Is the Vanguard S&P 500 ETF Still Worth Buying When Markets Are Down?

The article argues investors should keep buying the S&P 500, highlighting that the index has recovered from every bear market in history, including declines of 34% to 57%, and that fully invested investors earned a 4% average annual return from 2000 through 2020. It emphasizes dollar-cost averaging and staying invested through downturns rather than selling during declines. The piece is broadly supportive of the Vanguard S&P 500 ETF as a long-term vehicle, but it is mainly educational commentary rather than new market-moving information.

Analysis

The behavioral edge here is not that passive index exposure is “good,” but that forced selling during drawdowns creates a structural transfer of wealth from impatient retail to patient allocators. The second-order effect is that every sharp selloff tends to compress forward expected returns only briefly; once volatility spikes and positioning gets cleaner, systematic buyers and regular contributors become the marginal bid. That makes the most attractive setup not “buying because markets are cheap,” but buying because flows are likely to remain mechanically supportive even as headlines stay negative.

The clearest implication for the named holdings is that the article reinforces a ceiling on capital rotation away from mega-cap winners. If investors stay committed to broad index exposure, the highest-quality beneficiaries remain the companies that dominate index weight and earnings durability—NFLX and NVDA—while lower-quality AI laggards like INTC are more exposed to any rotation toward fundamentals over narrative. In other words, the thesis is not a blanket risk-on call; it is a persistence-of-flows call that favors durable growth over cyclical beta.

Contrarian risk: the market’s biggest drawdown danger is not a bear market itself, but a prolonged “grind” where returns are flat for 12-24 months and investors abandon dollar-cost averaging before the recovery compounds. That matters because the article implicitly assumes investors can stay solvent and emotionally disciplined through the path, not just the endpoint. If macro growth cracks or earnings revisions broaden lower, the index may still recover eventually, but the opportunity cost of sitting through a long earnings recession would be meaningful enough to justify selective hedging rather than blind averaging.

The consensus miss is that passive investing is not a valuation-insensitive strategy; it works best when the index is led by firms with expanding free cash flow and wide moats. In a market where a small cohort drives most returns, the more efficient expression is often concentrated exposure to the winners rather than generic index accumulation, especially if the goal is to outperform rather than simply participate.

Key Decisions for Investors

• Long NFLX and NVDA versus broad index exposure for 6-12 months; use any market dip to add. These are the higher-quality compounding names most likely to outperform passive inflows if investors keep buying the index mechanically.
• Short INTC on rallies or use put spreads over 3-6 months. If the market rotates toward fundamentals, low-confidence turnaround stories are the most vulnerable to underperformance versus the index.
• Pair trade: long QQQ / short equal-weighted high-beta cyclicals over the next 1-3 months. The setup favors persistent inflows into mega-cap growth while reducing exposure to the part of the market most damaged by sentiment-driven selling.
• For accounts that insist on DCA, implement it with downside hedges: buy SPY or VOO on a schedule but fund a small portion with 3-6 month SPY put spreads. This preserves participation while limiting the risk of capitulating during a fast drawdown.