Lam Research (LRCX)

As of 30 September 2026, short interest in LRCX is 25,810,795 shares, down 1,940,363 shares over the last month. Over the last 48 readings it ranged from 23,410,728 shares (15 April 2025) to 37,412,627 shares (15 January 2025). At the reported average volume of 9.8M shares a day that is 2.6 days to cover.

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As of 9 October 2026, the short share of LRCX volume is 46.5%, down 11.0 points over the last five sessions. Over the last 30 readings it ranged from 30.0% (31 August 2026) to 60.1% (22 September 2026). The latest reading is in line with the 30-session average of 46.9%, on 1.8M shares reported.

As of 8 September 2026, the fails-to-deliver balance in LRCX is 400 shares, down 65,924 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (11 June 2026) to 68,124 shares (5 June 2026). The latest reading sits at the bottom of that range.

Insiders at LRCX reported 7 open-market sells worth $40.5M in the last 90 days and no open-market buys. Latest filing: Mayer Bethany (Director) on 2026-09-09.

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

24 Form 144 notices on file for LRCX worth $194.8M at the prices reported; 5 in the last 90 days worth $40.5M. Latest: BETHANY MAYER filed on 2026-09-09 to sell 9,557 shares ($3.0M) from 2026-09-09.

1 holder reports 5% or more of LRCX in its latest filing, on Schedule 13G (passive). The holder is Vanguard Capital Management at 7.5% of the class (93,575,293 shares), filed 2026-04-30 for an event on 2026-03-31.

12 of the 30 tracked managers held LRCX at their latest 13F, $8.83B in total at quarter-end prices. Coatue Management is the largest at $4.09B (8.4% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 7 cut.

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

In Q4 FY 2026 (quarter ended 2026-06-28) Lam Research reported revenue of $6.72B, up 30.0% from the same quarter a year earlier, and net income of $2.28B. In FY 2026 it generated $5.86B of operating cash flow and spent $3.85B on buybacks and $1.27B on dividends. As of 2026-06-28, cash was $5.58B against $3.72B of debt.

Quarterly, last 8 quarters

Fiscal years, with buybacks and dividends

Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-28; shares outstanding as of 2026-08-04 from the cover page.