Every quarter, a number arrives from each of your private fund sponsors. It sits at the bottom of a statement or inside a portal, labeled NAV. Most investors glance at it, note whether it went up or down, and move on.
That number deserves more scrutiny than it usually gets — not because it is unreliable, but because it is frequently misread. NAV is an estimate, not a price. Understanding the difference changes how you should interpret every NAV you receive.
What NAV actually is
NAV stands for Net Asset Value. In its simplest form, it is the value of a fund's assets minus its liabilities — what would theoretically be left over for investors if the fund sold everything and paid off everything it owed today.
For a single investment, your NAV is your proportional share of that number. If a fund reports a total NAV of $50 million and you own 2% of the fund, your NAV is $1 million.
This is the same basic concept behind NAV in a public mutual fund — assets minus liabilities, divided among shareholders. The difference in private markets is entirely in how the "assets" number is determined.
Why private market NAV is fundamentally different from a public price
In a public mutual fund or ETF, NAV is calculated by looking up the current market price of every holding and summing them. The process is mechanical because market prices exist and are observable in real time.
Private market assets have no market price to look up. A real estate syndication's apartment complex does not trade on an exchange. A private equity fund's portfolio company is not listed anywhere. The value of these assets has to be estimated — and that estimation is done by the general partner, using valuation methodologies that are reasonable but inherently judgment-based.
This is the single most important thing to understand about NAV in private markets: it is the sponsor's current best estimate of value, not a transaction price. No one has actually bought or sold the underlying asset at that number. It is what the GP believes the asset is worth, updated periodically, using accepted valuation approaches.
How sponsors actually calculate NAV
The specific methodology varies by asset class, but the general approaches are consistent.
For real estate, NAV is typically derived from net operating income divided by a capitalization rate — essentially estimating what the property would sell for based on its current income and prevailing market pricing for similar assets. The formula is: property value equals NOI divided by cap rate. From that value, the sponsor subtracts outstanding debt and planned capital expenditures to arrive at the equity value, which becomes the basis for investor NAV.
For private equity, portfolio companies are valued using a combination of methods — comparable public company multiples, recent transaction prices for similar businesses, discounted cash flow analysis, or the price of the most recent financing round if the company raised capital recently. GPs are required to follow valuation guidelines, typically consistent with fair value accounting standards, but the process still involves meaningful judgment, particularly for earlier-stage or harder-to-comp businesses.
For private credit, NAV is generally more straightforward — loans are often valued at par (their face value) unless there is a specific reason to mark them up or down, such as a credit event, a change in the borrower's financial condition, or a change in prevailing interest rates for similar credit risk. This is part of why private credit NAV tends to be less volatile than private equity or real estate NAV.
Why NAV moves slower than public markets
One of the most consistent observations about private market NAV is that it lags reality. When public markets move sharply, private market NAVs typically do not move at all in the same period — not because the underlying assets are immune to the same conditions, but because the valuation process takes time to reflect new information.
Private real estate NAV adjustments often trail public market movements by at least a quarter, and in some cases the private market NAV shows minimal reaction to a public market event that does not directly change the property's income or the market's required return for that asset type. A tech-driven public equity selloff, for instance, may have limited effect on a stabilized multifamily property's NAV if rents and occupancy remain steady.
This lag is not a flaw exactly — it reflects the fact that private assets generate value differently than publicly traded securities. Property income, for instance, contributes a relatively modest share of total real estate return in a typical year; the majority of return comes from the residual value of the asset, which is driven primarily by capital market conditions like interest rates and cap rates rather than short-term operating news.
But the lag has a practical consequence: a NAV that looks stable during a period of market stress may not stay stable once the valuation catches up. Investors who read flat NAV during a downturn as evidence that their private positions are insulated from the broader market sometimes discover otherwise when the next valuation cycle reflects updated conditions.
What can make NAV move — and what doesn't
Understanding what actually drives NAV changes helps you interpret the number correctly when it arrives.
Sustained changes in operating performance move NAV. A property with consistently rising rents and occupancy will see its NAV increase over time as the sponsor's valuation reflects that improved income. A portfolio company with declining revenue will see its NAV marked down.
