Robeco Schweiz AG

Position in MPWR — Monolithic Power Systems, Inc.

CIK 1418427 ZURICH, V8

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Position in MPWR

as of Jun 30, 2026 · filed Jul 28, 2026 Compact

Position Value

$132,752,177

+$28,891,581 QoQ

Shares Held

96,033

+1.1% QoQ

Ownership

0.195%

of shares outstanding

% of Portfolio

2.13%

of 13F equity value

Holder Rank

of 374 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in MPWR Over Time

Shares Held

Position Value (USD)

Position in Semiconductors

Technology · as of Jun 30, 2026

Robeco Schweiz AG holds $1,513,187,431 across 14 Semiconductors names. MPWR ranks #6 (8.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ARM	Arm Holdings PLC /Uk	827,366	$293,359,162
2	MRVL	Marvell Technology, Inc.	960,706	$286,184,710
3	ADI	Analog Devices Inc	527,512	$209,511,941
4	ON	On Semiconductor Corp	1,722,056	$162,803,174
5	LSCC	Lattice Semiconductor Corp	909,862	$139,172,491
6	MPWR	Monolithic Power Systems, Inc. This page	96,033	$132,752,177
7	POWI	Power Integrations Inc	1,340,404	$112,272,239
8	STM	STMicroelectronics N.V.	538,880	$40,356,723

All Filings in MPWR

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26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$132,752,177	96,033	+1.1%	Shares	Sole	2026-07-28
2026-03-31	$103,860,596	94,993	-0.0%	Shares	Sole	2026-05-07
2025-12-31	$86,120,514	95,018	-8.0%	Shares	Sole	2026-02-03
2025-09-30	$95,044,111	103,237	-3.3%	Shares	Defined	2025-10-27
2025-06-30	$78,069,695	106,743	-8.0%	Shares	Defined	2025-08-07
2025-03-31	$67,304,359	116,046	+5.3%	Shares	Defined	2025-04-30
2024-12-31	$65,221,315	110,227	-21.2%	Shares	Defined	2025-02-05
2024-09-30	$129,260,816	139,817	-1.7%	Shares	Defined	2024-11-04
2024-06-30	$116,881,514	142,247	-37.0%	Shares	Defined	2024-08-08
2024-03-31	$153,040,694	225,917	-9.8%	Shares	Defined	2024-04-25
2023-12-31	$157,929,650	250,372	+2.5%	Shares	Defined	2024-02-14
2023-09-30	$112,825,020	244,210	-1.8%	Shares	Defined	2023-11-08
2023-06-30	$134,414,626	248,810	+4.3%	Shares	Defined	2023-08-14
2023-03-31	$119,453,871	238,650	-1.1%	Shares	Defined	2023-05-08
2022-12-31	$85,354,381	241,380	-0.0%	Shares	Defined	2023-02-07
2022-09-30	$87,753,832	241,480	+2.6%	Shares	Sole	2022-11-10
2022-06-30	$90,412,617	235,425	0.0%	Shares	Sole	2022-08-03
2022-03-31	$114,341,214	235,425	+54.2%	Shares	Sole	2022-05-13
2021-12-31	$75,331,491	152,700	-5.1%	Shares	Sole	2022-02-08
2021-09-30	$77,987,920	160,906	-39.5%	Shares	Sole	2021-10-13
2021-06-30	$99,329,110	265,977	-8.8%	Shares	Sole	2021-07-15
2021-03-31	$102,974,490	291,539	+45.0%	Shares	Sole	2021-05-04
2020-12-31	$73,612,230	201,000	-0.2%	Shares	Sole	2021-02-16
2020-09-30	$56,341,415	201,500	-35.2%	Shares	Sole	2020-10-13
2020-06-30	$73,707,000	311,000	+5.4%	Shares	Sole	2020-07-07
2020-03-31	$49,400,700	295,000	—	Shares	Sole	2020-04-10
No filing history on record for this holder in this stock.