The SPDR S&P 500 ETF Trust (NYSE:SPY) has posted an impressive 24.18% gain year-to-date, largely driven by the dominance of the ‘Magnificent 7‘ mega-cap tech stocks.
These names, which include Nvidia Corp (NASDAQ:NVDA) and Microsoft Corp (NASDAQ:MSFT), have contributed to aggressive multiple expansion, pushing the S&P 500 index’s price-to-earnings (P/E) ratio to 27.9x.
While some argue this is justified by superior earnings growth and margins, history suggests sustaining such metrics is a challenge.
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Risks In Concentration, Valuation
The concentration of SPY's performance in its top 10 holdings, which now make up 37.81% of the index, is a potential red flag. Since 1957, the top 10 companies in the S&P 500 have underperformed the remaining 490 stocks by 2.4% annually. If the Magnificent 7 struggles to maintain lofty growth expectations, the ripple effects could weigh heavily on SPY's broader performance.
Additionally, the index’s recent gains have been driven more by multiple expansion than organic earnings growth. With consensus estimates forecasting aggressive earnings growth of 15% in 2025 and 13% in 2026, any shortfall could temper bullish sentiment.
SPY Chart Points To Mixed Sentiment
Chart created using Benzinga Pro
Technically, SPY appears bearish in the short term. It trades below its eight, 20 and 50-day simple moving averages, signaling selling pressure.
The Moving Average Convergence Divergence (MACD) indicator of a negative 0.93 and RSI of 41.29 further reinforce a lack of momentum.
However, SPY remains above its 200-day simple moving average, offering a longer-term bullish signal.
A Balancing Act For S&P 500 Investors
SPY presents a complex case. Its strong year-to-date gains reflect optimism around tech-driven growth, but concentrated risk and elevated valuations introduce caution.
While long-term growth estimates remain promising, historical trends and short-term technicals suggest investors should keep a balanced perspective as they navigate this iconic ETF.
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