Monolithic Power Systems, Inc.
MX ˙ BMV ˙ US6098391054
SecurityMX:MPWR / Monolithic Power Systems, Inc.
InstitutionIFP Advisors, Inc
Latest Disclosed Ownership104 shares
Latest Disclosed Value $ 113,708
IFP Advisors, Inc reports 5.05% increase in ownership of MPWR / Monolithic Power Systems, Inc.

On April 13, 2026 - IFP Advisors, Inc filed a 13F-HR form disclosing ownership of 104 shares of Monolithic Power Systems, Inc. (MX:MPWR) valued at $113,708 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 99 shares of Monolithic Power Systems, Inc.. This represents a change in shares of 5.05% 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)
2026-04-13 2026-03-31 13F MONOLITHIC PWR SYS cs 609839105 104 5 5.05 114 26.97 0.0024
2026-02-06 2025-12-31 13F MONOLITHIC PWR SYS cs 609839105 99 29 41.43 90 39.06 0.0020
2026-02-06 2025-09-30 13F/A-1 MONOLITHIC PWR SYS cs 609839105 70 56 400.00 64 45.45 0.0017
2025-12-02 2025-09-30 13F MONOLITHIC PWR SYS cs 609839105 38 24 95 0.0024
2025-07-24 2025-06-30 13F MONOLITHIC PWR SYS cs 609839105 14 -17 -54.84 44 144.44 0.0013
2025-05-05 2025-03-31 13F MONOLITHIC PWR SYS cs 609839105 31 -1,456 -97.92 18 -97.97 0.0006
2025-02-04 2024-12-31 13F MONOLITHIC PWR SYS cs 609839105 1,487 -15 -1.00 886 -36.29 0.0290
2025-02-04 2024-09-30 13F MONOLITHIC PWR SYS cs 609839105 1,502 1,088 262.80 1,390 309.73 0.0501
2024-07-30 2024-06-30 13F MONOLITHIC PWR SYS cs 609839105 414 37 9.81 340 32.94 0.0135
2024-07-30 2024-03-31 13F MONOLITHIC PWR SYS cs 609839105 377 325 625.00 255 696.88 0.0112
2024-01-09 2023-12-31 13F MONOLITHIC PWR SYS cs 609839105 52 23 79.31 33 146.15 0.0015
2023-10-12 2023-09-30 13F MONOLITHIC PWR SYS cs 609839105 29 -1,757 -98.38 13 -98.65 0.0006
2023-08-14 2023-06-30 13F/A-1 MONOLITHIC PWR SYS cs 609839105 1,786 1,783 59,433.33 965 0.0403
2023-08-04 2023-06-30 13F MONOLITHIC PWR SYS cs 609839105 1,786 1,783 238 0.0110
2023-04-18 2023-03-31 13F MONOLITHIC PWR SYS cs 609839105 3 -52 -94.55 0 0.0000
2023-02-07 2022-12-31 13F MONOLITHIC PWR SYS cs 609839105 55 -129 -70.11 0 -100.00 0.0003
2022-11-08 2022-09-30 13F MONOLITHIC PWR SYS cs 609839105 184 -30 -14.02 46 15.00 0.0012
2022-09-06 2022-06-30 13F/A-1 MONOLITHIC PWR SYS cs 609839105 214 0 0.00 40 0.00 0.0013
2022-09-06 2022-03-31 13F/A-1 MONOLITHIC PWR SYS cs 609839105 214 191 830.43 40 263.64 0.0013
2022-08-08 2022-03-31 13F MONOLITHIC PWR SYS INC COM Stock 609839105 32 9 8 0.0002
2022-01-12 2021-12-31 13F MONOLITHIC PWR SYS INC COM Stock 609839105 23 -1 -4.17 11 -8.33 0.0002
2021-10-06 2021-09-30 13F MONOLITHIC PWR SYS INC COM Stock 609839105 24 -29 -54.72 12 -36.84 0.0002
2021-07-13 2021-06-30 13F MONOLITHIC PWR SYS INC COM Stock 609839105 53 -73 -57.94 19 -57.78 0.0004
