# Diadema Partners

Diadema Partners is a RIA based in Morristown, United States.

## Overview

- **Organization type:** RIA
- **Headquarters:** Morristown, United States
- **Region:** North America
- **Address:** New York, NY, United States
- **Assets under management:** Undisclosed

## Regulatory record

- **CRD number:** 331527
- **SEC file number:** 801-130477
- **Registration status:** Registered
- **Reports private funds:** Yes
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/331527

## About

DIADEMA PARTNERS LP is an SEC-registered investment adviser in MORRISTOWN, NJ, registered since 2024. The firm manages approximately $398 million in regulatory assets. It has 6 employees and 4 investment advisers.

## Sectors

- Financial Services
- Real Estate

## People

- Robert G. Wilmers — Founder

## Questions

### Who founded Diadema Partners and what was the source of wealth?

Diadema Partners was founded by the late Robert G. Wilmers, who served as Chairman and CEO of M&T Bank Corporation from 1983 until his death in 2017. His wealth originated from his long-tenured leadership of M&T, which he built into one of the best-performing regional banks in the United States through conservative credit culture and disciplined acquisitions.

### What is Diadema Partners' primary investment focus?

The office concentrates on two areas tied to Wilmers' professional expertise: community and regional bank investing, often through direct equity stakes, and commercial and multi-family real estate in the Northeast. The strategy emphasizes stable, income-producing assets and avoids venture capital, technology bets, or sectors outside Wilmers' demonstrated circle of competence.

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Last updated: 2026-07-06T01:24:15.295Z

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