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Campbell & Co Investment Adviser’s Monolithic Power Systems MPWR Stock Holding History

Campbell & Co Investment Adviser’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 		$752K Buy
+544
New +$817K 0.04% 646
2026
Q1 		– Sell
-503
Closed -$456K – 1288
2025
Q4 		$456K Buy
503
+96
+24% +$92.4K 0.02% 865
2025
Q3 		$375K Sell
407
-1,651
-80% -$1.34M 0.03% 832
2025
Q2 		$1.51M Buy
+2,058
New +$1.31M 0.09% 337
2025
Q1 		– Sell
-667
Closed -$395K – 1221
2024
Q4 		$395K Buy
667
+48
+8% +$34.8K 0.03% 751
2024
Q3 		$572K Sell
619
-188
-23% -$162K 0.04% 652
2024
Q2 		$663K Buy
+807
New +$582K 0.06% 537
2024
Q1 		– Sell
-546
Closed -$344K – 1279
2023
Q4 		$344K Buy
+546
New +$285K 0.03% 866
2023
Q3 		– Sell
-552
Closed -$298K – 1105
2023
Q2 		$298K Sell
552
-387
-41% -$184K 0.05% 669
2023
Q1 		$470K Buy
+939
New +$432K 0.09% 443
2022
Q2 		– Sell
-915
Closed -$444K – 824
2022
Q1 		$444K Buy
915
+365
+66% +$159K 0.12% 325
2021
Q4 		$271K Buy
+550
New +$284K 0.09% 404
2019
Q3 		– Sell
-7,486
Closed -$1.02M – 699
2019
Q2 		$1.02M Buy
+7,486
New +$1.02M 0.46% 21
2018
Q4 		– Sell
-2,476
Closed -$311K – 442
2018
Q3 		$311K Buy
+2,476
New +$345K 0.21% 203
2018
Q2 		– Sell
-1,776
Closed -$206K – 475
2018
Q1 		$206K Buy
+1,776
New +$211K 0.17% 296
2014
Q1 		– Sell
-25,524
Closed -$885K – 264
2013
Q4 		$885K Buy
+25,524
New +$816K 0.2% 132

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

Campbell & Co Investment Adviser's MPWR Position: Q2 2026 in Review

Campbell & Co Investment Adviser opened a new position in Monolithic Power Systems (MPWR) in Q2 2026: 544 shares worth $752K. The stake represents 0.04% of the portfolio and ranks #646 among its holdings. This is a return to the name: Campbell & Co Investment Adviser previously reported a position in MPWR as recently as Q4 2025.

Campbell & Co Investment Adviser first reported a position in MPWR in Q4 2013 and has held it in 16 quarters since. The position peaked at $1.51M in Q2 2025. 1,244 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Campbell & Co Investment Adviser held 544 shares of Monolithic Power Systems worth $752K as of Q2 2026.
  • Monolithic Power Systems was a new Campbell & Co Investment Adviser position in Q2 2026.
  • Monolithic Power Systems made up 0.04% of Campbell & Co Investment Adviser's portfolio in Q2 2026, its #646 holding.
  • Campbell & Co Investment Adviser first reported a position in Monolithic Power Systems in Q4 2013 and has held it in 16 quarters since.
  • Campbell & Co Investment Adviser's Monolithic Power Systems position peaked at $1.51M in Q2 2025.
  • 1,244 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Campbell & Co Investment Adviser's 13F filing for Q2 2026, filed 3 Aug 2026.