The S&P 500 Is Not the Whole Market
While Everyone Was Buying the Index, Energy Was Quietly Rewriting the Five-Year Return Story
By George Hawkmont | Hawkmont Research Published: August 12, 2026
Table of Contents
The Consensus Assumption
The Five-Year Surprise
Why Energy Was Ignored
What the Market Missed
The S&P 500 Is Not "The Market"
Energy vs. the S&P 500, Beyond the Scoreboard
The Counterargument
The Real Question
Investment Implication
Conclusion
1. The Consensus Assumption
Buy the S&P 500 and hold it. It is the closest thing modern investing has to a default instruction, repeated in advisor decks, retirement plan defaults, and every explanation of long-term compounding. It is not wrong, exactly. Over long stretches of history, a diversified, low-cost, market-cap-weighted basket of large American companies has beaten most of the people who tried to outsmart it. That much is well established and Hawkmont has no interest in relitigating it.
What deserves scrutiny is the second, unspoken half of the instruction: that the S&P 500 is, by default, the correct and sufficient expression of "the market." That buying it is a neutral act rather than a specific and increasingly concentrated bet. That because it worked well for the last decade, the composition of that success is irrelevant to what comes next.
That assumption is worth testing against the data rather than accepting on reputation. Over the last five years, the index that most investors treat as the baseline, low-risk choice was not even the best-performing major asset class in U.S. equities. It was not close. An unglamorous, unloved, repeatedly-declared-dead sector quietly built a return profile that outpaced the index most people believe cannot be beaten.
This is not a call to abandon the S&P 500. It is a case for understanding what you actually own when you buy it, and for asking why the market's most repeated piece of advice has, for five years running, left one of its best-performing sectors on the table.
2. The Five-Year Surprise
Precision matters here, so the window is defined exactly: August 10, 2021 through August 10, 2026, a full five calendar years, with no cherry-picked start or end date designed to flatter either side. All figures below are total returns, meaning price appreciation plus dividends reinvested, unless explicitly labeled otherwise. Price return alone understates both series, but it understates energy by considerably more, since the sector's dividend and buyback yield has run well above the index average for most of the period.
The S&P 500 proxy used is SPY, the SPDR S&P 500 ETF Trust. The energy proxy is XLE, the Energy Select Sector SPDR Fund, which tracks the GICS Energy sector of the S&P 500, weighted toward integrated majors, exploration and production companies, and oilfield services. XLE is used rather than a narrower commodity or futures-based instrument because it isolates the equity return of energy companies, including their dividends, buybacks, and balance-sheet discipline, rather than the return of crude oil itself, which is the more relevant comparison for an equity allocator.
Nasdaq-100 exposure (QQQ) is included for context, since it represents the growth and mega-cap technology complex that has done most of the heavy lifting inside the S&P 500 itself.
Benchmark | Ticker | 5-Year Total Return | Annualized (CAGR) | Dividend Yield (current) |
S&P 500 | SPY | +86.8% | +13.3%/yr | ~1.0% |
Nasdaq-100 | QQQ | ~+90% | ~+13.8%/yr | ~0.6% |
Energy Sector | XLE | +190.6% | +23.8%/yr | ~2.4% |
Energy did not marginally outperform. It generated roughly 2.2 times the total return of the S&P 500 over five years, and it did so with a dividend yield more than double the index's, meaning income investors were paid more to hold the better-performing asset. That combination, higher total return and higher current income, is rare enough to warrant a second look at why it happened and why almost nobody was positioned for it going into the period.
The calendar-year breakdown is more instructive than the headline number, because it shows this was not one lucky year skewing a five-year average.
Year | S&P 500 (SPY) Total Return | Energy (XLE) Total Return |
2021 | +28.7% | +53.3% |
2022 | −18.2% | +64.3% |
2023 | +26.2% | −0.6% |
2024 | +24.9% | +5.6% |
2025 | +17.7% | +7.9% |
2026 YTD (through Aug 10) | +14.0% | +36.5% |
Notice the shape. Energy did its heaviest lifting in exactly the two years an investor would have most wanted a diversifying asset: 2021, on the post-pandemic reopening and inflation surge, and 2022, when the S&P 500 fell nearly 20 percent and energy rose more than 60 percent in the same twelve months. It then went quiet for two years while technology and AI-adjacent mega-caps carried the index, before reaccelerating sharply in 2026 alongside a renewed spike in oil prices tied to Middle East supply risk and tightening physical crude markets. That pattern, strength during equity drawdowns and dormancy during equity melt-ups, is closer to what investors say they want from a diversifier than almost anything else in the S&P 500's own sector lineup produced over the period.
