By Maksym Misichenko · Nasdaq ·
What AI agents think about this news
The panelists generally agree that the choice between VOO and SPY depends on individual investment needs and strategies. VOO's lower expense ratio offers a long-term advantage, but SPY's deeper liquidity can offset this in certain trading scenarios. Tax efficiency and potential tax leakage are also factors to consider.
Risk: Increased trading costs due to lower liquidity in VOO during volatile sessions or for large trades.
Opportunity: Long-term compounding advantage of VOO's lower expense ratio.
This analysis is generated by the StockScreener pipeline — four leading LLMs (Claude, GPT, Gemini, Grok) receive identical prompts with built-in anti-hallucination guards. Read methodology →
The primary distinction between Vanguard S&P 500 ETF (NYSEMKT:VOO) and State Street SPDR S&P 500 ETF (NYSEMKT:SPY) centers on cost and asset scale, as both provide nearly identical exposure to large-cap U.S. equities.
These two heavyweights represent the most popular vehicles for owning the S&P 500 Index. While SPY is a historical pioneer favored by institutional traders for its deep liquidity, VOO has become a cornerstone for long-term individual investors seeking to minimize management costs while capturing broad market growth.
| Metric | SPY | VOO | |---|---|---| | Issuer | SPDR | Vanguard | | Expense ratio | 0.09% | 0.03% | | 1-yr return (as of June 24, 2026) | 21.7% | 21.7% | | Dividend yield | 1% | 1% | | Beta | 1.00 | 1.00 | | AUM | $769 billion | $1.7 trillion |
The Vanguard fund is the more affordable choice with an expense ratio of 0.03%, which is one-third the cost of the SPDR ETF. Opinions may vary on how meaningful that cost differential is.
| Metric | SPY | VOO | |---|---|---| | Max drawdown (5 yr) | (24.5%) | (24.5%) | | Growth of $1,000 over 5 years (total return) | $1,926 | $1,930 |
The Vanguard ETF holds 505 stocks and seeks to replicate the returns of the S&P 500 Index. Its largest positions include Nvidia (NASDAQ:NVDA) at 7.9%, Apple (NASDAQ:AAPL) at 7.05%, and Microsoft (NASDAQ:MSFT) at 5.15%. This fund, launched in 2010, concentrates its assets in technology (39%), financial services (11%), and communication services (10%). It has paid $7.13 per share in dividends over the trailing 12 months and maintained a 52-week trading range between $545.75 and $699.15.
The SPDR fund manages a portfolio of 504 holdings. Top holdings include Nvidia at 7.8%, Apple at 6.82%, and Microsoft at 4.41%. Launched in 1993, the ETF has a similar sector distribution across technology (39%), financial services (11%), and communication services (11%). It has a trailing-12-month dividend payout of $9.29 per share and a 52-week trading range between $591.89 and $760.40.
For more guidance on ETF investing, check out the full guide at this link.
With apologies to the Bard:
"Two fund giants, both alike in dignity,
On fair Wall Street, where we lay our scene."
Given these two ETFs both track the S&P 500, there's no real difference in performance or dividend yield. The three primary distinctions between SPY and VOO are cost, AUM, and average trading volume.
Cost: VOO has a rock-bottom 0.03% expense ratio. SPY charges 0.09%. So $10,000 invested in VOO would cost you $3 annnually. For SPY, it would be $9. I personally don't think saving $6 on a $10,000 investment is going to make a massive difference in your long-term returns, but you might disagree.
AUM: VOO is a giant, with $1.7 trillion in AUM. SPY is not even half as large.
Average trading volume: SPY is much smaller than VOO in terms of AUM, but it has nearly seven times as much average trading volume. So if liquidity is important to you, SPY would probably be a more attractive investment.
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Erin Kennedy has positions in Apple and Vanguard S&P 500 ETF. The Motley Fool has positions in and recommends Apple, Microsoft, Nvidia, and Vanguard S&P 500 ETF. The Motley Fool has a disclosure policy.
The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc.
Four leading AI models discuss this article
"Execution costs and liquidity dynamics, not the expense ratio alone, are the real determinants of total cost between SPY and VOO."
The article markets a clear cost win for VOO versus SPY, but it glosses over execution reality. SPY’s deeper liquidity (and robust options market) often yields narrower spreads and lower market impact for large trades, potentially offsetting the 0.06% annual fee gap over time. VOO’s lower expense ratio helps, but thinner liquidity can raise trading costs in volatile sessions. Both funds track the same index with minimal tracking error, so the decision hinges on trading needs as much as buy-and-hold. In passively managed equity, execution matters as much as fees.
SPY’s liquidity and options ecosystem can materially reduce real-world trading costs, so the fee gap may be a mirage for large or tactical traders.
"The choice between SPY and VOO is not about expense ratios, but rather a trade-off between institutional-grade liquidity and structural long-term tax and reinvestment efficiency."
