Monolithic Power Systems, Inc.
US ˙ NasdaqGS ˙ US6098391054

SecurityMPWR / Monolithic Power Systems, Inc.
InstitutionGeneos Wealth Management Inc.
Latest Disclosed Ownership63 shares
Latest Disclosed Value $ 68,881
Geneos Wealth Management Inc. reports 10.53% increase in ownership of MPWR / Monolithic Power Systems, Inc.

On May 4, 2026 - Geneos Wealth Management Inc. filed a 13F-HR form disclosing ownership of 63 shares of Monolithic Power Systems, Inc. (US:MPWR) valued at $68,881 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 57 shares of Monolithic Power Systems, Inc.. This represents a change in shares of 10.53% during the quarter. The current value of the position is $93,306 USD.

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)
2026-05-04 2026-03-31 13F MONOLITHIC PWR SYS COM 609839105 63 6 10.53 69 33.33 0.0016
2026-01-28 2025-12-31 13F MONOLITHIC PWR SYS COM 609839105 57 -1 -1.72 52 -3.77 0.0013
2025-10-22 2025-09-30 13F MONOLITHIC PWR SYS COM 609839105 58 -50 -46.30 53 -32.05 0.0014
2025-08-18 2025-06-30 13F MONOLITHIC PWR SYS COM 609839105 108 0 0.00 79 25.81 0.0019
2025-05-21 2025-03-31 13F/A-1 MONOLITHIC PWR SYS COM 609839105 108 7 6.93 63 5.08 0.0021
2025-05-08 2025-03-31 13F MONOLITHIC PWR SYS COM 609839105 153 52 89 0.0022
2025-01-21 2024-12-31 13F MONOLITHIC PWR SYS COM 609839105 101 -11 -9.82 60 -42.72 0.0021
2024-11-14 2024-09-30 13F MONOLITHIC PWR SYS COM 609839105 112 55 96.49 104 123.91 0.0040
2024-07-23 2024-06-30 13F MONOLITHIC PWR SYS COM 609839105 57 0 0.00 47 21.05 0.0021
2024-05-03 2024-03-31 13F MONOLITHIC PWR SYS COM 609839105 57 0 0.00 39 8.57 0.0018
2024-01-26 2023-12-31 13F MONOLITHIC PWR SYS COM 609839105 57 0 0.00 36 34.62 0.0018
2023-10-11 2023-09-30 13F MONOLITHIC PWR SYS COM 609839105 57 2 3.64 26 -10.34 0.0014
2023-08-08 2023-06-30 13F MONOLITHIC PWR SYS COM 609839105 55 0 0.00 30 7.41 0.0016
2023-04-25 2023-03-31 13F MONOLITHIC PWR SYS COM 609839105 55 0 0.00 28 42.11 0.0017
2023-01-31 2022-12-31 13F MONOLITHIC PWR SYS COM 609839105 55 0 0.00 19 0.00 0.0012
2022-11-14 2022-09-30 13F MONOLITHIC PWR SYS COM 609839105 55 0 0.00 19 -5.00 0.0013
2022-07-22 2022-06-30 13F MONOLITHIC PWR SYS COM 609839105 55 0 0.00 20 -23.08 0.0010
2022-05-16 2022-03-31 13F MONOLITHIC PWR SYS COM 609839105 55 -3 -5.17 26 -7.14 0.0011
2022-02-09 2021-12-31 13F MONOLITHIC PWR SYS COM 609839105 58 -6 -9.38 28 -6.67 0.0011
2021-11-09 2021-09-30 13F MONOLITHIC PWR SYS COM 609839105 64 0 0.00 30 25.00 0.0011
2021-07-08 2021-06-30 13F MONOLITHIC PWR SYS COM 609839105 64 0 0.00 24 4.35 0.0009
2021-06-17 2021-03-31 13F MONOLITHIC PWR SYS COM 609839105 64 0 0.00 23 4.55 0.0006
2021-05-19 2020-12-31 13F MONOLITHIC PWR SYS COM 609839105 64 0 0.00 22 37.50 0.0009
2021-09-07 2020-09-30 13F MONOLITHIC PWR SYS COM 609839105 64 0 0.00 16 14.29 0.0008
2021-09-07 2020-06-30 13F MONOLITHIC PWR SYS COM 609839105 64 -100 -60.98 14 -46.15 0.0008
2021-09-07 2020-03-31 13F MONOLITHIC PWR SYS COM 609839105 164 0 0.00 26 -10.34 0.0017
2021-09-07 2019-12-31 13F MONOLITHIC PWR SYS COM 609839105 164 0 0.00 29 16.00 0.0015
2021-09-07 2019-09-30 13F MONOLITHIC PWR SYS COM 609839105 164 0 0.00 25 13.64 0.0015
2021-09-07 2019-06-30 13F MONOLITHIC PWR SYS COM 609839105 164 0 0.00 22 0.00 0.0014
2021-09-07 2019-03-31 13F MONOLITHIC PWR SYS COM 609839105 164 109 198.18 22 266.67 0.0015
2021-09-07 2018-12-31 13F MONOLITHIC PWR SYS COM 609839105 55 0 0.00 6 0.00 0.0004
2021-09-07 2018-09-30 13F MONOLITHIC PWR SYS COM 609839105 55 5 10.00 6 0.00 0.0004
2021-09-07 2018-06-30 13F MONOLITHIC PWR SYS COM 609839105 50 0 0.00 6 20.00 0.0005
2021-09-07 2018-03-31 13F MONOLITHIC PWR SYS COM 609839105 50 0 0.00 5 0.00 0.0004
2021-09-07 2017-12-31 13F MONOLITHIC PWR SYS COM 609839105 50 0 0.00 5 0.00 0.0004
2021-09-07 2017-09-30 13F MONOLITHIC PWR SYS COM 609839105 50 50 5 0.0005
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.