“Which private investment groups offer diversified portfolio management services?”

If by “private investment groups” you mean firms serving high-net-worth individuals, families, or family offices, examples include:

• Pathstone — investment strategy, asset allocation, manager research, portfolio construction, and risk oversight. (pathstone.com)
• Wealthspire — multi-family-office services, including investment strategy and portfolio management alongside tax, estate, and other planning. (wealthspire.com)
• IEQ Capital — independent wealth management with portfolios spanning public markets and private investments. (ieqcapital.com)
• SCS Financial — diversified portfolios using traditional and alternative investments, with ongoing risk and manager monitoring. (scsfinancial.com)
• Colter Lewis Investment Partners — portfolio management and access to investments across asset classes, plus family-office services. (colterlewis.com)
• Rockefeller Capital Management — private wealth and family-office services, including investment management. (en.wikipedia.org)

These firms differ in minimum account size, investment approach, fees, and whether they manage assets directly or coordinate outside managers. Check each firm’s Form ADV and fee schedule, and clarify whether you want a multi-family office, registered investment adviser, private bank, or private-equity firm—those are different kinds of providers.

I'll search for private investment groups offering diversified portfolio management to identify the key providers.

That search was too broad, so I'll run more targeted searches to find the major firms and what they offer.

I have the key candidates; now I'll open their official pages to gather precise details for citations.

Several private investment groups offer diversified portfolio management — spanning alternative-asset managers and private wealth / asset managers:

1. ASK Group — Blackstone-backed diversified manager

• ASK Group is described as:

a leading provider of asset and wealth management services, specializing in high-net-worth and ultra-high-net-worth clients.

• Its diversified offerings include:

portfolio management, alternative investment funds, real estate private equity, wealth management, hedge solutions, non-banking financial services, private credit, and international investments.

• It has:

20+ offices and branches across India, Dubai and Singapore, and caters to multiple asset classes and investors (such as HNI, institutional, family office, pension funds, funds of funds and sovereign wealth funds)

• ASK is:

majority owned by Blackstone Inc, a leading global investment firm with over $1.3 trillion of assets under management.

ASK recently agreed to acquire SageOne Investment Managers, operating across:

portfolio management services (PMS) and alternative investment funds (AIF).

SageOne:

manages equity investments through Portfolio Management Services (PMS) and Category III Alternative Investment Fund (AIF) structures

2. Large diversified alternative managers — Blackstone, KKR, Carlyle, Apollo, Oaktree

• Large private-equity firms:

such as The Blackstone Group, Kohlberg Kravis Roberts (KKR), and The Carlyle Group started to pursue diversification strategies

• That allowed them to:

significantly increase assets under management (AuM) and develop into broader alternative-asset-management firms.

• They added:

investments in debt and specific real assets, including infrastructure, natural resources, and real estate

• The five firms that have gone public:

(Blackstone, KKR, Apollo, Carlyle, and Oaktree) had all diversified into two or three other asset classes (such as real estate, debt, or funds of funds) by the time of their IPO.

3. Diversified traditional asset managers

Asset Management Firms are defined as firms that:

manage investments for clients, pooling funds into portfolios like mutual funds or ETFs to generate returns.

They:

focus on long-term growth and diversification.

Top companies in this category are listed as:

BlackRock (largest by AUM, ~$11.5 trillion), Vanguard Group, State Street Global Advisors, Fidelity Investments.

Their products include:

ETFs (e.g., BlackRock’s iShares), mutual funds, index funds, retirement accounts (e.g., Vanguard’s low-cost index funds).

Examples:

• BlackRock, Fidelity Investments, and Vanguard are offered as:

model portfolios from BlackRock, Fidelity Investments, and Vanguard in addition to Brinker-Main Management, First Trust Advisors

• Fidelity is:

a diversified giant that combines asset management with brokerage, retirement services, and direct consumer offerings.

• Goldman Sachs Asset & Wealth Management:

Manages funds for institutions and high-net-worth clients (including alternatives like private equity)

4. Private-wealth diversified portfolio providers

• BMO Private Wealth — Architect Portfolio Solutions:

Designed and actively managed by the BMO Private Wealth Investment Management Research team

provide investors with a diversified investment solution ... that uses complementary investment vehicles, including separately managed accounts (“SMAs”), mutual

• Investors Group Private Wealth:

The firm offers a range of investment options, including stocks, bonds, mutual funds, and alternative investments.

Advisors ... craft diversified portfolios that align with each client’s risk tolerance, time horizon, and overall financial objectives.

