A07 · METHODS · stemGRA dossier · service level R0
GRAPrivate Equity NexusEstablished
STEM foundation

STEM foundation of Private Equity Nexus

The science, technology, engineering and mathematics Private Equity Nexus rests on. Each method has a canonical page in the STEM Commons, hosted by GCRI, and a page here on how it is applied in this field.

Open Financial economics for private markets Back to Private Equity Nexus
Publisher
The Global Risks Alliance
Field
Capital markets and investment, Industry and robotics
Status
Established
Service level
R0: information and enquiries

Method registry

Private equity · 4 methods in use

Reviews currentGRA · Private Equity Nexus

Methods in use

Financial economics and…3HindcastQ3Current
Financial and risk engineering11Cross-validationQ1Current
Scenario design and stress…3BenchmarkQ2Current

Selected method

Method
Financial economics and…
Steward
Investment committee
Assumptions
stated on its page
Limits
what it cannot say, published

Skill on held-out data

050100score 0 to 1 by method, illustrativeFinancial…Financial…Scenario…

Private Equity Nexus · Method registryMethod registry, in outline: domain structure with placeholder names and illustrative values, not a record.

01In brief

The short answer.

The Private Equity Nexus STEM foundation is the set of canonical methods its findings depend on, from financial economics and macro-finance to scenario design and stress testing. Each method has a canonical STEM Commons page and a page here on its use in the capital markets and investment field.

02Canvas

Methods feeding this platform.

Canvas · methods feeding this platformDesign, not a record
STEM foundation of Private Equity Nexus: a private equity investment from screening to exitDeals are screened and diligenced (commercial, financial, legal, physical and transition risk); the investment committee decides; a value creation plan is monitored quarterly until exit. Design of the process, not a record of a run.

Fig.The methods this platform draws on and what each one feeds. Design, not a record.

03Geography

Activity and exposure in the contiguous United States.

For STEM foundation of private equity nexus, in GRA's spatial-finance reading, the map opens on population density and night lights with built-up and settlement extent from NASA GIBS, framed on the contiguous United States; every other NASA layer, live feed and forecast waits in the layer list.

The interactive map needs JavaScript; the layer list and sources are below.

Layers 2

Activity and exposure, for this page

Latest available

NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Blue Marble (NASA) · © OpenStreetMap contributors (ODbL) · Natural Earth

Loading the latest NASA imagery.

Drag to move. Ctrl or ⌘ and scroll, pinch or the buttons to zoom; hover for the values under the pointer; reset returns to the region.

For STEM foundation of private equity nexus, in GRA's spatial-finance reading, the map opens on population density and night lights with built-up and settlement extent from NASA GIBS, framed on the contiguous United States; every other NASA layer, live feed and forecast waits in the layer list.Satellite and model products as NASA publishes them, each with its own date; indicators, not assessments of any place; claim ceiling INTEGRATED.

Data: NASA GIBS · ASTER GDEM · Blue Marble · © OpenStreetMap contributors · Natural Earth · GDACS · CIESIN/Columbia, NASA SEDAC HBASESources and licences

