Westfield Capital Management
MPWR icon

Westfield Capital Management’s Monolithic Power Systems MPWR Stock Holding History

Westfield Capital 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
2023
Q1 		– Sell
-119,526
Closed -$42.3M – 249
2022
Q4 		$42.3M Buy
+119,526
New +$42.9M 0.33% 114
2019
Q1 		– Sell
-195,754
Closed -$22.8M – 268
2018
Q4 		$22.8M Buy
+195,754
New +$23.4M 0.19% 145
2018
Q3 		– Sell
-115,690
Closed -$15.5M – 264
2018
Q2 		$15.5M Buy
115,690
+9,256
+9% +$1.18M 0.12% 193
2018
Q1 		$12.3M Sell
106,434
-62,908
-37% -$7.46M 0.1% 194
2017
Q4 		$19M Sell
169,342
-91,870
-35% -$10.7M 0.15% 187
2017
Q3 		$27.8M Buy
261,212
+1,325
+0.5% +$135K 0.21% 157
2017
Q2 		$25.1M Sell
259,887
-32,144
-11% -$3.06M 0.21% 154
2017
Q1 		$26.9M Sell
292,031
-63,246
-18% -$5.6M 0.23% 139
2016
Q4 		$29.1M Sell
355,277
-276,168
-44% -$22.2M 0.26% 126
2016
Q3 		$50.8M Sell
631,445
-69,993
-10% -$5.17M 0.41% 83
2016
Q2 		$47.9M Buy
701,438
+362,821
+107% +$23.8M 0.4% 89
2016
Q1 		$21.6M Sell
338,617
-64,830
-16% -$3.86M 0.16% 161
2015
Q4 		$25.7M Sell
403,447
-124,845
-24% -$7.75M 0.17% 164
2015
Q3 		$27M Sell
528,292
-19,510
-4% -$967K 0.19% 147
2015
Q2 		$27.8M Buy
547,802
+18,877
+4% +$999K 0.17% 157
2015
Q1 		$27.8M Buy
528,925
+277,164
+110% +$14M 0.16% 168
2014
Q4 		$12.5M Buy
+251,761
New +$11.3M 0.07% 229
2013
Q3 		– Sell
-297,420
Closed -$7.17M – 365
2013
Q2 		$7.17M Buy
+297,420
New +$7.06M 0.05% 247

Other funds holding MPWR

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return
Brown Advisory
Brown Advisory Baltimore, Maryland $60.9B AUM 15.24% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Westfield Capital Management's MPWR Position: Q1 2023 in Review

Westfield Capital Management sold out of Monolithic Power Systems (MPWR) in Q1 2023, closing a stake of 119,526 shares — an estimated $42.3M sold.

Westfield Capital Management first reported a position in MPWR in Q2 2013 and held it in 18 quarters. The position peaked at $50.8M in Q3 2016. 667 funds tracked by Wall St. Rank hold MPWR as of Q1 2023.

  • Westfield Capital Management reported no remaining Monolithic Power Systems position as of Q1 2023 after selling out during the quarter.
  • Westfield Capital Management sold 119,526 Monolithic Power Systems shares in Q1 2023, an estimated $42.3M.
  • Westfield Capital Management first reported a position in Monolithic Power Systems in Q2 2013 and held it in 18 quarters.
  • Westfield Capital Management's Monolithic Power Systems position peaked at $50.8M in Q3 2016.
  • 667 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q1 2023.

Based on Westfield Capital Management's 13F filing for Q1 2023, filed 12 May 2023.