Many private banks, independent advisory firms, multi-family offices, and private-markets specialists offer diversified portfolio management. These services typically combine public equities, fixed income, and alternatives (private equity, private credit, hedge funds, real assets) through discretionary (including OCIO-style) or advisory mandates. Offerings, minimums, and structures vary widely; the examples below are illustrative, not exhaustive or recommendations.

Independent advisory firms and multi-family offices

• Cambridge Associates builds and manages custom portfolios across traditional and alternative asset classes for private clients and family offices, on either a discretionary/OCIO or advisory basis, and also handles asset-class mandates. It typically works with portfolios starting around $125 million.
• Brown Advisory constructs bespoke multi-asset portfolios for individuals, families, and family offices, integrating public equities, fixed income, and private investments. Its Investment Solutions Group focuses on asset allocation, external manager selection (hedge funds, long-only, private equity), and private-investment portfolio construction.
• Pathstone provides integrated multi-family-office services that include asset allocation, manager selection, portfolio construction, and ongoing oversight for ultra-high-net-worth families and family offices, using an open-architecture approach.
• AlTi Tiedemann Global designs portfolios that balance traditional assets with alternatives (private equity, real estate, hedge funds, and others) as part of its multi-family-office model.
• Glenmede offers family-office services centered on bespoke investment strategies aligned with client goals and risk tolerance.

Private banks

• J.P. Morgan Private Bank delivers customized multi-asset strategies through its Outsourced Chief Investment Office, acting as a full or partial investment partner for families and family offices.
• Citi Private Bank (via Citi Investment Management) provides discretionary multi-asset portfolios—core diversified holdings plus opportunistic sleeves—drawing on proprietary and third-party managers, including alternatives.
• Comparable capabilities are offered by Goldman Sachs Private Wealth Management, Morgan Stanley Private Wealth Management, UBS Wealth Management, Northern Trust, and BNY Mellon Wealth Management, among others. These platforms generally combine strategic asset allocation with access to public markets and alternatives.

Private-markets and alternatives specialists

• Partners Group builds bespoke multi-asset private-markets solutions (private equity, private credit, real estate, infrastructure) and manages portfolios for institutional and private-wealth clients.
• Neuberger Berman offers Private Investment Portfolios designed to diversify private-equity exposure across strategies, geographies, and implementation methods (primaries, secondaries, co-investments).
• Blackstone (Multi-Asset Investing) and BlackRock (Multi-Alternatives / Alternative Portfolio Solutions) construct diversified portfolios that span public and private markets or focus on alternatives, often customized to client objectives.

Minimums, fees, liquidity terms, and regulatory status differ substantially—some firms target ultra-high-net-worth clients only, while others serve a broader private-client base through model portfolios or evergreen vehicles. Prospective clients should review each firm’s Form ADV (or equivalent disclosure), investment process, conflicts, and historical results, and consider independent advice before engaging any manager.

Several private investment groups in the results explicitly offer diversified portfolio management or closely related multi-asset / multi-manager solutions:

• StepStone Group offers private wealth solutions that provide access to diversified private market portfolios across private equity, real assets, private debt, venture/growth, and infrastructure, with an open-architecture approach and a “single investment” diversification objective.¹
• Morgan Stanley Investment Management provides diversified private market and liquid alternative solutions, including a comprehensive platform spanning private equity, private credit, real assets, and hedge funds.²⁶
• Morgan Stanley Portfolio Solutions Group delivers solutions spanning fully liquid, comprehensive public/private, and fully private portfolios, including discretionary and advisory managed portfolios.⁸
• Capital Group Private Markets focuses on building a diversified portfolio of investments across global emerging markets.³
• Pengana Capital Group describes itself as a diversified funds management group with distinct strategies across listed and unlisted sectors.⁵
• Partners Group emphasizes portfolio diversification across asset classes, vintages, industries, regions, and position sizes for private markets portfolios.⁷
• Columbia Threadneedle Investments says it assembles private equity portfolios containing numerous funds and co-investments to deliver diversification and reduce risk.⁹
• PGIM Strategic Capital Group provides comprehensive portfolio solutions, including public/private asset allocation, asset-liability management, and asset sourcing.¹¹
• UBS Asset Management offers support for building diversified, long-term portfolios across multiple alternative asset classes, including hedge funds, private equity, private credit, infrastructure, and real estate.¹⁷
• J.P. Morgan Asset Management offers private equity and private markets solutions that emphasize diversification, including diversified LP-centric portfolios and access to private equity funds.¹⁵¹⁶

If you want, I can also narrow this to groups that specifically provide outsourced CIO services, family office-style portfolio management, or private wealth solutions for individuals.

