SEC 13F Intelligence

William Blair Investment Management, LLC / LRCX

William Blair Investment Management, LLC’s Lam Research Corp Position

Does William Blair Investment Management, LLC own Lam Research Corp (LRCX)? Yes — 79.4K shares worth $17M (+0.06% of its 13F portfolio) as of Q1 2026, down from 110.7K shares the prior filed quarter.

Position Value
$17M
Q1 2026
Shares
79.4K
% of Portfolio
+0.06%
Quarters Held
6
currently held

Position History LRCX

Reported value by quarter
Q4 ’24: $246MQ4 ’24Q1 ’25: $242MQ1 ’25Q2 ’25: $186MQ2 ’25Q3 ’25: $247MQ3 ’25Q4 ’25: $19MQ4 ’25Q1 ’26: $17MQ1 ’26filingsflow.com
QuarterSharesValue% of Portfolio
Q1 202679.4K$17M+0.06%
Q4 2025110.7K$19M+0.05%
Q3 20251.84M$247M+0.64%
Q2 20251.91M$186M+0.49%
Q1 20253.32M$242M+0.68%
Q4 20243.41M$246M+0.60%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See William Blair Investment Management, LLC’s full portfolio or all institutional holders of LRCX.