★
Trade Filings
Managers Stocks Filings Superinvestors
Signals Institutional Buying Institutional Selling Insider Activity 13D & 13G Watch Sector Rotation
Tools Stock Screener Manager Screener Compare Managers Consensus Baskets All Research Tools Data API
Learn & AI Learn Ask the Data AI Agents
News ★ Saved
About About us Methodology Contact Disclaimer
Reader
DATA PLANS

Historical data downloads: coming with accounts.

API GATEWAY

Free read-only JSON access to the site's cached data.

Dark mode

Guided View
New to markets (prices, yields, YTD, market cap)? We explain every term as you browse, in plain English. Same data, with the help built in.

Expert View
You already know the market. Just the data: clean, fast and compact, with no extra explanations. This is the default view.

Interface language
Security record · archived quarter

LRCX

Lam Research Corporation · Technology · Semiconductors

263.94 -4.9% mkt cap $330.30B quote delayed (FMP) · as of Oct 18 03:59 UTC · separate from filing data below

Q3 2026 Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024
22Tracked holders
+1Δ holders
431.40MShares held
$42.00BReported value
+1New positions
−0Exits
Rising Conviction score 45/100 How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth +4.8% · share flow +1.2% · net new positions +4.5% · formula
Broad accumulation: rising shares across more holders

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q3 2026 4 0 1.78M $563.91M n/a n/a
Q2 2026 187 +2 874.58M $377.14B +7 −4
Q1 2026 187 +3 858.08M $182.68B +5 −3
Q4 2025 183 +1 943.75M $161.20B +2 n/a
Q3 2025 25 +1 512.14M $68.58B +1 −1
Q2 2025 22 +1 431.40M $42.00B +1 n/a
Q1 2025 18 -1 148.02M $10.77B +1 −2
Q4 2024 19 +1 163.00M $11.78B +1 n/a
Q3 2024 17 -2 10.47M $8.54B n/a −2
Q2 2024 19 n/a 11.74M $12.50B n/a n/a
Holder count
Who holds it · Q2 2025
#ManagerSharesΔ sharesValueTheir weightHeld
1 The Vanguard Group ✦ (passive) 130.61M n/a $12.71B 0.2% n/c 1 SEC ↗ ×6
2 BlackRock ✦ (passive) 122.20M n/a $11.90B 0.2% n/c 1 SEC ↗ ×23
3 State Street Global Advisors ✦ (passive) 59.55M +1.1% $5.81B 0.2% ▲ Add 3 SEC ↗
4 Geode Capital Management ✦ (passive) 33.80M +3.5% $3.28B 0.2% ▲ Add 5 SEC ↗ ×2
5 Fidelity (FMR) ✦ 25.65M n/a $2.50B 0.1% n/c 1 SEC ↗ ×6
6 Norges Bank ✦ (passive) 19.46M -1.6% $1.89B 0.2% ▼ Trim 5 SEC ↗
7 Coatue Management ✦ 10.51M +28.0% $1.02B 2.8% ▲ Add 5 SEC ↗ ×6
8 T. Rowe Price ✦ 6.88M +19.9% $669.69M 0.1% ▲ Add 5 SEC ↗ ×2
9 Citadel Advisors ✦ 6.37M -4.3% $619.99M 0.5% ▼ Trim 5 SEC ↗ ×2
10 Tiger Global Management ✦ 5.26M +18.9% $512.04M 1.5% ▲ Add 5 SEC ↗
11 Millennium Management ✦ 1.94M -10.3% $188.74M 0.2% ▼ Trim 5 SEC ↗
12 Bridgewater Associates ✦ 1.64M -16.4% $159.52M 0.6% ▼ Trim 5 SEC ↗
13 Marshall Wace ✦ 1.50M +77.5% $146.21M 0.2% ▲ Add 2 SEC ↗ ×2
14 AQR Capital Management ✦ 1.48M +63.6% $144.05M 0.1% ▲ Add 5 SEC ↗ ×7
15 Adage Capital Partners ✦ 1.41M -0.3% $137.05M 0.2% ▼ Trim 5 SEC ↗
16 Arrowstreet Capital ✦ 1.29M New $125.27M 0.1% New 1 SEC ↗
17 Wellington Management ✦ 460.49K -79.8% $44.82M 0.0% ▼ Trim 5 SEC ↗ ×5
18 Fisher Asset Management ✦ 449.51K -51.1% $43.76M 0.0% ▼ Trim 5 SEC ↗
19 Appaloosa ✦ 400.00K -20.0% $38.94M 0.6% ▼ Trim 5 SEC ↗
20 Two Sigma Investments ✦ 303.89K +18.4% $29.58M 0.1% ▲ Add 5 SEC ↗
21 D. E. Shaw & Co. ✦ 165.81K -44.9% $16.14M 0.0% ▼ Trim 3 SEC ↗ ×2
22 Gotham Asset Management ✦ 67.53K -24.3% $6.57M 0.0% ▼ Trim 5 SEC ↗

“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.

New buyers

Arrowstreet Capital $125.27M 0.1%

Exited

No tracked exits this quarter.

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 2,586 holders, 976.87M shares, $200.48B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.

Insider transactions

Open-market purchases (P)

No open-market insider purchases in our coverage window.

Open-market sales (S)

Sep 09 ARCHER TIMOTHY

Officer · 30.00K sh · $9.58M

Sep 09 Mayer Bethany

Director · 9.56K sh · $3.01M

Aug 31 Harter Ava

Officer · 5.00K sh · $1.51M

Awards, exercises and tax withholding are never counted as buys or sales here. Methodology

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q2 2025 · Methodology · Get this via the API