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Lam Research

2,106 hedge funds and large institutions have $136B invested in Lam Research in 2025 Q3 according to their latest regulatory filings, with 349 funds opening new positions, 766 increasing their positions, 729 reducing their positions, and 93 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

5% more repeat investments, than reductions

Existing positions increased: 766 | Existing positions reduced: 729

1.76% less ownership

Funds ownership: 82.54%80.78% (-1.8%)

16% less call options, than puts

Call options by funds: $2.73B | Put options by funds: $3.24B

Holders
2,106
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
82
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$2.73B
Puts
$3.24B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
476
$10.1M
477
$10.1M
478
$10.1M
479
$10M
480
$10M
481
$10M
482
$10M
483
$10M
484
$9.98M
485
$9.93M
486
$9.92M
487
$9.86M
488
$9.86M
489
$9.84M
490
$9.75M
491
$9.59M
492
$9.5M
493
$9.45M
494
$9.37M
495
$9.37M
496
$9.31M
497
$9.27M
498
$9.23M
499
$9.07M
500
$9.03M