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Horizon Investments’s Monolithic Power Systems MPWR Stock Holding History

Horizon Investments’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
Q1 		$1.66M Sell
1,516
-50
-3% -$54.6K 0.02% 532
2025
Q4 		$1.42M Sell
1,566
-140
-8% -$135K 0.02% 548
2025
Q3 		$1.57M Buy
1,706
+171
+11% +$139K 0.02% 530
2025
Q2 		$1.12M Buy
1,535
+847
+123% +$540K 0.02% 539
2025
Q1 		$399K Buy
688
+22
+3% +$13.9K 0.01% 411
2024
Q4 		$394K Sell
666
-892
-57% -$646K 0.01% 410
2024
Q3 		$1.44M Sell
1,558
-83
-5% -$71.7K 0.04% 219
2024
Q2 		$1.35M Buy
1,641
+810
+97% +$585K 0.04% 221
2024
Q1 		$563K Buy
831
+121
+17% +$80.8K 0.01% 345
2023
Q4 		$448K Buy
710
+34
+5% +$17.8K 0.01% 362
2023
Q3 		$312K Buy
676
+46
+7% +$23.5K 0.01% 399
2023
Q2 		$340K Sell
630
-105
-14% -$49.9K 0.01% 394
2023
Q1 		$368K Buy
+735
New +$338K 0.01% 350
2022
Q3 		– Sell
-1,106
Closed -$425K – 512
2022
Q2 		$425K Buy
+1,106
New +$467K 0.01% 315

Other funds holding MPWR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 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 $1.61T AUM 30.72% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

Horizon Investments's MPWR Position: Q1 2026 in Review

Horizon Investments reduced its Monolithic Power Systems (MPWR) stake by 3.2% in Q1 2026, selling an estimated $54.6K and leaving 1,516 shares worth $1.66M. The position accounts for 0.02% of the portfolio, ranked #532.

Horizon Investments first reported a position in MPWR in Q2 2022 and has held it in 14 quarters since. 1,118 funds tracked by Wall St. Rank hold MPWR as of Q1 2026.

  • Horizon Investments held 1,516 shares of Monolithic Power Systems worth $1.66M as of Q1 2026.
  • Horizon Investments sold 50 Monolithic Power Systems shares in Q1 2026, an estimated $54.6K.
  • Monolithic Power Systems made up 0.02% of Horizon Investments's portfolio in Q1 2026, its #532 holding.
  • Horizon Investments first reported a position in Monolithic Power Systems in Q2 2022 and has held it in 14 quarters since.
  • 1,118 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q1 2026.

Based on Horizon Investments's 13F filing for Q1 2026, filed 15 May 2026.