CornerStone Partners LLC
CornerStone Partners LLC is an SEC-registered Outsourced Chief Investment Officer (OCIO) firm serving U.S. not-for-profit institutions including colleges, universities, private foundations, endowments, and public charities, with $29.18 billion in institutional AUM as of December 2025.
- Company typePrivate
- Founded2004
- HeadquartersCharlottesville, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What CornerStone Partners LLC does
CornerStone Partners LLC is a Charlottesville, Virginia-based Outsourced Chief Investment Officer (OCIO) provider serving mission-driven not-for-profit organizations, including colleges and universities, private foundations, endowments, and public charities across the United States. Founded approximately two decades ago (firmographics indicate 1997; company history indicates 2004) and operating as an SEC-registered investment adviser, the firm manages $29.18 billion in institutional assets as of December 31, 2025 and is structured as a 100% employee-owned management company affiliated with Focus Financial Partners since 2020.
The firm's core offering is a full-service investment office delivered on a customized basis to each client. Investment-side services include investment policy development, strategic asset allocation, manager research and selection across public and alternative asset classes, portfolio construction, risk management, and ongoing fiduciary governance engagement with client Boards and Investment Committees. Operational services include performance reporting, accounting and tax support, investment administration, portfolio reconciliations against custodian and manager statements, and document management, often delivered through a dedicated operations team that clients treat as an extension of their internal staff. Underlying the offering is an institutional-grade Investment Data Operating Model supported by industry-leading technology solutions and AI-assisted workflows that automate the full investment data lifecycle from ingestion and validation through reconciliation and reporting.
CornerStone monetizes primarily through investment advisory fees disclosed in Form ADV Part 2 under a recurring OCIO mandate structure, supplemented by management fees on CornerStone-managed asset class commingled fund-of-fund vehicles and ancillary fees for back-office operational and administrative services. Go-to-market is relationship-led and enterprise-focused, with senior principals leading each engagement through on-site meetings and conference calls with the client's Board, Investment Committee, and staff. There is no disclosed software, API, or consumer-facing product and no public revenue figure, but headcount of 11–50 employees and institutional AUM scale suggest a professional services model rather than a productized platform.
CornerStone Partners LLC firmographics
Firmographics- Name
- CornerStone Partners LLC
- Legal name
- CornerStone Partners LLC
- Website
- https://cstonellc.com
- Company type
- Private
- Founded year
- 2004
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- CornerStone Partners LLC is an SEC-registered Outsourced Chief Investment Officer (OCIO) firm serving U.S. not-for-profit institutions including colleges, universities, private foundations, endowments, and public charities, with $29.18 billion in institutional AUM as of December 2025.
- Ownership category
- akta.pro rank
CornerStone Partners LLC industry classification
Industry- Product category
- Outsourced Chief Investment Officer (OCIO) Services
- NAICS
- Portfolio Management and Investment Advice (52394), Other Financial Investment Activities (5239)
- SIC
- Investment Advice (6282)
- akta.pro primary industry
- OCIO & Multi-Asset Outsourced Portfolio Management (FSAAAJAF)
- akta.pro secondary industry
- Institutional Consulting RIAs (OCIO/Endowments/Foundations/Pensions) (FSAAACAG)
Keywords
Where CornerStone Partners LLC is headquartered
LocationHeadquarters
- HQ city
- Charlottesville
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
CornerStone Partners LLC business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales
Revenue model
- Investment Advisory Services (OCIO): CornerStone provides Outsourced Chief Investment Officer services for not-for-profit organizations. As an SEC-registered investment adviser, they charge investment advisory fees as described in Part 2 of Form ADV. The firm also offers full-scale back office operational and administrative support as part of their OCIO service.
- Operational and Administrative Services: Additional revenue from comprehensive operations support including performance reporting, accounting and tax support, investment administration, portfolio reconciliations, and document management services provided as part of their OCIO offering.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
CornerStone Partners LLC product offering
Product offeringCore offering
CornerStone Partners provides Outsourced Chief Investment Officer (OCIO) and full-scale investment office services to a select group of not-for-profit organizations, including colleges and universities, private foundations, endowments, and public charities. As an SEC-registered investment adviser, the firm delivers fiduciary portfolio management, strategic asset allocation, manager research and due diligence, portfolio and risk management, and comprehensive back-office operations and administrative support such as performance reporting, accounting and tax support, investment administration, portfolio reconciliations, and document management.
Product overview
CornerStone Partners is a financial services firm that provides Outsourced Chief Investment Officer (OCIO) and investment office services to non-profit organizations including colleges and universities, private foundations, endowments, and public charities. The firm offers a comprehensive suite of investment management services including investment policy development, asset allocation, manager selection, portfolio construction and risk management, and fiduciary excellence programs. In addition to fiduciary portfolio management, CornerStone provides full-scale operational and administrative support including performance reporting, accounting and tax support, investment administration, portfolio reconciliations, and document management. Client portfolios are invested across all major asset classes including equities, bonds, hedge funds, and private equity.
Differentiator
Problem solved
Functional benefit
Products and services
- Outsourced Chief Investment Officer (OCIO) Services Full-service OCIO engagement for not-for-profit clients spanning investment policy development with each client's Board and Investment Committee, valuation-based strategic asset allocation, manager research and due diligence, portfolio construction and risk management, and fiduciary excellence programs. Portfolios are diversified across equities, fixed income, hedge funds, and private equity, with a senior member of the firm leading each client relationship through regular on-site meetings and conference calls.
- Investment Operations and Administrative Support Back-office operational and administrative support bundled with the OCIO engagement, including performance reporting with manager-level and risk-metric detail, accounting and tax support with audit and K-1 documentation, investment administration covering contracts and AML/KYC queries, portfolio reconciliations against manager statements, and document management for each client's investment file. Clients commonly treat CornerStone's operations staff as an extension of their own team.
