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Brown Brothers Harriman & Co’s Monolithic Power Systems MPWR Stock Holding History

Brown Brothers Harriman & Co’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 		$1.4M Buy
1,013
+314
+45% +$471K 0.01% 430
2026
Q1 		$764K Buy
699
+338
+94% +$369K ﹤0.01% 490
2025
Q4 		$327K Buy
361
+115
+47% +$111K ﹤0.01% 634
2025
Q3 		$226K Buy
246
+86
+54% +$69.7K ﹤0.01% 657
2025
Q2 		$117K Buy
160
+133
+493% +$84.7K ﹤0.01% 753
2025
Q1 		$15.7K Buy
27
+2
+8% +$1.26K ﹤0.01% 997
2024
Q4 		$14.8K Sell
25
-20
-44% -$14.5K ﹤0.01% 1077
2024
Q3 		$41.6K Buy
45
+2
+5% +$1.73K ﹤0.01% 834
2024
Q2 		$35.3K Hold
43
– – ﹤0.01% 817
2024
Q1 		$29.1K Buy
43
+2
+5% +$1.33K ﹤0.01% 840
2023
Q4 		$25.9K Hold
41
– – ﹤0.01% 818
2023
Q3 		$18.9K Hold
41
– – ﹤0.01% 853
2023
Q2 		$22.1K Sell
41
-1
-2% -$475 ﹤0.01% 840
2023
Q1 		$21K Sell
42
-33
-44% -$15.2K ﹤0.01% 877
2022
Q4 		$26.5K Sell
75
-73
-49% -$26.2K ﹤0.01% 825
2022
Q3 		$54K Buy
148
+45
+44% +$20K ﹤0.01% 723
2022
Q2 		$40K Sell
103
-14
-12% -$5.91K ﹤0.01% 746
2022
Q1 		$57K Buy
+117
New +$51K ﹤0.01% 743
2020
Q2 		– Sell
-40
Closed -$7K – 1112
2020
Q1 		$7K Buy
+40
New +$6.85K ﹤0.01% 744
2019
Q4 		– Sell
-4
Closed -$1K – 1215
2019
Q3 		$1K Hold
4
– – ﹤0.01% 1136
2019
Q2 		$1K Buy
+4
New +$544 ﹤0.01% 1035
2018
Q4 		– Sell
-15
Closed -$2K – 970
2018
Q3 		$2K Buy
+15
New +$2.09K ﹤0.01% 787

Other funds holding MPWR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Brown Brothers Harriman & Co's MPWR Position: Q2 2026 in Review

Brown Brothers Harriman & Co increased its Monolithic Power Systems (MPWR) stake by 45% in Q2 2026, buying an estimated $471K and bringing the position to 1,013 shares worth $1.4M. The position accounts for 0.01% of the portfolio, ranked #430.

Brown Brothers Harriman & Co first reported a position in MPWR in Q3 2018 and has held it in 22 quarters since. 1,245 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Brown Brothers Harriman & Co held 1,013 shares of Monolithic Power Systems worth $1.4M as of Q2 2026.
  • Brown Brothers Harriman & Co bought 314 Monolithic Power Systems shares in Q2 2026, an estimated $471K.
  • Monolithic Power Systems made up 0.01% of Brown Brothers Harriman & Co's portfolio in Q2 2026, its #430 holding.
  • Brown Brothers Harriman & Co first reported a position in Monolithic Power Systems in Q3 2018 and has held it in 22 quarters since.
  • 1,245 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Brown Brothers Harriman & Co's 13F filing for Q2 2026, filed 12 Aug 2026.