Why Gold-Denominated Returns Reveal What Dollar Gains Hide

Over the past five years, the NASDAQ 100 delivered a nominal gain of more than 100%. Measured in gold rather than dollars, that same performance becomes an estimated loss exceeding 20%, according to analysis by Matthew Piepenberg for VON GREYERZ published in September 2026. Two versions of the same five years. Two entirely different stories about whether wealth was created.

The gap exists because the dollar is not a neutral measuring stick. It is a unit of account that has been steadily losing purchasing power through fiscal expansion, deficit spending, and monetary policy choices. With U.S. gross national debt at $40.10 trillion as of 3 September 2026 and a deficit of $1.8 trillion accumulated in just the first 10 months of FY 2026, the conditions that erode a currency are not theoretical. They are structural, and they are ongoing.

This analysis is not a recommendation to buy gold. It applies gold as a measuring instrument. Here is a framework for reading your portfolio against a benchmark that cannot be inflated away, so you can tell the difference between nominal growth and real purchasing-power preservation.

What it means to price your portfolio in gold rather than dollars

Every performance number you have ever seen is relative to something. When your brokerage tells you a fund is up 8%, that figure is measured in dollars. The unspoken assumption is that the dollar itself holds still, that it functions as a fixed ruler against which everything else moves.

It does not. The dollar is a ruler that shrinks. When the money supply expands faster than the economy produces goods and services, each dollar buys less, and a portfolio measured in shrinking units can appear to grow even as its real value stands still or falls.

Currency debasement mechanics operate gradually enough that most investors only see the damage retrospectively, once nominal returns have already been published and celebrated, which is precisely why a forward-looking framework for evaluating purchasing-power exposure matters more than any single gold-denominated calculation.

This is where gold enters, not as an investment thesis but as an alternative ruler. Gold has a specific property that fiat currency lacks: its supply cannot be expanded by a policy decision. No central bank can print more of it, and no fiscal programme can dilute it overnight. Three characteristics separate it from paper money as a unit of account:

• Fixed supply: the above-ground stock grows slowly through mining, not by policy choice.
• No counterparty: gold is no one’s liability, so it carries no default or credit risk.
• No policy discretion: its value cannot be manipulated by adjusting interest rates or issuing more of it.

J.P. Morgan Global Research, in a note dated 9 June 2026, gave this property an institutional name.

J.P. Morgan describes gold as a “debasement hedge”: protection against the loss of currency purchasing power through inflation or currency debasement.

Mechanically, calculating a gold-denominated return is straightforward. You take the price of an asset and divide it by the price of gold at the start of a period, then repeat the calculation at the end, and compare the two ratios. If the asset rose in dollars but rose less than gold did, its value in gold terms fell.

At roughly $4,400 per troy ounce as of late September 2026, gold is an expensive ruler, and its scale matters. Even at the intra-year floor of $4,170/oz noted by J.P. Morgan, the baseline against which assets are measured stayed substantially elevated through 2026.

The choice of unit is the central editorial decision in any performance analysis. Switching to gold does not change what happened to your portfolio. It changes what the numbers reveal about it.

The numbers that change when you switch the ruler

Start with the NASDAQ 100, the index that houses the technology names most American investors have leaned on for growth. Over five years, its nominal return exceeded 100%, a doubling that felt, in dollar terms, like genuine wealth creation.

Now divide those returns by the price of gold at the start and end of the same window. Piepenberg’s calculation puts the result at a loss exceeding 20%. The index roughly doubled in dollars while losing a fifth of its value in gold.

The bond side is starker. U.S. Treasury bonds, the asset class held as the ballast in most balanced portfolios, produced an estimated gold-denominated net loss of around 90% over the 12 years preceding September 2026, according to the same analysis.

A 90% loss in gold-denominated terms over 12 years is the single most striking figure in this comparison, and it applies to the asset most investors treat as the safe part of their portfolio.

Before going further, the sourcing deserves plain acknowledgement. These specific calculations are Piepenberg’s own work. No third-party institution in the available research independently corroborates the exact figures, and the outcomes are sensitive to the start and end dates chosen. That does not invalidate the arithmetic, but it means the numbers are best read as illustrations of a mechanism rather than as audited results.

