Caterpillar falls 9.3% the session after its results filing
Caterpillar closed down 9.3% on 29 October 2026, its largest one-day fall since at least 1 November 2024, the start of the daily closes we hold. The closes, the trading volume and what the company filed with the SEC around the move.
Checked before publishing: software matched every figure in this piece to the data it came from (Yahoo Finance daily closes for CAT (delayed); SEC EDGAR: Caterpillar Inc. 8-K, filed 29 October 2026; Yahoo Finance daily closes for the 50 companies (delayed)). How we check
Written by software from the data shown, at 06:46 ET on 31 October 2026. Not edited before publication. How this is made
Written by software from the data shown; not edited before publication
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Caterpillar Inc. (CAT) shares fell 9.3% on 29 October 2026, the session after it filed its results with the SEC. Below are the closes, how unusual the move was, and what the company filed.
The move
Caterpillar closed at $647.39 on 29 October 2026, down 9.3% from $713.38 on 28 October, its largest one-day fall since at least 1 November 2024, the start of the daily closes we hold. About 8.2 million shares traded on 29 October, 3 times the average of the 20 sessions before. In the 20 sessions to 28 October its daily changes had a standard deviation of 2.4% (20-day realized volatility of 38.5% a year), so the move on 29 October was about 3.8 times a normal day.
What the company filed
Filed with the SEC from 25 October to 29 October, as listed on EDGAR:
- 29 October: 8-K (Item 2.02, results of operations; Item 7.01, a Regulation FD disclosure; Item 9.01, financial statements and exhibits).
The base rate
In the daily closes we hold for the 50 largest US companies, there were 93 earlier one-day falls of 7% or more that were also at least 3 times a normal day, at 44 companies, the latest on 8 September 2026. Five sessions later the median stock was up 0.2% from its close on the day of the move; 20 sessions later it was up 6.5%, and 72 of the 93 closed above that day’s close. Caterpillar itself did this once before in that period; 20 sessions after, it was up 5.9% (3 April 2025). This counts what happened before, across different companies and markets; it is not a forecast.
What this note does not say
The filings do not give a reason for the share price move, and neither do we: this note puts the closes and the filings side by side. Every quarter Caterpillar has filed, each linked to its filing, is on the CAT page at /s/cat.
Sources
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Sources: Yahoo Finance daily closes and volumes (delayed) and the company’s own SEC filings. The volatility, volume and free cash flow comparisons are our calculations. General market information, not investment advice.
Note: Articles and community posts on PYE Markets are for educational and informational purposes only and are not financial advice.
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