Congress Asset Management’s Monolithic Power Systems MPWR Stock Holding History

Congress Asset Management’s Portfolio MPWR Stock Details MPWR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$111M	Sell	80,425 -2,918	-4%	-$4.38M	0.68%	54
2026 Q1	$91.1M	Sell	83,343 -7,343	-8%	-$8.02M	0.65%	52
2025 Q4	$82.2M	Sell	90,686 -17,585	-16%	-$16.9M	0.58%	56
2025 Q3	$99.7M	Sell	108,271 -16,898	-14%	-$13.7M	0.66%	54
2025 Q2	$91.5M	Buy	125,169 +2,509	+2%	+$1.6M	0.63%	57
2025 Q1	$71.1M	Sell	122,660 -8,042	-6%	-$5.07M	0.53%	76
2024 Q4	$77.3M	Sell	130,702 -13,536	-9%	-$9.8M	0.52%	77
2024 Q3	$133M	Sell	144,238 -99,092	-41%	-$85.6M	0.91%	38
2024 Q2	$200M	Sell	243,330 -7,824	-3%	-$5.65M	1.43%	5
2024 Q1	$170M	Sell	251,154 -4,706	-2%	-$3.14M	1.21%	10
2023 Q4	$161M	Sell	255,860 -3,735	-1%	-$1.95M	1.27%	7
2023 Q3	$120M	Sell	259,595 -10,321	-4%	-$5.28M	1.06%	24
2023 Q2	$146M	Sell	269,916 -6,704	-2%	-$3.18M	1.27%	10
2023 Q1	$138M	Sell	276,620 -36,253	-12%	-$16.7M	1.29%	11
2022 Q4	$111M	Sell	312,873 -4,495	-1%	-$1.61M	1.11%	22
2022 Q3	$115M	Sell	317,368 -67,176	-17%	-$29.9M	1.24%	18
2022 Q2	$148M	Buy	384,544 +40,319	+12%	+$17M	1.41%	8
2022 Q1	$167M	Sell	344,225 -4,872	-1%	-$2.12M	1.42%	11
2021 Q4	$172M	Sell	349,097 -25,789	-7%	-$13.3M	1.31%	18
2021 Q3	$182M	Sell	374,886 -12,285	-3%	-$5.59M	1.42%	11
2021 Q2	$145M	Sell	387,171 -26,418	-6%	-$9.3M	1.21%	25
2021 Q1	$146M	Sell	413,589 -38,450	-9%	-$14M	1.32%	15
2020 Q4	$166M	Sell	452,039 -40,207	-8%	-$12.9M	1.56%	8
2020 Q3	$138M	Sell	492,246 -15,920	-3%	-$4.14M	1.49%	12
2020 Q2	$120M	Sell	508,166 -102,434	-17%	-$20.7M	1.43%	14
2020 Q1	$102M	Sell	610,600 -23,975	-4%	-$4.11M	1.56%	8
2019 Q4	$113M	Sell	634,575 -16,486	-3%	-$2.63M	1.38%	13
2019 Q3	$101M	Sell	651,061 -45,517	-7%	-$6.81M	1.3%	16
2019 Q2	$94.6M	Sell	696,578 -24,689	-3%	-$3.36M	1.2%	28
2019 Q1	$97.7M	Sell	721,267 -13,188	-2%	-$1.73M	1.28%	22
2018 Q4	$85.4M	Sell	734,455 -9,063	-1%	-$1.08M	1.28%	19
2018 Q3	$93.3M	Sell	743,518 -40,207	-5%	-$5.6M	1.21%	24
2018 Q2	$105M	Sell	783,725 -26,933	-3%	-$3.43M	1.44%	7
2018 Q1	$93.8M	Buy	810,658 +9,432	+1%	+$1.12M	1.32%	12
2017 Q4	$90M	Buy	801,226 +9,068	+1%	+$1.05M	1.31%	17
2017 Q3	$84.4M	Buy	792,158 +20,839	+3%	+$2.12M	1.3%	10
2017 Q2	$74.4M	Buy	771,319 +52,269	+7%	+$4.98M	1.33%	20
2017 Q1	$66.2M	Buy	719,050 +73,974	+11%	+$6.55M	1.27%	19
2016 Q4	$52.9M	Buy	645,076 +96,449	+18%	+$7.74M	1.11%	37
2016 Q3	$44.2M	Buy	+548,627	New	+$40.5M	0.97%	56

Other funds holding MPWR

VNIM

Vaughan Nelson Investment Management Houston, Texas $11.3B AUM 53% 1-Year Est. Return

Mirae Asset Global Investments Seoul, South Korea $67.7B AUM 51.91% 1-Year Est. Return

ZCI

Zevenbergen Capital Investments Edmonds, Washington $4.38B AUM 56.68% 1-Year Est. Return

Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return

New York State Teachers Retirement System (NYSTRS) Albany, New York $54.2B AUM 43.77% 1-Year Est. Return

FMI

Factory Mutual Insurance Waltham, Massachusetts $10.6B AUM 34.1% 1-Year Est. Return

Vest Financial Mclean, Virginia $9.52B AUM 31.6% 1-Year Est. Return

Handelsbanken Fonder Stockholm, Sweden $35.1B AUM 47.76% 1-Year Est. Return

CPC

Cookson Peirce & Co Pittsburgh, Pennsylvania $3.04B AUM 94.11% 1-Year Est. Return

Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return

Congress Asset Management's MPWR Position: Q2 2026 in Review

Congress Asset Management reduced its Monolithic Power Systems (MPWR) stake by 3.5% in Q2 2026, selling an estimated $4.38M and leaving 80,425 shares worth $111M. The position accounts for 0.68% of the portfolio, ranked #54.

Congress Asset Management first reported a position in MPWR in Q3 2016 and has held it in 40 quarters since. The position peaked at $200M in Q2 2024. 299 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

Congress Asset Management held 80,425 shares of Monolithic Power Systems worth $111M as of Q2 2026.
Congress Asset Management sold 2,918 Monolithic Power Systems shares in Q2 2026, an estimated $4.38M.
Monolithic Power Systems made up 0.68% of Congress Asset Management's portfolio in Q2 2026, its #54 holding.
Congress Asset Management first reported a position in Monolithic Power Systems in Q3 2016 and has held it in 40 quarters since.
Congress Asset Management's Monolithic Power Systems position peaked at $200M in Q2 2024.
299 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Congress Asset Management's 13F filing for Q2 2026, filed 7 Jul 2026.