Here is how the two comparisons sit side by side.

The structural backdrop is what makes these outcomes plausible rather than freakish. With gross national debt at $40.10 trillion and an FY 2026 deficit of $1.8 trillion over just 10 months, the supply of dollars keeps expanding, and the ruler keeps shrinking.

What this means for you is direct. Two of the most widely held asset classes in American portfolios may have delivered far less real wealth accumulation than their nominal returns suggested. The gap between the two figures is, in effect, the cost of holding nominal assets through a period of currency erosion, and it is the difference between believing you built wealth and knowing you preserved purchasing power.

Why decades of fiscal expansion made this outcome structurally inevitable

The gold-denominated numbers are not an accident of bad luck or a cherry-picked window designed to embarrass equities. They are the logical output of a system operating exactly as its incentives dictate.

A government that runs persistent deficits has to finance them by issuing debt. Once the debt stock grows large enough, that debt has to be dealt with, and there are only three ways to do it: raise taxes, cut spending, or quietly erode the real burden of the debt through inflation and currency debasement. At $40 trillion in debt and deficits running near $1.8 trillion a year, the political appeal of the third option is considerable.

The mechanism runs in three steps:

1. Deficit spending requires the government to issue new debt.
2. Rising debt raises the fear that the currency will eventually be debased through inflation or financial repression.
3. Debasement erodes the real, purchasing-power return on nominal assets like bonds and cash.

J.P. Morgan frames this same dynamic through real yields, meaning interest rates after inflation. When real rates are suppressed to make a large debt load manageable, nominal returns on bonds and cash can look positive while their real purchasing-power returns quietly deteriorate. That deterioration is precisely what gold-denominated measurement captures.

The relationship between real interest rates and gold explains much of the mechanism at work here: when real yields are suppressed to make a large debt load manageable, gold tends to outperform nominal assets not because of speculative demand but because the opportunity cost of holding a non-yielding asset collapses alongside the real return on competing instruments.

The most telling signal comes from the institutions running the system. According to World Gold Council estimates cited by J.P. Morgan, central banks bought an estimated 244 tons of gold in Q1 2026, up from 208 tons in Q4 2025. The bodies responsible for managing fiat currencies are accumulating the one asset that hedges against fiat debasement, and that pattern tells you the risk described here is taken seriously at the highest levels of monetary management.

Historical episodes where the mechanism played out

The 1970s show the pattern in its purest form. Oil shocks, expansive fiscal policy, and loose monetary policy produced high inflation and deeply negative real interest rates, and gold rose sharply while bondholders and cash savers watched their real purchasing power drain away.

The post-2008 era rhymes with it. Massive quantitative easing and central-bank balance-sheet expansion revived fears of long-run dollar debasement, and gold ran into a bull market that peaked around 2011 as investors sought insurance against monetary excess.

In both episodes, the divergence between nominal and real returns was the whole story. Understanding the mechanism, rather than just the outcome, tells you whether today’s conditions look temporary or structural.

Where the gold-as-ruler argument has limits

The analysis so far builds a strong case, and a sharp reader should now be poking holes in it. Several of those holes are legitimate, and understanding them is what separates a useful lens from a misleading one.

Three criticisms carry the most weight:

• Sample-period sensitivity: gold-denominated comparisons swing dramatically with the choice of start and end dates, and a window that begins at a gold-price trough produces conclusions far more damning than one beginning at a peak.
• Yield-regime dependence: gold has no real yield, so in periods when interest-bearing assets offer rising real returns, equities and bonds can outperform gold in purchasing-power terms even as the gold-denominated calculation inverts.
• Liability mismatch: most American investors owe money and spend in dollars, not gold, so gold does not map onto their actual financial obligations the way a CPI-adjusted or liability-matched benchmark does.

J.P. Morgan is explicit on the yield point.

According to J.P. Morgan Global Research, gold “tends to perform poorly in markets where the yield on assets (like U.S. Treasuries or money market funds) is set to go up,” because it offers no real yield of its own.