Changes in capital market conditions move NAV — often more than operating performance does. Rising interest rates typically push cap rates higher, which mechanically reduces the implied value of income-producing real estate even if the property's own performance hasn't changed. The same dynamic affects private equity valuations through the discount rates and public market comparables used in the valuation process.
Short-term or one-off events generally do not move NAV much, if the sponsor believes the underlying fundamentals remain intact. A single quarter of higher vacancy due to a specific lease expiration, for example, may not meaningfully change NAV if the sponsor's view is that the space will be re-leased at similar or better terms.
A recent financing event can move NAV significantly and quickly. If a private equity portfolio company raises a new funding round at a higher or lower valuation than the last mark, sponsors often adjust NAV to reflect that transaction price, since it represents an actual market data point rather than a model-based estimate.
What NAV is used for beyond your quarterly statement
NAV is not just a reporting figure — it has real functional uses within a fund's operations that are worth understanding.
Secondary market pricing. If you or another LP wants to sell an interest in a fund before it winds down, NAV is the reference point buyers and sellers negotiate around — typically at a discount to reflect the illiquidity and uncertainty of the secondary transaction. A fund with more volatile or less trusted NAV marks tends to trade at a wider discount on the secondary market.
NAV-based financing. In recent years, GPs have increasingly used NAV facilities — loans secured against the value of a fund's portfolio, rather than against uncalled LP commitments — to provide liquidity without forcing asset sales. The overall NAV lending market has grown substantially, becoming a mainstream tool that sponsors use to extend hold periods, fund add-on investments, or provide flexibility when exit markets are unfavorable. If a fund you're invested in uses NAV financing, it introduces leverage at the fund level that sits ahead of LP returns — worth understanding if it appears in your fund's disclosures.
Performance metrics. NAV is the unrealized component of your DPI and TVPI calculations. Your current NAV, combined with distributions received to date, is how your total return is measured before the fund has fully exited. This is one of the more important practical reasons to track NAV carefully across your portfolio.
How to read NAV without over-trusting or under-trusting it
A healthy approach to private market NAV sits between two mistakes.
The first mistake is treating NAV as gospel — assuming that because a number came from your sponsor with an official-looking statement attached, it precisely reflects what your investment is worth. NAV is an estimate. Reasonable, professionally produced, generally directionally accurate — but an estimate.
The second mistake is dismissing NAV entirely, assuming that because it is not a market price it tells you nothing useful. NAV trends over time are genuinely informative. A fund whose NAV has grown steadily and consistently, in a way that aligns with its stated business plan, is telling you something real about its performance. A fund whose NAV has been flat for years despite claims of strong underlying performance, or whose NAV moves in ways that seem disconnected from what the quarterly narrative describes, is also telling you something worth paying attention to.
The most useful approach is to track NAV over time, alongside the sponsor's narrative explanation for why it moved, and to be more skeptical of NAV the longer it has been since the last independent data point — a recent financing round, a comparable transaction, or a third-party appraisal — validated the sponsor's marks.
Tracking NAV across a portfolio of multiple funds
Because each sponsor updates NAV on its own schedule — quarterly is most common, though some funds report less frequently — keeping an accurate, current view of your total portfolio value requires updating each investment's NAV as new statements arrive.
This matters more than it might seem. Both your XIRR and your DPI and TVPI calculations depend directly on having an accurate, current NAV for each investment — a stale NAV produces return calculations that no longer reflect where your portfolio actually stands. If you are tracking your portfolio manually, outdated NAV is one of the most common ways a spreadsheet quietly drifts out of sync with reality.
AltTrack lets you enter each sponsor's official NAV as it arrives, keeping your portfolio valuation, performance metrics, and allocation analysis grounded in the most current information your sponsors have provided — while making clear that each NAV is a mark, not a market price, exactly as it should be understood.
NAV will always be the best estimate available rather than a definitive answer. Understanding how it is built, what moves it, and how it lags reality is what allows you to use it well.