It was a disquieting year , as political and economic news stories shook the foundations of the post-war economic order, built around global trade and the US dollar. In fact, if you had been read just the news all through the year, and were shielded from financial markets, and been asked what stocks did during the year, you would have guessed, based on the news, that they had a bad year. You would have been wrong, though, as equity markets proved resilient (yet again) and delivered another solid year of returns for investors. In this post, I will focus on US equities, starting with the indices, and then deconstructing the data to see the differences in the cross section. As has been my practice for the last few years, I will also use this post to update the equity risk premium for the S&P 500, my composite indicator for whether the market is richly priced or not, and estimate a value for the index, with a "reasonable" equity risk premium.
Back from the Brink: US Equities in 2025
At the start of 2025, the consensus view was that stocks were primed to do well, helped by what investors perceived would be a business-friendly administration and a Federal Reserve, ready to cut rates. In keeping with Robert Burn's phrase that the best-laid plans of mice and men go awry, the year did not measure up to those expectations at least in terms of policy and rate changes, but stocks still managed to find a way through. Let's start with a look at the S&P 500 and the NASDAQ, day-to-day through the year:
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| Download data |
Deconstructing US Stock Price Performance
I have tracked the performance of each sector, by quarter, and across the year a measured the returns. The best performing sector in percentage returns was communication services (which includes Alphabet and Meta), up 30.63% for the year, followed by technology, which continued it sustained run of success by delivering 23.65% as an annual return; on a dollar value basis, it was not close with technology companies posting an increase of $4.17 trillion in market cap during the year. The worst performing sectors were consumer staples and real estate where the returns were about 2% for the year.
The problem with sector categorizations is the they are overly broad and include very diverse industry groupings, and to overcome that problem, I looked at returns by industry, with a breakdown into 95 industry groups. While you can find the full list at the end of this post, I ranked the industry returns in 2025, from best to worst, and extract the ten best and worst performing industry groups:
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| Download industry returns in 2025 |
The aggregate market cap of the Mag Seven has increased from 11% of the US equity market (composed of close to 6000 stocks) in 2014 to 30.89% of the market at the end of 2025, with the $3.9 billion in market cap added in 2025 accounting for 39.3% of the overall increase in market capitalization of all US equities during the year. While this Mag Seven party will undoubtedly end at some point, it did not happen in 2025.
US Equities: Too high, too low or just right?
This post, at least so far, has been a post mortem of the year that was, but investing is always about the future, and the question that we all face as investors, is where stocks will go this year. In my unscientific assessment of stock market opinion, from experts and market timers, there seems to a decided tilt towards bearishness at the start of 2026, for a variety of reasons. There are some who note that having had three good years in a run, stocks will take breather. Others point to history and note that stocks generally don't do well in the second years of presidential terms. The most common metric that bearish investors point to, though, is the PE ratio for stocks at the start of 2026 is pushing towards historic highs, as can be seen in the graph below, where I look at three variants on the PE ratio - a trailing PE, where I divide the index by earnings in the most recent 12 months, a normalized PE, where I divide the index by the average earnings over the last ten years and a Shiller PE, where I average inflation-adjusted earnings over the last ten years:
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| Download historical PE ratios for US equities |
Using every PE ratio measure, it is undeniable that the PE ratio for the S&P 500, at the start of 2026, is much higher than it has been at any extended period in history, perhaps with the exception with the late 1990s. While this may sound like a slam dunk argument for US stocks being over priced, it is worth remembering that this indicator would have suggested staying out of US equities for much of the last decade. The problem with the PE pricing metric is that it is noisy and an unreliable indicator, and before you use it to build a case that equity investors in the US have become irrational, you may want to consider reasons why US stocks have benefited able to fight the gravitational forces of mean reversion.
1. Robust Earnings Growth & Earnings Resilience: In this century, US stocks have increased more than four-fold, with the S&P 500 rising from 1320.28 at the end of 2000 to 6845.5 at the end of 2025, but it is also worth noting that US companies have also had a solid run in earnings, with earnings increasing about 356% during that same time period.
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| Download spreadsheet |
- If you believe that the market is pricing in too low an ERP, given the risks that are on the horizon, you are contending the stocks are over priced.
- If your view is that the current ERP is too high, that is equivalent to arguing that stocks today are under priced.
- If you are not a market timer, you are in effect arguing that the current ERP is, in fact, the right ERP for the market.
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| Download historical implied ERP |














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