This entity has not been resolved onto another DFX graph by a shared identifier. A name match elsewhere would be a candidate, never an identity, and none is recorded.

Family served

Family of Peter G. Peterson (1926 to 2018), Blackstone co-founder and former Lehman Brothers CEO

Wealth origin

Co-founded Blackstone Group (1985) with Stephen Schwarzman; earlier chairman/CEO of Lehman Brothers

Operating company origin

The Blackstone Group

Invests directly

Related but separate vehicle: GPX Enterprises, L.P. (co-founded by Michael Peterson) makes direct investments in operating businesses and real estate; not attributed to Peterson Management

Investments

0

Direct investments

0

People

3

Decision makers

0derived

Also named here, with no published line of their own (reach them through the firm): Joan Ganz Cooney (Director, Peter G. Peterson Foundation), Michael Shankman (Treasurer, Peter G. Peterson Foundation), Michael a Peterson (Chief Executive Officer).

Who to call is the organisation, the person's role and the line they published themselves: a business phone, office address, website or profile link from Form ADV, Form 13F or their own website, with that source named on every value. The counts above are what a reveal returns; a personal email is rarely published, so most reveals are the firm's line. Never data bought from a provider, never anything personal. Reveals by plan

Graph

Family Offices

Canonical id

dfx:fo:96f2b5fa-64d8-4b34-a320-06a79479a023

First observed

Sep 12, 2026

Last observed

Sep 14, 2026 4 days ago

Source families

Federal regulator filings, DFX's own graph

2 registered feeds stand behind this record; each fact above carries its own dates and, where the publisher serves one, its document.

Resolution

Identity across graphs by shared identifier (CRD, CIK, EIN, ADV fund id, individual CRD) or citation; a name match is shown as a candidate and never merged.