Should You Buy VOO Before the Market Rebounds?

The Vanguard S&P 500 ETF fell roughly 6% from its October high through Nov. 5 after a sharp post-election sell-off, creating what the article describes as a potential buying opportunity for long-term investors. S&P 500 companies were on pace for about 30% year-over-year Q3 earnings growth, while inflation remains elevated, oil is above $90 per barrel, and long-term Treasury yields pressure valuations. The key risk is a slowdown in AI spending and earnings expectations; the article notes no broad evidence of that slowdown so far.

Analysis

The pullback alone does not establish that VOO is cheap: the key issue is whether forward earnings estimates can absorb a higher discount rate and any moderation in AI-related investment. Aggregate earnings growth may conceal concentration in a small set of large companies; if those firms guide to slower infrastructure spending, index-level estimates and the multiple could both reset. Conversely, broadening earnings growth would make the index less dependent on a narrow AI cohort and support the dip-buying case.

Horizon: In the next several weeks, positioning and rate/oil moves may dominate fundamentals. Over 1–3 months, track forward S&P 500 estimate revisions, large technology capex guidance, and the breadth of earnings beats—not just reported aggregate growth. Over 6–18 months, the structural question is whether AI investment converts into customer revenue and productivity gains fast enough to justify the capital intensity.

Contrarian read: A 5–6% decline is not, by itself, a valuation signal. The optimistic case may underweight the joint pressure of oil above $90 and elevated long yields; the bearish case may overread political uncertainty before any concrete policy change. The thesis is falsified if estimate revisions turn broadly negative or capex plans are cut materially; it strengthens if earnings breadth improves while yields and energy costs stabilize.

Key Decisions for Investors

• For a tactical long-term allocation, add VOO in tranches rather than treating the first pullback as a confirmed bottom; reserve further buying for either stabilization in forward earnings revisions or another leg lower without deterioration in estimates.
• Consider a relative-value watch, not an automatic trade: long an equal-weight S&P 500 exposure versus VOO if earnings breadth improves and mega-cap AI guidance weakens. Reassess if equal-weight earnings revisions fail to improve or leadership remains concentrated.
• Avoid paying for an unhedged dip-buy solely on the headline earnings-growth figure. Before increasing exposure, verify forward estimate breadth, capex guidance from major AI spenders, and the direction of long Treasury yields and oil.
• Near-term risk/reward is asymmetric to renewed volatility if yields rise or oil remains elevated; reduce or pause additions if broad forward EPS revisions roll over. A sustained stabilization in those inputs alongside wider earnings participation would invalidate the cautious stance.