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John Overdeck’s Monolithic Power Systems MPWR Stock Holding History

John Overdeck’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 		$263M Buy
190,505
+178,487
+1,485% +$268M 0.19% 112
2026
Q1 		$13.1M Buy
+12,018
New +$13.1M 0.01% 1224
2023
Q4 		– Sell
-12,176
Closed -$5.63M – 3291
2023
Q3 		$5.63M Buy
+12,176
New +$6.23M 0.02% 842
2022
Q4 		– Sell
-7,601
Closed -$2.76M – 2976
2022
Q3 		$2.76M Buy
+7,601
New +$3.38M 0.01% 1001
2022
Q1 		– Sell
-4,000
Closed -$1.97M – 3710
2021
Q4 		$1.97M Buy
4,000
+2,400
+150% +$1.24M ﹤0.01% 1929
2021
Q3 		$775K Buy
+1,600
New +$728K ﹤0.01% 2855
2021
Q2 		– Sell
-10,996
Closed -$3.87M – 4379
2021
Q1 		$3.88M Buy
+10,996
New +$4M 0.01% 1226
2020
Q4 		– Sell
-67,403
Closed -$18.8M – 3601
2020
Q3 		$18.8M Buy
67,403
+63,706
+1,723% +$16.6M 0.07% 310
2020
Q2 		$876K Buy
+3,697
New +$748K ﹤0.01% 1621
2016
Q3 		– Sell
-91,676
Closed -$6.26M – 3276
2016
Q2 		$6.26M Buy
91,676
+81,620
+812% +$5.35M 0.03% 675
2016
Q1 		$640K Buy
+10,056
New +$599K ﹤0.01% 1889
2015
Q3 		– Sell
-7,202
Closed -$365K – 2525
2015
Q2 		$365K Buy
7,202
+750
+12% +$39.7K ﹤0.01% 2310
2015
Q1 		$340K Sell
6,452
-16,973
-72% -$855K ﹤0.01% 2199
2014
Q4 		$1.17M Sell
23,425
-151,563
-87% -$6.81M 0.01% 1303
2014
Q3 		$7.71M Buy
174,988
+107,191
+158% +$4.71M 0.03% 509
2014
Q2 		$2.87M Sell
67,797
-75,639
-53% -$2.93M 0.01% 897
2014
Q1 		$5.56M Buy
143,436
+80,849
+129% +$2.85M 0.03% 592
2013
Q4 		$2.17M Buy
+62,587
New +$2M 0.01% 959
2013
Q3 		– Sell
-137,363
Closed -$3.31M – 2002
2013
Q2 		$3.31M Buy
+137,363
New +$3.26M 0.02% 675

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

John Overdeck's MPWR Position: Q2 2026 in Review

John Overdeck increased its Monolithic Power Systems (MPWR) stake by 1,485% in Q2 2026, buying an estimated $268M and bringing the position to 190,505 shares worth $263M. The position accounts for 0.19% of the portfolio, ranked #112.

John Overdeck first reported a position in MPWR in Q2 2013 and has held it in 19 quarters since. 1,235 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • John Overdeck held 190,505 shares of Monolithic Power Systems worth $263M as of Q2 2026.
  • John Overdeck bought 178,487 Monolithic Power Systems shares in Q2 2026, an estimated $268M.
  • Monolithic Power Systems made up 0.19% of John Overdeck's portfolio in Q2 2026, its #112 holding.
  • John Overdeck first reported a position in Monolithic Power Systems in Q2 2013 and has held it in 19 quarters since.
  • 1,235 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.