120M (Form D)Late investment period

03 · People across funds

04 · Recent deals

No dated deals found yet.

05 · Latest from the firm

No news from the firm's website yet.

06 · Sources

  1. https://propellervc.com/pitch?hsLang=en
  2. https://propellervc.com/portfolio?hsLang=en
  3. https://propellervc.com/about?hsLang=en
  4. https://propellervc.com/

Fund dates and sizes are from SEC Form D filings.

Last verified: Oct 28, 2026