Lam Research falls 16.4%, about 4 times a normal day
Lam Research closed down 16.4% on 5 November 2026, its largest one-day fall since at least 7 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 LRCX (delayed); SEC EDGAR: Lam Research Corporation 8-K, filed 5 November 2026). How we check
Written by software from the data shown, at 01:35 ET on 6 November 2026. Not edited before publication. How this is made
Closes, filings and official calendars
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Lam Research Corporation (LRCX) shares fell 16.4% on 5 November 2026. Below are the closes, how unusual the move was, and what the company filed.
The move
Lam Research closed at $185.20 on 5 November 2026, down 16.4% from $221.43 on 4 November, its largest one-day fall since at least 7 November 2024, the start of the daily closes we hold. About 31.4 million shares traded on 5 November, 2.7 times the average of the 20 sessions before. In the 20 sessions to 4 November its daily changes had a standard deviation of 3.9% (20-day realized volatility of 61.7% a year), so the move on 5 November was about 4.2 times a normal day.
What the company filed
Filed with the SEC from 1 November to 5 November, as listed on EDGAR:
- 5 November: 8-K (Item 5.07, a shareholder vote; Item 8.01, other events; Item 9.01, financial statements and exhibits).
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 Lam Research has filed, each linked to its filing, is on the LRCX page at /s/lrcx.
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.
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