2021-04-30 2021-03-31 13F MONOLITHIC PWR SYS INC COM Stock 609839105 126 -3 -2.33 45 -4.26 0.0009
2021-01-25 2020-12-31 13F MONOLITHIC PWR SYS INC COM Stock 609839105 129 51 65.38 47 123.81 0.0019
2020-10-29 2020-09-30 13F MONOLITHIC PWR SYS INC COM Stock 609839105 78 46 143.75 21 162.50 0.0013
2020-08-05 2020-06-30 13F MONOLITHIC PWR SYS INC COM Stock 609839105 32 20 166.67 8 300.00 0.0006
2020-05-12 2020-03-31 13F MONOLITHIC PWR SYS INC COM Stock 609839105 12 -17 -58.62 2 -60.00 0.0002
2020-01-17 2019-12-31 13F MONOLITHIC PWR SYS INC COM Stock 609839105 29 17 141.67 5 150.00 0.0004
2019-11-07 2019-09-30 13F MONOLITHIC PWR SYS INC COM Stock 609839105 12 12 2 0.0001
2019-05-15 2019-03-31 13F MONOLITHIC POWER Stock 609839105 0 -250 -100.00 0 -100.00
2019-06-03 2018-12-31 13F/A-10 MONOLITHIC POWER Stock 609839105 250 -623 -71.36 29 -73.64 0.0018
2019-01-23 2018-12-31 13F MONOLITHIC POWER Stock 609839105 250 -623 29 0.0018
2019-06-03 2018-09-30 13F/A-9 MONOLITHIC POWER Stock 609839105 873 -73 -7.72 110 -12.70 0.0045
2018-10-25 2018-09-30 13F MONOLITHIC POWER Stock 609839105 873 -73 110 0.0045
2019-06-03 2018-06-30 13F/A-8 MONOLITHIC POWER Stock 609839105 946 -42 -4.25 126 13.51 0.0053
2018-08-07 2018-06-30 13F MONOLITHIC POWER Stock 609839105 946 -24 126
2019-06-03 2018-03-31 13F/A-7 MONOLITHIC PWR SYS INC COM Stock 609839105 988 0 0.00 111 0.00 0.0050
2018-05-09 2018-03-31 13F MONOLITHIC POWER Stock 609839105 970 -18 112
2019-06-03 2017-12-31 13F/A-6 MONOLITHIC PWR SYS INC COM Stock 609839105 988 -29 -2.85 111 2.78 0.0050
2018-01-24 2017-12-31 13F MONOLITHIC PWR SYS INC COM Stock 609839105 988 -29 111
2017-10-30 2017-09-30 13F MONOLITHIC PWR SYS INC COM Stock 609839105 1,017 110 12.13 108 24.14 0.0043
2019-06-03 2017-06-30 13F/A-5 MONOLITHIC PWR SYS INC COM Stock 609839105 907 -207 -18.58 87 -15.53 0.0037
2017-07-31 2017-06-30 13F MONOLITHIC PWR SYS INC COM Stock 609839105 907 -207 87
2019-06-03 2017-03-31 13F/A-4 MONOLITHIC PWR SYS INC COM Stock 609839105 1,114 -37 -3.21 103 9.57 0.0045
2017-04-26 2017-03-31 13F MONOLITHIC PWR SYS INC COM Stock 609839105 1,114 -37 103
2019-06-03 2016-12-31 13F/A-3 MONOLITHIC PWR SYS INC COM Stock 609839105 1,151 151 15.10 94 17.50 0.0045
2017-02-14 2016-12-31 13F MONOLITHIC PWR SYS INC COM Stock 609839105 1,151 151 94
2016-11-04 2016-09-30 13F MONOLITHIC PWR SYS INC COM Stock 609839105 1,000 941 1,594.92 80 1,900.00 0.0042
2019-06-03 2016-06-30 13F/A-2 MONOLITHIC PWR SYS INC COM Stock 609839105 59 54 1,080.00 4 0.0002
2016-08-22 2016-06-30 13F MONOLITHIC PWR SYS INC COM Stock 609839105 59 54 4
2016-05-02 2016-03-31 13F MONOLITHIC PWR SYS INC COM Stock 609839105 5 0 0.00 0 0.0000
2016-02-11 2015-12-31 13F MONOLITHIC PWR SYS INC COM Stock 609839105 5 5 0 0.0000
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.