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Parallax Volatility Advisers, L.P.

Position in LRCX — Lam Research Corp

CIK 1521001 San Francisco, CA

Position in LRCX

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$30,433,199
+$28,793,573 QoQ
Shares Held
70,231
+815.2% QoQ
Ownership
0.006%
of shares outstanding
% of Portfolio
1.50%
of 13F equity value
Holder Rank
#514
of 3,114 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in LRCX Over Time

Shares Held

Position Value (USD)

Derivatives in LRCX

reported options exposure · as of Jun 30, 2026
CallValue
$12,133,240
CallShares
28,000
PutValue
$7,366,610
PutShares
17,000

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Semiconductor Equipment & Materials

Technology · as of Jun 30, 2026

Parallax Volatility Advisers, L.P. holds $99,850,985 across 5 Semiconductor Equipment & Materials names. LRCX ranks #2 (30.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 LRCX
Lam Research Corp
This page
70,231 $30,433,199

All Filings in LRCX

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50 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $7,366,610 17,000
2026-06-30 $30,433,199 70,231
2026-06-30 $12,133,240 28,000
2026-03-31 $20,981,412 98,200
2026-03-31 $1,639,626 7,674
2026-03-31 $22,562,496 105,600
2025-12-31 $945,427 5,523
2025-12-31 $33,431,454 195,300
2025-12-31 $17,409,006 101,700
2025-09-30 $17,755,140 132,600
2025-09-30 $19,522,620 145,800
2025-06-30 $6,424,440 66,000
2025-06-30 $15,204,508 156,200
2025-03-31 $49,363,300 679,000
2025-03-31 $199,052 2,738
2025-03-31 $26,869,920 369,600
2024-12-31 $70,409,804 974,800
2024-12-31 $23,221,945 321,500
2024-09-30 $45,292,440 55,500
2024-09-30 $4,821,400 5,908
2024-09-30 $15,097,480 18,500
2024-06-30 $3,249,922 3,052
2024-06-30 $57,075,960 53,600
2024-06-30 $9,051,225 8,500
2024-03-31 $6,136,436 6,316
2024-03-31 $14,184,922 14,600
2024-03-31 $388,628 400
2023-12-31 $41,591,106 53,100
2023-12-31 $39,711,282 50,700
2023-09-30 $30,272,991 48,300
2023-09-30 $38,859,740 62,000
2023-06-30 $24,685,824 38,400
2023-06-30 $15,235,782 23,700
2023-03-31 $54,549,348 102,900
2023-03-31 $21,734 41
2023-03-31 $31,860,212 60,100
2022-12-31 $153,283,410 364,700
2022-12-31 $3,782 9
2022-12-31 $162,025,650 385,500
2022-09-30 $3,294 9
2022-09-30 $68,295,600 186,600
2022-09-30 $40,552,800 110,800
2022-06-30 $32,557,860 76,400
2022-06-30 $32,003,865 75,100
2022-06-30 $79,263 186
2022-03-31 $76,501,903 142,300
2022-03-31 $104,242,579 193,900
2022-03-31 $3,272,969 6,088
2021-12-31 $16,518,156 22,969
2021-12-31 $31,930,260 44,400