  • We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Center for International Earth Science Information Network (CIESIN), Columbia University. 2018. Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11. NASA Socioeconomic Data and Applications Center (SEDAC). Licensed under CC BY 4.0. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). CC BY 4.0
  • VIIRS Black Marble night-time lights, NASA Goddard Space Flight Center; distributed by the NASA Level-1 and Atmosphere Archive and Distribution System (LAADS DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • VIIRS near-real-time products (flood, land surface temperature, snow cover, corrected reflectance), NASA LANCE; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • NASA Fire Information for Resource Management System (FIRMS), VIIRS 375 m active fire product, NASA LANCE; vector tiles via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • ASTER GDEM is a product of METI and NASA (ASTER Global Digital Elevation Model V003, NASA LP DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Made with Natural Earth. Free vector and raster map data @ naturalearthdata.com. Public domain
  • © OpenStreetMap contributors (ODbL), via NASA GIBS (coastlines, boundaries, roads and place names). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). ODbL
  • Blue Marble, NASA Earth Observatory; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Context on the globe and flat map: coastlines, boundaries, roads and place names from NASA GIBS reference layers (OpenStreetMap data, ODbL, © OpenStreetMap contributors); Blue Marble imagery as an optional base; 3D terrain and the elevation read-out from the ASTER GDEM elevation colour index (5 m to 200 m classes, exaggerated for legibility). Boundaries are drawn as published and imply no position on any territory.
  • Globe: MapLibre GL JS 6.9.1, BSD-3-Clause, © MapLibre contributors.
  • Live: GDACS (EC JRC / UN OCHA) Events are indicative, not official warnings.
  • Context: CIESIN/Columbia, NASA SEDAC HBASE. Center for International Earth Science Information Network (CIESIN), Columbia University, and NASA Socioeconomic Data and Applications Center (SEDAC): Global Human Built-up And Settlement Extent (HBASE) 2010; Seto, Guneralp and Hutyra 2012, Global Grid of Probabilities of Urban Expansion to 2030; Global Urban Heat Island (UHI) Data Set, 2013.
  • Optional layers (35 sources in the layer list: live, forecast, observed and context) print their provider credit on the map and here when switched on; forecasts are model output and derived indices are estimates.

Layers and dates

  • Population density, 2020: Population: CIESIN, Columbia University, Gridded Population of the World v4.11 (2018), NASA SEDAC, CC BY 4.0 · static
  • Night-time lights, daily: VIIRS Black Marble (VNP46A2), NASA LAADS DAAC · 12 Oct 2026
  • Flood water, 3-day composite: VIIRS Global Flood Product, NASA LANCE · 14 Oct 2026
  • Land surface temperature, day, 8-day composite: VIIRS NOAA-20 Level 3, 8-day, NASA LANCE · 14 Sep 2026
  • Active fires and thermal anomalies, last day: VIIRS NOAA-20 375 m (FIRMS), NASA LANCE FIRMS · 13 Oct 2026

04Methods

The methods behind the field.

  1. Financial economics and macro-financePerformance against public alternatives · Rate transmission to leveraged companiesSteward · Financial StabilityApplied here
    Canonical · STEM Commons
  2. Financial and risk engineeringCapital structure and waterfall modelling · Fair value model reviewSteward · Actuarial and Quantitative RiskApplied here
    Canonical · STEM Commons
  3. Scenario design and stress testingRate and refinancing stress · Physical event across a portfolioSteward · Systemic Risk ManagementApplied here
    Canonical · STEM Commons
05Methods

The STEM methods Private Equity Nexus applies, and why.

Each Private Equity Nexus method is described once in the STEM Commons at GCRI and applied here to physical and transition risk across holding periods, leverage and exit.

06Why it matters

Grounding makes claims checkable.

When a finding names the methods it depends on, a reader can see its assumptions and limits, and an expert in that method can challenge it.

07Key terms

Terms used on this page.

Each term as this page uses it. Where a standard-setting body defines the term, the wording follows that body.

TermDefinition
STEM CommonsThe shared reference of science, technology, engineering and mathematics methods for the Nexus network, hosted by GCRI, with one canonical page per method and a named steward platform.
Steward platformThe platform that maintains the canonical description of a method in the STEM Commons and reviews how other platforms apply it.
Financial economics and macro-financeFinancial economics and macro-finance study how asset prices, credit and financial institutions interact with the real economy.
Financial and risk engineeringFinancial and risk engineering designs instruments, models and processes to measure, price and transfer risk.
08Sources

Where this page's references lead.

The bodies and documents this page is read against. Status and editions change; each link goes to the issuing body.

09Pages

Pages in STEM foundation of Private Equity Nexus.

Method

Financial economics for private markets

Method

Risk engineering for private markets

Method

Stress testing private portfolios

10Questions

Questions and answers.

What is a steward platform?
The platform that maintains the canonical description of a method and reviews how it is applied across the Consortium.
Related

Around Private Equity Nexus.

Private Equity Nexus

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