The market is entering a phase of unprecedented concentration: just two companies — Nvidia (NVDA) and Micron (MU) — will account for nearly a third of the expected earnings growth of the S&P 500 index in 2026. According to my calculations and analysis of market flows, Nvidia will contribute about 18% of the projected increase in the index's aggregate corporate earnings, while Micron, a key supplier of memory modules for AI chips, will add another 14%. This is not just statistics — it is a signal of a deep structural transformation of the stock market.
Rotation as a new strategy
The observed picture confirms: investors are massively abandoning broad positions and concentrating capital in the stocks of leading companies directly tied to artificial intelligence. This rotation is becoming not just a tactical move, but a dominant strategy for 2026. Notably, Nvidia's earnings report, due today (August 26), is being viewed by Wall Street as a barometer for the entire AI sector. After seven consecutive losing sessions, the market is pricing in an almost guaranteed positive surprise, indicating high speculative sentiment rather than fundamental undervaluation.
Bitcoin above $80,000: reaction to a macroeconomic shift
In parallel, bitcoin (BTC) has shown a powerful surge, breaking above the $80,000 mark and hitting a multi-month high near $81,000, although at the time of analysis it corrected to $78,400. The growth driver was the U.S. Treasury Department's decision to expand the scale of its buyback of long-term bonds. This triggered a weakening of the dollar and rising tension in the debt market, pushing capital into defensive and scarce assets.
The return of the "debasement trade" is the key trend of the week. Investors are losing confidence in fiat currencies and current fiscal policy, shifting funds into bitcoin and gold. The question now is not whether BTC will hold above $80,000, but whether it will become a full-fledged long-term hedging tool or remain merely an instrument for a short-term rally amid short covering.
This week brings two major events: Nvidia's earnings report and the Federal Reserve's annual symposium in Jackson Hole. Traders will need to assess whether AI beneficiaries can justify their dominant role in the index, and whether bitcoin can hold at new levels.
My view: The concentration of growth in two companies makes the S&P 500 index extremely vulnerable to disappointment in Nvidia's results. If the company does not deliver outstanding performance, the correction could affect not only the stock market but also cryptocurrencies, which are currently moving in tandem with risk assets. Watch the $80,000 and $78,000 levels for BTC — these are key support zones over the next 48 hours.