3. Why Energy Was Ignored
None of this happened in the dark. The data was public the entire time. The reasons investors looked past it were structural, psychological, and in some cases institutionalized.
The first and largest reason is concentration in mega-cap technology. The AI infrastructure buildout that began in earnest in 2023 pulled an extraordinary share of incremental capital, narrative attention, and index performance into a handful of names. When the stocks doing the pulling also happen to be the largest weights in the index you already own, there is little visible incentive to look elsewhere. Outperformance became self-reinforcing: strong returns in mega-cap tech pushed those names to larger index weights, which mechanically increased the index's own exposure to their next move, which then attracted more passive flow.
That points to the second reason, which is passive investing's structural blindness to valuation and sector rotation. A dollar flowing into a target-date fund or a total-market index fund does not ask whether energy is cheap or technology is expensive. It buys the index as constructed, which means it buys more of whatever has already gone up. Passive flows are agnostic to price, and by 2021 through 2026 they had become a large enough share of total equity flow to meaningfully reinforce whatever trend was already in place, energy's neglect included.
Third, investor preference for growth over value did real work here. Energy is, almost by definition, a value and income sector: modest revenue growth, high current cash returns, low multiple. Technology and AI infrastructure names offered the opposite: high expected growth, low current income, high multiple. In a period defined by a generational technology narrative, capital chased the growth story almost reflexively, treating value characteristics as a consolation prize rather than a legitimate return driver in their own right.
Fourth, ESG-related capital constraints measurably reduced the pool of institutional money willing to hold energy equities at all, particularly upstream exploration and production names, through large parts of the 2020s. Endowments, pension funds, and European asset managers operating under exclusionary mandates were structurally underweight or entirely absent from the sector for years, regardless of valuation or fundamentals. Even as some of those mandates have since softened, the underweight built up during that period has not fully unwound.
Fourth, ESG-related capital constraints measurably reduced the pool of institutional money willing to hold energy equities at all, particularly upstream exploration and production names, through large parts of the 2020s. Endowments, pension funds, and European asset managers operating under exclusionary mandates were structurally underweight or entirely absent from the sector for years, regardless of valuation or fundamentals. Even as some of those mandates have since softened, the underweight built up during that period has not fully unwound.
Sixth, and perhaps most consequential, was a widely held assumption that fossil-fuel demand was in structural, permanent decline, being displaced by electrification, renewables, and efficiency gains at a pace fast enough to make new hydrocarbon investment a value trap. That assumption shaped capital allocation decisions across the entire energy value chain, not just among portfolio managers but inside the energy companies themselves.
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4. What the Market Missed
That last point deserves the most attention, because it is where the thesis and the fundamentals actually meet.
The demand-decline assumption, whatever its long-run validity, led to a multi-year period of underinvestment in oil and gas production capacity. Capital discipline imposed by shareholders after the 2014 to 2020 downturn, combined with reduced access to capital markets for many operators, meant less drilling, less refining capacity, and less midstream buildout than a naive extrapolation of demand growth would have called for. Supply grew more slowly than it otherwise would have across much of the 2020s.
Layered on top of underinvestment was geopolitical risk that repeatedly disrupted physical supply: sanctions regimes, OPEC+ production discipline, and, most acutely in 2026, escalating conflict involving Iran that pushed Brent crude toward the $100 per barrel level and periodically threatened flows through the Strait of Hormuz. Markets that are already supply-constrained respond to geopolitical shocks with outsized price moves, and that is broadly what occurred.
The result was a pricing environment considerably more favorable to producers than the pessimistic demand narrative implied, arriving at precisely the moment energy companies had rebuilt their balance sheets. Net debt across the major integrated and E&P names fell substantially from the leverage-heavy 2010s. Free cash flow generation became the sector's defining characteristic rather than an afterthought, with companies prioritizing shareholder returns, dividends and buybacks, over the growth-at-any-cost drilling programs that defined the shale boom's first decade. Capital discipline, once a slogan, became a measurable and durable behavior across the sector's largest names.
This is the quiet mechanical story behind the return numbers in Section 2. It was not a single catalyst. It was underinvestment meeting geopolitical tightness meeting a sector that had, out of necessity, become one of the most shareholder-friendly cohorts in the entire index, all while trading at a valuation that priced in almost none of it.
5. The S&P 500 Is Not "The Market"
This is the part of the pitch that gets skipped. "Just buy the index" implies broad, diversified exposure to the American economy. That description has become less accurate with each passing year of this cycle.
As of 2026, the ten largest companies in the S&P 500 account for somewhere in the range of 35 to 40 percent of the index's total weight, depending on the exact measurement date, up from a range that hovered around 18 to 25 percent for most of the period from 1990 through 2015. That is not a modest drift. It is close to a doubling of concentration in roughly a decade, driven almost entirely by mega-cap technology and AI-adjacent names.
