The profit engine that supported the rise in stock markets could stop in 2027, warns MarketWatch

Strong corporate earnings growth was the main driver of the stock market rally in 2026, according to MarketWatch. The report, however, points out that this same engine could stop in 2027, and that is where the main threat to a bull market driven by artificial intelligence lies.

The central point of the text is dependence. When the appreciation of stock markets is mainly based on the expansion of results, any sign that profits may lose momentum starts to weigh more than the rest of the news.

It is worth recording the source limit. The MarketWatch text does not contain numbers, company names or values, so it is not possible to measure the size of the risk or point out specific sectors or companies. The general diagnosis, however, is clear: the 2026 increase came from profits, and the continuity of this factor is not guaranteed.

In practice, the discussion is about sustainability. A rally that depends on results in strong growth needs that growth to continue. If it weakens, the market tends to review how much it is willing to pay for the shares.

For those who defend fiscal responsibility, free markets and lower taxes, the lesson is one of prudence: no single engine of appreciation should be treated as a guarantee. Robust profits support prices in the long term, but this support depends on conditions that can change.

What changes for the investor

If the earnings engine loses steam in 2027, the most likely effect on the market is a revision of expectations, especially for stocks that already trade at a high premium. Anyone who follows the stock market, Nasdaq, interest rates and the dollar should give more weight to company balance sheets and projections than to the enthusiasm surrounding artificial intelligence. This article does not predict prices or indicate the purchase or sale of any asset.

Automatically translated from Portuguese.