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“Is now the right time to invest, or should I wait for better conditions?”

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The S&P 500 spent the first half of 2026 setting 24 new all-time highs, continuing a bull market that has stretched more than 3.7 years and seen the index increase by more than 104% since October 2022.

This run, while still shorter than the average bull market’s 5.4 years, comes with its own warning signs. Record levels of tech dominance, which now accounts for more than 37% of the S&P 500 index by weight, have raised concerns over over-concentration.

YCharts line chart showing the ratio of the S&P 500 Information Technology sector total return level to the S&P 500 total return level from 1990 to June 2026. The ratio peaked during the dot-com bubble near 0.47 before collapsing, then troughed around 0.14 in the mid-2000s. It recovered steadily from 2010 onward, surpassing the dot-com peak around 2020 and reaching a new all-time high of 0.559 in mid-2026, ending at 0.555.

Click to view in YCharts

Concerns about capital expenditures and extreme valuations in Artificial Intelligence have raised questions about whether we are on the verge of the next bubble. All the while, geopolitical tensions in the Middle East remain in the balance, as elevated inflation continues to blur the economic landscape at home. 

This balance of conditions gets clients to begin asking questions. Should they wait for a pullback to invest in a market at all-time highs? Should they move to the sidelines amidst these various concerns? Is now the right time to invest at all?

No advisor can answer these concerns with certainty, and no one should pretend to know what will happen next. But the historical record on waiting is much more decisive than the questions themselves suggest.

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The Worst-Case Scenario

The concern for clients is rarely “I’ll get a slightly worse return”, it’s the fear of investing before everything falls apart. Take the investor with the worst timing imaginable: $100,000 deployed into the S&P 500 on February 19, 2020, the absolute peak before the COVID-19 crash. 

In just 33 days, the S&P would decline by 33.9%, effectively erasing $34,000 of this investment. Compare this to the investor who took the same $100,000 and spread it out over the following twelve months, dollar-cost averaging into the crash and the recovery that followed.

YCharts line chart comparing a $100,000 lump-sum S&P 500 investment made at the COVID-19 market peak (purple, $182,303) against a dollar-cost averaging strategy starting at the same time (orange, $188,626), with net contributions held at $100,000 (blue, flat). Both strategies tracked closely throughout, with DCA maintaining a modest edge by buying shares at lower prices during the initial downturn.

Click to view Scenarios in YCharts

Five years later, both strategies advanced by more than 80%, and despite buying at the single worst possible moment, the lump-sum strategy finished just 6.3% behind the DCA approach. While entry timing affects outcomes, the ability to remain invested through turbulence plays a much more important role.

The bigger danger to returns is how investors behave in these moments, especially when it is tempting to get out of the market and wait for conditions to normalize.

YCharts line chart showing the growth of a $100,000 S&P 500 investment from December 2019 to February 2025 under three scenarios. An investor who stayed fully invested (dark green) grew to $206,150 (15.12% annualized). One who moved to cash at the March 24, 2020 bottom and reinvested a month later (light green) reached $180,170. One who moved to cash on March 24, 2020 and never reinvested (orange, near-flat) ended at just $85,950 — a loss in nominal terms — illustrating the severe cost of panic-selling at the COVID-19 market trough.

Click to view in YCharts

An investor who moved to cash for just one month at the bottom of the COVID crash, in an attempt to “wait for things to calm down”, would have sacrificed more than $25,000 over the course of five years. 

Someone who moved to cash and never returned? They lost money, earning -2.90% annualized and ending 18 percentage points a year behind an investor who did nothing at all. 

The Bigger Picture

When looking over the last 20 years as opposed to a specific crisis event, history favors those who invest early and remain invested. A lump sum investment of $240,000 20 years ago returned 748% total, versus 375% for the same amount invested through monthly DCA contributions. Despite two major recessions, the difference in return would be nearly $900,000.

YCharts line chart comparing a lump-sum SPY investment made in Q3 2006 (purple, $2.036M) against a dollar-cost averaging strategy over the same period (orange, $1.141M), with $240,000 in net contributions (blue, flat). The lump-sum investor held a consistent advantage after recovering from the 2008 financial crisis, finishing nearly $900K ahead of the DCA approach by mid-2026.

Click to view Scenarios in YCharts

The same logic applies to timing an exit and attempting a re-entry. Missing just the 10 best market days over the last 25 years cut annualized returns by more than a third, from 9.55% to 6.06%. Miss the best 50 days and you would be left with annualized losses.

YCharts line chart showing the growth of a $100,000 S&P 500 investment from June 2001 to June 2026 across six scenarios based on missing the best trading days. Fully invested (dark green) grew to $978,470 (9.55% annualized). Missing the 10 best days dropped the result to $435,500, missing 20 days to $253,310, 30 days to $169,690, 40 days to $113,650, and missing the 50 best days produced a loss, ending at $81,310 (-0.82% annualized). The scenarios diverge sharply after 2020.

Click to view in YCharts

These best days are impossible to predict before they arrive, and they tend to cluster very close to the worst ones. Regardless of the scenario, the pattern suggests that money that stays invested outperforms money waiting for a better moment to arrive.

There’s Always a Reason to Sell

Many of these best days have shown up during periods that felt like exactly the wrong time to be invested. Since 1990, the S&P 500 has weathered the dot-com collapse, the 2008 financial crisis, a global pandemic, and many more events that each felt a legitimate reason to step back.

YCharts line chart showing the S&P 500 total return cumulative gain of 4,320% (10.94% annualized) from December 1989 to June 30, 2026. Despite 20+ labeled crisis events — from the 1990 Recession through US Strikes Iran — the market trended sharply higher throughout. Gray bands mark US recessions. The chart implies investors who sold at any of these "reasons" would have missed substantial long-term gains.

Click to view in YCharts

Today’s AI valuation concerns, elevated rates, and conflict in the Middle East raise the same instinct to step back, yet through all of those, the index has returned 4,320% at an annualized rate of 10.94%.

Is Now the Right Time to Invest?

The answer is that nobody knows what the next six months hold. The data across the worst possible entry point, panicking and moving to cash, and missing the market’s best days all point to the same conclusion: the cost of waiting has historically outweighed the cost of being wrong about timing.

Advisors already understand this, but the challenge is making a client feel it when uncertainty and fear creep into their mind. Having access to visuals that explain these scenarios turns “trust me” moments into “look at this” when headlines get loud. 


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