Leveraged S&P 500 ETF's Million-Dollar Promise Comes With Steep Risks

ProShares Ultra S&P 500 ($SSO) presents a tantalizing investment thesis: a $10,000 initial investment could theoretically grow to $1 million over 35 years based on the fund's 14.5% average annual returns accumulated over nearly two decades. Yet this seemingly attractive narrative masks a fundamental reality that financial professionals have long cautioned: leverage is a double-edged sword that magnifies both market gains and losses in ways that can devastate unprepared investors.

The allure of leveraged exchange-traded funds has grown alongside retail investor interest in outsized returns. $SSO, which uses 2x leverage to amplify S&P 500 exposure, represents one of the most accessible vehicles for pursuing this strategy. However, recent performance data and structural characteristics of the fund reveal critical weaknesses that should give long-term investors serious pause.

The Performance Reality: Leverage Cuts Both Ways

While $SSO's historical 14.5% average annual return over approximately 20 years appears impressive compared to the broader market's long-term trajectory, the fund's year-to-date performance tells a starkly different story. Through the current period, $SSO has declined 9% while the underlying S&P 500 index fell just 3.8%—demonstrating how leverage amplifies downside movements with alarming speed.

This performance divergence occurs due to a structural issue inherent to leveraged funds: daily rebalancing. These instruments reset their leverage ratios each trading day to maintain their target leverage multiple. During volatile or declining markets, this daily reset mechanism forces the fund to sell equities at depressed prices and buy back at higher prices, creating what financial professionals call "decay." Over extended periods, especially during market downturns, this decay can significantly erode returns regardless of whether the underlying index ultimately recovers.

Key performance metrics highlight the concerning cost structure:

• $SSO's year-to-date decline: 9% (vs. S&P 500's 3.8%)
• Leverage amplification factor: 2x the underlying index
• Expense ratio: 0.87% annually
• Historical average annual return: 14.5% over ~20 years
• Theoretical 35-year projection: $10,000 → $1,000,000

The Hidden Cost: Expense Ratios and Market Structure

Beyond performance headwinds, $SSO's 0.87% expense ratio represents a significant premium over standard S&P 500 ETF alternatives. Investors can access the broad S&P 500 through funds like the Vanguard S&P 500 ETF ($VOO) at just 0.03% annually, or the SPDR S&P 500 ETF Trust ($SPY) at 0.09%—creating a cost differential of 0.78 to 0.84 percentage points per year.

Over a 35-year investment horizon, this expense differential compounds into a meaningful drag on returns. Consider that a single percentage point of annual fees can reduce final portfolio value by 25-30% over such an extended period. For a fund already facing structural decay headwinds from daily rebalancing, the elevated expense ratio creates a doubly challenging environment for long-term wealth accumulation.

The fund's structural design also creates tax inefficiency for taxable accounts. The daily rebalancing necessary to maintain leverage ratios generates frequent trading activity that can trigger capital gains distributions, creating tax liabilities that further erode after-tax returns for individual investors.

Market Context: The Leveraged ETF Landscape

Leveraged ETFs occupy a peculiar niche within the broader investment ecosystem. Originally designed as tactical tools for sophisticated traders seeking to amplify short-term directional bets, these instruments have increasingly attracted retail investors seeking to accelerate wealth accumulation. The category has grown substantially, with billions in assets across various leveraged products covering equities, bonds, commodities, and currencies.

The broader financial services industry and regulatory bodies have increasingly scrutinized these products. The Securities and Exchange Commission and various consumer protection advocates have issued guidance cautioning that leveraged and inverse ETFs are designed for experienced traders executing short-term strategies, not for buy-and-hold investing. Academic research consistently demonstrates that leveraged funds underperform their theoretical leverage-adjusted benchmarks over extended periods, primarily due to the decay mechanism and fee structures.

Within the leveraged equity ETF category specifically, $SSO competes with other 2x S&P 500 leverage vehicles, though the competitive landscape remains limited. The fund's $8+ billion in assets under management makes it one of the largest in this category, suggesting widespread retail investor participation despite the cautionary signals from financial professionals.

Investor Implications: Who Should Consider Leveraged ETFs?

For most investors pursuing traditional long-term wealth accumulation strategies, leveraged ETFs like $SSO present more risk than reward. The theoretical $1 million endpoint assumes:

• Consistent 14.5% annual returns (historical average, not guaranteed)
• Ability to withstand drawdowns that can exceed 30-40% during market corrections
• No need to access capital during downturns (forced selling locks in losses)
• Tax-deferred investment accounts or highly tax-efficient strategy execution
• Psychological resilience to stomach amplified volatility

These assumptions frequently break down in practice. A more realistic assessment suggests that $SSO is better suited for experienced day traders and tactical traders executing short-term directional bets within defined risk parameters, rather than as a core holding for buy-and-hold portfolios.

For investors seeking enhanced returns on S&P 500 exposure, alternative strategies merit consideration: low-cost diversified index funds ($VOO, $SPY, or Vanguard Total Stock Market ETF at $VTI), supplemented by additional exposure to value stocks, small-cap equities, or international markets, would likely deliver superior risk-adjusted returns over extended periods without the structural decay headwinds and elevated fees.

Investors attracted to the leverage concept should also consider that they can synthetically achieve 2x exposure to the S&P 500 by borrowing against a margin account and deploying those funds into unleveraged S&P 500 ETFs—a strategy that often proves cheaper and more tax-efficient than holding leveraged funds.

Forward-Looking Perspective

The $SSO narrative—turning $10,000 into $1 million—represents an emotionally compelling story that resonates with investors seeking rapid wealth accumulation. However, the gap between theoretical projections and practical reality proves substantial. Recent year-to-date underperformance relative to the unlevered S&P 500, combined with structural decay mechanisms, elevated expense ratios, and tax inefficiency, suggests that most investors would achieve superior outcomes through simpler, lower-cost strategies.

As retail investor sophistication continues to evolve and regulatory scrutiny of leveraged products intensifies, the important question becomes not whether leverage can generate returns, but whether individual investors' time horizons, risk tolerance, and investment discipline genuinely align with the demands these instruments impose. For the vast majority pursuing traditional retirement and wealth accumulation goals, the evidence suggests the answer remains no.