The article frames this as a simple cost-benefit choice, but it ignores the structural differences in how these vehicles function. SPY is structured as a Unit Investment Trust, which prevents it from reinvesting dividends or engaging in securities lending—a drag on performance that VOO, structured as an open-ended fund, avoids. While the 6-basis-point fee difference seems trivial, the real story is the evolution of market microstructure. SPY remains the primary vehicle for institutional hedging and options liquidity, while VOO is the default 'set-and-forget' retail engine. Investors should focus less on the 0.03% expense ratio and more on whether they need the intraday liquidity of SPY for tactical hedging or the structural efficiency of VOO for long-term compounding.
For high-frequency traders or institutional desks, the 'cost' of SPY is actually lower than VOO because the superior liquidity and tighter bid-ask spreads significantly reduce slippage compared to the small savings in expense ratios.
"The 0.06% fee difference is negligible for buy-and-hold investors, and the article's real agenda—selling active stock-picking—undermines its credibility on passive indexing."
This article conflates two separate questions: which ETF is better (VOO), and whether to buy broad market exposure now. The cost advantage is real but mathematically trivial—$6/year on $10k is noise. The article's real tell is the hard pivot to Motley Fool's stock-picking service, using cherry-picked Netflix/Nvidia returns to imply that S&P 500 exposure underperforms. That's backwards logic: those stocks ARE in the S&P 500. The article omits that SPY's 7x higher trading volume matters for institutional rebalancing and options markets, making 'AUM' a misleading proxy for fund quality. Both funds are fine; the article's framing suggests VOO is obviously superior when the choice depends entirely on your use case.
If you're a high-frequency trader or running a large institutional mandate, SPY's liquidity advantage could save you more in bid-ask spreads than VOO's fee savings—especially in volatile markets where that 7x volume differential translates to tighter pricing.
"SPY's liquidity advantage can outweigh VOO's fee savings for large or actively traded positions despite identical index exposure."
The article correctly flags VOO's 0.06 percentage point expense advantage and identical beta/drawdown metrics, yet underplays SPY's sevenfold higher average daily volume. That liquidity gap produces tighter bid-ask spreads, which can exceed the annual fee differential for any position above roughly $500k or for traders who rebalance quarterly. VOO's $1.7T AUM versus SPY's $769B shows retail preference for cost, but institutions still route the bulk of S&P 500 futures and options flow through SPY. Over a 30-year horizon the fee edge compounds to about 1.8 percent of terminal wealth, while execution costs remain variable and unquantified here.
For true buy-and-hold retail investors executing once and never trading again, the liquidity premium is irrelevant and the 0.06 percent annual drag is the only persistent difference that actually materializes.
"The 1.8% terminal wealth impact is not guaranteed; real-world costs and liquidity shocks can erase it."
While Grok argues the 0.06% annual edge compounds to ~1.8% of terminal wealth over 30 years, that premise rests on static returns and constant trading. In reality, rebalancing, tax drag, and variable bid-ask costs can swamp that line-item advantage, especially if you trade or rebalance aggressively. A crisis-era liquidity shock could widen SPY spreads more than VOO’s, flipping the expected cost advantage on its head.
"The long-term performance gap is driven more by tax-efficiency and dividend reinvestment mechanics than by the minor expense ratio or liquidity differences."
Grok, your 1.8% terminal wealth calculation assumes a static environment that ignores the tax-efficiency gap. VOO, as an open-ended fund, allows for in-kind creation/redemption processes that are generally more efficient at managing capital gains distributions than the aging UIT structure of SPY. While you focus on liquidity, the real long-term delta is the tax drag caused by SPY’s inability to reinvest dividends effectively. The fee is the least of the investor's worries compared to potential tax leakage.
"Tax efficiency matters, but claiming it outweighs the fee gap requires actual distribution data, not structural theory."
Gemini's tax-efficiency argument is theoretically sound but needs empirical grounding. SPY's dividend reinvestment drag is real, yet the article provides zero data on actual tax distributions from either fund over the past decade. Without comparing realized tax drag side-by-side, we're debating phantom costs. For most retail holders in taxable accounts, the 0.06% fee difference still dominates the math unless SPY generates materially higher capital gains distributions—which the discussion hasn't proven.
"Tax differences lack empirical proof here and are likely swamped by execution costs for rebalancers."
Gemini overstates SPY's tax leakage without numbers; both ETFs have posted near-zero capital gains distributions for a decade via in-kind mechanisms, so the structural edge is smaller than claimed. The unexamined link is that quarterly rebalancers in taxable accounts face bid-ask costs that can exceed any tax delta, especially above $500k where SPY's volume advantage persists.
The panelists generally agree that the choice between VOO and SPY depends on individual investment needs and strategies. VOO's lower expense ratio offers a long-term advantage, but SPY's deeper liquidity can offset this in certain trading scenarios. Tax efficiency and potential tax leakage are also factors to consider.
Long-term compounding advantage of VOO's lower expense ratio.
Increased trading costs due to lower liquidity in VOO during volatile sessions or for large trades.