S&P 500 at All-Time Highs: Is the Rally Sustainable?

The S&P 500 enters July 2026 at all-time highs, up double digits year to date. Bears point to concentration (the top ten names are ~38% of the index), a forward multiple near 23×, and a Fed on hold. Bulls point to the fastest earnings growth since 2022 — around 22% year over year — and the fact that expensive markets with accelerating earnings historically keep working. Both are right; the question is what you own, not whether you're in.

The case for staying invested

• Earnings, not multiple expansion, are driving this leg — the index P/E is roughly flat over six months while prices rose with profits.
• Breadth is improving at the margin: equal-weight (RSP) and small caps (IWM) have outperformed the cap-weighted index over the last month.
• Positioning isn't euphoric — money-market assets remain near records, a reservoir that historically feeds pullback-buying.

The risks worth respecting

• Concentration cuts both ways: one bad hyperscaler capex guide moves the whole index (see our Q2 earnings preview).
• The Fed has held since March; a hawkish surprise on sticky services inflation would hit long-duration growth multiples first.
• July 22–30 is the highest-stakes eight-day window of the quarter — five mega-caps report into record expectations.

Time in the market beats timing the market — but what you hold during the time matters more than either.

Our stance: fully invested, tilted toward equal-weight and quality-factor exposure (RSP, QUAL, SCHD) to sidestep single-name concentration, with the AI-infrastructure sleeve (see our $2T buildout piece) as the growth engine. Neutral on adding at these levels; aggressive on adding into any 5%+ earnings-season drawdown.