CapitolRadar tracks every publicly disclosed LRCX trade by US congress members and corporate insiders: 48 disclosed trades (30 buys, 18 sells) by 6 tracked traders, from 2020-02-28 to 2026-08-13. Updated daily from official filings.
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Lam Research Corporation (LRCX) — Technology · Semiconductors, market cap about $400.9B.
Cluster watch: 2 distinct tracked traders disclosed buying LRCX in the last 45 days: Varadarajan Seshasayee (officer: Senior Vice President), ARCHER TIMOTHY (officer: President and CEO).
CapitolRadar analysis
48 disclosed LRCX trades, led by 30 buys
48 trades in Lam Research Corporation were tracked from February 28, 2020 through August 13, 2026. The activity comprised 30 buys and 18 sells by 6 distinct traders. Buys therefore accounted for 62.5% of the tracked transactions, although the six-trader sample is small and transaction counts do not indicate the capital committed.
The supplied quarterly breakdown shows uneven activity. There were 5 trades in 2024 Q1, including 4 buys, and 5 in 2024 Q4, including 3 buys. Other listed quarters had between one and three trades: 2024 Q3 had 3 trades and 2 buys; 2025 Q2 had 3 and 2; 2023 Q3 and Q4 each had 2 trades and 1 buy. The single 2025 Q4 trade was a buy, while the single 2026 Q3 trade was not a buy. These quarterly samples are too small to establish a durable pattern.
17 Ro Khanna buys stand out among named buyers
Ro Khanna recorded 17 buys, the largest named total, with the latest dated November 15, 2024. Markwayne Mullin recorded 5 buys, most recently December 29, 2025. Marjorie Taylor Greene and Josh Gottheimer each recorded 4 buys, with their latest purchases dated April 4, 2025 and January 25, 2024, respectively. Together, these four named buyers account for all 30 tracked buys, but the overall trader pool remains limited.
2 buyers also appeared in each of six other stocks
2 of the LRCX buyers also bought each of ADI, GOOGL, MSFT, SNDK, AMD and RSG. This overlap identifies shared disclosed holdings activity, not a stated rationale or coordinated strategy.
Disclosure timing and values require caution: transactions can be reported with a 45-day disclosure lag, so the latest filing record may not reflect the latest trading activity. Disclosed transaction amounts are generally presented as ranges, making any dollar-value totals estimates rather than exact figures.
Analysis written from the tracked record on 2026-10-13; it is refreshed whenever the underlying numbers change.
Activity by quarter
| Quarter | Disclosed trades | Buys | Sells |
|---|---|---|---|
| 2026 Q3 | 1 | 0 | 1 |
| 2025 Q4 | 1 | 1 | 0 |
| 2025 Q2 | 3 | 2 | 1 |
| 2024 Q4 | 5 | 3 | 2 |
| 2024 Q3 | 3 | 2 | 1 |
| 2024 Q1 | 5 | 4 | 1 |
| 2023 Q4 | 2 | 1 | 1 |
| 2023 Q3 | 2 | 1 | 1 |
Who is buying LRCX?
| Trader | Disclosed buys | Last buy | Grade |
|---|---|---|---|
| Ro Khanna | 17 | 2024-11-15 | — |
| Markwayne Mullin | 5 | 2025-12-29 | — |
| Marjorie Taylor Greene | 4 | 2025-04-04 | — |
| Josh Gottheimer | 4 | 2024-01-25 | — |
Disclosed trades in LRCX
| Date | Who | Type | Amount | 30d vs SPY |
|---|---|---|---|---|
| 2026-08-13 | Sheldon Whitehouse | sell | $1,001 - $15,000 | — |
| 2025-12-29 | Markwayne Mullin | buy | $50,001 - $100,000 | — |
| 2025-05-13 | Markwayne Mullin | buy | $15,001 - $50,000 | — |
| 2025-04-08 | Markwayne Mullin | sell | $50,001 - $100,000 | — |
| 2025-04-04 | Marjorie Taylor Greene | buy | $1,001 - $15,000 | — |
| 2024-11-25 | Marjorie Taylor Greene | buy | $1,001 - $15,000 | — |
| 2024-11-15 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2024-10-22 | Josh Gottheimer | sell | $1,001 - $15,000 | — |
| 2024-10-17 | Josh Gottheimer | sell | $1,001 - $15,000 | — |
| 2024-10-04 | Marjorie Taylor Greene | buy | $1,001 - $15,000 | — |
| 2024-09-23 | Josh Gottheimer | sell | $1,001 - $15,000 | — |
| 2024-09-20 | Marjorie Taylor Greene | buy | $1,001 - $15,000 | — |
| 2024-09-09 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2024-03-20 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2024-01-25 | Josh Gottheimer | buy | $1,001 - $15,000 | — |
| 2024-01-19 | Tommy Tuberville | sell | $1,001 - $15,000 | — |
| 2024-01-10 | Ro Khanna | buy | $1,001 - $15,000 | — |
| 2024-01-02 | Markwayne Mullin | buy | $15,001 - $50,000 | — |
| 2023-10-10 | Ro Khanna | sell | $15,001 - $50,000 | — |
| 2023-10-03 | Markwayne Mullin | buy | $1,001 - $15,000 | — |
CapitolRadar signal history
NEW PICK 2026-09-03
Lam Research Senior Vice President Varadarajan Seshasayee disclosed a roughly $734,740 stock purchase. The panel passed mainly because he has no verified trading history against SPY, leaving this insider signal unproven despite its size and prompt disclosure. A verified record showing that his earlier purchases consistently outperformed SPY would have been the strongest evidence to change the verdict.
These buyers also bought
Other stocks the tracked buyers of LRCX disclosed buying in the last six months: RSG (2) · AMD (2) · ADI (2) · MSFT (2) · GOOGL (2) · SNDK (2).
About Lam Research Corporation
Lam Research Corporation is a prominent supplier of equipment vital for semiconductor processing, encompassing its design, production, sales, repair, and ongoing maintenance. These sophisticated systems are fundamental for the creation of integrated circuits. The company's extensive product catalog features a variety of deposition technologies. For tungsten metallization, they provide ALTUS systems that deposit conformal films. SABRE products excel in electrochemical deposition, crucial for copper interconnect transitions and enabling copper damascene manufacturing. SOLA utilizes ultraviolet t…
Frequently asked questions
Which politicians bought LRCX most?
Ro Khanna leads with 17 disclosed buys, followed by Markwayne Mullin.
How current is this page?
It re-renders from the tracked record on every view and new filings are ingested daily — but STOCK Act disclosures can lag the trade by up to 45 days, so the most recent weeks are always incomplete.
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CapitolRadar tracks publicly disclosed trades (STOCK Act filings and SEC Form 4). Disclosures can lag the trade by up to 45 days. Backtests measure past disclosed buys against the S&P 500 and do not predict future results. Everything on this page is impersonal information for your own research — not investment advice.