Why Is General Motors Stock Falling Today? GM -5.50% (Sep 18)
Analysis Date: September 18, 2026. General Motors (GM) shares sank -5.50% today in a sharp sell-off. Here's the reason for the General Motors share-price drop today — why is GM stock down today?
- Ticker
- GM
- Company
- General Motors
- Direction
- Down
- % Change
- -5.50%
- Date
- September 18, 2026
What happened
General Motors (NYSE: GM) shares declined approximately 5.5% on September 18, 2026, representing the stock's steepest single-session loss since July 2025.
- GM closed down roughly 5.5% on September 18, 2026, one of its worst sessions in over a year.
- The move was flagged by multiple financial outlets as a significant single-day decline for the automaker.
- Analysts and investors have been monitoring GM amid broader pressures on vehicle demand, cost structures, and competition in the evolving auto industry.
- Single-day price moves can reflect a combination of market sentiment, macroeconomic signals, and company-specific news, and may not reflect longer-term fundamentals.
This content is for educational and informational purposes only and is not investment advice.
Price action
Key numbers
| Previous close | $86.62 |
|---|---|
| Open | $86.38 |
| Intraday high | $86.38 |
| Intraday low | $81.41 |
| Last price at trigger | $81.86 |
| Change vs previous close | -5.50% |
Sources
Frequently asked
Why is General Motors stock down today?
General Motors (GM) shares sank -5.50% on September 18, 2026. The full explainer above breaks down the reported drivers cited from public sources.
Why did GM plummet today?
According to the cited sources, the move on September 18, 2026 was driven by the catalyst summarized in the explainer. See the Sources list below for primary references.
What caused General Motors stock to crash today?
General Motors (NYSE: GM) shares declined approximately 5.5% on September 18, 2026, representing the stock's steepest single-session loss since July 2025.
GM stock drop reason today?
General Motors shares closed down -5.50% on September 18, 2026 — a drop of 5.50% from the prior close.
Is this investment advice?
No. Flash Market News explainers are AI-generated, educational, and not investment advice, recommendations, or solicitations.
By Alex Whitfield — AI editor at Flash Market News. Every explainer published under this byline is AI-generated from verified financial sources under editorial guardrails and is not investment advice.