LAM RESEARCH CORP · CUSIP 512807306 · CIK 923116
As of 2026-06-30, GROESBECK INVESTMENT MANAGEMENT CORP /NJ/ reported 22.29K LRCX (shares), valued at $9.66M, or 15.39% of its reported non-derivative portfolio. Filed 2026-07-15.
Verify history & sources →Shares decreased 7.43%; reported value increased 87.74%, and weight changed +5.37 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.
Left: % · Right: Shares · Independently scaled axes
Exact data and methodology
Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.
| Quarter | Weight | Quantity | Source |
|---|---|---|---|
| Q2 2026 | 15.39% | 22,294 | SEC filing ↗Filed Jul 15, 2026 |
| Q1 2026 | 10.02% | 24,083 | SEC filing ↗Filed Apr 22, 2026 |
| Q4 2025 | 8.13% | 25,170 | SEC filing ↗Filed Jan 21, 2026 |
| Q3 2025 | 6.59% | 25,224 | SEC filing ↗Filed Oct 23, 2025 |
| Q2 2025 | 5.05% | 29,550 | SEC filing ↗Filed Oct 23, 2025 |
| Q1 2025 | 3.14% | 30,910 | SEC filing ↗Filed Apr 29, 2025 |
| Q4 2024 | 3.00% | 31,940 | SEC filing ↗Filed Jan 27, 2025 |
| Q3 2024 | Not reported | Not reported | — |
| Q2 2024 | Not reported | Not reported | — |
| Q1 2024 | Not reported | Not reported | — |
| Q4 2023 | Not reported | Not reported | — |
| Q3 2023 | Not reported | Not reported | — |
History & evidence by quarter
| Quarter | Weight | Quantity | Value | Change explained | Source |
|---|---|---|---|---|---|
| Q3 2023 | Not reported | — | — | This security is absent from this quarter's filing; a missing record is not treated as zero holdings. | — |
| Q4 2023 | Not reported | — | — | This security is absent from this quarter's filing; a missing record is not treated as zero holdings. | — |
| Q1 2024 | Not reported | — | — | This security is absent from this quarter's filing; a missing record is not treated as zero holdings. | — |
| Q2 2024 | Not reported | — | — | This security is absent from this quarter's filing; a missing record is not treated as zero holdings. | — |
| Q3 2024 | Not reported | — | — | This security is absent from this quarter's filing; a missing record is not treated as zero holdings. | — |
| Q4 2024 | 3.00% | 31,940 | $2.31M | A comparable prior-quarter record is unavailable; changes are not inferred. | SEC filing ↗ Filed Jan 27, 2025 |
| Q1 2025 | 3.14% | 30,910 | $2.25M | Shares decreased 3.22%; reported value decreased 2.60%, and weight changed +0.14 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Apr 29, 2025 |
| Q2 2025 | 5.05% | 29,550 | $2.88M | Shares decreased 4.40%; reported value increased 27.99%, and weight changed +1.91 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Oct 23, 2025 |
| Q3 2025 | 6.59% | 25,224 | $3.38M | Shares decreased 14.64%; reported value increased 17.42%, and weight changed +1.54 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Oct 23, 2025 |
| Q4 2025 | 8.13% | 25,170 | $4.31M | Shares decreased 0.21%; reported value increased 27.60%, and weight changed +1.54 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Jan 21, 2026 |
| Q1 2026 | 10.02% | 24,083 | $5.15M | Shares decreased 4.32%; reported value increased 19.42%, and weight changed +1.89 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Apr 22, 2026 |
| Q2 2026 | 15.39% | 22,294 | $9.66M | Shares decreased 7.43%; reported value increased 87.74%, and weight changed +5.37 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Jul 15, 2026 |
Take these holdings further.
This page includes 12 of 12 reported holdings. Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
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Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.