Man Group plc reports 75.84% decrease in ownership of MPWR / Monolithic Power Systems, Inc.

Monolithic Power Systems, Inc.

US ˙ NasdaqGS ˙ US6098391054

Security	MPWR / Monolithic Power Systems, Inc.
Institution	Man Group plc
Latest Disclosed Ownership	6,508 shares
Latest Disclosed Value	$ 7,115,521

On May 15, 2026 - Man Group plc filed a 13F-HR form disclosing ownership of 6,508 shares of Monolithic Power Systems, Inc. (US:MPWR) valued at $7,115,522 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 26,936 shares of Monolithic Power Systems, Inc.. This represents a change in shares of -75.84% during the quarter. The current value of the position is $10,997,804 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-15	2026-03-31	13F	MONOLITHIC PWR SYS	COM	609839105	6,508	-20,428	-75.84	7,116	-70.86	0.0129
2026-02-17	2025-12-31	13F	MONOLITHIC PWR SYS	COM	609839105	26,936	17,197	176.58	24,414	172.28	0.0415
2025-11-14	2025-09-30	13F	MONOLITHIC PWR SYS	COM	609839105	9,739	-17,022	-63.61	8,966	-54.19	0.0156
2025-08-14	2025-06-30	13F	MONOLITHIC PWR SYS	COM	609839105	26,761	-2,794	-9.45	19,572	14.18	0.0373
2025-05-15	2025-03-31	13F	MONOLITHIC PWR SYS	COM	609839105	29,555	-31,147	-51.31	17,141	-52.28	0.0435
2025-02-14	2024-12-31	13F	MONOLITHIC PWR SYS	COM	609839105	60,702	58,321	2,449.43	35,917	1,531.85	0.0945
2024-11-14	2024-09-30	13F	MONOLITHIC PWR SYS	COM	609839105	2,381	-26,403	-91.73	2,201	-90.69	0.0057
2024-08-14	2024-06-30	13F	MONOLITHIC PWR SYS	COM	609839105	28,784	-11,113	-27.85	23,651	-12.49	0.0597
2024-05-15	2024-03-31	13F	MONOLITHIC PWR SYS	COM	609839105	39,897	37,278	1,423.37	27,027	1,536.02	0.0681
2024-02-14	2023-12-31	13F	MONOLITHIC PWR SYS	COM	609839105	2,619			1,652	-5.28	0.0046
2023-11-14	2023-09-30	13F	MONOLITHIC PWR SYS	COM	609839105				1,744	-91.49	0.0054
2023-08-14	2023-06-30	13F	MONOLITHIC PWR SYS	COM	609839105	37,929			20,490	135.46	0.0632
2023-05-15	2023-03-31	13F	MONOLITHIC PWR SYS	COM	609839105				8,702	80.05	0.0310
2023-02-14	2022-12-31	13F	MONOLITHIC PWR SYS	COM	609839105	13,669	-22,841	-62.56	4,833	-63.57	0.0173
2022-11-14	2022-09-30	13F	MONOLITHIC PWR SYS	COM	609839105	36,510			13,268	255.23	0.0616
2022-08-15	2022-06-30	13F	MONOLITHIC PWR SYS	COM	609839105				3,735	-40.79	0.0158
2022-05-16	2022-03-31	13F	MONOLITHIC PWR SYS	COM	609839105	12,989	-21,919	-62.79	6,308	-63.37	0.0219
2022-02-14	2021-12-31	13F	MONOLITHIC PWR SYS	COM	609839105	34,908	10,262	41.64	17,221	44.17	0.0554
2021-11-15	2021-09-30	13F	MONOLITHIC PWR SYS	COM	609839105	24,646	14,714	148.15	11,945	222.14	0.0419
2021-08-16	2021-06-30	13F	MONOLITHIC PWR SYS	COM	609839105	9,932	-807	-7.51	3,708	-2.24	0.0131
2021-05-17	2021-03-31	13F	MONOLITHIC PWR SYS	COM	609839105	10,739	-21,114	-66.29	3,793	-67.48	0.0167
2021-02-16	2020-12-31	13F	MONOLITHIC PWR SYS	COM	609839105	31,853	-53,375	-62.63	11,665	-51.05	0.0512
2020-11-16	2020-09-30	13F	MONOLITHIC PWR SYS	COM	609839105	85,228	24,370	40.04	23,831	65.23	0.0938
2020-08-14	2020-06-30	13F	MONOLITHIC PWR SYS	COM	609839105	60,858	-19,173	-23.96	14,423	7.62	0.0727
2020-05-15	2020-03-31	13F	MONOLITHIC PWR SYS	COM	609839105	80,031	-47,856	-37.42	13,402	-41.13	0.0868
2020-02-18	2019-12-31	13F	MONOLITHIC PWR SYS	COM	609839105	127,887	25,919	25.42	22,767	43.47	0.0749
2019-11-14	2019-09-30	13F	MONOLITHIC PWR SYS	COM	609839105	101,968	10,603	11.61	15,869	27.91	0.0589
2019-08-14	2019-06-30	13F	MONOLITHIC PWR SYS	COM	609839105	91,365	-10,138	-9.99	12,406	-9.79	0.0448
2019-05-15	2019-03-31	13F	MONOLITHIC PWR SYS	COM	609839105	101,503	23,439	30.03	13,752	51.54	0.0522
2019-02-14	2018-12-31	13F	MONOLITHIC PWR SYS	COM	609839105	78,064	2,560	3.39	9,075	-4.25	0.0404
2018-11-14	2018-09-30	13F	MONOLITHIC PWR SYS	COM	609839105	75,504	11,511	17.99	9,478	10.80	0.0346
2018-08-14	2018-06-30	13F	MONOLITHIC PWR SYS	COM	609839105	63,993	-14,357	-18.32	8,554	-5.69	0.0352
2018-05-15	2018-03-31	13F	MONOLITHIC PWR SYS	COM	609839105	78,350	78,350		9,070		0.0415

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.