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Rafferty Asset Management, LLC

Position in MPWR — Monolithic Power Systems, Inc.

CIK 1389426 New York, NY

Position in MPWR

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$347,109,104
-$12,230,007 QoQ
Shares Held
317,473
-19.9% QoQ
Ownership
0.646%
of shares outstanding
% of Portfolio
1.78%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in MPWR Over Time

Shares Held

Position Value (USD)

Position in Semiconductors

Technology · as of Mar 31, 2026

Rafferty Asset Management, LLC holds $7,562,304,887 across 23 Semiconductors names. MPWR ranks #10 (4.6% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in MPWR

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $347,109,104 317,473
2025-12-31 $359,339,111 396,464
2025-09-30 $349,215,323 379,318
2025-06-30 $386,990,711 529,124
2025-03-31 $225,528,122 388,855
2024-12-31 $248,037,681 419,195
2024-09-30 $361,543,290 391,069
2024-06-30 $324,798,600 395,286
2024-03-31 $288,281,500 425,558
2023-12-31 $192,357,622 304,952
2023-09-30 $121,767,030 263,565
2023-06-30 $149,967,848 277,600
2023-03-31 $106,648,556 213,067
2022-12-31 $64,149,097 181,412
2022-09-30 $58,509,580 161,006
2022-06-30 $63,897,343 166,382
2022-03-31 $96,726,571 199,157
2021-12-31 $79,997,899 162,159
2021-09-30 $53,056,950 109,468
2021-06-30 $54,468,429 145,852
2021-03-31 $45,089,728 127,657
2020-12-31 $19,936,828 54,438
2020-09-30 $15,268,383 54,606
2020-06-30 $11,403,966 48,118
2020-03-31 $2,484,436 14,836