¡El Dow se dispara 585 puntos: Los mercados se recuperan con fuerza tras las pérdidas de la semana pasada

Los mercados accionarios revivieron este lunes con una inyección de optimismo—el Dow Jones lideró el rebote con un salto de 585 puntos.

¿Alivio temporal o el inicio de una nueva tendencia? Los traders respiran aliviados... por ahora.

Los tiburones de Wall Street ya están buscando a quién culpar por la volatilidad mientras brindan con champán.

Berkshire sinks after weak quarter, no buybacks

At the same time, Berkshire Hathaway shares slumped after the company posted a 4% year-over-year decline in operating earnings for the second quarter, totaling $11.16 billion.

That figure includes income from its insurance, railroad, energy, manufacturing, services, and retail arms. While most segments performed better than last year, the company’s insurance underwriting losses dragged down the overall results.

Both Class A and B shares of Berkshire dropped more than 2% Monday. The stock is now down roughly 15% from its all-time high in early May, which came right before Warren Buffett, now 94 years old, confirmed that Greg Abel will take over as CEO at the end of 2025.

Despite the stock dip, Warren’s cash pile held steady at $344.1 billion, close to record levels. But Berkshire’s behavior in the market has shifted. For the 11th straight quarter, it sold more stocks than it bought, offloading $4.5 billion in equities during the first half of the year.

The company also did not repurchase any shares in the first six months of 2025 and through July 21, even as its stock corrected. That break from its usual buyback pattern caught attention, especially as markets continue to face pressure.

Tech dominance hits record, other sectors shrink

One of the biggest structural changes in the market right now is the rise of technology stocks. Their share of the market has now climbed to 55%, the highest level ever. That number has doubled since the 2008 financial crisis, and it’s even higher than the ~50% tech share seen during the Dot-Com Bubble in 2000.

While tech keeps growing, other sectors are fading. Defensive stocks now make up just ~17% of the total market, an all-time low. These are usually the stable, reliable plays when the economy gets rough.

Meanwhile, traditional cyclicals, which include sectors like industrials and financials, have fallen to just ~28% of the market. That imbalance has added to concerns that a few big names are doing all the heavy lifting, while the rest of the market falls behind.

Even with Monday’s jump in stocks, there’s no sign that the underlying cracks are being repaired. The Dow’s technical breakdown, Berkshire’s disappointing earnings, stock dumping, and the concentration of power in big tech paint a picture of a market that’s far from stable. Every piece of that puzzle showed up this week, and none of it’s going away quietly.

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