There’s one thing scaring investors today, and it’s not Halloween.

As of this writing, some of the biggest tech stocks are getting hammered in premarket trading, just one day after Google owner Alphabet Inc. saw its own stock price suffer the worst one-day decline in its history. Here’s what you need to know.

Nasdaq lower as tech stocks sink

It’s shaping up to be nothing short of a bloodbath of a week for some stocks.

Yesterday, Alphabet Inc. (Nasdaq: GOOG), parent company of search giant and AI hyperscaler Google, saw its shares drop 12.29% in a single session after reporting its most recent quarterly results.

It was the largest single-day post-earnings share price drop in Google’s history, with more than half a trillion in value wiped out in a single session.

The main driver: a significant increase in Google’s negative cash flow amid its AI buildout.…