The mainstream institutional position reflects this. Pension funds, endowments, and insurers report performance against policy portfolios and liability-related metrics, and they treat gold as a satellite allocation, an inflation hedge sitting on the side, rather than as the primary unit against which everything is judged.

Proponents have a counter, and it is not trivial. Piepenberg’s response is that fiat-based measurement is itself the source of the distortion, and that gold-denominated analysis is the thing that finally reveals the true scale of purchasing-power destruction the dollar figures conceal.

The gold vs equities long-term comparison shifts substantially once dividends are factored in, a counterpoint that matters when evaluating whether gold-denominated calculations capture the full return picture or selectively exclude income streams that bondholders and equity investors actually receive.

The practical read for you is neither to abandon dollar accounting nor to adopt gold as gospel. Treat gold-denominated analysis as a stress test, one that surfaces debasement risk nominal returns systematically hide, and lean on it hardest in high-debt, low-real-rate environments like the current one.

What the gold-denominated lens actually changes for U.S. investors in 2026

Pull the threads together and the conclusion is measured rather than dramatic. Gold-denominated measurement is not a replacement for conventional performance tracking. It is a supplementary lens, and its relevance rises when the structural conditions for currency erosion are most pronounced.

Right now, those conditions are unusually pronounced. Debt sits at $40 trillion, deficits run near $1.8 trillion a year, J.P. Morgan has documented the expectation that real yields may be suppressed to manage the debt load, and gold trades around $4,400/oz with renewed institutional and central-bank demand behind it.

The practical question after accepting this framework is how much weight gold deserves as a portfolio allocation, and 50 years of data on gold in a diversified portfolio show that the answer depends heavily on the real-rate regime and the fiscal backdrop investors are living through, not on a fixed percentage rule.

Three conditions that make gold-denominated analysis most relevant

You do not need to memorise a specific price or year to apply this framework. You need to watch for three structural triggers.

The first is debt scale, whether measured as an absolute figure or as a share of GDP, because a large debt burden creates the incentive to erode it. The second is deficit trajectory, since persistent and widening deficits keep expanding the supply of currency. The third is the real interest rate regime: when real rates are suppressed or falling, the ground is set for nominal returns to overstate real gains.

When all three are present together, as they are now, the gold-denominated lens is at its most informative.

The signal from the top of the system reinforces the point. According to World Gold Council data cited by J.P. Morgan, central banks lifted purchases to 244 tons in Q1 2026 from 208 tons in Q4 2025, and J.P. Morgan now uses the term “Debasement Trade” to describe this structural shift. When the largest actors in the monetary system are accumulating gold while running the fiscal deficits that create debasement risk, an investor who has never examined their portfolio through this lens has a concrete reason to start.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Past performance does not guarantee future results, and gold-denominated return calculations are the cited analyst’s own work and are subject to market conditions and various risk factors.

The framework is most valuable not as a retrospective indictment of past decisions but as a forward-looking diagnostic, a way to identify where conventional performance tracking is most likely to obscure real wealth erosion going forward.

Reading the scorecard correctly in a high-debt era

Dollar-denominated performance measurement is not wrong. It is incomplete when the unit of account is systematically losing value, and supplementing it with a gold-denominated calculation exposes the hidden cost of that erosion rather than replacing the conventional numbers.

Most investors will keep holding equity and bond portfolios priced in dollars and judged against dollar benchmarks, and there is no argument here that they should stop. The argument is that they should understand what their measuring instrument is not showing them.

With U.S. debt at $40.10 trillion and gold near $4,400/oz amid recovering institutional demand, the “Debasement Trade” framing J.P. Morgan now uses carries practical current weight, not merely historical interest.

If the fiscal conditions driving debasement risk are structural rather than cyclical, the relevance of this lens is not fading. The single change in habit worth adopting is simple: periodically check what your portfolio’s nominal gains look like against a gold-priced baseline, especially during periods of fiscal expansion or monetary accommodation. It requires no portfolio changes and produces far more honest data about whether real wealth is being preserved or quietly eroded.