Long-term capital for the physical economy.
We invest in AI infrastructure, energy, and hospitality. When we commit, we are partners: capital, operating support, and a long horizon.
Our Story
Founded on a standard.
AjB Ventures is a private investment firm founded by John Rizzo, a professional engineer and operator. The companies we back benefit from more than capital. We work alongside management on the issues that actually move the business.
The firm is named for Ann and Bart. They set the standard we still use: intensity, intelligence, and integrity.
Work with intensity, intelligence, and integrity.
Our Past Endeavors
Powerful Collaborations
Energy Efficiency and Renewable Energy company
ADI is a successful Energy Efficiency and Renewable Energy company started in 2002 and exited in 2018
Strategic Master Planning and Energy Infrastructure Company
Ocean State Rentals
#1 Newport RI Condo Rentals
OSR was created in 1996 and later sold in 2016 to Paolino Properties and others. OSR owned ocean front real estate in Newport Rhode Island. Original investment was tripled at closing and it had an annual ROE of of 33%.