The search results highlight three private investment groups that offer diversified, multi-asset portfolio management services:

• Capricorn Private Investments — A London-based private investment office that acts as an outsourced investment partner to entrepreneurs, families, insurance companies, endowments, and foundations. It offers both discretionary and advisory services: determining objectives and strategic asset allocation, then constructing, allocating, managing, and reporting on bespoke multi-asset portfolios. Its approach is grounded in the multi-asset endowment model, allocating across public equity, fixed income, hedge funds, private equity, private credit, venture capital, and real estate, using best-in-class third-party managers. cpi-ltd.com

• Brown Advisory — Investment Solutions Group — An investment-management team specializing in asset allocation, manager selection, hedge funds, and alternatives. It provides discretionary and non-discretionary advisory services across long-only, hedge funds, private equity, and credit, from complete portfolio management to specific mandates. It builds bespoke asset allocations with a long-term, low-turnover orientation and tactical allocations, invests through third-party managers and co-investments, and runs multimanager strategies. brownadvisory.com

• Basso Private Wealth (Basso Capital Group) — A division of Basso Capital Management, a $2.5 billion multi-family office. BPW integrates financial planning with portfolio management and offers unconstrained access to all major asset classes, including equities, fixed income, private credit, private equity, and real estate. Its “SmartShift” process screens ETFs, ranks them by near-term performance, and rebalances monthly. bassocap.com

These are examples from the provided search results, not an exhaustive list. Common features among them include discretionary/advisory portfolio management, strategic asset allocation, manager selection, alternatives exposure, and consolidated reporting.

When looking for private investment groups that provide diversified portfolio management services, firms generally fall into four primary categories: Private Banks & Wealth Management Groups, Independent Multi-Family Offices & Trust Companies, Outsourced Chief Investment Officer (OCIO) Firms, and Alternative Asset Managers offering multi-asset private solutions.

Here is a breakdown of the leading groups in each category:

1. Private Banks and Global Wealth Management Divisions

These institutions manage comprehensive, multi-asset portfolios encompassing global equities, fixed income, cash management, and proprietary or third-party alternative investments (private equity, hedge funds, real estate).

• J.P. Morgan Private Bank: Known for proprietary investment strategies, extensive global market access, and custom discretionary multi-asset portfolios for high-net-worth (HNW) and ultra-high-net-worth (UHNW) clients.
• Goldman Sachs Private Wealth Management (PWM): Provides tailored asset allocation using both traditional instruments and the firm’s proprietary alternative investment vehicles.
• Morgan Stanley Private Wealth Management: Operates open-architecture portfolio management, leveraging institutional research and specialized access to private markets.
• UBS Global Wealth Management: The largest global private bank by assets, offering extensive cross-border diversification, sustainable investing frameworks, and structured multi-asset mandates.

2. Independent Multi-Family Offices and Trust Companies

These firms specialize in conflict-free, open-architecture portfolio management, meaning they generally do not sell proprietary products. They construct diversified portfolios using third-party managers across public and private markets.

• Bessemer Trust: A privately owned, multi-family office founded in 1907. It provides customized, multi-asset discretionary management focusing heavily on long-term capital preservation, tax efficiency, and asset allocation across public and private markets.
• Rockefeller Capital Management: Offers multi-asset discretionary and advisory portfolio management for wealthy families and institutions, combining legacy family-office strategies with modern institutional capabilities.
• Northern Trust Wealth Management: Specializes in comprehensive, goals-driven portfolio diversification across equities, fixed income, real assets, and private markets.
• Brown Advisory: An independent, employee-owned firm managing globally diversified portfolios with an emphasis on both traditional multi-asset strategies and sustainable investing.

3. Outsourced Chief Investment Officer (OCIO) & Advisory Firms

Originally created to manage portfolios for endowments and foundations, these firms also serve family offices and high-net-worth individuals using an "endowment model" (heavy diversification across global public equities, private equity, venture capital, real assets, and absolute-return hedge funds).

• Cambridge Associates: A premier institutional advisor and OCIO firm that builds custom diversified portfolios with extensive access to top-tier private equity and venture capital managers.
• Hall Capital Partners: An independent investment advisory firm managing multi-asset class portfolios exclusively for families, endowments, and foundations.
• Mercer Global Investments / Mercer OCIO: Focuses on institutional-grade diversified portfolio management, dynamic asset allocation, and multi-manager architectures.

