S&P 500 Coiled for AI-Powered Breakout—Goldman’s 12% EPS Growth Thesis Could Fuel 6,750 Move by March 26

The S&P 500 is in a holding pattern, but the market is watching two main characters for the next move. The index closed at 6,606.49 yesterday, trading in a tight range from 6,711.56 to 6,773.42. This coiling action suggests the market is digesting the massive momentum from last year. The question is whether the current setup can fuel a breakout to clear the 6,750 level by next week.

The dominant theme driving search interest and market attention is the AI investment boom. Traders are focused on its 2026 growth potential, making it a viral sentiment. This isn't just hype; it's a key investment theme Goldman Sachs Research expects to boost earnings. The thesis is that the S&P 500's path to a 6,750+ close depends on this AI narrative maintaining its momentum and delivering on expectations.

For now, the market is cautious. It's like a spring coiling up, waiting for a catalyst to break out. The setup hinges on two factors: the continuation of the AI investment story and the fundamental support from earnings growth. If both themes stay in focus, the index could push higher. If either falters, the tight range could quickly break down.

The Bull Case: Earnings Growth and AI Fuel the Rally

The bull case for pushing the S&P 500 toward 6,750 by March 26 rests on two powerful, interconnected drivers: solid earnings growth and the continued momentum of the AI investment theme. This isn't a vague hope; it's a forecast backed by major research.

Goldman Sachs Research provides the foundational math. They project the S&P 500 to deliver a 12% total return in 2026, driven by a 12% increase in earnings per share (EPS). That double-digit profit growth is the essential fuel for a bull market, providing the fundamental base to justify current valuations. In a market where the top tech stocks alone accounted for 53% of the S&P 500's return in 2025, this earnings expansion is critical to broadening the rally beyond a handful of mega-caps.

AI is the specific catalyst expected to power that earnings growth. Goldman identifies it as a key 2026 investment theme, alongside corporate re-leveraging. The research notes that while overall capital expenditure growth may slow, AI investment is expected to continue increasing this year. This sustained spending is projected to boost productivity and revenue, directly feeding the EPS growth forecast. The market's intense search interest in AI confirms this is the dominant narrative, making it a viral sentiment that can attract capital.

The bullish setup is further validated by prediction markets. Contracts for the March 26 S&P 500 futures settle price show strong conviction, with the 6,550 contract trading at 97¢. This price implies a 97% probability that the index will close above that level on the settlement date. While this doesn't guarantee a move to 6,750, it reflects a market consensus that the index is likely to trade significantly higher than its current range, aligning with the earnings and AI-driven growth thesis.

The bottom line is that the bull case is built on a clear chain: AI spending drives productivity and revenue, which lifts corporate earnings, which supports stock prices. With Goldman's forecast for 12% EPS growth and the AI narrative firmly in focus, the path to 6,750 appears plausible. The market is essentially betting that this engine will keep running.

The Bear Case: Valuation, Geopolitics, and Headline Risk

The bullish setup faces a stark counter-narrative built on valuation extremes and looming external shocks. The market's current coiled state reflects this tension, where the AI rally meets sobering math.

The most direct threat is to the return forecast itself. Research Affiliates founder Rob Arnott argues the math from here gets bleak, predicting that U.S. big-cap shareholders will make one-fifth the returns over the next 10 years they pocketed since 2016. His analysis points to the historic, unsustainable outperformance of earnings and valuations over the past decade as a guarantee of a rougher road ahead. This isn't a call for a crash, but a warning that the era of 15% annual gains is likely over, setting a lower baseline for the market's trajectory.

Valuation concerns are immediate and tangible. The S&P 500 trades at a forward price-to-earnings ratio of 22x, matching the peak multiple from 2021. That level of valuation leaves little room for error. As Goldman Sachs notes, elevated multiples are hard to ignore, and they increase the magnitude of potential equity market downside if earnings disappoint expectations. In a market where the top tech stocks alone accounted for 53% of the S&P 500's return in 2025, this concentration amplifies the risk. The index's performance is now heavily dependent on a handful of companies, making it vulnerable to any stumble in their AI-driven growth story.

Then there are the external shocks that can quickly shift market attention. Escalating geopolitical tensions, like the war in Iran, are a major headline risk. Just this week, the conflict pushed bond yields higher and stocks lower, with the S&P 500 falling to a 3.75-month low. Hawkish warnings from global central banks about inflation risks from soaring energy prices have fueled speculation of tighter monetary policy, adding another layer of pressure. These events represent a classic "risk-off" catalyst that can instantly deflate the AI narrative and pull capital out of equities.

The bottom line is that the rally to 6,750 faces a multi-pronged challenge. The bear case argues that the market's valuation and concentration are stretched, making it fragile. At the same time, geopolitical and economic shocks can quickly change the news cycle, diverting capital and sentiment away from the AI theme. For the S&P 500 to break out, it must navigate these headwinds while the AI story continues to deliver.

Catalysts and What to Watch: The March Resolution

The market is coiling up like a spring, and the resolution hinges on a few specific catalysts. Traders need to watch three clear signals to see if the S&P 500 breaks out toward 6,750 or breaks down.

First, watch the technical levels. The index is currently trading around 6,606.49. The key support to watch is the 6,550-6,600 range, with a deeper correction possible if it breaks below 6,750 and targets the 50-week EMA near 6,500. On the upside, a decisive break above the 6,700-6,750 resistance zone would signal the bullish breakout is underway, potentially opening the door to higher levels.

Second, monitor for shifts in monetary policy expectations. The recent sell-off was triggered by hawkish warnings from global central banks about inflation risks from the war in Iran, pushing the S&P 500 to a 3.75-month low. Any new Fed commentary or economic data, like the upcoming CPI report, that signals a change in the tightening bias could quickly alter the market's risk appetite and direction.

Finally, the resolution of geopolitical tensions is a major external catalyst. The escalation in the Middle East has been a direct driver of recent volatility and a "risk-off" catalyst. Any de-escalation would remove a key headline risk, while further escalation would likely reignite inflation fears and pressure stocks.

The bottom line is that the March resolution will be decided by these concrete events. The market's patience is being tested, but a clear signal from any of these three fronts could trigger the breakout or breakdown that has been coiled up for weeks.