PARNASSUS INVESTMENTS, LLC

Position in MPWR — Monolithic Power Systems Inc

CIK 948669 San Francisco, CA

Position in MPWR

as of Mar 31, 2026 · filed May 12, 2026 Compact

Position Value

$19,868,356

-$4,231,756 QoQ

Shares Held

18,172

-31.7% QoQ

Ownership

0.037%

of shares outstanding

% of Portfolio

0.06%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2020

24 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Technology · as of Mar 31, 2026

PARNASSUS INVESTMENTS, LLC holds $3,256,570,746 across 8 Semiconductors names. MPWR ranks #8 (0.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	NVDA	Nvidia Corp	9,438,607	$1,646,093,060
2	AVGO	Broadcom Inc.	2,281,563	$706,166,564
3	AMD	Advanced Micro Devices Inc	2,703,880	$550,050,308
4	TSM	Taiwan Semiconductor Manufacturing Co Ltd	386,893	$130,750,489
5	MU	Micron Technology Inc	245,378	$82,898,503
6	NXPI	NXP Semiconductors N.V.	328,319	$64,632,878
7	INTC	Intel Corp	1,271,484	$56,110,588
8	MPWR	Monolithic Power Systems Inc This page	18,172	$19,868,356

24 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$19,868,356	18,172	-31.7%	Shares	Sole	2026-05-12
2025-12-31	$24,100,112	26,590	-3.0%	Shares	Sole	2026-02-12
2025-09-30	$25,235,663	27,411	-1.1%	Shares	Sole	2025-10-24
2025-06-30	$20,268,002	27,712	-2.6%	Shares	Sole	2025-08-06
2025-03-31	$16,500,431	28,450	0.0%	Shares	Sole	2025-05-15
2024-12-31	$16,833,865	28,450	+24.7%	Shares	Sole	2025-02-10
2024-09-30	$21,084,147	22,806	-25.6%	Shares	Sole	2024-11-08
2024-06-30	$25,195,173	30,663	0.0%	Shares	Sole	2024-08-06
2024-03-31	$20,771,729	30,663	0.0%	Shares	Sole	2024-05-09
2023-12-31	$19,341,607	30,663	+8.3%	Shares	Sole	2024-02-12
2023-09-30	$13,082,916	28,318	0.0%	Shares	Sole	2023-11-08
2023-06-30	$15,298,233	28,318	0.0%	Shares	Sole	2023-07-31
2023-03-31	$14,174,291	28,318	-28.2%	Shares	Sole	2023-05-01
2022-12-31	$13,949,914	39,450	+144.2%	Shares	Sole	2023-01-30
2022-09-30	$5,871,090	16,156	-67.9%	Shares	Sole	2022-11-14
2022-06-30	$19,302,618	50,262	0.0%	Shares	Sole	2022-08-05
2022-03-31	$24,411,248	50,262	0.0%	Shares	Sole	2022-05-11
2021-12-31	$24,795,752	50,262	0.0%	Shares	Sole	2022-02-11
2021-09-30	$24,360,986	50,262	0.0%	Shares	Sole	2021-11-16
2021-06-30	$18,770,343	50,262	0.0%	Shares	Sole	2021-08-05
2021-03-31	$17,753,041	50,262	0.0%	Shares	Sole	2021-05-06
2020-12-31	$18,407,452	50,262	0.0%	Shares	Sole	2021-02-10
2020-09-30	$14,053,757	50,262	-2.2%	Shares	Sole	2020-11-13
2020-06-30	$12,185,118	51,414	—	Shares	Sole	2020-08-12
No filing history on record for this holder in this stock.