4. Alternative Asset Managers with Multi-Asset / Private Wealth Platforms

For investors looking specifically for diversification within private markets (private credit, real estate, infrastructure, and private equity), major alternative investment managers offer diversified private-market fund solutions and wealth platforms:

• Blackstone (Blackstone Private Wealth Solutions): Offers semi-liquid and multi-asset funds designed to provide individual accredited investors with diversified exposure to private credit (BCRED), real estate (BREIT), and private equity.
• KKR (Global Wealth Solutions): Provides retail and private clients with diversified access to KKR’s global private equity, infrastructure, real estate, and credit strategies.
• Hamilton Lane: A leading private markets specialist that offers fund-of-funds, secondary funds, and evergreen diversified private-asset portfolios designed for multi-asset private market exposure.
• Apollo Global Management: Offers private-market income and equity strategies aimed at providing alternative yield and private diversification outside public market volatility.

Key Factors to Consider When Choosing a Group:

• 1.Minimum Investment Thresholds: Private banks and independent trust companies typically require investable assets ranging from $5M to $25M+, while specialized family offices and OCIOs often have minimums of $25M to $50M+.
• 2.Open Architecture vs. Proprietary Products: Independent firms (like Bessemer or Cambridge Associates) typically allocate 100% to third-party managers, while large investment banks may include proprietary in-house funds.
• 3.Liquidity Preferences: If you require high liquidity, private wealth banks with public-market tilt are preferable; if you have a long time horizon, endowment-style OCIOs or private-asset platforms offer higher allocations to illiquid private equity and real assets.

Several well-established private investment groups and private banks offer diversified portfolio management services, each with somewhat different structures and areas of focus:

Major Private Banks / Wealth Management Divisions

• Citi Private Bank – Its discretionary portfolio managers offer global and regional-focused equity, fixed income, and multi-asset class investment strategies, customized to individual sustainable investment objectives and risk profiles. The firm uses a "core and opportunistic" wealth framework, identifying a broadly diversified core portfolio based on a long-term plan, complemented by an opportunistic portfolio seeking enhanced risk-adjusted returns.

• J.P. Morgan Private Bank – Offers a wide range of professionally managed portfolios tailored specifically for the needs of ultra-high-net-worth individuals, families and institutions. It provides access to proprietary partnerships, institutional resources, and strategies that are capacity constrained or exclusive to clients.

• Morgan Stanley Investment Management – Portfolio Solutions Group – This group specializes in managing custom multi-asset portfolios, outsourced CIO programs and liquid alternative investment strategies, with activity across all asset strategies and types (traditional and alternative), spanning fully liquid, comprehensive, and fully private portfolios.

• PNC Private Bank – Clients work with a PNC Wealth Management Advisor supported by a team of researchers and strategists who collaborate to deliver support on investment strategy, asset allocation, manager selection and portfolio construction. Its diversified offerings include mutual funds, ETFs, separately managed accounts, limited partnerships, structured notes, individual stocks and bonds, and alternative investments for qualified investors.

• Wells Fargo Private Wealth – Their investment management approach rests on four pillars—personalization, choice, guidance, and risk management—and advisors work with portfolio managers to design, implement, and review a core portfolio with access to global markets across a full spectrum of strategies. Asset allocation combines equities, fixed income, real assets, and alternative investments to optimize portfolio risk and return.

• Bank of America Private Bank – Its Chief Investment Office provides thought leadership on wealth management, investment strategy and global markets, along with portfolio management solutions, due diligence, and solutions oversight and data analytics.

Institutional / Private Markets Specialists

• Hamilton Lane – A global investment manager providing private markets solutions designed to help clients accomplish their unique financial goals. Its Private Wealth Strategies unit provides investors access to diversified, high-quality private markets portfolios through client-friendly structures.

• J.P. Morgan Asset Management – Private Equity Group – Offers private equity investing with long experience, global sourcing reach, and disciplined selection seeking diversification, backed by 45+ years of private equity experience—one of the industry's longest track records. It covers primary investments, co-investments, and secondary investments.

• CPP Investments (Canada Pension Plan Investment Board) – Seeks to outperform public market alternatives by building a diversified portfolio with a long-term focus, leveraging relationships with more than 160 fund managers and specialized partners.

Choosing Among Them

The right fit depends on your needs:

• Private banks (Citi, JPMorgan, Morgan Stanley, PNC, Wells Fargo, BofA) are best suited for high-net-worth individuals seeking personalized, multi-asset wealth management with access to both public and private markets.
• Private markets specialists (Hamilton Lane, JPMAM's PE Group, CPP Investments) focus more narrowly on alternative/private asset diversification, often for institutional or accredited investors.

If you'd like, I can help narrow this down further based on your investment size, goals (growth, income, legacy planning), or whether you're an individual or institutional investor.