Top Losers (1D)
Biggest single-day losers by market cap > $1B.
Large one-day drops among $1B+ companies point to news the market priced in fast, such as a missed quarter, a cut forecast or a lost contract. When several stocks in one industry fall together, the cause is usually something they share.
Some drops reverse within days and some are the first leg of a longer decline. The day's move alone won't tell you which.