Are SPLG and SPY the same investment?

Yes and no. Both track the S&P 500 index and hold the same 500+ companies at the same market-cap weights. However, SPY is a unit investment trust (UIT) while SPLG is an open-end ETF — creating minor structural differences in dividend handling and index tracking. For practical purposes, their performance is nearly identical.

Why does SPY exist if SPLG is cheaper?

SPY was launched in 1993 as the first US ETF and became the world's most liquid equity instrument before cheaper alternatives existed. Its liquidity is now self-reinforcing — institutions and market makers depend on SPY's options market depth. SPY's expense ratio hasn't been cut because institutions pay for liquidity, not cost. Long-term retail investors should choose SPLG, VOO, or IVV instead.

What's the difference between SPLG, VOO, and IVV?

SPLG (State Street), VOO (Vanguard), and IVV (iShares) all track the S&P 500 at 0.02–0.03% expense ratios. They are functionally equivalent for long-term buy-and-hold investing. Minor differences: VOO and IVV tend to have slightly better dividend reinvestment mechanics as open-end ETFs. Any of the three is an excellent choice for S&P 500 core portfolio exposure.

Data as of: June 15, 2026

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SPLG

SPDR Portfolio S&P 500 ETF · Broad Market ETF

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SPY

SPDR S&P 500 ETF Trust · Broad Market ETF

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Comparison scoreboard

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Quick take

SPLG vs SPY ETF Comparison: AI Score, Valuation, Performance and Upside

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SPLG and SPY track the identical S&P 500 index and hold the same securities. The only meaningful differences are: expense ratio (SPLG 0.02% vs SPY 0.09%), options market liquidity (SPY dominates), and share price (SPLG ~$60 vs SPY ~$600). For most long-term retail investors, SPLG is the better choice — same index at lower cost. SPY's higher expense ratio is justified only for institutional or options-focused investors needing maximum liquidity.

SPLG vs SPY — two ETFs tracking the same S&P 500 index from the same fund family (State Street), with SPLG providing 0.02% expense ratio for cost-conscious long-term investors and SPY providing 0.09% expense ratio with the world's most liquid equity ETF for institutional and options market participants.

Normalized 1Y performance

SPLG

SPY

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Recent returns

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Analyst price targets & sentiment

Human Wall Street analysts' price targets, typically implying a ~12-month view — a separate signal from this site's own AI Prediction Signal further down the page, which is a 5-/30-day machine-learning forecast based on price history alone.

SPLG

Price target data unavailable

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SPY

Price target data unavailable

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Who should consider this stock?

SPLG may suit investors who:

prefer the lower-cost S&P 500 ETF from State Street at 0.02% expense ratio — identical index exposure to SPY at 0.07% lower annual cost that compounds significantly over decades
value lower share price (~$60+) for more granular position sizing without requiring fractional shares for small regular investments
want the same S&P 500 exposure as SPY without paying for institutional-grade options liquidity they don't need
are comfortable with lower options market liquidity and thinner trading volume vs SPY for buy-and-hold investing

SPY may suit investors who:

need the world's most liquid equity ETF options market for covered call strategies, protective puts, collar hedging, or institutional derivative overlays
make large institutional trades where SPY's narrower bid-ask spreads and deeper liquidity pool reduce transaction costs vs thin alternatives
want the original S&P 500 ETF with the longest track record and universal recognition in financial market discourse
are comfortable with the 0.07% higher expense ratio knowing they are paying for institutional-grade liquidity that benefits their specific investment strategy

Performance & AI score

Performance & AI score
Metric	SPLG	SPY
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Valuation & upside potential

Valuation & upside potential
Metric	SPLG	SPY
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Growth, profitability & risk

Growth, profitability & risk
Metric	SPLG	SPY
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Drawdown & downside risk

Lower drawdown and smaller single-period drops generally indicate a smoother ride, though they do not guarantee lower future risk.

