Big Tech Earnings Trigger Divergent Market Moves; Memory Stocks See Extreme Volatility

A wave of quarterly earnings reports from technology giants created significant divergence in the market this week, with investors heavily favoring companies demonstrating strong cloud performance while penalizing those with weaker forward-looking guidance. Microsoft and Amazon saw their shares surge, while Apple and Meta Platforms experienced sharp declines.

Cloud Powers Tech Winners

Microsoft (MSFT) shares jumped over 15% on Thursday following a quarterly report that beat expectations and provided a strong revenue outlook. According to the company, growth was driven by its Azure cloud business and Office software suite. Analysts at Barclays noted the results gave investors a reason to reconsider the stock, citing the company's ability to deliver growth while maintaining its capital expenditure forecast.

Similarly, Amazon (AMZN) was a top performer, rallying more than 15% on Friday. The e-commerce and cloud giant surpassed second-quarter revenue estimates, propelled by accelerating growth in its Amazon Web Services (AWS) division. The company did, however, raise its full-year spending forecast by $20 billion to $220 billion, citing higher memory chip costs and ongoing investments in AI infrastructure.

Weak Guidance Punishes Apple and Meta

In contrast, Apple (AAPL) shares tumbled more than 9% on Friday. The sell-off was triggered by the company's sales growth guidance for the September quarter, which at 9% to 11% fell short of the 12% analysts had anticipated. KeyBanc analyst Brandon Nispel, who reiterated an Underweight rating on the stock, pointed to significant supply constraints and foreign exchange headwinds as future challenges.

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Meta Platforms (META) also faced investor backlash, with its stock declining 9% over the week. The social media company missed second-quarter earnings estimates and issued third-quarter revenue guidance that was below Wall Street expectations. A 55% jump in total costs and expenses, which included significant legal and severance charges, also weighed on sentiment.

Volatility Grips Memory Chip Sector

The memory chip sector experienced an exceptionally volatile week, marked by a steep sell-off that reversed into a powerful rebound on Thursday. The recovery was fueled by comments from Samsung indicating that a supply shortage for High-Bandwidth Memory (HBM) would likely intensify through 2027. Speculation that the collapse of a hedge fund had exaggerated the earlier declines also contributed to the sharp reversal.

The weekly performance figures illustrate the volatility:

• Micron (MU): Finished the week down 11.5% despite surging 18.4% on Thursday.
• SanDisk: Ended the week down 18.6% despite a 26% rally on Thursday.
• SK Hynix: Lost 8.9% over the week.