LRCX — LAM RESEARCH CORPToday's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.

Congress trades
97
all time
Members · 12m
6
4 buys · 10 sells · by trade date
Latest filing
09-02
2026-09-02
Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
12
13F holders
2,196
top 500 listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29
Congress 97Institutional 500

Congress · disclosure timeline

By trade date · 24 months · 42 rows ▲ buy, ▼ sell; height = lower bound (log scale). Trade date, not filing date — the filing lag is in the table below.

42 dated disclosures in the window, placed by trade date; magnitudes are the disclosed lower bounds, against gridlines at $15K, $250K, $5M.

Members active in LRCX

12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).
Members disclosing LRCX in the trailing 12 months
MemberRowsNet disclosed flow for this ticker: purchases minus sales, computed as a net range on the disclosed amounts. A lower bound is provable, never a point.Number of committees the member sat on as of their latest trade date in the window, from the cc0-legislators roster snapshot. Context, never an allegation; jurisdiction overlap needs the sector join.
David J. Taylor R–OH-29−$189K to −$21.0K2
Alan Armstrong R–OK1$1.0K to $15.0K2
Cleo Fields D–LA-61$15.0K to $50.0K1
John Boozman R–AR1−$15.0K to −$1.0K6
Markwayne Mullin R–OK1$50.0K to $100K—
Sheldon Whitehouse D–RI1−$15.0K to −$1.0K6

6 members

Congressional disclosures

Newest filed firstAll 97 rows ↗
Latest congressional filings mentioning LRCX
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2026-09-02Sheldon Whitehouse D–RISELL partial · SP (partial sale, spouse-owned)Traded 08-13 +20d$1K–$15K
2026-07-21Alan Armstrong R–OKBUYTraded 03-27 LATE·116d$1K–$15K
2026-06-12David J. Taylor R–OH-2SELLTraded 06-05 +7d$1K–$15K
2026-05-07David J. Taylor R–OH-2SELLTraded 04-27 +10d$1K–$15K
2026-05-07David J. Taylor R–OH-2SELLTraded 04-27 +10d$1K–$15K
2026-03-20David J. Taylor R–OH-2BUYTraded 03-12 +8d$1K–$15K
2026-03-06David J. Taylor R–OH-2SELLTraded 02-26 +8d$1K–$15K
2026-03-06David J. Taylor R–OH-2SELLTraded 02-26 +8d$1K–$15K
2026-02-24Cleo Fields D–LA-6BUYTraded 02-03 +21d$15K–$50K
2026-02-15John Boozman R–ARSELL partial · JT (partial sale, jointly owned)Traded 01-08 +38d$1K–$15K

13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only

All holders ↗
Top institutional holders of LRCX for quarter 2026-03-31, 1–25 of 2,196 holders
#FilerValueSecuritiesFlagsderived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date (the full holders view shows them), but no document links — the EDGAR link opens the filer's 13F list·§
1BlackRock, Inc.$28.4B1
derived ·§ EDGAR ↗
2VANGUARD CAPITAL MANAGEMENT LLC$17.3B1
derived ·§ EDGAR ↗
3STATE STREET CORP$12.7B1
derived ·§ EDGAR ↗
4VANGUARD PORTFOLIO MANAGEMENT LLC$7.9B1
derived ·§ EDGAR ↗
5GEODE CAPITAL MANAGEMENT, LLC$7.5B1
derived ·§ EDGAR ↗
6FMR LLC$7.2B1
derived ·§ EDGAR ↗
7JPMORGAN CHASE & CO$6.5B1
derived ·§ EDGAR ↗
8Invesco Ltd.$5.2B1
derived ·§ EDGAR ↗
9AMERIPRISE FINANCIAL INC$4.4B1
derived ·§ EDGAR ↗
10MORGAN STANLEY$4.1B1
derived ·§ EDGAR ↗
11NORTHERN TRUST CORP$3.0B1
derived ·§ EDGAR ↗
12UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$2.9B1
derived ·§ EDGAR ↗
13ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$2.8B1
derived ·§ EDGAR ↗
14FRANKLIN RESOURCES INC$2.5B1
derived ·§ EDGAR ↗
15Legal & General Group Plc$2.4B1
derived ·§ EDGAR ↗
16Nuveen, LLC$2.4B1
derived ·§ EDGAR ↗
17BANK OF AMERICA CORP /DE/$2.3B1
derived ·§ EDGAR ↗
18Amundi$2.2B1
derived ·§ EDGAR ↗
19COATUE MANAGEMENT LLC$2.1B1
derived ·§ EDGAR ↗
20Janus Henderson Group Ltd.$2.0B1
derived ·§ EDGAR ↗
21Bank of New York Mellon Corp$1.9B1
derived ·§ EDGAR ↗
22CHARLES SCHWAB INVESTMENT MANAGEMENT INC$1.7B1
derived ·§ EDGAR ↗
23VANGUARD FIDUCIARY TRUST CO$1.5B1
derived ·§ EDGAR ↗
24Grantham, Mayo, Van Otterloo & Co. LLC$1.5B1
derived ·§ EDGAR ↗
25UBS Group AG$1.4B1
derived ·§ EDGAR ↗
Show the top 500 of 2,196 holders
Truncated by Public Filings. Top 500 of 2,196 holders shown; the rest are on EDGAR. Method ↗

Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.

Congress ↔ notable managers · LRCX

Congress · last 90 days

Buyers
0 — —
Sellers
1 Sheldon Whitehouse D–RI $1K–$15K

filed 2026-07-31 → 2026-10-29 · statutory ranges

Notable managers · quarter ended 2026-03-31

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · LAM RESEARCH CORP

Merged timeline of congressional filings and notable-manager moves on LRCX
DateWhoChangeSize
2026-09-02Sheldon Whitehouse CongressSELL$1K–$15K
2026-05-15Coatue Management 13FADD+237,940 sh
2026-05-15Gotham Asset Management 13FADD+2,319 sh
2026-05-15Tudor Investment Corp 13FNEW+188,579 sh
2026-05-15Third Point 13FNEW+75,000 sh
2026-05-15Bridgewater Associates 13FTRIM−1,470,432 sh
2026-05-15Appaloosa 13FTRIM−42,500 sh
2026-05-15Moore Capital Management 13FTRIM−28,598 sh
2026-05-14Caxton Associates 13FNEW+9,341 sh

9 newest, by filing date · 13F rows are quarter-end snapshots, not trades

Congress vs filers

12 months
Congress net (rows)4 buy / 10 sell
Congress net ($ bound)−$153K to $142K
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.