Energy, by contrast, remains a small fraction of the index by weight, having collapsed from more than 15 percent at its 2008 peak to roughly 2.5 percent by 2020, and having only partially recovered since. An investor who buys the S&P 500 today is, in practical terms, allocating the large majority of their "diversified" equity exposure to a small cluster of technology and AI infrastructure businesses, and a comparatively trivial amount to the sector that just delivered the best five-year total return in the index.
None of this means the concentration is irrational. The top ten companies also generate a large and growing share of the index's actual earnings, not just its market value, so the weighting is not pure narrative. But it does mean that passive S&P 500 investors are, whether they realize it or not, making a concentrated bet on the continued dominance of a small number of mega-cap growth businesses, layered under the comforting label of "diversified index investing." That is a legitimate bet. It is not a neutral one.
6. Energy vs. the S&P 500, Beyond the Scoreboard
Returns alone do not tell an allocator what they were being compensated to hold. Valuation, cash generation, and volatility tell that part of the story.
Metric | S&P 500 (Index) | Energy Sector (XLE) |
Forward P/E | ~20.0x | ~13.1x |
Vs. own 10-year average | Above average | Below historical range |
Dividend yield | ~1.0% | ~2.4% |
2026 sector standing | N/A | Lowest forward P/E of all 11 GICS sectors, alongside Financials |
5-yr annualized volatility character | Lower, mega-cap driven | Higher, commodity-driven |
Worst single-year total return in window | −18.2% (2022) | −0.6% (2023) |
Best single-year total return in window | +28.7% (2021) | +64.3% (2022) |
The S&P 500 currently trades at a forward earnings multiple above both its five-year and ten-year averages, a premium justified, in theory, by the earnings growth expectations attached to its largest constituents. Energy trades at the cheapest forward multiple of any sector in the index, a discount that reflects the market's continued skepticism about the durability of its cash flows rather than any current weakness in those cash flows themselves.
The dividend and buyback picture reinforces the valuation gap. Energy's current yield runs more than double the index average, and that yield has been backed by genuine free cash flow rather than balance-sheet financial engineering, a meaningful distinction after a decade in which several high-multiple sectors funded shareholder returns partly through debt issuance.
On correlation, energy's behavior across the five-year window was closer to a genuine diversifier than almost any other S&P 500 sector, delivering its strongest year in 2022 precisely when the broad index posted its weakest. That is a favorable portfolio-construction property independent of the absolute return numbers, and it is the kind of property that gets lost entirely when investors evaluate sectors purely on trailing total return.
What investors were actually being paid to own energy over this period was a below-average multiple, an above-average and cash-backed income stream, and a return stream that moved differently from the rest of their portfolio at the moments diversification mattered most. What they were paying up for in the S&P 500's largest constituents was growth durability that has, so far, largely delivered, but at a valuation that leaves considerably less room for error.
7. The Counterargument
None of the above should be mistaken for a permanent bull case on energy, and the strongest version of the bear argument deserves a fair hearing.
Oil is a cyclical, mean-reverting commodity, and energy equities inherit that cyclicality whether or not their balance sheets have improved. The same geopolitical premium currently embedded in crude prices, tied to conflict involving Iran and tightness around the Strait of Hormuz, can unwind quickly and without warning if a resolution or de-escalation materializes. A meaningful share of energy's 2026 outperformance is plausibly event-driven rather than structural, and geopolitical risk premia are notoriously difficult to hold as a long-term thesis, because by definition they are supposed to resolve.
Electric vehicle adoption, while its pace has been inconsistent across regions and slower than some forecasts assumed earlier in the decade, continues to erode transportation-related oil demand growth over the long run, particularly outside the United States. Renewable energy buildout, battery storage costs, and grid electrification continue to expand, and even the AI-driven electricity demand growth that has become a bullish talking point for energy bulls is, in significant part, being met with natural gas, nuclear, and renewables rather than crude oil specifically, meaning the read-through to oil demand is less direct than headlines suggest.
Commodity price risk cuts in both directions. The capital discipline that improved energy balance sheets also means the sector is structurally more exposed to price than to volume, so a sustained fall in crude prices, whether from demand destruction, a supply response from OPEC+ unwinding production cuts, or a genuine resolution of current geopolitical tensions, would compress free cash flow and dividend capacity quickly. Political and regulatory risk remains real and bidirectional: energy has benefited from a policy environment more permissive toward domestic production in the current cycle than in the prior one, and that stance is not guaranteed to persist across future administrations or global regulatory regimes.
