Private Markets Asset Classes: A Guide to Where Capital Actually Goes

Most conversations about private markets treat it as a single asset class. It isn't. Private equity, venture capital, private credit, infrastructure, and real assets each operate differently, reward investors for different things, and have distinct roles in a portfolio. Knowing which is which matters, because the "private markets" label now covers a much wider range of strategies than it once did. Global private markets closed-end AUM reached between $16 trillion and $16.5 trillion in 2025, according to McKinsey's 2026 Global Private Markets Report. That growth has also created confusion about what the category actually includes. This piece covers each asset class in turn.

Private Equity

Private equity is the acquisition and active management of ownership stakes in private companies, typically through buyout funds. A GP raises a closed-end fund, deploys capital into companies over a three to five-year investment period, works to improve operations and financial performance, then exits through a sale, secondary, or IPO within a four to seven-year holding window.

Returns typically come from buying well, improving the business, and exiting at a higher valuation or to a broader pool of buyers. McKinsey's 2026 report notes that outcomes will increasingly be shaped by how consistently managers create operational value, with market dynamics providing less of a tailwind than they did in the prior decade. For investors, that shifts the manager selection question toward operational capability rather than track record during a favourable cycle.

Buyout remains the dominant sub-strategy. Growth equity, which targets profitable earlier-stage companies that don't require full operational transformation, sits alongside it, as do co-investments, where LPs invest directly into individual deals without paying a second layer of fees. Co-investments have become a useful fee-efficiency lever for larger allocators, though they require more internal underwriting capability to execute well.

Consensus return expectations for private equity buyout sit at approximately 10.2% on a long-run basis, based on 2026 capital market assumptions aggregated across KKR, BlackRock, J.P. Morgan Asset Management, and PGIM, up from 9.3% in 2025. Distributions were constrained through 2024 and into 2025 as IPO markets stayed selective and M&A volumes were subdued. The backlog of mature companies in PE portfolios points to more active exit markets over the next two to three years, which should improve the pace of capital return to investors.

Venture Capital

Venture capital funds early and growth-stage companies in exchange for equity, with returns driven by a small number of high-performing investments rather than the portfolio as a whole. In many venture funds, the top one or two companies drive most of the fund-level return, which means the asset class behaves quite differently from buyout, where diversification and portfolio construction tend to play a larger role in managing downside risk.

The GP typically holds a minority position and has limited ability to impose operational change. Returns depend on founder quality, market timing, and getting the entry price right. A single vintage concentrated in late 2021, when valuations were at peak, produced dramatically different outcomes than the same manager's 2018 or 2023 vintage. Preqin's 2026 Global Report notes the exit environment improved in 2025, but GPs remain under pressure to accelerate distributions to investors.

Access is also a practical consideration. The best VC managers tend to be oversubscribed, with long-standing LP relationships and limited capacity for new investors. Co-investment vehicles, secondary positions in VC funds, and platforms with curated access to late-stage private companies offer more realistic entry points for those outside the institutional LP network.

Consensus long-run return expectations sit at approximately 10.0%, according to the same 2026 capital market assumptions. The dispersion around that mean is wider than in any other private asset class, which makes manager selection particularly important.

Private Credit

Private credit is non-bank lending to companies that either cannot access, or choose not to access, public debt markets. A GP raises a fund, lends that capital to companies, earns interest over the holding period, and returns principal at maturity. Because the return is income-driven rather than dependent on exit multiples, the asset class carries different correlation characteristics than equity strategies, which has made it increasingly attractive to allocators looking for yield with lower mark-to-market volatility.

Direct lending to mid-market companies at floating rates is the core sub-strategy. That floating rate structure was the defining feature of the 2022 to 2024 cycle: as central banks raised rates, private credit yields rose in lockstep while bond portfolios fell in value, drawing significant new capital into the asset class.

Beyond direct lending, asset-based finance, which involves lending against diversified pools of cash-flowing assets such as mortgages, equipment, or consumer loans, has become one of the faster-growing sub-strategies, with Ares Management describing the total addressable market at $28 trillion. Credit secondaries have also grown considerably: the first three quarters of 2025 saw record fundraising of $16 billion, more than the prior three years combined, according to WithIntelligence.

