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Equibles

JANE STREET GROUP, LLC

Position in MPWR — Monolithic Power Systems, Inc.

CIK 1595888 NEW YORK, NY
Back to MPWR Full portfolio

Position in MPWR

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$247,847,471
+$242,289,974 QoQ
Shares Held
179,293
+3427.3% QoQ
Ownership
0.365%
of shares outstanding
% of Portfolio
0.17%
of 13F equity value
Holder Rank
#39
of 1,244 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in MPWR Over Time

Shares Held

Position Value (USD)

Derivatives in MPWR

reported options exposure · as of Jun 30, 2026
CallValue
$166,989,088
CallShares
120,800
PutValue
$167,680,268
PutShares
121,300

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 Semiconductors

Technology · as of Jun 30, 2026

JANE STREET GROUP, LLC holds $11,974,282,121 across 58 Semiconductors names. MPWR ranks #17 (2.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 NVDA
Nvidia Corp
 11,805,610 $2,362,184,502
2 INTC
Intel Corp
 7,312,940 $1,021,105,811
3 AMD
Advanced Micro Devices Inc
 1,626,384 $944,782,727
4 MU
Micron Technology Inc
 699,000 $806,848,708
5 TSEM
Tower Semiconductor Ltd
 2,928,515 $763,288,148
6 QCOM
Qualcomm Inc/De
 2,988,580 $552,259,697
7 SMTC
Semtech Corp
 3,351,040 $542,365,823
8 TXN
Texas Instruments Inc
 1,688,867 $503,400,585

All Filings in MPWR

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $247,847,471 179,293
2026-06-30 $167,680,268 121,300
2026-06-30 $166,989,088 120,800
2026-03-31 $20,992,320 19,200
2026-03-31 $52,043,460 47,600
2026-03-31 $5,557,497 5,083
2025-12-31 $4,066,837 4,487
2025-12-31 $22,840,272 25,200
2025-12-31 $39,154,752 43,200
2025-09-30 $20,990,592 22,800
2025-09-30 $27,343,008 29,700
2025-09-30 $13,246,168 14,388
2025-06-30 $11,263,252 15,400
2025-06-30 $3,709,559 5,072
2025-06-30 $21,868,262 29,900
2025-03-31 $13,455,536 23,200
2025-03-31 $592,738 1,022
2025-03-31 $10,613,634 18,300
2024-12-31 $9,526,369 16,100
2024-12-31 $45,501,730 76,900
2024-12-31 $39,939,750 67,500
2024-09-30 $13,127,900 14,200
2024-09-30 $123,568,669 133,660
2024-09-30 $36,240,400 39,200
2024-06-30 $36,777,574 44,759
2024-03-31 $14,280,012 21,080
2023-12-31 $38,051,172 60,324
2023-09-30 $3,444,672 7,456
2023-06-30 $12,042,806 22,292
2023-03-31 $17,005,345 33,974
2022-12-31 $2,608,227 7,376
2022-09-30 $8,131,074 22,375
2022-06-30 $3,393,761 8,837
2022-03-31 $17,533,048 36,100
2022-03-31 $34,968,960 72,000
2022-03-31 $1,633,341 3,363
2021-12-31 $2,861,314 5,800
2021-12-31 $32,559,780 66,000
2021-12-31 $3,137,577 6,360
2021-09-30 $8,191,092 16,900
2021-09-30 $39,162,144 80,800
2021-09-30 $2,232,920 4,607
2021-06-30 $4,257,330 11,400
2021-06-30 $4,107,950 11,000
2021-03-31 $1,496,196 4,236
2021-03-31 $9,536,670 27,000
2021-03-31 $3,673,384 10,400
2020-12-31 $2,563,610 7,000
2020-12-31 $514,552 1,405
2020-12-31 $1,684,658 4,600