WHITTIER TRUST CO

Bank

Position in MPWR — Monolithic Power Systems Inc

CIK 1137881 SOUTH PASADENA, CA

Position in MPWR

as of Mar 31, 2026 · filed Apr 28, 2026 Compact

Position Value

$45,931,633

+$5,823,391 QoQ

Shares Held

42,010

-5.1% QoQ

Ownership

0.086%

of shares outstanding

% of Portfolio

0.67%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

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

Technology · as of Mar 31, 2026

WHITTIER TRUST CO holds $840,182,128 across 22 Semiconductors names. MPWR ranks #3 (5.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	NVDA	Nvidia Corp	2,762,949	$481,858,305
2	AVGO	Broadcom Inc.	839,540	$259,846,025
3	MPWR	Monolithic Power Systems Inc This page	42,010	$45,931,633
4	MU	Micron Technology Inc	79,682	$26,919,766
5	ARM	Arm Holdings PLC /Uk	58,793	$8,894,205
6	TXN	Texas Instruments Inc	31,129	$6,043,384
7	AMD	Advanced Micro Devices Inc	20,061	$4,081,009
8	QCOM	Qualcomm Inc/De	26,610	$3,426,834

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$45,931,633	42,010	-5.1%	Shares	Sole	2026-04-28
2025-12-31	$40,108,242	44,252	+0.1%	Shares	Sole	2026-01-26
2025-09-30	$40,693,208	44,201	+1.6%	Shares	Sole	2025-10-31
2025-06-30	$31,831,850	43,523	+2.4%	Shares	Sole	2025-07-30
2025-03-31	$24,641,029	42,486	+2.3%	Shares	Sole	2025-05-02
2024-12-31	$24,574,483	41,532	+3.1%	Shares	Sole	2025-02-11
2024-09-30	$37,248,105	40,290	+3.6%	Shares	Sole	2024-10-21
2024-06-30	$31,950,204	38,884	+4.8%	Shares	Sole	2024-07-29
2024-03-31	$25,126,184	37,091	+3.5%	Shares	Sole	2024-05-02
2023-12-31	$22,594,539	35,820	-7.6%	Shares	Sole	2024-01-11
2023-09-30	$17,919,594	38,787	+2.2%	Shares	Sole	2023-10-27
2023-06-30	$20,496,865	37,941	-10.9%	Shares	Sole	2023-07-24
2023-03-31	$21,322,503	42,599	+9.0%	Shares	Sole	2023-04-21
2022-12-31	$13,823,321	39,092	-19.7%	Shares	Sole	2023-01-25
2022-09-30	$17,697,942	48,701	+4.3%	Shares	Sole	2022-10-21
2022-06-30	$17,938,507	46,710	+1.1%	Shares	Sole	2022-07-28
2022-03-31	$22,440,357	46,204	+4.2%	Shares	Sole	2022-04-29
2021-12-31	$21,865,865	44,323	-10.3%	Shares	Sole	2022-01-19
2021-09-30	$23,946,584	49,407	-1.1%	Shares	Sole	2021-11-01
2021-06-30	$18,647,105	49,932	+6.0%	Shares	Sole	2021-07-29
2021-03-31	$16,645,373	47,126	+7.4%	Shares	Sole	2021-04-26
2020-12-31	$16,071,270	43,883	-23.5%	Shares	Sole	2021-01-29
2020-09-30	$16,044,860	57,383	+0.9%	Shares	Sole	2020-10-30
2020-06-30	$13,476,768	56,864	-1.5%	Shares	Sole	2020-07-10
2020-03-31	$9,670,647	57,749	—	Shares	Sole	2020-04-27
No filing history on record for this holder in this stock.