Castleark Management’s Lam Research LRCX Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $123M | Sell |
283,808
-52,932
| -16% | -$16.1M | 3.32% | 4 |
|
|
2026
Q1 | $71.9M | Sell |
336,740
-36,136
| -10% | -$8.08M | 2.38% | 7 |
|
|
2025
Q4 | $63.8M | Sell |
372,876
-131,244
| -26% | -$20.4M | 1.87% | 12 |
|
|
2025
Q3 | $67.5M | Sell |
504,120
-18,530
| -4% | -$1.96M | 1.89% | 12 |
|
|
2025
Q2 | $50.9M | Buy |
522,650
+295,712
| +130% | +$23.5M | 1.53% | 17 |
|
|
2025
Q1 | $16.5M | Buy |
226,938
+105,658
| +87% | +$8.32M | 0.57% | 31 |
|
|
2024
Q4 | $8.76M | Sell |
121,280
-438,510
| -78% | -$33.3M | 0.31% | 54 |
|
|
2024
Q3 | $45.7M | Sell |
559,790
-8,230
| -1% | -$716K | 1.86% | 13 |
|
|
2024
Q2 | $60.5M | Buy |
568,020
+26,000
| +5% | +$2.49M | 2.47% | 8 |
|
|
2024
Q1 | $52.7M | Buy |
542,020
+14,100
| +3% | +$1.24M | 2.19% | 11 |
|
|
2023
Q4 | $41.3M | Sell |
527,920
-7,030
| -1% | -$479K | 1.83% | 14 |
|
|
2023
Q3 | $33.5M | Sell |
534,950
-51,100
| -9% | -$3.36M | 1.71% | 17 |
|
|
2023
Q2 | $37.7M | Buy |
586,050
+1,300
| +0.2% | +$73.3K | 1.71% | 15 |
|
|
2023
Q1 | $31M | Sell |
584,750
-9,150
| -2% | -$449K | 1.52% | 20 |
|
|
2022
Q4 | $25M | Sell |
593,900
-203,000
| -25% | -$8.49M | 1.3% | 20 |
|
|
2022
Q3 | $29.2M | Sell |
796,900
-174,700
| -18% | -$7.78M | 1.62% | 19 |
|
|
2022
Q2 | $41.4M | Buy |
971,600
+46,300
| +5% | +$2.2M | 2.22% | 13 |
|
|
2022
Q1 | $49.7M | Sell |
925,300
-49,300
| -5% | -$2.87M | 2.15% | 11 |
|
|
2021
Q4 | $70.1M | Sell |
974,600
-2,100
| -0.2% | -$132K | 2.58% | 6 |
|
|
2021
Q3 | $55.6M | Sell |
976,700
-132,450
| -12% | -$8.06M | 2.13% | 9 |
|
|
2021
Q2 | $72.2M | Sell |
1,109,150
-79,500
| -7% | -$5.02M | 2.42% | 6 |
|
|
2021
Q1 | $70.8M | Sell |
1,188,650
-38,650
| -3% | -$2.11M | 2.55% | 4 |
|
|
2020
Q4 | $58M | Buy |
1,227,300
+207,300
| +20% | +$8.72M | 2.17% | 6 |
|
|
2020
Q3 | $33.8M | Buy |
1,020,000
+106,900
| +12% | +$3.68M | 1.33% | 17 |
|
|
2020
Q2 | $29.5M | Buy |
913,100
+135,200
| +17% | +$3.69M | 1.28% | 18 |
|
|
2020
Q1 | $18.7M | Buy |
777,900
+757,500
| +3,713% | +$21.8M | 1.11% | 24 |
|
|
2019
Q4 | $596K | Buy |
20,400
+9,200
| +82% | +$244K | 0.02% | 270 |
|
|
2019
Q3 | $259K | Buy |
+11,200
| New | +$235K | 0.01% | 315 |
|
|
2018
Q3 | – | Sell |
-5,800
| Closed | -$100K | – | 393 |
|
|
2018
Q2 | $100K | Hold |
5,800
| – | – | ﹤0.01% | 358 |
|
|
2018
Q1 | $118K | Buy |
+5,800
| New | +$115K | ﹤0.01% | 390 |
|
Other funds holding LRCX
Castleark Management's LRCX Position: Q2 2026 in Review
Castleark Management reduced its Lam Research (LRCX) stake by 16% in Q2 2026, selling an estimated $16.1M and leaving 283,808 shares worth $123M. The position accounts for 3.32% of the portfolio, ranked #4.
Castleark Management first reported a position in LRCX in Q1 2018 and has held it in 30 quarters since. 3,137 funds tracked by Wall St. Rank hold LRCX as of Q2 2026.
- Castleark Management held 283,808 shares of Lam Research worth $123M as of Q2 2026.
- Castleark Management sold 52,932 Lam Research shares in Q2 2026, an estimated $16.1M.
- Lam Research made up 3.32% of Castleark Management's portfolio in Q2 2026, its #4 holding.
- Castleark Management first reported a position in Lam Research in Q1 2018 and has held it in 30 quarters since.
- 3,137 funds tracked by Wall St. Rank held Lam Research as of Q2 2026.
Based on Castleark Management's 13F filing for Q2 2026, filed 14 Aug 2026.