The important caveat is that today's private credit market has not yet been tested through a full credit cycle. Partners Group's 2026 outlook flags bifurcation, with large-company direct lending facing margin compression while middle-market lending remains more attractive. WithIntelligence notes that once selective defaults and liability management exercises are accounted for, the effective default rate approaches 5%, compared with the headline rate below 2% that most managers report. That gap is worth understanding before allocating. Consensus long-run return expectations sit at approximately 7.0%.

Infrastructure

Infrastructure funds invest in physical assets with high barriers to entry and long-duration cash flows: toll roads, airports, ports, energy networks, and increasingly data centres and power generation tied to AI compute demand. Cash flows are typically contracted and often inflation-linked, which gives the asset class low correlation to public equities and a different role in a portfolio than equity or credit strategies.

Investor appetite has grown materially. HarbourVest's 2026 market outlook notes that infrastructure surpassed $200 billion in annual fundraising for the first time through Q3 2025. In McKinsey's LP survey, infrastructure also had the highest proportion of investors intending to increase allocations over the next 12 months. McKinsey estimates $106 trillion will be needed for global infrastructure investment through 2040, with private capital increasingly filling the gap left by constrained public budgets. Data centre construction, power demand, and grid modernisation have expanded that pipeline faster than many forecasts anticipated even two years ago.

Consensus return expectations sit at approximately 9.6% for private infrastructure, the largest year-over-year upward revision of any private asset class, up from 7.4% in 2025. Because returns are driven by contracted cash generation rather than operational improvement or market timing, the risk-return dynamic is different from private equity or venture capital, and the portfolio role reflects that.

Real Assets

Real assets cover real estate, agriculture, timber, commodities, and natural resources. It is less a single strategy than a group of tangible asset exposures. The common thread is sensitivity to inflation: when inflation runs above trend, real assets can preserve value in ways that many financial assets may not, which is the primary reason allocators include them alongside other private market positions.

Consensus long-run return expectations sit at approximately 6.3%, the lowest of the five asset classes, reflecting an income-oriented rather than growth-oriented return profile. That lower number is appropriate context for what the allocation is doing: providing inflation protection and diversification, not driving overall portfolio returns.

Real estate is the largest sub-category and has undergone a meaningful repricing since 2022. BlackRock's 2026 private markets outlook identifies apartments and industrial properties such as warehouses as among the stronger opportunities, driven by structural supply constraints. Specialised assets including data centres, life-sciences facilities, and self-storage have grown as a share of the investible universe. With cap rate compression no longer a meaningful return driver, execution and capital structure discipline have become more important to outcomes.

Agriculture has attracted increasing institutional interest as a distinct sub-allocation, valued for low correlation to financial assets and reliable income generation. The market for institutional-quality agricultural investment structures is less developed than other private asset classes, which makes fund manager selection and due diligence particularly important for investors approaching it for the first time.

How the Asset Classes Fit Together

The five asset classes serve different portfolio functions and are usually held together, rather than treated as substitutes. Private equity and venture capital drive returns over long horizons. Private credit provides current income with a different risk profile than equity strategies. Infrastructure and real assets contribute inflation linkage and cash flow stability that equity and credit strategies don't replicate.

The right mix depends on what an investor actually needs. Time horizon, liquidity requirements, and whether the priority is income, growth, or inflation protection all affect how the asset classes should be weighted. The return expectations cited throughout this piece are long-run consensus figures. Individual managers, vintages, and market conditions will produce outcomes that diverge from those averages in both directions.

Before allocating to any of these categories, investors should understand the risks that sit behind the return profile, including illiquidity, valuation uncertainty, manager dispersion, and the potential loss of capital. The risks of private market investing in Australia are covered in more detail on the NonPublic blog.

NonPublic Pty Ltd (ABN 49 607 216 928) holds Australian Financial Services Licence #482668. Investments are available to wholesale and sophisticated investors as defined under the Corporations Act 2001. This content is general in nature and does not constitute financial product advice. It does not take into account your objectives, financial situation, or needs. Investing in private markets involves significant risk, including the potential loss of your entire investment. Past performance is not a reliable indicator of future results. You should obtain independent financial advice before making any investment decision.