SPY vs SPYX

Key Takeaways

• SPY provides complete large-cap U.S. equity exposure through the S&P 500 Index, while SPYX tracks the same universe with fossil-fuel-reserve owners screened out.
• The two funds share nearly identical top holdings and technology-heavy sector profiles, so the core difference is an exclusion screen rather than a different investment strategy.
• SPY carries a materially lower expense ratio (0.09%) than SPYX (0.20%), a cost advantage that compounds over time.
• SPYX removes most traditional energy producers, tilting its relative positioning toward technology and growth while reducing direct fossil-fuel exposure.
• SPY offers deeper liquidity and broader diversification, including an energy sleeve that can act as an inflation and geopolitical hedge.
• Tickeron AI Verdict: SPY — lower cost, superior liquidity, and full-market diversification make it the structurally stronger choice for most investors.

Introduction

Investors weighing core U.S. equity exposure increasingly compare two closely related but meaningfully different exchange-traded funds (ETFs): the SPDR S&P 500 ETF Trust (SPY) and the SPDR S&P 500 Fossil Fuel Reserves Free ETF (SPYX). Both are issued by State Street Global Advisors and both track large-cap U.S. benchmarks, yet they serve distinct investor goals. This ETF comparison matters right now because sustainable-investing screens, energy-market volatility, and concentration in a handful of mega-cap technology names have made the choice between full-market exposure and a fossil-fuel-free tilt a central positioning decision. Understanding their structural differences in index construction, cost, sector exposure, and liquidity helps investors align fund selection with both financial objectives and values.

SPDR S&P 500 ETF Trust (SPY) Overview

SPY is the oldest and most heavily traded U.S.-listed ETF, launched in 1993. It is a passively managed fund that seeks to replicate the price and yield performance of the S&P 500 Index, a benchmark of roughly 500 large-cap U.S. companies selected by an index committee to represent the domestic equity market. The fund typically holds about 505 securities, with the top 10 positions representing roughly 38% of assets.

Leading holdings include NVDA, AAPL, MSFT, AMZN, GOOGL, AVGO, GOOG, META, TSLA, and BRK-B. Information technology is the dominant sector at roughly 40% of the portfolio, followed by financials, healthcare, consumer discretionary, communication services, and industrials. Energy represents about 3%–4% of assets.

SPY carries a net expense ratio of 0.0945%, among the lowest in its category. A distinctive structural feature is that it is organized as a unit investment trust (UIT), an older legal structure that fully replicates its index but cannot reinvest dividends between distributions or engage in securities lending. Its enormous assets under management (AUM) and trading volume give it exceptional liquidity and narrow bid-ask spreads.

SPDR S&P 500 Fossil Fuel Reserves Free ETF (SPYX) Overview

SPYX seeks to track the S&P 500 Fossil Fuel Reserves Free Index, which measures the performance of companies in the S&P 500 that do not own fossil-fuel reserves. Launched in November 2015, it is a passively managed fund that screens out firms with direct ownership of oil, gas, or coal reserves while retaining companies that consume fossil fuels, such as utilities and airlines. The fund typically holds around 490 securities.

Its top holdings closely mirror the broad market, including NVDA, AAPL, MSFT, AMZN, GOOGL, AVGO, GOOG, META, TSLA, and BRK-B. Sector allocation is similarly technology-dominated at roughly 38%–39%, with the key difference in energy, which falls to about 1.2% of assets versus roughly 3.4% for SPY.

SPYX charges a net expense ratio of 0.20%, higher than SPY but still competitive within the socially screened category. As a conventional open-end fund within the SPDR Series Trust, it can reinvest dividends and engage in securities lending, though it has substantially smaller AUM and trading volume than SPY.

Industry and Thematic Backdrop

Both funds operate within the same large-cap U.S. equity ecosystem, where performance has been dominated by a small group of mega-cap technology and communication-services companies. Artificial-intelligence infrastructure spending, semiconductor demand, and cloud-computing growth remain the primary thematic drivers, concentrating returns in names such as NVDA and MSFT.

On the macro side, inflation trends, Federal Reserve interest-rate policy, and geopolitical energy supply disruptions have kept energy prices volatile. This creates a meaningful divergence: SPY retains an energy sleeve that can benefit from commodity strength, while SPYX largely forfeits that exposure in exchange for a cleaner environmental footprint. Meanwhile, rising regulatory scrutiny of environmental, social, and governance (ESG) labeling has increased demand for transparent exclusion strategies, supporting SPYX's relevance among values-driven allocators.

Performance and Positioning Comparison

Because the two funds share virtually identical top holdings and sector weightings, their fund performance has historically tracked closely, with divergence concentrated in energy-linked periods. In recent weeks and months, when energy prices rose on supply concerns, SPY's fuller sector exposure provided a modest cushion relative to SPYX. Conversely, during growth-led rallies driven by technology earnings cycles, SPYX's slightly higher growth tilt has occasionally allowed it to edge ahead.

From a relative positioning standpoint, SPY offers broader diversification and lower tracking-cost drag, while SPYX trades some of that breadth for sustainability alignment. Volatility levels are nearly identical given the heavy overlap, but SPY's superior liquidity generally produces tighter spreads and more efficient execution, a tangible advantage for institutions and active traders alike.

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Tickeron AI Verdict

Based on observable structural factors, Tickeron's AI would currently favor SPY over SPYX. The core rationale is cost and liquidity efficiency: SPY's 0.09% expense ratio is less than half that of SPYX, and its far deeper trading volume and AUM support tighter spreads and better execution. While both funds carry near-identical mega-cap technology concentration, SPY's complete S&P 500 coverage preserves an energy component that can serve as a diversification and inflation hedge. For investors who do not require a fossil-fuel exclusion, SPY is the more cost-efficient, liquid, and structurally complete vehicle; SPYX remains the appropriate choice specifically for those prioritizing a fossil-fuel-free mandate.

Disclaimer

The information on this webpage is provided for general informational and educational purposes only and is not intended as investment advice, a recommendation to purchase or sell any security, or an offer or solicitation related to investments. It does not consider your personal financial situation, goals, or risk profile, and all investing carries inherent risks, including the possibility of losing your entire investment. For more details, please review our full disclaimer.

Disclaimers and Limitations