Telecommunications and digital infrastructure research, with a primary focus on Europe.
Our firm
Zoom In. Zoom Out.
ZIZO Research brings a detailed view of companies together with a wider perspective on their industry and investment context. We serve institutional investors seeking research on telecommunications and digital infrastructure, primarily in Europe.
Our people
Experience across research and industry.
Georgios Ierodiaconou
Founder and Managing Director
Telecommunications and Digital Infrastructure
Georgios has more than 20 years of experience in equity research and has held senior roles in a number of global investment banks. Most recently, he led the European and CEEMEA telecommunications research teams at Citigroup until 2024.
During his tenure, the teams consistently achieved leading rankings among institutional investors, reflected in external surveys. The work spanned corporate actions, sector and cross-sector reports, and investment recommendations grounded in detailed analysis.
He subsequently joined Vodafone, initially in investor relations and later as Head of Strategic and Investment Projects.