Should I Buy ETFs at All-Time Highs?

All-Time Highs Are Normal, Not a Warning

A rising market makes new highs constantly — that's what 'rising' means. The S&P 500 has spent a remarkable share of its history at or within a few percent of a record, hitting dozens of new all-time highs in a strong year. If new highs were a reason not to buy, you'd have been on the sidelines for most of the greatest wealth-building decades in history.

The instinct to wait for a pullback feels prudent but usually backfires. Markets tend to rise over time, so the pullback you're waiting for often starts from a level higher than today's 'scary' high. Waiting in cash for a better entry has historically cost more than it saved, because the average drift of the market is upward.

What the Data Actually Shows

Research on this is surprisingly clear. Studies that compare investing on days the S&P 500 closed at an all-time high versus investing on any random day find that the all-time-high days produced returns that were about the same — and over some horizons modestly better — looking out one, three, and five years. New highs tend to cluster during strong uptrends, and strength has historically tended to beget more strength over the medium term.

This makes intuitive sense once you drop the 'highs are dangerous' framing. A new high simply means the market is doing what it does most of the time: grinding upward and repricing higher as the economy and corporate earnings grow. The all-time high isn't a ceiling the market bumps against — over the long run it's a level the market keeps leaving behind.

The Real Risk Isn't the High — It's Your Time Horizon

Buying at a high is only dangerous if you might need the money soon. Over a 12-month horizon, stocks can absolutely be lower than where you bought, high or not. But over 10-plus years, the entry point matters far less than the simple fact that you were invested. Even investors who bought at the worst possible moments before major crashes recovered and profited if they held long enough and kept contributing.

So the question isn't really 'is the market too high?' — it's 'when do I need this money?' Funds you'll need within a couple of years shouldn't be in stock ETFs at any price. Money you won't touch for a decade can go in at a high without much worry, because you'll have years of contributions and compounding to smooth out whatever happens next.

How to Buy Without Second-Guessing

If a record high still makes you hesitate to deploy a lump sum, dollar-cost averaging is the psychological fix. Splitting a large amount into several purchases over a few months means you buy some at the high and some at whatever comes next, which removes the agony of going all-in the day before a possible dip. Statistically, lump-sum investing has beaten averaging-in most of the time because markets rise more often than they fall — but averaging-in wins on peace of mind.

For ongoing contributions, the all-time-high question is moot: automatic monthly investing buys at highs, lows, and everything between, and over decades that discipline beats trying to outguess the market. Pick a broad fund like VOO or VTI, set up automatic purchases, and let the record highs take care of themselves.

• Match the method to your money: a lump sum has historically won on average; averaging-in over a few months wins on peace of mind.
• Automate ongoing contributions so you buy at highs, lows, and everything between without deciding each month.
• Anchor the decision to your time horizon — only invest money you won't need for several years.
• Pick one broad fund such as VOO or VTI and let the record highs take care of themselves.