- Sustainable and Mission-Related Investment Strategy Specialized investment strategy service led by CornerStone's Head of Sustainable Investment Strategy, helping clients incorporate mission-related and socially responsible investing considerations into their investment policies and portfolios. The service supports public-charity and foundation clients that want investment programs aligned with their programmatic missions in health, education, conservation, and community development.
Quantifiable outcome
- $29.18 billion in institutional assets under management
Companies that use CornerStone Partners LLC
Customer profileSegments3 records
Ideal customer profiles3 records
CornerStone Partners LLC technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature2 records
CornerStone Partners LLC partnerships and signals
Strategic signalScale indicators2 records
Recent moves6 records
Expansion highlights4 records
CornerStone Partners LLC competitors and assessment
Company assessmentDirect peers
- Cambridge Associates: Cambridge Associates is a global OCIO and investment advisory firm heavily focused on endowments, foundations, and nonprofit institutions. It is the most direct comparable to CornerStone given the overlapping nonprofit and endowment client base, OCIO service model, and institutional separate-account approach.
- Investure: Investure provides OCIO and investment management services primarily to colleges, universities, foundations, and endowments. It directly competes with CornerStone in the mid-to-lower-endowment OCIO segment with a similar nonprofit-focused, relationship-driven model.
- Commonfund: Commonfund is an asset manager serving nonprofits, foundations, and endowments with OCIO, multi-asset portfolios, and outsourced investment services. It targets the same nonprofit institutional segment as CornerStone with comparable investment advisory offerings.
- Meketa Investment Group: Meketa provides OCIO, investment consulting, and investment management services to a large base of public and private pensions, endowments, and foundations. It is a strong direct peer in the nonprofit and endowment OCIO space with a similar consultative, multi-asset model.
- Verus Investments: Verus is an OCIO and investment consulting firm serving nonprofit institutions, foundations, and endowments. It is a closely comparable peer with a similar multi-asset OCIO service model and dedicated nonprofit focus.
Broad incumbents
- Mercer Investments (OCIO): Mercer, part of Marsh McLennan, offers a broad OCIO and investment consulting platform serving large institutional clients including endowments and foundations. It is a scaled incumbent with overlapping capabilities, though its OCIO offering sits within a much broader advisory and HR services portfolio.
- Russell Investments: Russell Investments provides OCIO, investment management, and consulting services to institutional investors including endowments and foundations. It is a broad incumbent with significantly larger AUM and global reach, competing for the same institutional nonprofit mandates as CornerStone.
- SEI Investments: SEI Investments offers OCIO and outsourced investment management solutions to institutional clients including nonprofits, foundations, and endowments. It competes as a scaled, technology-enabled incumbent with a multi-asset platform overlapping CornerStone's OCIO offering.
- Aon (OCIO / Investment Solutions): Aon provides OCIO and investment advisory services through its Investment Solutions business, serving large institutional clients including endowments and foundations. It is a broad incumbent with global scale competing for similar nonprofit and institutional mandates.
- BNY Mellon Investment Management (OCIO): BNY Mellon offers OCIO and outsourced investment solutions to institutional investors including nonprofits, foundations, and endowments. It is a broad incumbent leveraging custody and investment management scale to compete with focused OCIOs such as CornerStone.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
CornerStone Partners LLC social profiles
Digital presenceCornerStone Partners LLC financial estimates
Financial estimateRevenue estimate
Valuation estimate
CornerStone Partners LLC leadership team
Management profileNumber of profiles
Profiles13 records
CornerStone Partners LLC funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
CornerStone Partners LLC M&A and investment
M&A and investmentM&A
Investments2 records
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about CornerStone Partners LLC
What does CornerStone Partners LLC do?
CornerStone Partners provides Outsourced Chief Investment Officer (OCIO) and full-scale investment office services to a select group of not-for-profit organizations, including colleges and universities, private foundations, endowments, and public charities. As an SEC-registered investment adviser, the firm delivers fiduciary portfolio management, strategic asset allocation, manager research and due diligence, portfolio and risk management, and comprehensive back-office operations and administrative support such as performance reporting, accounting and tax support, investment administration, portfolio reconciliations, and document management.
Is CornerStone Partners LLC a public or private company?
CornerStone Partners LLC is a private company. It is classified as management employee owned and is currently operating.
When was CornerStone Partners LLC founded?
CornerStone Partners LLC was founded in 2004. It employs 11 to 50 people.
Where is CornerStone Partners LLC based?
CornerStone Partners LLC is headquartered in Charlottesville, United States, in the North America region.
How does CornerStone Partners LLC make money?
Two revenue lines are on record. Investment Advisory Services (OCIO) is the primary driver. The others are operational and Administrative Services.
Who are CornerStone Partners LLC's main competitors?
Direct peers on record are Cambridge Associates, Investure, Commonfund, Meketa Investment Group and Verus Investments. Broad incumbents are Mercer Investments (OCIO), Russell Investments, SEI Investments, Aon (OCIO / Investment Solutions) and BNY Mellon Investment Management (OCIO).
Does CornerStone Partners LLC have an API?
No public API is recorded for CornerStone Partners LLC.
What industry is CornerStone Partners LLC in?
CornerStone Partners LLC's product category is Outsourced Chief Investment Officer (OCIO) Services. Its primary akta.pro industry code is FSAAAJAF, OCIO & Multi-Asset Outsourced Portfolio Management, with a secondary code of FSAAACAG, Institutional Consulting RIAs (OCIO/Endowments/Foundations/Pensions). Its NAICS code is 52394 and its SIC code is 6282.