Finally, there is a legitimate oversupply risk on a multi-year horizon. Elevated prices are, historically, the best cure for elevated prices, because they eventually incentivize the exact new supply investment that has been suppressed over the past several years. If underinvestment reverses meaningfully, the supply-constrained backdrop that has supported energy's re-rating could fade well before any structural demand story does.
Hawkmont takes this case seriously. Energy's outperformance over this specific five-year window reflects a genuine combination of structural underinvestment and cyclical, geopolitically driven price strength, and untangling exactly how much of each is not possible with precision in real time. Investors should not treat the last five years as proof that energy has permanently re-rated into a structurally cheap growth sector. It has not. It has been a supply-constrained, undervalued, shareholder-friendly cyclical sector that the market mispriced for a stretch of years. Those are different claims, and only one of them is durable by construction.
8. The Real Question
The right question is not "should I have owned energy instead of the S&P 500 for the last five years." That question is already answered and unrecoverable. The right question is: what if the next five years look nothing like the last five?
That question cuts against both sides of this article equally. It cuts against the reflexive S&P 500 maximalist, because it means today's forward P/E of roughly 20 times, sitting above both the five- and ten-year averages, embeds less margin for error than the multiple investors were implicitly paying five years ago, and mega-cap concentration means more of that risk sits in fewer names than at almost any point in the index's modern history. It also cuts against a reflexive rotation into energy, because a sector whose recent strength is partly geopolitical and partly a function of temporarily constrained supply is, by its own bull case, not supposed to stay constrained forever.
The discipline this argues for is thinking in terms of valuation, cash flow, and starting multiples rather than extrapolating whichever asset produced the best trailing return. Five years of outperformance tells you what happened. It tells you comparatively little about what is priced in today, which is the only thing that actually determines forward return.
9. Investment Implication
Hawkmont is not recommending that investors sell the S&P 500 and rotate into energy. That would be trading one form of concentrated, trend-extrapolating bet for another, and it would ignore the legitimate bear case laid out above.
The more defensible lesson is diversification across valuation regimes, not just across labeled asset classes. A portfolio built entirely around mega-cap growth at an above-average multiple, and a portfolio built entirely around a single cyclical commodity-linked sector, carry different but comparably concentrated risks. The most useful role for energy inside a diversified equity allocation is not as a replacement for broad market exposure, but as a deliberate, sized position that offers cash-flow characteristics, current income, and a demonstrated tendency to diverge from mega-cap growth at exactly the moments that diversification is worth something. The 2022 calendar year in Section 2 is the clearest illustration of that property inside this specific window, and it is the property, not the trailing return figure, that should drive sizing.
What would invalidate this thesis going forward is fairly specific and worth stating plainly. A durable resolution of Middle East supply tensions that removes the current geopolitical premium from crude prices, combined with a supply response as underinvestment reverses and drilling activity reaccelerates, would compress the free-cash-flow and valuation advantage that energy currently offers. A faster-than-expected acceleration in EV penetration and grid electrification that meaningfully impairs long-run oil demand growth would undercut the structural half of the argument. And a continuation of the current environment, geopolitical tightness plus underinvestment plus disciplined capital returns, would argue for energy remaining a legitimate, appropriately sized component of a diversified book rather than a rounding error inside a mega-cap-dominated index fund.
10. Final Word
Buying and holding the S&P 500 is not bad advice. It is incomplete advice, delivered with a confidence that the last five years of sector-level data does not fully support. The index that most investors treat as the default, low-risk choice for long-term compounding was outrun by more than two to one on a total return basis by a sector most of the same investors had written off as structurally dying.
That is not an argument for chasing energy now, after the move. It is an argument for treating "the market" as the constructed, concentration-heavy, valuation-specific bet that it currently is, rather than as a synonym for diversification itself. The next five years will reward whoever is paying attention to starting multiples and cash flows, not whoever is most confident in the last five years' winner. Hawkmont's business is finding the gap between those two positions before consensus does. This one has been sitting in plain sight, trading at the cheapest multiple in the index, the entire time.
Hawkmont Research is an independent, conflict-free equity and macro research publication. Hawkmont Research does not hold positions in, and has not received compensation from, any company or fund mentioned in this report. This report is provided for informational purposes only and does not constitute investment advice or a recommendation to buy or sell any security. All performance figures are historical, sourced from publicly available fund and index data as of the dates indicated, and are presented on a total return basis (dividends reinvested) unless otherwise noted. Past performance is not indicative of future results. Forward-looking statements regarding sector fundamentals, valuation, and commodity markets involve risks and uncertainties that may cause actual outcomes to differ materially. Readers should conduct their own due diligence and consult a licensed financial advisor before making investment decisions.