1Y risk snapshot

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5Y risk snapshot

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10Y risk snapshot

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Performance metrics by period

Performance metrics by period
Period	Metric	SPLG	SPY
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AI Prediction Signali

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Next 5 trading days

SPLG

+2.8%BUY

SPY

+1.1%HOLD

Next 30 trading days

SPLG

+6.4%BUY

SPY

+3.2%HOLD

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Business comparison

Business comparison
Category	SPLG	SPY
Company	SPDR Portfolio S&P 500 ETF	SPDR S&P 500 ETF Trust
Sector	Broad Market ETF	Broad Market ETF
Industry	N/A	N/A
Core business	SPLG is State Street's lower-cost S&P 500 ETF, launched as an alternative to SPY for longer-term investors. SPLG tracks the S&P 500 index with a 0.02% expense ratio — matching VOO (Vanguard) and IVV (iShares) on cost, while SPY costs 0.09%. SPLG holds the same 500+ companies as SPY, weighted by market capitalization, including Apple, Microsoft, Nvidia, Amazon, Alphabet, Meta, Tesla, and Berkshire Hathaway. SPLG has a lower share price (~$60+) vs SPY (~$600+), making it more accessible for investors with limited capital or fractional shares.	SPY is the world's largest and most traded ETF by volume — the original S&P 500 ETF launched in 1993. SPY tracks the S&P 500 with 0.09% expense ratio. SPY's size (~$550B in assets) and daily trading volume create the world's most liquid equity ETF — essential for institutional investors executing large trades, running options strategies, or needing immediate market access. SPY's options market is the most liquid equity derivative in the world — used globally for hedging, income generation, and tactical positioning.
Investor focus	Investors should evaluate SPLG vs SPY on: expense ratio difference, share price accessibility, and whether institutional-grade options liquidity (SPY) is needed.	SPY is primarily used by institutional investors, options traders, and tactical allocators requiring maximum liquidity. Long-term retail investors are better served by VOO, IVV, or SPLG at lower cost.

SPLG strengths

0.02% expense ratio matches the cheapest S&P 500 ETFs: SPLG's annual cost is 0.07% less than SPY — over 30 years, this compounds to meaningful savings
Same S&P 500 index as SPY: SPLG holds identical underlying securities to SPY — same market exposure, same dividend treatment, same index methodology
Lower share price increases accessibility: SPLG's ~$60+ share price vs SPY's ~$600+ makes fractional-share investing unnecessary for building full-share positions

SPY strengths

Most liquid equity ETF in the world: SPY's $20–50B+ daily trading volume and world's most liquid options market make it irreplaceable for institutional and options-based strategies
30+ year track record: SPY is the original S&P 500 ETF with a 1993 inception — the longest track record in index ETF investing
Institutional standard: S&P 500 exposure via SPY is the default benchmark instrument for portfolio managers, hedge funds, and market makers globally

Risks to watch — SPLG

Lower options market liquidity than SPY: SPLG's options market is thin — investors who hedge or implement covered call strategies should use SPY instead
Lower trading volume than SPY: for large institutional trades, SPY's tighter bid-ask spreads and larger liquidity pool provide better execution
SPLG is less widely known: financial advisors and 401k plan menus may default to SPY — investors may not be offered SPLG as an option

Risks to watch — SPY

0.09% expense ratio is higher than alternatives: over 30 years, SPY's expense ratio costs significantly more than SPLG/VOO/IVV at 0.02–0.03%
Long-term retail investors are paying more for liquidity they don't need: most individual investors don't need SPY's options market depth — they'd be better served by cheaper alternatives
Unit investment trust structure vs ETF structure: SPY is a UIT (must reinvest dividends at quarter-end rather than immediately) which can create minor tracking error differences vs open-end ETF alternatives

Frequently asked questions

For most long-term investors, SPLG is the better choice — same S&P 500 index at 0.02% expense ratio vs SPY's 0.09%. The 0.07% annual cost difference compounds to significant savings over decades. SPY makes sense only if you use equity options (covered calls, protective puts) where SPY's world-leading options market depth provides better execution than SPLG.

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