Monolithic Power Systems, Inc.
MX ˙ BMV ˙ US6098391054
SecurityMX:MPWR / Monolithic Power Systems, Inc.
InstitutionProfund Advisors Llc
Latest Disclosed Ownership5,905 shares
Latest Disclosed Value $ 6,456,232
Profund Advisors Llc reports 16.73% decrease in ownership of MPWR / Monolithic Power Systems, Inc.

On April 24, 2026 - Profund Advisors Llc filed a 13F-HR form disclosing ownership of 5,905 shares of Monolithic Power Systems, Inc. (MX:MPWR) valued at $6,456,232 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 7,091 shares of Monolithic Power Systems, Inc.. This represents a change in shares of -16.73% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-24 2026-03-31 13F MONOLITHIC PWR SYS COM 609839105 5,905 -1,186 -16.73 6,456 0.47 0.2370
2026-02-06 2025-12-31 13F MONOLITHIC PWR SYS COM 609839105 7,091 3,849 118.72 6,427 115.35 0.1953
2025-11-06 2025-09-30 13F MONOLITHIC PWR SYS COM 609839105 3,242 117 3.74 2,985 30.59 0.0970
2025-08-07 2025-06-30 13F MONOLITHIC PWR SYS COM 609839105 3,125 3 0.10 2,286 26.24 0.0823
2025-05-08 2025-03-31 13F MONOLITHIC PWR SYS COM 609839105 3,122 -531 -14.54 1,811 -16.24 0.0787
2025-02-14 2024-12-31 13F MONOLITHIC PWR SYS COM 609839105 3,653 -252 -6.45 2,161 -40.14 0.0789
2024-11-14 2024-09-30 13F MONOLITHIC PWR SYS COM 609839105 3,905 -536 -12.07 3,610 -1.07 0.1366
2024-08-13 2024-06-30 13F MONOLITHIC PWR SYS COM 609839105 4,441 561 14.46 3,649 38.85 0.1353
2024-05-08 2024-03-31 13F MONOLITHIC PWR SYS COM 609839105 3,880 654 20.27 2,628 29.20 0.1023
2024-02-14 2023-12-31 13F MONOLITHIC PWR SYS COM 609839105 3,226 294 10.03 2,035 50.22 0.0874
2023-11-13 2023-09-30 13F MONOLITHIC PWR SYS COM 609839105 2,932 210 7.71 1,355 -7.89 0.0749
2023-08-10 2023-06-30 13F MONOLITHIC PWR SYS COM 609839105 2,722 471 20.92 1,471 30.55 0.0789
2023-05-12 2023-03-31 13F MONOLITHIC PWR SYS COM 609839105 2,251 564 33.43 1,127 88.93 0.0696
2023-02-02 2022-12-31 13F MONOLITHIC PWR SYS COM 609839105 1,687 -30 -1.75 597 -4.49 0.0387
2022-11-07 2022-09-30 13F MONOLITHIC PWR SYS COM 609839105 1,717 -95 -5.24 624 -10.34 0.0449
2022-08-01 2022-06-30 13F MONOLITHIC PWR SYS COM 609839105 1,812 -397 -17.97 696 -35.14 0.0442
2022-05-10 2022-03-31 13F MONOLITHIC PWR SYS COM 609839105 2,209 -553 -20.02 1,073 -21.28 0.0451
2022-02-08 2021-12-31 13F MONOLITHIC PWR SYS COM 609839105 2,762 403 17.08 1,363 19.25 0.0446
2021-11-12 2021-09-30 13F MONOLITHIC PWR SYS COM 609839105 2,359 192 8.86 1,143 41.29 0.0385
2021-08-12 2021-06-30 13F MONOLITHIC PWR SYS COM 609839105 2,167 9 0.42 809 6.17 0.0272
2021-05-14 2021-03-31 13F MONOLITHIC PWR SYS COM 609839105 2,158 -3,381 -61.04 762 -62.44 0.0293
2021-02-09 2020-12-31 13F MONOLITHIC PWR SYS COM 609839105 5,539 316 6.05 2,029 38.97 0.0887
