Should You Buy the Vanguard S&P 500 ETF As the Market Hits New Highs?

The S&P 500 is up more than 11% year to date and remains near all-time highs, while the CAPE ratio is close to 40, near its second-highest level ever. The article argues that despite elevated valuations, long-term investors can still use the Vanguard S&P 500 ETF (VOO), which has $1.6 trillion in assets and a 0.03% expense ratio, to gain diversified exposure to AI leaders and the broader market. It also highlights a hot IPO backdrop, with Cerebras having debuted and SpaceX, Anthropic, and potentially OpenAI expected to come to market soon.

Analysis

The key market signal is not that equities are expensive; it is that passive capital keeps being forced to buy concentration at higher multiples while breadth remains uneven. That is bullish for the largest index constituents in the short run because systematic allocations and retirement flows cushion drawdowns, but it also raises the odds that the next correction is a multiple reset rather than a recession-led earnings collapse. In that setup, the most vulnerable names are the long-duration AI beneficiaries whose value depends on multiple expansion plus execution, not just current cash flow.

NVDA still looks like the cleanest relative winner because every incremental wave of AI spend reinforces its ecosystem lock-in, but the second-order effect is margin compression elsewhere in the stack as competitors race to spend their way into relevance. INTC is more of a financing/execution call option than a fundamentals story; if IPO and AI enthusiasm persists, it can trade as a policy/turnaround beta proxy, but it is also the first to re-rate lower when enthusiasm fades. NDAQ benefits indirectly if the IPO window actually reopens, but the more important readthrough is that a hot issuance market can temporarily divert attention and capital away from secondary equities, creating tactical pressure on index fund flows rather than a structural shift.

The contrarian point is that crowded optimism around "buy the index" is exactly what creates vulnerability when volatility finally returns. With valuations extended, any combination of a weak auction, a hawkish macro print, or a disappointing AI monetization update could trigger a fast 5-8% drawdown in the broad market over days to weeks, even if the medium-term trend stays intact. The right way to express that is not to fight the market outright, but to own the secular winners while hedging the index beta that is being priced as if nothing can go wrong.

Key Decisions for Investors

• Stay long NVDA versus the S&P 500 for the next 1-3 months; the relative momentum and ecosystem lock-in remain strongest, but use a 10-12% trailing stop because the stock will be the first liquid AI proxy sold if sentiment turns.
• Enter a tactical short on the S&P 500 via SPY or /ES put spreads 30-60 days out, financed against core long exposure; risk/reward favors hedging a stretched index at modest premium rather than outright de-risking the book.
• Pair long NDAQ / short SPY into the IPO window over the next 4-8 weeks; if issuance stays hot, exchange and listing revenues should outperform the broad market, with limited downside unless deal activity abruptly stalls.
• Treat INTC as a trading vehicle only: buy on post-news pullbacks for a 2-6 week squeeze, but avoid size beyond a small satellite position since the upside is sentiment-driven while downside remains execution-led.
• Do not chase the index at these levels; instead scale into passive exposure on any 5%+ pullback over the next 1-3 months, when valuation compression should improve forward returns.