Rossby Financial
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Rossby Financial’s Lam Research LRCX Stock Holding History

Rossby Financial’s Portfolio LRCX Stock Details LRCX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$455K Buy
1,384
+3
+0.2% +$937 0.07% 273
2026
Q2 		$598K Sell
1,381
-87
-6% -$26.4K 0.11% 174
2026
Q1 		$326K Buy
1,468
+1,053
+254% +$235K 0.07% 260
2025
Q4 		$71K Sell
415
-18
-4% -$2.8K 0.02% 478
2025
Q3 		$61.8K Sell
433
-65
-13% -$6.88K 0.02% 503
2025
Q2 		$48.5K Sell
498
-16
-3% -$1.27K 0.02% 502
2025
Q1 		$36.7K Buy
+514
New +$40.5K 0.02% 528

Other funds holding LRCX

BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.27T AUM 50.62% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.96T AUM 27.49% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $234B AUM 43.58% 1-Year Est. Return

Rossby Financial's LRCX Position: Q3 2026 in Review

Rossby Financial increased its Lam Research (LRCX) stake by 0.22% in Q3 2026, buying an estimated $937 and bringing the position to 1,384 shares worth $455K. The position accounts for 0.07% of the portfolio, ranked #273.

Rossby Financial first reported a position in LRCX in Q1 2025 and has held it in 7 quarters since. The position peaked at $598K in Q2 2026. 2,587 funds tracked by Wall St. Rank hold LRCX as of Q3 2026.

  • Rossby Financial held 1,384 shares of Lam Research worth $455K as of Q3 2026.
  • Rossby Financial bought 3 Lam Research shares in Q3 2026, an estimated $937.
  • Lam Research made up 0.07% of Rossby Financial's portfolio in Q3 2026, its #273 holding.
  • Rossby Financial first reported a position in Lam Research in Q1 2025 and has held it in 7 quarters since.
  • Rossby Financial's Lam Research position peaked at $598K in Q2 2026.
  • 2,587 funds tracked by Wall St. Rank held Lam Research as of Q3 2026.

Based on Rossby Financial's 13F filing for Q3 2026, filed 5 Nov 2026.