2020-11-13 2020-09-30 13F MONOLITHIC PWR SYS COM 609839105 5,223 1,495 40.10 1,460 65.16 0.0751
2020-08-03 2020-06-30 13F MONOLITHIC PWR SYS COM 609839105 3,728 -1,682 -31.09 884 -2.43 0.0492
2020-05-15 2020-03-31 13F MONOLITHIC PWR SYS COM 609839105 5,410 -2,935 -35.17 906 -39.03 0.0680
2020-02-18 2019-12-31 13F MONOLITHIC PWR SYS COM 609839105 8,345 3,192 61.94 1,486 85.29 0.0647
2019-11-12 2019-09-30 13F MONOLITHIC PWR SYS COM 609839105 5,153 -345 -6.28 802 7.36 0.0406
2019-08-13 2019-06-30 13F MONOLITHIC PWR SYS COM 609839105 5,498 -900 -14.07 747 -13.84 0.0354
2019-05-15 2019-03-31 13F MONOLITHIC PWR SYS COM 609839105 6,398 2,365 58.64 867 84.86 0.0417
2019-02-14 2018-12-31 13F MONOLITHIC PWR SYS COM 609839105 4,033 -2,861 -41.50 469 -45.78 0.0290
2018-11-13 2018-09-30 13F MONOLITHIC PWR SYS COM 609839105 6,894 -6,126 -47.05 865 -50.29 0.0328
2018-08-13 2018-06-30 13F MONOLITHIC PWR SYS COM 609839105 13,020 -2,417 -15.66 1,740 -2.63 0.0695
2018-05-14 2018-03-31 13F MONOLITHIC PWR SYS COM 609839105 15,437 1,173 8.22 1,787 11.48 0.0711
2018-02-14 2017-12-31 13F MONOLITHIC PWR SYS COM 609839105 14,264 2,069 16.97 1,603 23.40 0.0618
2017-11-13 2017-09-30 13F MONOLITHIC PWR SYS COM 609839105 12,195 7,401 154.38 1,299 181.17 0.0541
2017-08-11 2017-06-30 13F MONOLITHIC PWR SYS COM 609839105 4,794 -1,660 -25.72 462 -22.22 0.0209
2017-04-25 2017-03-31 13F MONOLITHIC PWR SYS COM 609839105 6,454 15 0.23 594 12.50 0.0265
2017-02-13 2016-12-31 13F MONOLITHIC PWR SYS COM 609839105 6,439 684 11.89 528 14.04 0.0243
2016-11-10 2016-09-30 13F MONOLITHIC PWR SYS COM 609839105 5,755 855 17.45 463 38.21 0.0220
2016-08-12 2016-06-30 13F MONOLITHIC PWR SYS COM 609839105 4,900 -270 -5.22 335 1.82 0.0163
2016-05-06 2016-03-31 13F MONOLITHIC PWR SYS COM 609839105 5,170 -1,765 -25.45 329 -25.57 0.0171
2016-02-05 2015-12-31 13F MONOLITHIC PWR SYS COM 609839105 6,935 1,069 18.22 442 47.33 0.0210
2015-11-06 2015-09-30 13F MONOLITHIC PWR SYS COM 609839105 5,866 -3,270 -35.79 300 -35.21 0.0171
2015-08-11 2015-06-30 13F MONOLITHIC PWR SYS COM 609839105 9,136 -2,624 -22.31 463 -25.20 0.0192
2015-05-08 2015-03-31 13F MONOLITHIC PWR SYS COM 609839105 11,760 11,760 0.00 619 0.0241
2015-01-30 2014-12-31 13F MONOLITHIC PWR SYS COM 609839105 0 -4,748 -100.00 0 -100.00
2014-11-06 2014-09-30 13F MONOLITHIC PWR SYS COM 609839105 4,748 -3,021 -38.89 209 -36.47 0.0098
2014-08-08 2014-06-30 13F MONOLITHIC PWR SYS COM 609839105 7,769 -1,196 -13.34 329 -5.46 0.0144
2014-05-07 2014-03-31 13F MONOLITHIC PWR SYS COM 609839105 8,965 -7,273 -44.79 348 -38.19 0.0158
2014-02-04 2013-12-31 13F MONOLITHIC PWR SYS COM 609839105 16,238 7,464 85.07 563 111.65 0.0252
2013-11-07 2013-09-30 13F MONOLITHIC PWR SYS COM 609839105 8,774 8,774 266 0.0141
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.