After hours on Wednesday, Alphabet's drop looked like a 9.5% dent.

After hours on Wednesday, Alphabet's drop looked like a 9.5% dent. By Thursday's close it was 13%, Alphabet's worst trading day ever and its biggest drop since going public in 2004. The prior record was an 11.63% decline in March 2020. Roughly $500 billion in market cap disappeared in one session.

The number I keep coming back to is free cash flow. Alphabet posted negative $9.07 billion for Q3, against the negative $2.7 billion analysts expected. It also kept its full-year capex guidance at $195-205 billion, so there's no sign the spending slows down.

Microsoft reported the same evening and traded roughly flat. Its capex was $45.2 billion, up 30% year over year but below the $50.67 billion estimate. Free cash flow fell 27% to $18.63 billion, and it stayed positive. The fallout from Alphabet's drop spread into Asian markets on Friday, with Nasdaq futures falling.

My read: investors are still willing to back the AI buildout, but they want to see cash coming back in while it happens. Microsoft spent heavily and stayed cash-positive. Alphabet went deep into negative territory and held its guidance anyway. That gap is what I'd want management to explain on the next call.

Sources:
CNBC: https://www.cnbc.com/2026/10/29/alphabet-google-microsoft-msft-shares-today-earnings.html
Saxo Market Quick Take: https://www.home.saxo/en-sg/content/articles/macro/market-quick-take---now-amazon-and-intel-spook-us-tech---30-october-2026-30102026

Not financial advice. For informational and educational purposes only.