Monolithic Power Systems, Inc.
MX ˙ BMV ˙ US6098391054
SecurityMX:MPWR / Monolithic Power Systems, Inc.
InstitutionCovenant Asset Management, LLC
Latest Disclosed Ownership447 shares
Latest Disclosed Value $ 488,728
Covenant Asset Management, LLC ownership in MPWR / Monolithic Power Systems, Inc.

On April 14, 2026 - Covenant Asset Management, LLC filed a 13F-HR form disclosing ownership of 447 shares of Monolithic Power Systems, Inc. (MX:MPWR) valued at $488,728 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 447 shares of Monolithic Power Systems, Inc.. This represents a change in shares of 0.00% during the quarter.

Covenant Asset Management, LLC has a history of taking positions in derivatives of the underlying security (MPWR) in the form of stock options.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:MPWR / Monolithic Power Systems, Inc. Historical Put/Call Ratio
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)
2026-04-14 2026-03-31 13F MONOLITHIC PWR SYS COM 609839105 447 0 0.00 489 20.49 0.0736
2026-01-30 2025-12-31 13F MONOLITHIC PWR SYS COM 609839105 447 -18 -3.87 405 -5.37 0.0480
2025-10-30 2025-09-30 13F MONOLITHIC PWR SYS COM 609839105 465 3 0.65 428 27.00 0.0484
2025-07-17 2025-06-30 13F MONOLITHIC PWR SYS COM 609839105 462 -3 -0.65 338 25.28 0.0499
2025-05-05 2025-03-31 13F MONOLITHIC PWR SYS COM 609839105 465 -28 -5.68 270 -7.56 0.0594
2025-01-30 2024-12-31 13F MONOLITHIC PWR SYS COM 609839105 493 -249 -33.56 292 -57.52 0.0448
2024-11-12 2024-09-30 13F MONOLITHIC PWR SYS COM 609839105 742 478 181.06 686 217.13 0.1079
2024-08-02 2024-06-30 13F MONOLITHIC PWR SYS COM 609839105 264 264 217 0.0345
2024-04-23 2024-03-31 13F MONOLITHIC PWR SYS COM 609839105 0 -350 -100.00 0 -100.00
2024-01-22 2023-12-31 13F MONOLITHIC PWR SYS COM 609839105 350 350 221 0.0397
2023-01-24 2022-12-31 13F MONOLITHIC PWR SYS COM 609839105 0 -9,976 -100.00 0 -100.00
2022-11-03 2022-09-30 13F MONOLITHIC PWR SYS COM 609839105 9,976 -1,985 -16.60 3,625 -21.09 1.0335
2022-07-21 2022-06-30 13F MONOLITHIC PWR SYS COM 609839105 11,961 -369 -2.99 4,594 -23.28 1.4592
2022-04-29 2022-03-31 13F MONOLITHIC PWR SYS COM 609839105 12,330 83 0.68 5,988 -0.89 1.6177
2022-01-26 2021-12-31 13F MONOLITHIC PWR SYS COM 609839105 12,247 181 1.50 6,042 3.32 1.6055
2021-10-27 2021-09-30 13F/A-1 MONOLITHIC PWR SYS COM 609839105 12,066 -106 -0.87 5,848 28.64 1.7363
2021-10-15 2021-09-30 13F MONOLITHIC PWR SYS COM 609839105 12,066 -106 5,848 1.7430
2021-07-21 2021-06-30 13F MONOLITHIC PWR SYS COM 609839105 12,172 101 0.84 4,546 6.61 1.3528
2021-04-19 2021-03-31 13F MONOLITHIC PWR SYS COM 609839105 12,071 279 2.37 4,264 -1.27 1.3293
2021-01-28 2020-12-31 13F MONOLITHIC PWR SYS COM 609839105 11,792 500 4.43 4,319 36.81 1.4230
2020-10-29 2020-09-30 13F MONOLITHIC PWR SYS COM 609839105 11,292 11,292 3,157 1.0117
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-04-14 2026-03-31 13F MONOLITHIC PWR SYS PUT Put 25,694 62.92 n/a n/a n/a
2026-01-30 2025-12-31 13F MONOLITHIC PWR SYS PUT Put 15,771 128.42 n/a n/a n/a
2025-10-30 2025-09-30 13F MONOLITHIC PWR SYS PUT Put 6,905 n/a n/a n/a
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.