Big Tech firms lose billions in market value after third quarter earnings
Four major technology companies lost an estimated $665 billion in combined market value following their third quarter financial results.
FTMQ Tech, written by our newsroom0 views
Meta, Alphabet, Microsoft, and Amazon lost about $665 billion in market value during the first trading session after releasing their third quarter financial reports, FourWeekMBA reported on 1 November 2026. [1]
FourWeekMBA calculated the loss using daily closing prices and share counts listed on the companies' 10-Q filings. Alphabet accounted for $496.5 billion of the total loss, which represents about 75 percent of the overall decline. FourWeekMBA added that Alphabet and Meta disclose up to $133.4 billion in contingent support. [1]
Alphabet is the parent company of Google and is classed among the dominant United States technology companies alongside Microsoft, Apple, Amazon, and Meta, according to Wikipedia. These five firms make up roughly one quarter of the S&P 500 index. [4][6]
MarketWatch reported that the financial losses coincide with a critical period for major technology companies as Apple enters a new earnings era. In related financial news, BigGo Finance reported that Reddit stock dropped by 29 percent following changes in artificial intelligence search traffic. [2][3]
In short
- Meta, Alphabet, Microsoft, and Amazon lost approximately $665 billion in market value after third quarter earnings.
- Alphabet accounted for $496.5 billion, or about 75 percent, of the total market value loss.
- Alphabet and Meta disclose up to $133.4 billion in contingent support.
Sources
Every paragraph above points to the numbered items it rests on. Read the originals here.
- [1]AI Daily: Google Made Up 75% of Big Tech’s $665B LossFourWeekMBA, 2d ago (the report this story comes from)
- [2]Apple’s new earnings era begins at a critical time for Big TechMarketWatch, 2d ago
- [3]AI Search Swallows Traffic: Reddit Stock Plunges 29%, Rattling Big Tech CreditBigGo Finance, 2d ago
Background
Our newsroom writes these reports with the help of software, from the 6 sources listed and nothing else, and checks them against those sources. Facts can still be wrong or move on; the originals are the record. Spotted a mistake? Write to daniel@monsterkong.com.
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