General Motors Drops 4.8%, Erasing $3.5 Billion in Market Value

As seen on the 24/7 Wall St. homepage on September 18, 2026.

GM General Motors
Regular session
$82.21
-4.79% open $86.35
$86$84$82

A 4.8% intraday slide to $82.21 knocks roughly $3.5 billion off the automaker's $74.4 billion market value in a single session. Whether the $86.35 open gets reclaimed by the close is the level to keep an eye on.

Continue ReadingShow less

General Motors shed roughly $3.5 billion in market value in a single session, with shares sliding from an open of $86.35 to $82.21 during regular trading hours.

Selling pressure set in almost immediately at the open and barely relented through the afternoon, with no meaningful bounce.

Sponsored

Twelve Tabs, One Thesis

Your Research Resets Every Morning

The quote page in one tab. Filings in another. A chart you rebuilt from scratch, a transcript you never went back and found, a screener whose settings you will redo next week. Nothing you built yesterday is still there.

AlphaSpace replaces all of it with one screen you arrange yourself. Earnings calendar, estimate versus actual, the call transcript, live news, your own charts, every panel wired to whatever ticker you click. Close the browser and it is all still sitting there tomorrow.

See What a Built View Looks Like →

(Sponsor)

The $86.35 open now stands as the key level to watch, and a close below it leaves the session as a one-way slide with buyers absent.

For investors already holding the stock, the size of the move relative to a single session is what demands attention. A loss of nearly 5% in one day, absent a recovery into the close, shifts the near-term technical picture in a meaningful way.

Mentioned: GM